* [00/12] add STM32 FMC2 controller drivers
@ 2020-03-23 14:58 Christophe Kerello
2020-03-23 14:58 ` [01/12] dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation Christophe Kerello
` (12 more replies)
0 siblings, 13 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
The FMC2 functional block makes the interface with: synchronous and
asynchronous static devices (such as PSNOR, PSRAM or other memory-mapped
peripherals) and NAND flash memories.
Its main purposes are:
- to translate AXI transactions into the appropriate external device
protocol
- to meet the access time requirements of the external devices
All external devices share the addresses, data and control signals with the
controller. Each external device is accessed by means of a unique Chip
Select. The FMC2 performs only one access at a time to an external device.
Christophe Kerello (12):
dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation
mfd: stm32-fmc2: add STM32 FMC2 controller driver
bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
mtd: rawnand: stm32_fmc2: manage all errors cases at probe time
mtd: rawnand: stm32_fmc2: remove useless inline comments
mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts
mtd: rawnand: stm32_fmc2: cleanup
mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros
mtd: rawnand: stm32_fmc2: move all registers
mtd: rawnand: stm32_fmc2: use regmap APIs
mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller
mtd: rawnand: stm32_fmc2: add new MP1 compatible string
.../devicetree/bindings/mfd/st,stm32-fmc2.yaml | 370 ++++++
drivers/bus/Kconfig | 11 +
drivers/bus/Makefile | 1 +
drivers/bus/stm32-fmc2-ebi.c | 1093 +++++++++++++++++
drivers/mfd/Kconfig | 12 +
drivers/mfd/Makefile | 1 +
drivers/mfd/stm32-fmc2.c | 120 ++
drivers/mtd/nand/raw/Kconfig | 3 +
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 1273 +++++++++-----------
include/linux/mfd/stm32-fmc2.h | 226 ++++
10 files changed, 2407 insertions(+), 703 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mfd/st,stm32-fmc2.yaml
create mode 100644 drivers/bus/stm32-fmc2-ebi.c
create mode 100644 drivers/mfd/stm32-fmc2.c
create mode 100644 include/linux/mfd/stm32-fmc2.h
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 24+ messages in thread
* [01/12] dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-23 14:58 ` [02/12] mfd: stm32-fmc2: add STM32 FMC2 controller driver Christophe Kerello
` (11 subsequent siblings)
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch adds the documentation of the device tree bindings for the STM32
FMC2 controller.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
.../devicetree/bindings/mfd/st,stm32-fmc2.yaml | 370 +++++++++++++++++++++
1 file changed, 370 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/st,stm32-fmc2.yaml
diff --git a/Documentation/devicetree/bindings/mfd/st,stm32-fmc2.yaml b/Documentation/devicetree/bindings/mfd/st,stm32-fmc2.yaml
new file mode 100644
index 0000000..0ce1340
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/st,stm32-fmc2.yaml
@@ -0,0 +1,370 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/st,stm32-fmc2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics Flexible Memory Controller 2 (FMC2) Bindings
+
+description: |
+ The FMC2 functional block makes the interface with: synchronous and
+ asynchronous static devices (such as PSNOR, PSRAM or other memory-mapped
+ peripherals) and NAND flash memories.
+ Its main purposes are:
+ - to translate AXI transactions into the appropriate external device
+ protocol
+ - to meet the access time requirements of the external devices
+ All external devices share the addresses, data and control signals with the
+ controller. Each external device is accessed by means of a unique Chip
+ Select. The FMC2 performs only one access at a time to an external device.
+
+maintainers:
+ - Christophe Kerello <christophe.kerello@st.com>
+
+properties:
+ compatible:
+ const: st,stm32mp1-fmc2
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+ ranges: true
+
+patternProperties:
+ "^ebi(@.*)?":
+ type: object
+
+ properties:
+ compatible:
+ const: st,stm32mp1-fmc2-ebi
+
+ "#address-cells":
+ const: 2
+
+ "#size-cells":
+ const: 1
+
+ ranges: true
+
+ patternProperties:
+ "^[a-zA-Z]*-ebi@[a-f0-9,]*$":
+ type: object
+
+ properties:
+ reg:
+ maxItems: 1
+
+ st,fmc2_ebi_cs_transaction_type:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - minimum: 0
+ maximum: 11
+ description: |
+ Select one of the transactions type supported
+ 0: Asynchronous mode 1 SRAM/FRAM
+ 1: Asynchronous mode 1 PSRAM.
+ 2: Asynchronous mode A SRAM/FRAM.
+ 3: Asynchronous mode A PSRAM.
+ 4: Asynchronous mode 2 NOR.
+ 5: Asynchronous mode B NOR.
+ 6: Asynchronous mode C NOR.
+ 7: Asynchronous mode D NOR.
+ 8: Synchronous read synchronous write PSRAM.
+ 9: Synchronous read asynchronous write PSRAM.
+ 10: Synchronous read synchronous write NOR.
+ 11: Synchronous read asynchronous write NOR.
+
+ st,fmc2_ebi_cs_cclk_enable:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: Continuous clock enable (first bank must be configured
+ in synchronous mode). The FMC_CLK is generated continuously
+ during asynchronous and synchronous access. By default, the
+ FMC_CLK is only generated during synchronous access.
+
+ st,fmc2_ebi_cs_mux_enable:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: Address/Data multiplexed on databus (valid only with
+ NOR and PSRAM transactions type). By default, Address/Data are
+ not multiplexed.
+
+ st,fmc2_ebi_cs_buswidth:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [ 8, 16 ]
+ - default: 16
+ description: Data bus width
+
+ st,fmc2_ebi_cs_waitpol_high:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: Wait signal polarity (NWAIT signal active high).
+ By default, NWAIT is active low.
+
+ st,fmc2_ebi_cs_waitcfg_enable:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: The NWAIT signal indicates wheither the data from the
+ device are valid or if a wait state must be inserted when
+ accessing the device in synchronous mode. By default, the NWAIT
+ signal is active one data cycle before wait state.
+
+ st,fmc2_ebi_cs_wait_enable:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: The NWAIT signal is enabled (its level is taken into
+ account after the programmed latency period to insert wait states
+ if asserted). By default, the NWAIT signal is disabled.
+
+ st,fmc2_ebi_cs_asyncwait_enable:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: The NWAIT signal is taken into account during
+ asynchronous transactions. By default, the NWAIT signal is not
+ taken into account during asynchronous transactions.
+
+ st,fmc2_ebi_cs_cpsize:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [ 0, 128, 256, 512, 1024 ]
+ - default: 0
+ description: CRAM page size. The controller splits the burst access
+ when the memory page is reached. By default, no burst split when
+ crossing page boundary.
+
+ st,fmc2_ebi_cs_byte_lane_setup:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property configures the byte lane setup timing
+ defined in ns from NBLx low to Chip Select NEx low.
+
+ st,fmc2_ebi_cs_address_setup:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the duration of the address
+ setup phase in ns used for asynchronous read/write transactions.
+
+ st,fmc2_ebi_cs_address_hold:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the duration of the address
+ hold phase in ns used for asynchronous multiplexed
+ read/write transactions.
+
+ st,fmc2_ebi_cs_data_setup:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the duration of the data
+ setup phase in ns used for asynchronous read/write transactions.
+
+ st,fmc2_ebi_cs_bus_turnaround:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the delay between the end of
+ current read/write transaction and the next transaction.
+
+ st,fmc2_ebi_cs_data_hold:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the duration of the data
+ hold phase in ns used for asynchronous read/write transactions.
+
+ st,fmc2_ebi_cs_clk_period:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the FMC_CLK output signal period in ns.
+
+ st,fmc2_ebi_cs_data_latency:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the data latency before reading or writing
+ the first data. This timing is expressed in FMC_CLK periods.
+
+ st,fmc2_ebi_cs_write_address_setup:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the duration of the address
+ setup phase in ns used for asynchronous write transactions.
+
+ st,fmc2_ebi_cs_write_address_hold:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the duration of the address hold phase in
+ ns used for asynchronous multiplexed write transactions.
+
+ st,fmc2_ebi_cs_write_data_setup:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the duration of the data setup phase in
+ ns used for asynchronous write transactions.
+
+ st,fmc2_ebi_cs_write_bus_turnaround:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the delay between the end of current
+ write transaction and the next transaction.
+
+ st,fmc2_ebi_cs_write_data_hold:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the duration of the data hold phase
+ in ns used for asynchronous write transactions.
+
+ st,fmc2_ebi_cs_max_low_pulse:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: This property defines the maximum chip select low pulse duration
+ in ns for synchronous transactions. When this timing reaches 0,
+ the controller splits the current access, toggles NE to allow
+ device refresh and restarts a new access.
+
+ required:
+ - reg
+ - st,fmc2_ebi_cs_transaction_type
+
+ additionalProperties: false
+
+ required:
+ - compatible
+ - "#address-cells"
+ - "#size-cells"
+ - ranges
+
+ nand-controller:
+ allOf:
+ - $ref: "../mtd/nand-controller.yaml#"
+
+ type: object
+
+ properties:
+ compatible:
+ const: st,stm32mp1-fmc2-nand
+
+ reg:
+ items:
+ - description: Chip select 0 data
+ - description: Chip select 0 command
+ - description: Chip select 0 address space
+ - description: Chip select 1 data
+ - description: Chip select 1 command
+ - description: Chip select 1 address space
+
+ interrupts:
+ maxItems: 1
+
+ dmas:
+ items:
+ - description: tx DMA channel
+ - description: rx DMA channel
+ - description: ecc DMA channel
+
+ dma-names:
+ items:
+ - const: tx
+ - const: rx
+ - const: ecc
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ patternProperties:
+ "^nand@[a-f0-9]$":
+ type: object
+
+ properties:
+ nand-ecc-step-size:
+ const: 512
+
+ nand-ecc-strength:
+ enum: [1, 4 ,8 ]
+
+ additionalProperties: false
+
+ required:
+ - "#address-cells"
+ - "#size-cells"
+ - compatible
+ - reg
+ - interrupts
+
+ additionalProperties: false
+
+required:
+ - "#address-cells"
+ - "#size-cells"
+ - compatible
+ - reg
+ - clocks
+ - ranges
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/stm32mp1-clks.h>
+ #include <dt-bindings/reset/stm32mp1-resets.h>
+ fmc@58002000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "st,stm32mp1-fmc2";
+ reg = <0x58002000 0x1000>;
+ clocks = <&rcc FMC_K>;
+ resets = <&rcc FMC_R>;
+ ranges;
+
+ ebi@0 {
+ #address-cells = <2>;
+ #size-cells = <1>;
+ compatible = "st,stm32mp1-fmc2-ebi";
+ ranges = <0 0 0x60000000 0x4000000>,
+ <1 0 0x64000000 0x4000000>,
+ <2 0 0x68000000 0x4000000>,
+ <3 0 0x6c000000 0x4000000>;
+
+ psram-ebi@0,0 {
+ compatible = "mtd-ram";
+ reg = <0 0x00000000 0x100000>;
+ bank-width = <2>;
+
+ st,fmc2_ebi_cs_transaction_type = <1>;
+ st,fmc2_ebi_cs_address_setup = <60>;
+ st,fmc2_ebi_cs_data_setup = <30>;
+ st,fmc2_ebi_cs_bus_turnaround = <5>;
+ };
+ };
+
+ nand-controller@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "st,stm32mp1-fmc2-nand";
+ reg = <0x80000000 0x1000>,
+ <0x88010000 0x1000>,
+ <0x88020000 0x1000>,
+ <0x81000000 0x1000>,
+ <0x89010000 0x1000>,
+ <0x89020000 0x1000>;
+ interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&mdma1 20 0x2 0x12000a02 0x0 0x0>,
+ <&mdma1 20 0x2 0x12000a08 0x0 0x0>,
+ <&mdma1 21 0x2 0x12000a0a 0x0 0x0>;
+ dma-names = "tx", "rx", "ecc";
+
+ nand@0 {
+ reg = <0>;
+ nand-on-flash-bbt;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+ };
+ };
+
+...
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [02/12] mfd: stm32-fmc2: add STM32 FMC2 controller driver
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
2020-03-23 14:58 ` [01/12] dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-29 23:36 ` Marek Vasut
2020-03-23 14:58 ` [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI " Christophe Kerello
` (10 subsequent siblings)
12 siblings, 1 reply; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
The driver adds the support for the STMicroelectronics FMC2 controller
found on STM32MP SOCs.
The FMC2 functional block makes the interface with: synchronous and
asynchronous static memories (such as PSNOR, PSRAM or other
memory-mapped peripherals) and NAND flash memories.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mfd/Kconfig | 12 +++
drivers/mfd/Makefile | 1 +
drivers/mfd/stm32-fmc2.c | 120 ++++++++++++++++++++++
include/linux/mfd/stm32-fmc2.h | 226 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 359 insertions(+)
create mode 100644 drivers/mfd/stm32-fmc2.c
create mode 100644 include/linux/mfd/stm32-fmc2.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 2b20329..5260582 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1922,6 +1922,18 @@ config MFD_ROHM_BD71828
Also included is a Coulomb counter, a real-time clock (RTC), and
a 32.768 kHz clock gate.
+config MFD_STM32_FMC2
+ tristate "Support for FMC2 controllers on STM32MP SoCs"
+ depends on MACH_STM32MP157 || COMPILE_TEST
+ select MFD_CORE
+ select REGMAP
+ select REGMAP_MMIO
+ help
+ Select this option to enable STM32 FMC2 driver used for FMC2 External
+ Bus Interface controller and FMC2 NAND flash controller. This driver
+ provides core support for the STM32 FMC2 controllers, in order to use
+ the actual functionality of the device other drivers must be enabled.
+
config MFD_STM32_LPTIMER
tristate "Support for STM32 Low-Power Timer"
depends on (ARCH_STM32 && OF) || COMPILE_TEST
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index b83f172..880de3c 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -256,5 +256,6 @@ obj-$(CONFIG_MFD_ROHM_BD70528) += rohm-bd70528.o
obj-$(CONFIG_MFD_ROHM_BD71828) += rohm-bd71828.o
obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
obj-$(CONFIG_MFD_STMFX) += stmfx.o
+obj-$(CONFIG_MFD_STM32_FMC2) += stm32-fmc2.o
obj-$(CONFIG_SGI_MFD_IOC3) += ioc3.o
diff --git a/drivers/mfd/stm32-fmc2.c b/drivers/mfd/stm32-fmc2.c
new file mode 100644
index 0000000..975fbd3
--- /dev/null
+++ b/drivers/mfd/stm32-fmc2.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) STMicroelectronics 2020
+ */
+
+#include <linux/mfd/stm32-fmc2.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/reset.h>
+
+/* Regmap registers configuration */
+#define FMC2_MAX_REGISTER 0x3fc
+
+static const struct regmap_config stm32_fmc2_regmap_cfg = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = sizeof(u32),
+ .max_register = FMC2_MAX_REGISTER,
+};
+
+static void stm32_fmc2_enable(struct stm32_fmc2 *fmc2)
+{
+ if (atomic_inc_return(&fmc2->nb_ctrl_used) == 1)
+ regmap_update_bits(fmc2->regmap, FMC2_BCR1,
+ FMC2_BCR1_FMC2EN, FMC2_BCR1_FMC2EN);
+}
+
+static void stm32_fmc2_disable(struct stm32_fmc2 *fmc2)
+{
+ if (atomic_dec_and_test(&fmc2->nb_ctrl_used))
+ regmap_update_bits(fmc2->regmap, FMC2_BCR1,
+ FMC2_BCR1_FMC2EN, 0);
+}
+
+static int stm32_fmc2_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct reset_control *rstc;
+ struct stm32_fmc2 *fmc2;
+ struct resource *res;
+ void __iomem *mmio;
+ int ret;
+
+ fmc2 = devm_kzalloc(dev, sizeof(*fmc2), GFP_KERNEL);
+ if (!fmc2)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ mmio = devm_ioremap_resource(dev, res);
+ if (IS_ERR(mmio))
+ return PTR_ERR(mmio);
+
+ fmc2->regmap = devm_regmap_init_mmio(dev, mmio,
+ &stm32_fmc2_regmap_cfg);
+ if (IS_ERR(fmc2->regmap))
+ return PTR_ERR(fmc2->regmap);
+
+ fmc2->reg_phys_addr = res->start;
+
+ fmc2->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(fmc2->clk))
+ return PTR_ERR(fmc2->clk);
+
+ rstc = devm_reset_control_get(dev, NULL);
+ if (PTR_ERR(rstc) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ ret = clk_prepare_enable(fmc2->clk);
+ if (ret)
+ return ret;
+
+ if (!IS_ERR(rstc)) {
+ reset_control_assert(rstc);
+ reset_control_deassert(rstc);
+ }
+
+ fmc2->enable = stm32_fmc2_enable;
+ fmc2->disable = stm32_fmc2_disable;
+
+ platform_set_drvdata(pdev, fmc2);
+
+ clk_disable_unprepare(fmc2->clk);
+
+ return devm_of_platform_populate(dev);
+}
+
+static int __maybe_unused stm32_fmc2_suspend(struct device *dev)
+{
+ return pinctrl_pm_select_sleep_state(dev);
+}
+
+static int __maybe_unused stm32_fmc2_resume(struct device *dev)
+{
+ return pinctrl_pm_select_default_state(dev);
+}
+
+static SIMPLE_DEV_PM_OPS(stm32_fmc2_pm_ops, stm32_fmc2_suspend,
+ stm32_fmc2_resume);
+
+static const struct of_device_id stm32_fmc2_match[] = {
+ {.compatible = "st,stm32mp1-fmc2"},
+ {}
+};
+MODULE_DEVICE_TABLE(of, stm32_fmc2_match);
+
+static struct platform_driver stm32_fmc2_driver = {
+ .probe = stm32_fmc2_probe,
+ .driver = {
+ .name = "stm32_fmc2",
+ .of_match_table = stm32_fmc2_match,
+ .pm = &stm32_fmc2_pm_ops,
+ },
+};
+module_platform_driver(stm32_fmc2_driver);
+
+MODULE_ALIAS("platform:stm32_fmc2");
+MODULE_AUTHOR("Christophe Kerello <christophe.kerello@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics STM32 FMC2 driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/stm32-fmc2.h b/include/linux/mfd/stm32-fmc2.h
new file mode 100644
index 0000000..bd623a3
--- /dev/null
+++ b/include/linux/mfd/stm32-fmc2.h
@@ -0,0 +1,226 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) STMicroelectronics 2020
+ */
+
+#ifndef _LINUX_STM32_FMC2_H_
+#define _LINUX_STM32_FMC2_H_
+
+#include <linux/atomic.h>
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/regmap.h>
+
+/* FMC2 Controller Registers */
+#define FMC2_BCR1 0x0
+#define FMC2_BTR1 0x4
+#define FMC2_BCR(x) ((x) * 0x8 + FMC2_BCR1)
+#define FMC2_BTR(x) ((x) * 0x8 + FMC2_BTR1)
+#define FMC2_PCSCNTR 0x20
+#define FMC2_PCR 0x80
+#define FMC2_SR 0x84
+#define FMC2_PMEM 0x88
+#define FMC2_PATT 0x8c
+#define FMC2_HECCR 0x94
+#define FMC2_BWTR1 0x104
+#define FMC2_BWTR(x) ((x) * 0x8 + FMC2_BWTR1)
+#define FMC2_ISR 0x184
+#define FMC2_ICR 0x188
+#define FMC2_CSQCR 0x200
+#define FMC2_CSQCFGR1 0x204
+#define FMC2_CSQCFGR2 0x208
+#define FMC2_CSQCFGR3 0x20c
+#define FMC2_CSQAR1 0x210
+#define FMC2_CSQAR2 0x214
+#define FMC2_CSQIER 0x220
+#define FMC2_CSQISR 0x224
+#define FMC2_CSQICR 0x228
+#define FMC2_CSQEMSR 0x230
+#define FMC2_BCHIER 0x250
+#define FMC2_BCHISR 0x254
+#define FMC2_BCHICR 0x258
+#define FMC2_BCHPBR1 0x260
+#define FMC2_BCHPBR2 0x264
+#define FMC2_BCHPBR3 0x268
+#define FMC2_BCHPBR4 0x26c
+#define FMC2_BCHDSR0 0x27c
+#define FMC2_BCHDSR1 0x280
+#define FMC2_BCHDSR2 0x284
+#define FMC2_BCHDSR3 0x288
+#define FMC2_BCHDSR4 0x28c
+
+/* Register: FMC2_BCR1 */
+#define FMC2_BCR1_CCLKEN BIT(20)
+#define FMC2_BCR1_FMC2EN BIT(31)
+
+/* Register: FMC2_BCRx */
+#define FMC2_BCR_MBKEN BIT(0)
+#define FMC2_BCR_MUXEN BIT(1)
+#define FMC2_BCR_MTYP GENMASK(3, 2)
+#define FMC2_BCR_MWID GENMASK(5, 4)
+#define FMC2_BCR_FACCEN BIT(6)
+#define FMC2_BCR_BURSTEN BIT(8)
+#define FMC2_BCR_WAITPOL BIT(9)
+#define FMC2_BCR_WAITCFG BIT(11)
+#define FMC2_BCR_WREN BIT(12)
+#define FMC2_BCR_WAITEN BIT(13)
+#define FMC2_BCR_EXTMOD BIT(14)
+#define FMC2_BCR_ASYNCWAIT BIT(15)
+#define FMC2_BCR_CPSIZE GENMASK(18, 16)
+#define FMC2_BCR_CBURSTRW BIT(19)
+#define FMC2_BCR_NBLSET GENMASK(23, 22)
+
+/* Register: FMC2_BTRx/FMC2_BWTRx */
+#define FMC2_BXTR_ADDSET GENMASK(3, 0)
+#define FMC2_BXTR_ADDHLD GENMASK(7, 4)
+#define FMC2_BXTR_DATAST GENMASK(15, 8)
+#define FMC2_BXTR_BUSTURN GENMASK(19, 16)
+#define FMC2_BTR_CLKDIV GENMASK(23, 20)
+#define FMC2_BTR_DATLAT GENMASK(27, 24)
+#define FMC2_BXTR_ACCMOD GENMASK(29, 28)
+#define FMC2_BXTR_DATAHLD GENMASK(31, 30)
+
+/* Register: FMC2_PCSCNTR */
+#define FMC2_PCSCNTR_CSCOUNT GENMASK(15, 0)
+#define FMC2_PCSCNTR_CNTBEN(x) BIT((x) + 16)
+
+/* Register: FMC2_PCR */
+#define FMC2_PCR_PWAITEN BIT(1)
+#define FMC2_PCR_PBKEN BIT(2)
+#define FMC2_PCR_PWID GENMASK(5, 4)
+#define FMC2_PCR_PWID_BUSWIDTH_8 0
+#define FMC2_PCR_PWID_BUSWIDTH_16 1
+#define FMC2_PCR_ECCEN BIT(6)
+#define FMC2_PCR_ECCALG BIT(8)
+#define FMC2_PCR_TCLR GENMASK(12, 9)
+#define FMC2_PCR_TCLR_DEFAULT 0xf
+#define FMC2_PCR_TAR GENMASK(16, 13)
+#define FMC2_PCR_TAR_DEFAULT 0xf
+#define FMC2_PCR_ECCSS GENMASK(19, 17)
+#define FMC2_PCR_ECCSS_512 1
+#define FMC2_PCR_ECCSS_2048 3
+#define FMC2_PCR_BCHECC BIT(24)
+#define FMC2_PCR_WEN BIT(25)
+
+/* Register: FMC2_SR */
+#define FMC2_SR_NWRF BIT(6)
+
+/* Register: FMC2_PMEM */
+#define FMC2_PMEM_MEMSET GENMASK(7, 0)
+#define FMC2_PMEM_MEMWAIT GENMASK(15, 8)
+#define FMC2_PMEM_MEMHOLD GENMASK(23, 16)
+#define FMC2_PMEM_MEMHIZ GENMASK(31, 24)
+
+/* Register: FMC2_PATT */
+#define FMC2_PATT_ATTSET GENMASK(7, 0)
+#define FMC2_PATT_ATTWAIT GENMASK(15, 8)
+#define FMC2_PATT_ATTHOLD GENMASK(23, 16)
+#define FMC2_PATT_ATTHIZ GENMASK(31, 24)
+
+/* Register: FMC2_ISR */
+#define FMC2_ISR_IHLF BIT(1)
+
+/* Register: FMC2_ICR */
+#define FMC2_ICR_CIHLF BIT(1)
+
+/* Register: FMC2_CSQCR */
+#define FMC2_CSQCR_CSQSTART BIT(0)
+
+/* Register: FMC2_CSQCFGR1 */
+#define FMC2_CSQCFGR1_CMD2EN BIT(1)
+#define FMC2_CSQCFGR1_DMADEN BIT(2)
+#define FMC2_CSQCFGR1_ACYNBR GENMASK(6, 4)
+#define FMC2_CSQCFGR1_CMD1 GENMASK(15, 8)
+#define FMC2_CSQCFGR1_CMD2 GENMASK(23, 16)
+#define FMC2_CSQCFGR1_CMD1T BIT(24)
+#define FMC2_CSQCFGR1_CMD2T BIT(25)
+
+/* Register: FMC2_CSQCFGR2 */
+#define FMC2_CSQCFGR2_SQSDTEN BIT(0)
+#define FMC2_CSQCFGR2_RCMD2EN BIT(1)
+#define FMC2_CSQCFGR2_DMASEN BIT(2)
+#define FMC2_CSQCFGR2_RCMD1 GENMASK(15, 8)
+#define FMC2_CSQCFGR2_RCMD2 GENMASK(23, 16)
+#define FMC2_CSQCFGR2_RCMD1T BIT(24)
+#define FMC2_CSQCFGR2_RCMD2T BIT(25)
+
+/* Register: FMC2_CSQCFGR3 */
+#define FMC2_CSQCFGR3_SNBR GENMASK(13, 8)
+#define FMC2_CSQCFGR3_AC1T BIT(16)
+#define FMC2_CSQCFGR3_AC2T BIT(17)
+#define FMC2_CSQCFGR3_AC3T BIT(18)
+#define FMC2_CSQCFGR3_AC4T BIT(19)
+#define FMC2_CSQCFGR3_AC5T BIT(20)
+#define FMC2_CSQCFGR3_SDT BIT(21)
+#define FMC2_CSQCFGR3_RAC1T BIT(22)
+#define FMC2_CSQCFGR3_RAC2T BIT(23)
+
+/* Register: FMC2_CSQCAR1 */
+#define FMC2_CSQCAR1_ADDC1 GENMASK(7, 0)
+#define FMC2_CSQCAR1_ADDC2 GENMASK(15, 8)
+#define FMC2_CSQCAR1_ADDC3 GENMASK(23, 16)
+#define FMC2_CSQCAR1_ADDC4 GENMASK(31, 24)
+
+/* Register: FMC2_CSQCAR2 */
+#define FMC2_CSQCAR2_ADDC5 GENMASK(7, 0)
+#define FMC2_CSQCAR2_NANDCEN GENMASK(11, 10)
+#define FMC2_CSQCAR2_SAO GENMASK(31, 16)
+
+/* Register: FMC2_CSQIER */
+#define FMC2_CSQIER_TCIE BIT(0)
+
+/* Register: FMC2_CSQICR */
+#define FMC2_CSQICR_CLEAR_IRQ GENMASK(4, 0)
+
+/* Register: FMC2_CSQEMSR */
+#define FMC2_CSQEMSR_SEM GENMASK(15, 0)
+
+/* Register: FMC2_BCHIER */
+#define FMC2_BCHIER_DERIE BIT(1)
+#define FMC2_BCHIER_EPBRIE BIT(4)
+
+/* Register: FMC2_BCHICR */
+#define FMC2_BCHICR_CLEAR_IRQ GENMASK(4, 0)
+
+/* Register: FMC2_BCHDSR0 */
+#define FMC2_BCHDSR0_DUE BIT(0)
+#define FMC2_BCHDSR0_DEF BIT(1)
+#define FMC2_BCHDSR0_DEN GENMASK(7, 4)
+
+/* Register: FMC2_BCHDSR1 */
+#define FMC2_BCHDSR1_EBP1 GENMASK(12, 0)
+#define FMC2_BCHDSR1_EBP2 GENMASK(28, 16)
+
+/* Register: FMC2_BCHDSR2 */
+#define FMC2_BCHDSR2_EBP3 GENMASK(12, 0)
+#define FMC2_BCHDSR2_EBP4 GENMASK(28, 16)
+
+/* Register: FMC2_BCHDSR3 */
+#define FMC2_BCHDSR3_EBP5 GENMASK(12, 0)
+#define FMC2_BCHDSR3_EBP6 GENMASK(28, 16)
+
+/* Register: FMC2_BCHDSR4 */
+#define FMC2_BCHDSR4_EBP7 GENMASK(12, 0)
+#define FMC2_BCHDSR4_EBP8 GENMASK(28, 16)
+
+/*
+ * struct stm32_fmc2 - STM32 FMC2 data assigned by parent device
+ * @clk: clock reference for this instance
+ * @regmap: register map reference for this instance
+ * @reg_phys_addr: physical address of the register map
+ * @nb_ctrl_used: number of used controller
+ * @nwait_is_used: NWAIT signal in used by a controller
+ * @enable: enable the FMC2 IP
+ * @disable: disable the FMC2 IP
+ */
+struct stm32_fmc2 {
+ struct clk *clk;
+ struct regmap *regmap;
+ phys_addr_t reg_phys_addr;
+ atomic_t nb_ctrl_used;
+ atomic_t nwait_is_used;
+ void (*enable)(struct stm32_fmc2 *fmc2);
+ void (*disable)(struct stm32_fmc2 *fmc2);
+};
+
+#endif
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
2020-03-23 14:58 ` [01/12] dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation Christophe Kerello
2020-03-23 14:58 ` [02/12] mfd: stm32-fmc2: add STM32 FMC2 controller driver Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-30 1:24 ` Marek Vasut
2020-03-23 14:58 ` [04/12] mtd: rawnand: stm32_fmc2: manage all errors cases at probe time Christophe Kerello
` (9 subsequent siblings)
12 siblings, 1 reply; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
The driver adds the support for the STMicroelectronics FMC2 EBI controller
found on STM32MP SOCs.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/bus/Kconfig | 11 +
drivers/bus/Makefile | 1 +
drivers/bus/stm32-fmc2-ebi.c | 1093 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 1105 insertions(+)
create mode 100644 drivers/bus/stm32-fmc2-ebi.c
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index 6095b6d..367f015 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -200,6 +200,17 @@ config DA8XX_MSTPRI
configuration. Allows to adjust the priorities of all master
peripherals.
+config STM32_FMC2_EBI
+ tristate "Support for FMC2 External Bus Interface on STM32MP SoCs"
+ depends on MACH_STM32MP157 || COMPILE_TEST
+ select REGMAP
+ select MFD_STM32_FMC2
+ help
+ Select this option to enable the STM32 FMC2 External Bus Interface
+ controller. This driver configures the transactions with external
+ devices (like SRAM, ethernet adapters, FPGAs, LCD displays, ...) on
+ SOCs containing the FMC2 External Bus Interface.
+
source "drivers/bus/fsl-mc/Kconfig"
endmenu
diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile
index 1320bcf..e2d7992 100644
--- a/drivers/bus/Makefile
+++ b/drivers/bus/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_QCOM_EBI2) += qcom-ebi2.o
obj-$(CONFIG_SUN50I_DE2_BUS) += sun50i-de2.o
obj-$(CONFIG_SUNXI_RSB) += sunxi-rsb.o
obj-$(CONFIG_SIMPLE_PM_BUS) += simple-pm-bus.o
+obj-$(CONFIG_STM32_FMC2_EBI) += stm32-fmc2-ebi.o
obj-$(CONFIG_TEGRA_ACONNECT) += tegra-aconnect.o
obj-$(CONFIG_TEGRA_GMI) += tegra-gmi.o
obj-$(CONFIG_TI_PWMSS) += ti-pwmss.o
diff --git a/drivers/bus/stm32-fmc2-ebi.c b/drivers/bus/stm32-fmc2-ebi.c
new file mode 100644
index 0000000..029b757
--- /dev/null
+++ b/drivers/bus/stm32-fmc2-ebi.c
@@ -0,0 +1,1093 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) STMicroelectronics 2020
+ */
+
+#include <linux/mfd/stm32-fmc2.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+
+#define FMC2_MAX_EBI_CE 4
+
+#define FMC2_BCR_CPSIZE_0 0x0
+#define FMC2_BCR_CPSIZE_128 0x1
+#define FMC2_BCR_CPSIZE_256 0x2
+#define FMC2_BCR_CPSIZE_512 0x3
+#define FMC2_BCR_CPSIZE_1024 0x4
+
+#define FMC2_BCR_MWID_8 0x0
+#define FMC2_BCR_MWID_16 0x1
+
+#define FMC2_BCR_MTYP_SRAM 0x0
+#define FMC2_BCR_MTYP_PSRAM 0x1
+#define FMC2_BCR_MTYP_NOR 0x2
+
+#define FMC2_BXTR_EXTMOD_A 0x0
+#define FMC2_BXTR_EXTMOD_B 0x1
+#define FMC2_BXTR_EXTMOD_C 0x2
+#define FMC2_BXTR_EXTMOD_D 0x3
+
+#define FMC2_BCR_NBLSET_MAX 0x3
+#define FMC2_BXTR_ADDSET_MAX 0xf
+#define FMC2_BXTR_ADDHLD_MAX 0xf
+#define FMC2_BXTR_DATAST_MAX 0xff
+#define FMC2_BXTR_BUSTURN_MAX 0xf
+#define FMC2_BXTR_DATAHLD_MAX 0x3
+#define FMC2_BTR_CLKDIV_MAX 0xf
+#define FMC2_BTR_DATLAT_MAX 0xf
+#define FMC2_PCSCNTR_CSCOUNT_MAX 0xff
+
+enum stm32_fmc2_ebi_register_type {
+ FMC2_REG_BCR = 1,
+ FMC2_REG_BTR,
+ FMC2_REG_BWTR,
+ FMC2_REG_PCSCNTR
+};
+
+enum stm32_fmc2_ebi_transaction_type {
+ FMC2_ASYNC_MODE_1_SRAM = 0,
+ FMC2_ASYNC_MODE_1_PSRAM,
+ FMC2_ASYNC_MODE_A_SRAM,
+ FMC2_ASYNC_MODE_A_PSRAM,
+ FMC2_ASYNC_MODE_2_NOR,
+ FMC2_ASYNC_MODE_B_NOR,
+ FMC2_ASYNC_MODE_C_NOR,
+ FMC2_ASYNC_MODE_D_NOR,
+ FMC2_SYNC_READ_SYNC_WRITE_PSRAM,
+ FMC2_SYNC_READ_ASYNC_WRITE_PSRAM,
+ FMC2_SYNC_READ_SYNC_WRITE_NOR,
+ FMC2_SYNC_READ_ASYNC_WRITE_NOR
+};
+
+enum stm32_fmc2_ebi_buswidth {
+ FMC2_BUSWIDTH_8 = 8,
+ FMC2_BUSWIDTH_16 = 16
+};
+
+enum stm32_fmc2_ebi_cpsize {
+ FMC2_CPSIZE_0 = 0,
+ FMC2_CPSIZE_128 = 128,
+ FMC2_CPSIZE_256 = 256,
+ FMC2_CPSIZE_512 = 512,
+ FMC2_CPSIZE_1024 = 1024
+};
+
+struct stm32_fmc2_ebi {
+ u32 bcr[FMC2_MAX_EBI_CE];
+ u32 btr[FMC2_MAX_EBI_CE];
+ u32 bwtr[FMC2_MAX_EBI_CE];
+ u32 pcscntr;
+ u8 cs_assigned;
+};
+
+/*
+ * struct stm32_fmc2_prop - STM32 FMC2 EBI property
+ * @name: the device tree binding name of the property
+ * @bprop: indicate that it is a boolean property
+ * @mprop: indicate that it is a mandatory property
+ * @reg_type: the register that have to be modified
+ * @reg_mask: the bit that have to be modified in the selected register
+ * in case of it is a boolean property
+ * @reset_val: the default value that have to be set in case the property
+ * has not been defined in the device tree
+ * @check: this callback ckecks that the property is compliant with the
+ * transaction type selected
+ * @calculate: this callback is called to calculate for exemple a timing
+ * set in ns in the device tree in clock cycles
+ * @set: this callback applies the values in the registers
+ */
+struct stm32_fmc2_prop {
+ const char *name;
+ bool bprop;
+ bool mprop;
+ int reg_type;
+ u32 reg_mask;
+ u32 reset_val;
+ int (*check)(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop, int cs);
+ u32 (*calculate)(struct stm32_fmc2 *fmc2, u32 setup);
+ int (*set)(struct stm32_fmc2 *fmc2, const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup);
+};
+
+static int stm32_fmc2_ebi_check_mux(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ u32 bcr;
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+
+ if (bcr & FMC2_BCR_MTYP)
+ return 0;
+
+ return -EINVAL;
+}
+
+static int stm32_fmc2_ebi_check_waitcfg(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ u32 bcr, val = FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_NOR);
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+
+ if ((bcr & FMC2_BCR_MTYP) == val && bcr & FMC2_BCR_BURSTEN)
+ return 0;
+
+ return -EINVAL;
+}
+
+static int stm32_fmc2_ebi_check_sync_trans(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ u32 bcr;
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+
+ if (bcr & FMC2_BCR_BURSTEN)
+ return 0;
+
+ return -EINVAL;
+}
+
+static int stm32_fmc2_ebi_check_async_trans(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ u32 bcr;
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+
+ if (!(bcr & FMC2_BCR_BURSTEN) || !(bcr & FMC2_BCR_CBURSTRW))
+ return 0;
+
+ return -EINVAL;
+}
+
+static int stm32_fmc2_ebi_check_cpsize(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ u32 bcr, val = FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_PSRAM);
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+
+ if ((bcr & FMC2_BCR_MTYP) == val && bcr & FMC2_BCR_BURSTEN)
+ return 0;
+
+ return -EINVAL;
+}
+
+static int stm32_fmc2_ebi_check_address_hold(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ u32 bcr, bxtr, val = FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_D);
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+ if (prop->reg_type == FMC2_REG_BWTR)
+ regmap_read(fmc2->regmap, FMC2_BWTR(cs), &bxtr);
+ else
+ regmap_read(fmc2->regmap, FMC2_BTR(cs), &bxtr);
+
+ if ((!(bcr & FMC2_BCR_BURSTEN) || !(bcr & FMC2_BCR_CBURSTRW)) &&
+ ((bxtr & FMC2_BXTR_ACCMOD) == val || bcr & FMC2_BCR_MUXEN))
+ return 0;
+
+ return -EINVAL;
+}
+
+static int stm32_fmc2_ebi_check_clk_period(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ u32 bcr, bcr1;
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+ if (cs)
+ regmap_read(fmc2->regmap, FMC2_BCR(0), &bcr1);
+ else
+ bcr1 = bcr;
+
+ if (bcr & FMC2_BCR_BURSTEN && (!cs || !(bcr1 & FMC2_BCR1_CCLKEN)))
+ return 0;
+
+ return -EINVAL;
+}
+
+static int stm32_fmc2_ebi_check_cclk(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ if (cs)
+ return -EINVAL;
+
+ return stm32_fmc2_ebi_check_sync_trans(fmc2, prop, cs);
+}
+
+static u32 stm32_fmc2_ebi_timing_ns_to_clock_cycles(struct stm32_fmc2 *fmc2,
+ u32 setup)
+{
+ unsigned long hclk = clk_get_rate(fmc2->clk);
+ unsigned long hclkp = NSEC_PER_SEC / (hclk / 1000);
+
+ return DIV_ROUND_UP(setup * 1000, hclkp);
+}
+
+static int stm32_fmc2_ebi_get_reg(int reg_type, int cs, u32 *reg)
+{
+ switch (reg_type) {
+ case FMC2_REG_BCR:
+ *reg = FMC2_BCR(cs);
+ break;
+ case FMC2_REG_BTR:
+ *reg = FMC2_BTR(cs);
+ break;
+ case FMC2_REG_BWTR:
+ *reg = FMC2_BWTR(cs);
+ break;
+ case FMC2_REG_PCSCNTR:
+ *reg = FMC2_PCSCNTR;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_bit_field(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 reg;
+ int ret;
+
+ ret = stm32_fmc2_ebi_get_reg(prop->reg_type, cs, ®);
+ if (ret)
+ return ret;
+
+ regmap_update_bits(fmc2->regmap, reg, prop->reg_mask,
+ setup ? prop->reg_mask : 0);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_trans_type(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 bcr_mask, bcr = FMC2_BCR_WREN;
+ u32 btr_mask, btr = 0;
+ u32 bwtr_mask, bwtr = 0;
+
+ bwtr_mask = FMC2_BXTR_ACCMOD;
+ btr_mask = FMC2_BXTR_ACCMOD;
+ bcr_mask = FMC2_BCR_MUXEN | FMC2_BCR_MTYP | FMC2_BCR_FACCEN |
+ FMC2_BCR_WREN | FMC2_BCR_WAITEN | FMC2_BCR_BURSTEN |
+ FMC2_BCR_EXTMOD | FMC2_BCR_CBURSTRW;
+
+ switch (setup) {
+ case FMC2_ASYNC_MODE_1_SRAM:
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_SRAM);
+ /*
+ * MUXEN = 0, MTYP = 0, FACCEN = 0, BURSTEN = 0, WAITEN = 0,
+ * WREN = 1, EXTMOD = 0, CBURSTRW = 0, ACCMOD = 0
+ */
+ break;
+ case FMC2_ASYNC_MODE_1_PSRAM:
+ /*
+ * MUXEN = 0, MTYP = 1, FACCEN = 0, BURSTEN = 0, WAITEN = 0,
+ * WREN = 1, EXTMOD = 0, CBURSTRW = 0, ACCMOD = 0
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_PSRAM);
+ break;
+ case FMC2_ASYNC_MODE_A_SRAM:
+ /*
+ * MUXEN = 0, MTYP = 0, FACCEN = 0, BURSTEN = 0, WAITEN = 0,
+ * WREN = 1, EXTMOD = 1, CBURSTRW = 0, ACCMOD = 0
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_SRAM);
+ bcr |= FMC2_BCR_EXTMOD;
+ btr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_A);
+ bwtr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_A);
+ break;
+ case FMC2_ASYNC_MODE_A_PSRAM:
+ /*
+ * MUXEN = 0, MTYP = 1, FACCEN = 0, BURSTEN = 0, WAITEN = 0,
+ * WREN = 1, EXTMOD = 1, CBURSTRW = 0, ACCMOD = 0
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_PSRAM);
+ bcr |= FMC2_BCR_EXTMOD;
+ btr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_A);
+ bwtr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_A);
+ break;
+ case FMC2_ASYNC_MODE_2_NOR:
+ /*
+ * MUXEN = 0, MTYP = 2, FACCEN = 1, BURSTEN = 0, WAITEN = 0,
+ * WREN = 1, EXTMOD = 0, CBURSTRW = 0, ACCMOD = 0
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_NOR);
+ bcr |= FMC2_BCR_FACCEN;
+ break;
+ case FMC2_ASYNC_MODE_B_NOR:
+ /*
+ * MUXEN = 0, MTYP = 2, FACCEN = 1, BURSTEN = 0, WAITEN = 0,
+ * WREN = 1, EXTMOD = 1, CBURSTRW = 0, ACCMOD = 1
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_NOR);
+ bcr |= FMC2_BCR_FACCEN | FMC2_BCR_EXTMOD;
+ btr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_B);
+ bwtr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_B);
+ break;
+ case FMC2_ASYNC_MODE_C_NOR:
+ /*
+ * MUXEN = 0, MTYP = 2, FACCEN = 1, BURSTEN = 0, WAITEN = 0,
+ * WREN = 1, EXTMOD = 1, CBURSTRW = 0, ACCMOD = 2
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_NOR);
+ bcr |= FMC2_BCR_FACCEN | FMC2_BCR_EXTMOD;
+ btr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_C);
+ bwtr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_C);
+ break;
+ case FMC2_ASYNC_MODE_D_NOR:
+ /*
+ * MUXEN = 0, MTYP = 2, FACCEN = 1, BURSTEN = 0, WAITEN = 0,
+ * WREN = 1, EXTMOD = 1, CBURSTRW = 0, ACCMOD = 3
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_NOR);
+ bcr |= FMC2_BCR_FACCEN | FMC2_BCR_EXTMOD;
+ btr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_D);
+ bwtr |= FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_D);
+ break;
+ case FMC2_SYNC_READ_SYNC_WRITE_PSRAM:
+ /*
+ * MUXEN = 0, MTYP = 1, FACCEN = 0, BURSTEN = 1, WAITEN = 0,
+ * WREN = 1, EXTMOD = 0, CBURSTRW = 1, ACCMOD = 0
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_PSRAM);
+ bcr |= FMC2_BCR_BURSTEN | FMC2_BCR_CBURSTRW;
+ break;
+ case FMC2_SYNC_READ_ASYNC_WRITE_PSRAM:
+ /*
+ * MUXEN = 0, MTYP = 1, FACCEN = 0, BURSTEN = 1, WAITEN = 0,
+ * WREN = 1, EXTMOD = 0, CBURSTRW = 0, ACCMOD = 0
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_PSRAM);
+ bcr |= FMC2_BCR_BURSTEN;
+ break;
+ case FMC2_SYNC_READ_SYNC_WRITE_NOR:
+ /*
+ * MUXEN = 0, MTYP = 2, FACCEN = 1, BURSTEN = 1, WAITEN = 0,
+ * WREN = 1, EXTMOD = 0, CBURSTRW = 1, ACCMOD = 0
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_NOR);
+ bcr |= FMC2_BCR_FACCEN | FMC2_BCR_BURSTEN | FMC2_BCR_CBURSTRW;
+ break;
+ case FMC2_SYNC_READ_ASYNC_WRITE_NOR:
+ /*
+ * MUXEN = 0, MTYP = 2, FACCEN = 1, BURSTEN = 1, WAITEN = 0,
+ * WREN = 1, EXTMOD = 0, CBURSTRW = 0, ACCMOD = 0
+ */
+ bcr |= FIELD_PREP(FMC2_BCR_MTYP, FMC2_BCR_MTYP_NOR);
+ bcr |= FMC2_BCR_FACCEN | FMC2_BCR_BURSTEN;
+ break;
+ default:
+ /* Type of transaction not supported */
+ return -EINVAL;
+ }
+
+ if (bcr & FMC2_BCR_EXTMOD)
+ regmap_update_bits(fmc2->regmap, FMC2_BWTR(cs),
+ bwtr_mask, bwtr);
+ regmap_update_bits(fmc2->regmap, FMC2_BTR(cs), btr_mask, btr);
+ regmap_update_bits(fmc2->regmap, FMC2_BCR(cs), bcr_mask, bcr);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_buswidth(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val;
+
+ switch (setup) {
+ case FMC2_BUSWIDTH_8:
+ val = FIELD_PREP(FMC2_BCR_MWID, FMC2_BCR_MWID_8);
+ break;
+ case FMC2_BUSWIDTH_16:
+ val = FIELD_PREP(FMC2_BCR_MWID, FMC2_BCR_MWID_16);
+ break;
+ default:
+ /* Buswidth not supported */
+ return -EINVAL;
+ }
+
+ regmap_update_bits(fmc2->regmap, FMC2_BCR(cs), FMC2_BCR_MWID, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_cpsize(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val;
+
+ switch (setup) {
+ case FMC2_CPSIZE_0:
+ val = FIELD_PREP(FMC2_BCR_CPSIZE, FMC2_BCR_CPSIZE_0);
+ break;
+ case FMC2_CPSIZE_128:
+ val = FIELD_PREP(FMC2_BCR_CPSIZE, FMC2_BCR_CPSIZE_128);
+ break;
+ case FMC2_CPSIZE_256:
+ val = FIELD_PREP(FMC2_BCR_CPSIZE, FMC2_BCR_CPSIZE_256);
+ break;
+ case FMC2_CPSIZE_512:
+ val = FIELD_PREP(FMC2_BCR_CPSIZE, FMC2_BCR_CPSIZE_512);
+ break;
+ case FMC2_CPSIZE_1024:
+ val = FIELD_PREP(FMC2_BCR_CPSIZE, FMC2_BCR_CPSIZE_1024);
+ break;
+ default:
+ /* Cpsize not supported */
+ return -EINVAL;
+ }
+
+ regmap_update_bits(fmc2->regmap, FMC2_BCR(cs), FMC2_BCR_CPSIZE, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_bl_setup(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val;
+
+ val = min_t(u32, setup, FMC2_BCR_NBLSET_MAX);
+ val = FIELD_PREP(FMC2_BCR_NBLSET, val);
+ regmap_update_bits(fmc2->regmap, FMC2_BCR(cs), FMC2_BCR_NBLSET, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_address_setup(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 bcr, bxtr, reg;
+ u32 val = FIELD_PREP(FMC2_BXTR_ACCMOD, FMC2_BXTR_EXTMOD_D);
+ int ret;
+
+ ret = stm32_fmc2_ebi_get_reg(prop->reg_type, cs, ®);
+ if (ret)
+ return ret;
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+ if (prop->reg_type == FMC2_REG_BWTR)
+ regmap_read(fmc2->regmap, FMC2_BWTR(cs), &bxtr);
+ else
+ regmap_read(fmc2->regmap, FMC2_BTR(cs), &bxtr);
+
+ if ((bxtr & FMC2_BXTR_ACCMOD) == val || bcr & FMC2_BCR_MUXEN)
+ val = clamp_val(setup, 1, FMC2_BXTR_ADDSET_MAX);
+ else
+ val = min_t(u32, setup, FMC2_BXTR_ADDSET_MAX);
+ val = FIELD_PREP(FMC2_BXTR_ADDSET, val);
+ regmap_update_bits(fmc2->regmap, reg, FMC2_BXTR_ADDSET, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_address_hold(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val, reg;
+ int ret;
+
+ ret = stm32_fmc2_ebi_get_reg(prop->reg_type, cs, ®);
+ if (ret)
+ return ret;
+
+ val = clamp_val(setup, 1, FMC2_BXTR_ADDHLD_MAX);
+ val = FIELD_PREP(FMC2_BXTR_ADDHLD, val);
+ regmap_update_bits(fmc2->regmap, reg, FMC2_BXTR_ADDHLD, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_data_setup(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val, reg;
+ int ret;
+
+ ret = stm32_fmc2_ebi_get_reg(prop->reg_type, cs, ®);
+ if (ret)
+ return ret;
+
+ val = clamp_val(setup, 1, FMC2_BXTR_DATAST_MAX);
+ val = FIELD_PREP(FMC2_BXTR_DATAST, val);
+ regmap_update_bits(fmc2->regmap, reg, FMC2_BXTR_DATAST, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_bus_turnaround(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val, reg;
+ int ret;
+
+ ret = stm32_fmc2_ebi_get_reg(prop->reg_type, cs, ®);
+ if (ret)
+ return ret;
+
+ val = setup ? min_t(u32, setup - 1, FMC2_BXTR_BUSTURN_MAX) : 0;
+ val = FIELD_PREP(FMC2_BXTR_BUSTURN, val);
+ regmap_update_bits(fmc2->regmap, reg, FMC2_BXTR_BUSTURN, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_data_hold(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val, reg;
+ int ret;
+
+ ret = stm32_fmc2_ebi_get_reg(prop->reg_type, cs, ®);
+ if (ret)
+ return ret;
+
+ if (prop->reg_type == FMC2_REG_BWTR)
+ val = setup ? min_t(u32, setup - 1, FMC2_BXTR_DATAHLD_MAX) : 0;
+ else
+ val = min_t(u32, setup, FMC2_BXTR_DATAHLD_MAX);
+ val = FIELD_PREP(FMC2_BXTR_DATAHLD, val);
+ regmap_update_bits(fmc2->regmap, reg, FMC2_BXTR_DATAHLD, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_clk_period(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val;
+
+ val = setup ? clamp_val(setup - 1, 1, FMC2_BTR_CLKDIV_MAX) : 1;
+ val = FIELD_PREP(FMC2_BTR_CLKDIV, val);
+ regmap_update_bits(fmc2->regmap, FMC2_BTR(cs), FMC2_BTR_CLKDIV, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_data_latency(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 val;
+
+ val = min_t(u32, setup, FMC2_BTR_DATLAT_MAX);
+ val = FIELD_PREP(FMC2_BTR_DATLAT, val);
+ regmap_update_bits(fmc2->regmap, FMC2_BTR(cs), FMC2_BTR_DATLAT, val);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_set_max_low_pulse(struct stm32_fmc2 *fmc2,
+ const struct stm32_fmc2_prop *prop,
+ int cs, u32 setup)
+{
+ u32 old_val, new_val, pcscntr;
+
+ if (setup < 1)
+ return 0;
+
+ regmap_read(fmc2->regmap, FMC2_PCSCNTR, &pcscntr);
+
+ /* Enable counter for the bank */
+ regmap_update_bits(fmc2->regmap, FMC2_PCSCNTR,
+ FMC2_PCSCNTR_CNTBEN(cs),
+ FMC2_PCSCNTR_CNTBEN(cs));
+
+ new_val = min_t(u32, setup - 1, FMC2_PCSCNTR_CSCOUNT_MAX);
+ old_val = FIELD_GET(FMC2_PCSCNTR_CSCOUNT, pcscntr);
+ if (old_val && new_val > old_val)
+ /* Keep current counter value */
+ return 0;
+
+ new_val = FIELD_PREP(FMC2_PCSCNTR_CSCOUNT, new_val);
+ regmap_update_bits(fmc2->regmap, FMC2_PCSCNTR,
+ FMC2_PCSCNTR_CSCOUNT, new_val);
+
+ return 0;
+}
+
+static const struct stm32_fmc2_prop stm32_fmc2_child_props[] = {
+ /* st,fmc2_ebi_cs_trans_type must be the first property */
+ {
+ .name = "st,fmc2_ebi_cs_transaction_type",
+ .mprop = true,
+ .set = stm32_fmc2_ebi_set_trans_type,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_cclk_enable",
+ .bprop = true,
+ .reg_type = FMC2_REG_BCR,
+ .reg_mask = FMC2_BCR1_CCLKEN,
+ .check = stm32_fmc2_ebi_check_cclk,
+ .set = stm32_fmc2_ebi_set_bit_field,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_mux_enable",
+ .bprop = true,
+ .reg_type = FMC2_REG_BCR,
+ .reg_mask = FMC2_BCR_MUXEN,
+ .check = stm32_fmc2_ebi_check_mux,
+ .set = stm32_fmc2_ebi_set_bit_field,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_buswidth",
+ .reset_val = FMC2_BUSWIDTH_16,
+ .set = stm32_fmc2_ebi_set_buswidth,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_waitpol_high",
+ .bprop = true,
+ .reg_type = FMC2_REG_BCR,
+ .reg_mask = FMC2_BCR_WAITPOL,
+ .set = stm32_fmc2_ebi_set_bit_field,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_waitcfg_enable",
+ .bprop = true,
+ .reg_type = FMC2_REG_BCR,
+ .reg_mask = FMC2_BCR_WAITCFG,
+ .check = stm32_fmc2_ebi_check_waitcfg,
+ .set = stm32_fmc2_ebi_set_bit_field,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_wait_enable",
+ .bprop = true,
+ .reg_type = FMC2_REG_BCR,
+ .reg_mask = FMC2_BCR_WAITEN,
+ .check = stm32_fmc2_ebi_check_sync_trans,
+ .set = stm32_fmc2_ebi_set_bit_field,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_asyncwait_enable",
+ .bprop = true,
+ .reg_type = FMC2_REG_BCR,
+ .reg_mask = FMC2_BCR_ASYNCWAIT,
+ .check = stm32_fmc2_ebi_check_async_trans,
+ .set = stm32_fmc2_ebi_set_bit_field,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_cpsize",
+ .check = stm32_fmc2_ebi_check_cpsize,
+ .set = stm32_fmc2_ebi_set_cpsize,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_byte_lane_setup",
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_bl_setup,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_address_setup",
+ .reg_type = FMC2_REG_BTR,
+ .reset_val = FMC2_BXTR_ADDSET_MAX,
+ .check = stm32_fmc2_ebi_check_async_trans,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_address_setup,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_address_hold",
+ .reg_type = FMC2_REG_BTR,
+ .reset_val = FMC2_BXTR_ADDHLD_MAX,
+ .check = stm32_fmc2_ebi_check_address_hold,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_address_hold,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_data_setup",
+ .reg_type = FMC2_REG_BTR,
+ .reset_val = FMC2_BXTR_DATAST_MAX,
+ .check = stm32_fmc2_ebi_check_async_trans,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_data_setup,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_bus_turnaround",
+ .reg_type = FMC2_REG_BTR,
+ .reset_val = FMC2_BXTR_BUSTURN_MAX + 1,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_bus_turnaround,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_data_hold",
+ .reg_type = FMC2_REG_BTR,
+ .check = stm32_fmc2_ebi_check_async_trans,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_data_hold,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_clk_period",
+ .reset_val = FMC2_BTR_CLKDIV_MAX + 1,
+ .check = stm32_fmc2_ebi_check_clk_period,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_clk_period,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_data_latency",
+ .check = stm32_fmc2_ebi_check_sync_trans,
+ .set = stm32_fmc2_ebi_set_data_latency,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_write_address_setup",
+ .reg_type = FMC2_REG_BWTR,
+ .reset_val = FMC2_BXTR_ADDSET_MAX,
+ .check = stm32_fmc2_ebi_check_async_trans,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_address_setup,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_write_address_hold",
+ .reg_type = FMC2_REG_BWTR,
+ .reset_val = FMC2_BXTR_ADDHLD_MAX,
+ .check = stm32_fmc2_ebi_check_address_hold,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_address_hold,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_write_data_setup",
+ .reg_type = FMC2_REG_BWTR,
+ .reset_val = FMC2_BXTR_DATAST_MAX,
+ .check = stm32_fmc2_ebi_check_async_trans,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_data_setup,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_write_bus_turnaround",
+ .reg_type = FMC2_REG_BWTR,
+ .reset_val = FMC2_BXTR_BUSTURN_MAX + 1,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_bus_turnaround,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_write_data_hold",
+ .reg_type = FMC2_REG_BWTR,
+ .check = stm32_fmc2_ebi_check_async_trans,
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_data_hold,
+ },
+ {
+ .name = "st,fmc2_ebi_cs_max_low_pulse",
+ .calculate = stm32_fmc2_ebi_timing_ns_to_clock_cycles,
+ .set = stm32_fmc2_ebi_set_max_low_pulse,
+ },
+};
+
+static void stm32_fmc2_ebi_set_bank(struct stm32_fmc2 *fmc2,
+ int cs, bool enable)
+{
+ regmap_update_bits(fmc2->regmap, FMC2_BCR(cs), FMC2_BCR_MBKEN,
+ enable ? FMC2_BCR_MBKEN : 0);
+}
+
+static int stm32_fmc2_ebi_parse_prop(struct device *dev,
+ struct device_node *dev_node,
+ const struct stm32_fmc2_prop *prop,
+ int cs)
+{
+ struct stm32_fmc2 *fmc2 = dev_get_drvdata(dev->parent);
+ u32 setup = 0;
+
+ if (!prop->set) {
+ dev_err(dev, "property %s is not well defined\n", prop->name);
+ return -EINVAL;
+ }
+
+ if (prop->check && prop->check(fmc2, prop, cs))
+ /* Skeep this property */
+ return 0;
+
+ if (prop->bprop) {
+ const __be32 *bprop = of_get_property(dev_node,
+ prop->name, NULL);
+
+ if (prop->mprop && !bprop) {
+ dev_err(dev, "mandatory property %s not defined in the device tree\n",
+ prop->name);
+ return -EINVAL;
+ }
+
+ if (bprop)
+ setup = 1;
+ } else {
+ u32 val;
+ int ret;
+
+ ret = of_property_read_u32(dev_node, prop->name, &val);
+ if (prop->mprop && ret) {
+ dev_err(dev, "mandatory property %s not defined in the device tree\n",
+ prop->name);
+ return ret;
+ }
+
+ if (ret)
+ setup = prop->reset_val;
+ else if (prop->calculate)
+ setup = prop->calculate(fmc2, val);
+ else
+ setup = val;
+ }
+
+ return prop->set(fmc2, prop, cs, setup);
+}
+
+static int stm32_fmc2_ebi_setup_cs(struct device *dev,
+ struct device_node *dev_node,
+ u32 cs)
+{
+ struct stm32_fmc2 *fmc2 = dev_get_drvdata(dev->parent);
+ int i, ret;
+
+ /* Disable the bank */
+ stm32_fmc2_ebi_set_bank(fmc2, cs, false);
+
+ for (i = 0; i < ARRAY_SIZE(stm32_fmc2_child_props); i++) {
+ const struct stm32_fmc2_prop *p = &stm32_fmc2_child_props[i];
+
+ ret = stm32_fmc2_ebi_parse_prop(dev, dev_node, p, cs);
+ if (ret) {
+ dev_err(dev, "property %s could not be set: %d\n",
+ p->name, ret);
+ return ret;
+ }
+ }
+
+ /* Enable the bank */
+ stm32_fmc2_ebi_set_bank(fmc2, cs, true);
+
+ return 0;
+}
+
+static int stm32_fmc2_ebi_parse_dt(struct device *dev,
+ struct stm32_fmc2_ebi *ebi)
+{
+ struct device_node *child;
+ bool child_found = false;
+ u32 cs;
+ int ret;
+
+ for_each_available_child_of_node(dev->of_node, child) {
+ ret = of_property_read_u32(child, "reg", &cs);
+ if (ret) {
+ dev_err(dev, "could not retrieve reg property: %d\n",
+ ret);
+ return ret;
+ }
+
+ if (cs > FMC2_MAX_EBI_CE) {
+ dev_err(dev, "invalid reg value: %d\n", cs);
+ return -EINVAL;
+ }
+
+ if (ebi->cs_assigned & BIT(cs)) {
+ dev_err(dev, "cs already assigned: %d\n", cs);
+ return -EINVAL;
+ }
+
+ ret = stm32_fmc2_ebi_setup_cs(dev, child, cs);
+ if (ret) {
+ dev_err(dev, "setup chip select %d failed: %d\n",
+ cs, ret);
+ return ret;
+ }
+
+ ebi->cs_assigned |= BIT(cs);
+ child_found = true;
+ }
+
+ if (!child_found) {
+ dev_warn(dev, "no subnodes found, disable the driver.\n");
+ return -ENODEV;
+ }
+
+ return of_platform_default_populate(dev->of_node, NULL, dev);
+}
+
+static void stm32_fmc2_ebi_save_setup(struct stm32_fmc2 *fmc2,
+ struct stm32_fmc2_ebi *ebi)
+{
+ unsigned int cs;
+
+ for (cs = 0; cs < FMC2_MAX_EBI_CE; cs++) {
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &ebi->bcr[cs]);
+ regmap_read(fmc2->regmap, FMC2_BTR(cs), &ebi->btr[cs]);
+ regmap_read(fmc2->regmap, FMC2_BWTR(cs), &ebi->bwtr[cs]);
+ }
+
+ regmap_read(fmc2->regmap, FMC2_PCSCNTR, &ebi->pcscntr);
+}
+
+static void stm32_fmc2_ebi_set_setup(struct stm32_fmc2 *fmc2,
+ struct stm32_fmc2_ebi *ebi)
+{
+ unsigned int cs;
+
+ for (cs = 0; cs < FMC2_MAX_EBI_CE; cs++) {
+ regmap_write(fmc2->regmap, FMC2_BCR(cs), ebi->bcr[cs]);
+ regmap_write(fmc2->regmap, FMC2_BTR(cs), ebi->btr[cs]);
+ regmap_write(fmc2->regmap, FMC2_BWTR(cs), ebi->bwtr[cs]);
+ }
+
+ regmap_write(fmc2->regmap, FMC2_PCSCNTR, ebi->pcscntr);
+}
+
+static bool stm32_fmc2_ebi_check_nwait_is_used(struct stm32_fmc2 *fmc2,
+ struct stm32_fmc2_ebi *ebi)
+{
+ unsigned int cs;
+ u32 bcr;
+
+ for (cs = 0; cs < FMC2_MAX_EBI_CE; cs++) {
+ if (!(ebi->cs_assigned & BIT(cs)))
+ continue;
+
+ regmap_read(fmc2->regmap, FMC2_BCR(cs), &bcr);
+ if (bcr & FMC2_BCR_WAITEN || bcr & FMC2_BCR_ASYNCWAIT)
+ return true;
+ }
+
+ return false;
+}
+
+static void stm32_fmc2_ebi_disable_banks(struct stm32_fmc2 *fmc2,
+ struct stm32_fmc2_ebi *ebi)
+{
+ unsigned int cs;
+
+ for (cs = 0; cs < FMC2_MAX_EBI_CE; cs++) {
+ if (!(ebi->cs_assigned & BIT(cs)))
+ continue;
+
+ stm32_fmc2_ebi_set_bank(fmc2, cs, false);
+ }
+}
+
+static int stm32_fmc2_ebi_probe(struct platform_device *pdev)
+{
+ struct stm32_fmc2 *fmc2 = dev_get_drvdata(pdev->dev.parent);
+ struct stm32_fmc2_ebi *ebi;
+ int ret;
+
+ ebi = devm_kzalloc(&pdev->dev, sizeof(*ebi), GFP_KERNEL);
+ if (!ebi)
+ return -ENOMEM;
+
+ ret = clk_prepare_enable(fmc2->clk);
+ if (ret)
+ return ret;
+
+ ret = stm32_fmc2_ebi_parse_dt(&pdev->dev, ebi);
+ if (ret)
+ goto out;
+
+ if (stm32_fmc2_ebi_check_nwait_is_used(fmc2, ebi) &&
+ atomic_inc_return(&fmc2->nwait_is_used) > 1) {
+ dev_err(&pdev->dev,
+ "NWAIT signal in used by a FMC controller\n");
+ atomic_dec(&fmc2->nwait_is_used);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ stm32_fmc2_ebi_save_setup(fmc2, ebi);
+ fmc2->enable(fmc2);
+ platform_set_drvdata(pdev, ebi);
+
+ return 0;
+
+out:
+ stm32_fmc2_ebi_disable_banks(fmc2, ebi);
+ clk_disable_unprepare(fmc2->clk);
+
+ return ret;
+}
+
+static int stm32_fmc2_ebi_remove(struct platform_device *pdev)
+{
+ struct stm32_fmc2 *fmc2 = dev_get_drvdata(pdev->dev.parent);
+ struct stm32_fmc2_ebi *ebi = platform_get_drvdata(pdev);
+
+ if (stm32_fmc2_ebi_check_nwait_is_used(fmc2, ebi))
+ atomic_dec(&fmc2->nwait_is_used);
+ stm32_fmc2_ebi_disable_banks(fmc2, ebi);
+ fmc2->disable(fmc2);
+ clk_disable_unprepare(fmc2->clk);
+
+ return 0;
+}
+
+static int __maybe_unused stm32_fmc2_ebi_suspend(struct device *dev)
+{
+ struct stm32_fmc2 *fmc2 = dev_get_drvdata(dev->parent);
+
+ fmc2->disable(fmc2);
+ clk_disable_unprepare(fmc2->clk);
+
+ return 0;
+}
+
+static int __maybe_unused stm32_fmc2_ebi_resume(struct device *dev)
+{
+ struct stm32_fmc2 *fmc2 = dev_get_drvdata(dev->parent);
+ struct stm32_fmc2_ebi *ebi = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(fmc2->clk);
+ if (ret)
+ return ret;
+
+ stm32_fmc2_ebi_set_setup(fmc2, ebi);
+ fmc2->enable(fmc2);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(stm32_fmc2_ebi_pm_ops, stm32_fmc2_ebi_suspend,
+ stm32_fmc2_ebi_resume);
+
+static const struct of_device_id stm32_fmc2_ebi_match[] = {
+ {.compatible = "st,stm32mp1-fmc2-ebi"},
+ {}
+};
+MODULE_DEVICE_TABLE(of, stm32_fmc2_ebi_match);
+
+static struct platform_driver stm32_fmc2_ebi_driver = {
+ .probe = stm32_fmc2_ebi_probe,
+ .remove = stm32_fmc2_ebi_remove,
+ .driver = {
+ .name = "stm32_fmc2_ebi",
+ .of_match_table = stm32_fmc2_ebi_match,
+ .pm = &stm32_fmc2_ebi_pm_ops,
+ },
+};
+module_platform_driver(stm32_fmc2_ebi_driver);
+
+MODULE_ALIAS("platform:stm32_fmc2_ebi");
+MODULE_AUTHOR("Christophe Kerello <christophe.kerello@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics STM32 FMC2 ebi driver");
+MODULE_LICENSE("GPL v2");
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [04/12] mtd: rawnand: stm32_fmc2: manage all errors cases at probe time
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (2 preceding siblings ...)
2020-03-23 14:58 ` [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI " Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-23 14:58 ` [05/12] mtd: rawnand: stm32_fmc2: remove useless inline comments Christophe Kerello
` (8 subsequent siblings)
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch defers its probe when the expected reset control is not
yet ready. This patch also handles properly all errors cases at probe
time.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index b6d45cd..0a96797 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -1967,7 +1967,11 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
}
rstc = devm_reset_control_get(dev, NULL);
- if (!IS_ERR(rstc)) {
+ if (IS_ERR(rstc)) {
+ ret = PTR_ERR(rstc);
+ if (ret == -EPROBE_DEFER)
+ goto err_clk_disable;
+ } else {
reset_control_assert(rstc);
reset_control_deassert(rstc);
}
@@ -1975,7 +1979,7 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
/* DMA setup */
ret = stm32_fmc2_dma_setup(fmc2);
if (ret)
- return ret;
+ goto err_dma_setup;
/* FMC2 init routine */
stm32_fmc2_init(fmc2);
@@ -1997,7 +2001,7 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
/* Scan to find existence of the device */
ret = nand_scan(chip, nand->ncs);
if (ret)
- goto err_scan;
+ goto err_dma_setup;
ret = mtd_device_register(mtd, NULL, 0);
if (ret)
@@ -2010,7 +2014,7 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
err_device_register:
nand_cleanup(chip);
-err_scan:
+err_dma_setup:
if (fmc2->dma_ecc_ch)
dma_release_channel(fmc2->dma_ecc_ch);
if (fmc2->dma_tx_ch)
@@ -2021,6 +2025,7 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
sg_free_table(&fmc2->dma_data_sg);
sg_free_table(&fmc2->dma_ecc_sg);
+err_clk_disable:
clk_disable_unprepare(fmc2->clk);
return ret;
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [05/12] mtd: rawnand: stm32_fmc2: remove useless inline comments
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (3 preceding siblings ...)
2020-03-23 14:58 ` [04/12] mtd: rawnand: stm32_fmc2: manage all errors cases at probe time Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-23 14:58 ` [06/12] mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts Christophe Kerello
` (7 subsequent siblings)
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
Remove inline comments that are useless since function label are
self explanatory.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 40 ----------------------------------
1 file changed, 40 deletions(-)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 0a96797..ab53314 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -281,7 +281,6 @@ static inline struct stm32_fmc2_nfc *to_stm32_nfc(struct nand_controller *base)
return container_of(base, struct stm32_fmc2_nfc, base);
}
-/* Timings configuration */
static void stm32_fmc2_timings_init(struct nand_chip *chip)
{
struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
@@ -313,7 +312,6 @@ static void stm32_fmc2_timings_init(struct nand_chip *chip)
writel_relaxed(patt, fmc2->io_base + FMC2_PATT);
}
-/* Controller configuration */
static void stm32_fmc2_setup(struct nand_chip *chip)
{
struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
@@ -341,7 +339,6 @@ static void stm32_fmc2_setup(struct nand_chip *chip)
writel_relaxed(pcr, fmc2->io_base + FMC2_PCR);
}
-/* Select target */
static int stm32_fmc2_select_chip(struct nand_chip *chip, int chipnr)
{
struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
@@ -353,11 +350,7 @@ static int stm32_fmc2_select_chip(struct nand_chip *chip, int chipnr)
return 0;
fmc2->cs_sel = nand->cs_used[chipnr];
-
- /* FMC2 setup routine */
stm32_fmc2_setup(chip);
-
- /* Apply timings */
stm32_fmc2_timings_init(chip);
if (fmc2->dma_tx_ch && fmc2->dma_rx_ch) {
@@ -407,7 +400,6 @@ static int stm32_fmc2_select_chip(struct nand_chip *chip, int chipnr)
return 0;
}
-/* Set bus width to 16-bit or 8-bit */
static void stm32_fmc2_set_buswidth_16(struct stm32_fmc2_nfc *fmc2, bool set)
{
u32 pcr = readl_relaxed(fmc2->io_base + FMC2_PCR);
@@ -418,7 +410,6 @@ static void stm32_fmc2_set_buswidth_16(struct stm32_fmc2_nfc *fmc2, bool set)
writel_relaxed(pcr, fmc2->io_base + FMC2_PCR);
}
-/* Enable/disable ECC */
static void stm32_fmc2_set_ecc(struct stm32_fmc2_nfc *fmc2, bool enable)
{
u32 pcr = readl(fmc2->io_base + FMC2_PCR);
@@ -429,7 +420,6 @@ static void stm32_fmc2_set_ecc(struct stm32_fmc2_nfc *fmc2, bool enable)
writel(pcr, fmc2->io_base + FMC2_PCR);
}
-/* Enable irq sources in case of the sequencer is used */
static inline void stm32_fmc2_enable_seq_irq(struct stm32_fmc2_nfc *fmc2)
{
u32 csqier = readl_relaxed(fmc2->io_base + FMC2_CSQIER);
@@ -441,7 +431,6 @@ static inline void stm32_fmc2_enable_seq_irq(struct stm32_fmc2_nfc *fmc2)
writel_relaxed(csqier, fmc2->io_base + FMC2_CSQIER);
}
-/* Disable irq sources in case of the sequencer is used */
static inline void stm32_fmc2_disable_seq_irq(struct stm32_fmc2_nfc *fmc2)
{
u32 csqier = readl_relaxed(fmc2->io_base + FMC2_CSQIER);
@@ -453,13 +442,11 @@ static inline void stm32_fmc2_disable_seq_irq(struct stm32_fmc2_nfc *fmc2)
fmc2->irq_state = FMC2_IRQ_UNKNOWN;
}
-/* Clear irq sources in case of the sequencer is used */
static inline void stm32_fmc2_clear_seq_irq(struct stm32_fmc2_nfc *fmc2)
{
writel_relaxed(FMC2_CSQICR_CLEAR_IRQ, fmc2->io_base + FMC2_CSQICR);
}
-/* Enable irq sources in case of bch is used */
static inline void stm32_fmc2_enable_bch_irq(struct stm32_fmc2_nfc *fmc2,
int mode)
{
@@ -475,7 +462,6 @@ static inline void stm32_fmc2_enable_bch_irq(struct stm32_fmc2_nfc *fmc2,
writel_relaxed(bchier, fmc2->io_base + FMC2_BCHIER);
}
-/* Disable irq sources in case of bch is used */
static inline void stm32_fmc2_disable_bch_irq(struct stm32_fmc2_nfc *fmc2)
{
u32 bchier = readl_relaxed(fmc2->io_base + FMC2_BCHIER);
@@ -488,7 +474,6 @@ static inline void stm32_fmc2_disable_bch_irq(struct stm32_fmc2_nfc *fmc2)
fmc2->irq_state = FMC2_IRQ_UNKNOWN;
}
-/* Clear irq sources in case of bch is used */
static inline void stm32_fmc2_clear_bch_irq(struct stm32_fmc2_nfc *fmc2)
{
writel_relaxed(FMC2_BCHICR_CLEAR_IRQ, fmc2->io_base + FMC2_BCHICR);
@@ -549,10 +534,7 @@ static int stm32_fmc2_ham_calculate(struct nand_chip *chip, const u8 *data,
}
heccr = readl_relaxed(fmc2->io_base + FMC2_HECCR);
-
stm32_fmc2_ham_set_ecc(heccr, ecc);
-
- /* Disable ECC */
stm32_fmc2_set_ecc(fmc2, false);
return 0;
@@ -654,13 +636,11 @@ static int stm32_fmc2_bch_calculate(struct nand_chip *chip, const u8 *data,
ecc[12] = bchpbr;
}
- /* Disable ECC */
stm32_fmc2_set_ecc(fmc2, false);
return 0;
}
-/* BCH algorithm correction */
static int stm32_fmc2_bch_decode(int eccsize, u8 *dat, u32 *ecc_sta)
{
u32 bchdsr0 = ecc_sta[0];
@@ -720,7 +700,6 @@ static int stm32_fmc2_bch_correct(struct nand_chip *chip, u8 *dat,
ecc_sta[3] = readl_relaxed(fmc2->io_base + FMC2_BCHDSR3);
ecc_sta[4] = readl_relaxed(fmc2->io_base + FMC2_BCHDSR4);
- /* Disable ECC */
stm32_fmc2_set_ecc(fmc2, false);
return stm32_fmc2_bch_decode(chip->ecc.size, dat, ecc_sta);
@@ -1054,7 +1033,6 @@ static int stm32_fmc2_sequencer_write_page(struct nand_chip *chip,
{
int ret;
- /* Select the target */
ret = stm32_fmc2_select_chip(chip, chip->cur_cs);
if (ret)
return ret;
@@ -1069,7 +1047,6 @@ static int stm32_fmc2_sequencer_write_page_raw(struct nand_chip *chip,
{
int ret;
- /* Select the target */
ret = stm32_fmc2_select_chip(chip, chip->cur_cs);
if (ret)
return ret;
@@ -1153,7 +1130,6 @@ static int stm32_fmc2_sequencer_read_page(struct nand_chip *chip, u8 *buf,
u16 sta_map;
int ret;
- /* Select the target */
ret = stm32_fmc2_select_chip(chip, chip->cur_cs);
if (ret)
return ret;
@@ -1199,7 +1175,6 @@ static int stm32_fmc2_sequencer_read_page_raw(struct nand_chip *chip, u8 *buf,
struct mtd_info *mtd = nand_to_mtd(chip);
int ret;
- /* Select the target */
ret = stm32_fmc2_select_chip(chip, chip->cur_cs);
if (ret)
return ret;
@@ -1409,7 +1384,6 @@ static int stm32_fmc2_exec_op(struct nand_chip *chip,
return ret;
}
-/* Controller initialization */
static void stm32_fmc2_init(struct stm32_fmc2_nfc *fmc2)
{
u32 pcr = readl_relaxed(fmc2->io_base + FMC2_PCR);
@@ -1452,7 +1426,6 @@ static void stm32_fmc2_init(struct stm32_fmc2_nfc *fmc2)
writel_relaxed(FMC2_PATT_DEFAULT, fmc2->io_base + FMC2_PATT);
}
-/* Controller timings */
static void stm32_fmc2_calc_timings(struct nand_chip *chip,
const struct nand_sdr_timings *sdrt)
{
@@ -1596,14 +1569,11 @@ static int stm32_fmc2_setup_interface(struct nand_chip *chip, int chipnr,
return 0;
stm32_fmc2_calc_timings(chip, sdrt);
-
- /* Apply timings */
stm32_fmc2_timings_init(chip);
return 0;
}
-/* DMA configuration */
static int stm32_fmc2_dma_setup(struct stm32_fmc2_nfc *fmc2)
{
int ret = 0;
@@ -1667,7 +1637,6 @@ static int stm32_fmc2_dma_setup(struct stm32_fmc2_nfc *fmc2)
return ret;
}
-/* NAND callbacks setup */
static void stm32_fmc2_nand_callbacks_setup(struct nand_chip *chip)
{
struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
@@ -1708,7 +1677,6 @@ static void stm32_fmc2_nand_callbacks_setup(struct nand_chip *chip)
chip->ecc.bytes = chip->options & NAND_BUSWIDTH_16 ? 8 : 7;
}
-/* FMC2 layout */
static int stm32_fmc2_nand_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *oobregion)
{
@@ -1744,7 +1712,6 @@ static int stm32_fmc2_nand_ooblayout_free(struct mtd_info *mtd, int section,
.free = stm32_fmc2_nand_ooblayout_free,
};
-/* FMC2 caps */
static int stm32_fmc2_calc_ecc_bytes(int step_size, int strength)
{
/* Hamming */
@@ -1763,7 +1730,6 @@ static int stm32_fmc2_calc_ecc_bytes(int step_size, int strength)
FMC2_ECC_STEP_SIZE,
FMC2_ECC_HAM, FMC2_ECC_BCH4, FMC2_ECC_BCH8);
-/* FMC2 controller ops */
static int stm32_fmc2_attach_chip(struct nand_chip *chip)
{
struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
@@ -1797,13 +1763,10 @@ static int stm32_fmc2_attach_chip(struct nand_chip *chip)
if (chip->bbt_options & NAND_BBT_USE_FLASH)
chip->bbt_options |= NAND_BBT_NO_OOB;
- /* NAND callbacks setup */
stm32_fmc2_nand_callbacks_setup(chip);
- /* Define ECC layout */
mtd_set_ooblayout(mtd, &stm32_fmc2_nand_ooblayout_ops);
- /* Configure bus width to 16-bit */
if (chip->options & NAND_BUSWIDTH_16)
stm32_fmc2_set_buswidth_16(fmc2, true);
@@ -1816,7 +1779,6 @@ static int stm32_fmc2_attach_chip(struct nand_chip *chip)
.setup_data_interface = stm32_fmc2_setup_interface,
};
-/* FMC2 probe */
static int stm32_fmc2_parse_child(struct stm32_fmc2_nfc *fmc2,
struct device_node *dn)
{
@@ -1976,12 +1938,10 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
reset_control_deassert(rstc);
}
- /* DMA setup */
ret = stm32_fmc2_dma_setup(fmc2);
if (ret)
goto err_dma_setup;
- /* FMC2 init routine */
stm32_fmc2_init(fmc2);
nand = &fmc2->nand;
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [06/12] mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (4 preceding siblings ...)
2020-03-23 14:58 ` [05/12] mtd: rawnand: stm32_fmc2: remove useless inline comments Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-23 14:58 ` [07/12] mtd: rawnand: stm32_fmc2: cleanup Christophe Kerello
` (6 subsequent siblings)
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch removes the constant FMC2_TIMEOUT_US.
FMC2_TIMEOUT_MS is set to 5 seconds and this constant is used
each time that we need to wait (except when the timeout value
is set by the framework)
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index ab53314..f159c39 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -37,8 +37,7 @@
/* Max ECC buffer length */
#define FMC2_MAX_ECC_BUF_LEN (FMC2_BCHDSRS_LEN * FMC2_MAX_SG)
-#define FMC2_TIMEOUT_US 1000
-#define FMC2_TIMEOUT_MS 1000
+#define FMC2_TIMEOUT_MS 5000
/* Timings */
#define FMC2_THIZ 1
@@ -525,9 +524,9 @@ static int stm32_fmc2_ham_calculate(struct nand_chip *chip, const u8 *data,
u32 sr, heccr;
int ret;
- ret = readl_relaxed_poll_timeout(fmc2->io_base + FMC2_SR,
- sr, sr & FMC2_SR_NWRF, 10,
- FMC2_TIMEOUT_MS);
+ ret = readl_relaxed_poll_timeout_atomic(fmc2->io_base + FMC2_SR,
+ sr, sr & FMC2_SR_NWRF, 1,
+ 1000 * FMC2_TIMEOUT_MS);
if (ret) {
dev_err(fmc2->dev, "ham timeout\n");
return ret;
@@ -1315,7 +1314,7 @@ static int stm32_fmc2_waitrdy(struct nand_chip *chip, unsigned long timeout_ms)
/* Check if there is no pending requests to the NAND flash */
if (readl_relaxed_poll_timeout_atomic(fmc2->io_base + FMC2_SR, sr,
sr & FMC2_SR_NWRF, 1,
- FMC2_TIMEOUT_US))
+ 1000 * FMC2_TIMEOUT_MS))
dev_warn(fmc2->dev, "Waitrdy timeout\n");
/* Wait tWB before R/B# signal is low */
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [07/12] mtd: rawnand: stm32_fmc2: cleanup
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (5 preceding siblings ...)
2020-03-23 14:58 ` [06/12] mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-23 14:58 ` [08/12] mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros Christophe Kerello
` (5 subsequent siblings)
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch renames functions and local variables to be ready to use
stm32_fmc2 structure.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 812 ++++++++++++++++-----------------
1 file changed, 404 insertions(+), 408 deletions(-)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index f159c39..9ce405d 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -280,12 +280,12 @@ static inline struct stm32_fmc2_nfc *to_stm32_nfc(struct nand_controller *base)
return container_of(base, struct stm32_fmc2_nfc, base);
}
-static void stm32_fmc2_timings_init(struct nand_chip *chip)
+static void stm32_fmc2_nfc_timings_init(struct nand_chip *chip)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct stm32_fmc2_nand *nand = to_fmc2_nand(chip);
struct stm32_fmc2_timings *timings = &nand->timings;
- u32 pcr = readl_relaxed(fmc2->io_base + FMC2_PCR);
+ u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
u32 pmem, patt;
/* Set tclr/tar timings */
@@ -306,15 +306,15 @@ static void stm32_fmc2_timings_init(struct nand_chip *chip)
patt |= FMC2_PATT_ATTHOLD(timings->thold_att);
patt |= FMC2_PATT_ATTHIZ(timings->thiz);
- writel_relaxed(pcr, fmc2->io_base + FMC2_PCR);
- writel_relaxed(pmem, fmc2->io_base + FMC2_PMEM);
- writel_relaxed(patt, fmc2->io_base + FMC2_PATT);
+ writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
+ writel_relaxed(pmem, nfc->io_base + FMC2_PMEM);
+ writel_relaxed(patt, nfc->io_base + FMC2_PATT);
}
-static void stm32_fmc2_setup(struct nand_chip *chip)
+static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
- u32 pcr = readl_relaxed(fmc2->io_base + FMC2_PCR);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
/* Configure ECC algorithm (default configuration is Hamming) */
pcr &= ~FMC2_PCR_ECCALG;
@@ -335,174 +335,174 @@ static void stm32_fmc2_setup(struct nand_chip *chip)
pcr &= ~FMC2_PCR_ECCSS_MASK;
pcr |= FMC2_PCR_ECCSS(FMC2_PCR_ECCSS_512);
- writel_relaxed(pcr, fmc2->io_base + FMC2_PCR);
+ writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
}
-static int stm32_fmc2_select_chip(struct nand_chip *chip, int chipnr)
+static int stm32_fmc2_nfc_select_chip(struct nand_chip *chip, int chipnr)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct stm32_fmc2_nand *nand = to_fmc2_nand(chip);
struct dma_slave_config dma_cfg;
int ret;
- if (nand->cs_used[chipnr] == fmc2->cs_sel)
+ if (nand->cs_used[chipnr] == nfc->cs_sel)
return 0;
- fmc2->cs_sel = nand->cs_used[chipnr];
- stm32_fmc2_setup(chip);
- stm32_fmc2_timings_init(chip);
+ nfc->cs_sel = nand->cs_used[chipnr];
+ stm32_fmc2_nfc_setup(chip);
+ stm32_fmc2_nfc_timings_init(chip);
- if (fmc2->dma_tx_ch && fmc2->dma_rx_ch) {
+ if (nfc->dma_tx_ch && nfc->dma_rx_ch) {
memset(&dma_cfg, 0, sizeof(dma_cfg));
- dma_cfg.src_addr = fmc2->data_phys_addr[fmc2->cs_sel];
- dma_cfg.dst_addr = fmc2->data_phys_addr[fmc2->cs_sel];
+ dma_cfg.src_addr = nfc->data_phys_addr[nfc->cs_sel];
+ dma_cfg.dst_addr = nfc->data_phys_addr[nfc->cs_sel];
dma_cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
dma_cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
dma_cfg.src_maxburst = 32;
dma_cfg.dst_maxburst = 32;
- ret = dmaengine_slave_config(fmc2->dma_tx_ch, &dma_cfg);
+ ret = dmaengine_slave_config(nfc->dma_tx_ch, &dma_cfg);
if (ret) {
- dev_err(fmc2->dev, "tx DMA engine slave config failed\n");
+ dev_err(nfc->dev, "tx DMA engine slave config failed\n");
return ret;
}
- ret = dmaengine_slave_config(fmc2->dma_rx_ch, &dma_cfg);
+ ret = dmaengine_slave_config(nfc->dma_rx_ch, &dma_cfg);
if (ret) {
- dev_err(fmc2->dev, "rx DMA engine slave config failed\n");
+ dev_err(nfc->dev, "rx DMA engine slave config failed\n");
return ret;
}
}
- if (fmc2->dma_ecc_ch) {
+ if (nfc->dma_ecc_ch) {
/*
* Hamming: we read HECCR register
* BCH4/BCH8: we read BCHDSRSx registers
*/
memset(&dma_cfg, 0, sizeof(dma_cfg));
- dma_cfg.src_addr = fmc2->io_phys_addr;
+ dma_cfg.src_addr = nfc->io_phys_addr;
dma_cfg.src_addr += chip->ecc.strength == FMC2_ECC_HAM ?
FMC2_HECCR : FMC2_BCHDSR0;
dma_cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- ret = dmaengine_slave_config(fmc2->dma_ecc_ch, &dma_cfg);
+ ret = dmaengine_slave_config(nfc->dma_ecc_ch, &dma_cfg);
if (ret) {
- dev_err(fmc2->dev, "ECC DMA engine slave config failed\n");
+ dev_err(nfc->dev, "ECC DMA engine slave config failed\n");
return ret;
}
/* Calculate ECC length needed for one sector */
- fmc2->dma_ecc_len = chip->ecc.strength == FMC2_ECC_HAM ?
- FMC2_HECCR_LEN : FMC2_BCHDSRS_LEN;
+ nfc->dma_ecc_len = chip->ecc.strength == FMC2_ECC_HAM ?
+ FMC2_HECCR_LEN : FMC2_BCHDSRS_LEN;
}
return 0;
}
-static void stm32_fmc2_set_buswidth_16(struct stm32_fmc2_nfc *fmc2, bool set)
+static void stm32_fmc2_nfc_set_buswidth_16(struct stm32_fmc2_nfc *nfc, bool set)
{
- u32 pcr = readl_relaxed(fmc2->io_base + FMC2_PCR);
+ u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
pcr &= ~FMC2_PCR_PWID_MASK;
if (set)
pcr |= FMC2_PCR_PWID(FMC2_PCR_PWID_BUSWIDTH_16);
- writel_relaxed(pcr, fmc2->io_base + FMC2_PCR);
+ writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
}
-static void stm32_fmc2_set_ecc(struct stm32_fmc2_nfc *fmc2, bool enable)
+static void stm32_fmc2_nfc_set_ecc(struct stm32_fmc2_nfc *nfc, bool enable)
{
- u32 pcr = readl(fmc2->io_base + FMC2_PCR);
+ u32 pcr = readl(nfc->io_base + FMC2_PCR);
pcr &= ~FMC2_PCR_ECCEN;
if (enable)
pcr |= FMC2_PCR_ECCEN;
- writel(pcr, fmc2->io_base + FMC2_PCR);
+ writel(pcr, nfc->io_base + FMC2_PCR);
}
-static inline void stm32_fmc2_enable_seq_irq(struct stm32_fmc2_nfc *fmc2)
+static inline void stm32_fmc2_nfc_enable_seq_irq(struct stm32_fmc2_nfc *nfc)
{
- u32 csqier = readl_relaxed(fmc2->io_base + FMC2_CSQIER);
+ u32 csqier = readl_relaxed(nfc->io_base + FMC2_CSQIER);
csqier |= FMC2_CSQIER_TCIE;
- fmc2->irq_state = FMC2_IRQ_SEQ;
+ nfc->irq_state = FMC2_IRQ_SEQ;
- writel_relaxed(csqier, fmc2->io_base + FMC2_CSQIER);
+ writel_relaxed(csqier, nfc->io_base + FMC2_CSQIER);
}
-static inline void stm32_fmc2_disable_seq_irq(struct stm32_fmc2_nfc *fmc2)
+static inline void stm32_fmc2_nfc_disable_seq_irq(struct stm32_fmc2_nfc *nfc)
{
- u32 csqier = readl_relaxed(fmc2->io_base + FMC2_CSQIER);
+ u32 csqier = readl_relaxed(nfc->io_base + FMC2_CSQIER);
csqier &= ~FMC2_CSQIER_TCIE;
- writel_relaxed(csqier, fmc2->io_base + FMC2_CSQIER);
+ writel_relaxed(csqier, nfc->io_base + FMC2_CSQIER);
- fmc2->irq_state = FMC2_IRQ_UNKNOWN;
+ nfc->irq_state = FMC2_IRQ_UNKNOWN;
}
-static inline void stm32_fmc2_clear_seq_irq(struct stm32_fmc2_nfc *fmc2)
+static inline void stm32_fmc2_nfc_clear_seq_irq(struct stm32_fmc2_nfc *nfc)
{
- writel_relaxed(FMC2_CSQICR_CLEAR_IRQ, fmc2->io_base + FMC2_CSQICR);
+ writel_relaxed(FMC2_CSQICR_CLEAR_IRQ, nfc->io_base + FMC2_CSQICR);
}
-static inline void stm32_fmc2_enable_bch_irq(struct stm32_fmc2_nfc *fmc2,
- int mode)
+static inline void stm32_fmc2_nfc_enable_bch_irq(struct stm32_fmc2_nfc *nfc,
+ int mode)
{
- u32 bchier = readl_relaxed(fmc2->io_base + FMC2_BCHIER);
+ u32 bchier = readl_relaxed(nfc->io_base + FMC2_BCHIER);
if (mode == NAND_ECC_WRITE)
bchier |= FMC2_BCHIER_EPBRIE;
else
bchier |= FMC2_BCHIER_DERIE;
- fmc2->irq_state = FMC2_IRQ_BCH;
+ nfc->irq_state = FMC2_IRQ_BCH;
- writel_relaxed(bchier, fmc2->io_base + FMC2_BCHIER);
+ writel_relaxed(bchier, nfc->io_base + FMC2_BCHIER);
}
-static inline void stm32_fmc2_disable_bch_irq(struct stm32_fmc2_nfc *fmc2)
+static inline void stm32_fmc2_nfc_disable_bch_irq(struct stm32_fmc2_nfc *nfc)
{
- u32 bchier = readl_relaxed(fmc2->io_base + FMC2_BCHIER);
+ u32 bchier = readl_relaxed(nfc->io_base + FMC2_BCHIER);
bchier &= ~FMC2_BCHIER_DERIE;
bchier &= ~FMC2_BCHIER_EPBRIE;
- writel_relaxed(bchier, fmc2->io_base + FMC2_BCHIER);
+ writel_relaxed(bchier, nfc->io_base + FMC2_BCHIER);
- fmc2->irq_state = FMC2_IRQ_UNKNOWN;
+ nfc->irq_state = FMC2_IRQ_UNKNOWN;
}
-static inline void stm32_fmc2_clear_bch_irq(struct stm32_fmc2_nfc *fmc2)
+static inline void stm32_fmc2_nfc_clear_bch_irq(struct stm32_fmc2_nfc *nfc)
{
- writel_relaxed(FMC2_BCHICR_CLEAR_IRQ, fmc2->io_base + FMC2_BCHICR);
+ writel_relaxed(FMC2_BCHICR_CLEAR_IRQ, nfc->io_base + FMC2_BCHICR);
}
/*
* Enable ECC logic and reset syndrome/parity bits previously calculated
* Syndrome/parity bits is cleared by setting the ECCEN bit to 0
*/
-static void stm32_fmc2_hwctl(struct nand_chip *chip, int mode)
+static void stm32_fmc2_nfc_hwctl(struct nand_chip *chip, int mode)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
- stm32_fmc2_set_ecc(fmc2, false);
+ stm32_fmc2_nfc_set_ecc(nfc, false);
if (chip->ecc.strength != FMC2_ECC_HAM) {
- u32 pcr = readl_relaxed(fmc2->io_base + FMC2_PCR);
+ u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
if (mode == NAND_ECC_WRITE)
pcr |= FMC2_PCR_WEN;
else
pcr &= ~FMC2_PCR_WEN;
- writel_relaxed(pcr, fmc2->io_base + FMC2_PCR);
+ writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
- reinit_completion(&fmc2->complete);
- stm32_fmc2_clear_bch_irq(fmc2);
- stm32_fmc2_enable_bch_irq(fmc2, mode);
+ reinit_completion(&nfc->complete);
+ stm32_fmc2_nfc_clear_bch_irq(nfc);
+ stm32_fmc2_nfc_enable_bch_irq(nfc, mode);
}
- stm32_fmc2_set_ecc(fmc2, true);
+ stm32_fmc2_nfc_set_ecc(nfc, true);
}
/*
@@ -510,37 +510,37 @@ static void stm32_fmc2_hwctl(struct nand_chip *chip, int mode)
* ECC is 3 bytes for 512 bytes of data (supports error correction up to
* max of 1-bit)
*/
-static inline void stm32_fmc2_ham_set_ecc(const u32 ecc_sta, u8 *ecc)
+static inline void stm32_fmc2_nfc_ham_set_ecc(const u32 ecc_sta, u8 *ecc)
{
ecc[0] = ecc_sta;
ecc[1] = ecc_sta >> 8;
ecc[2] = ecc_sta >> 16;
}
-static int stm32_fmc2_ham_calculate(struct nand_chip *chip, const u8 *data,
- u8 *ecc)
+static int stm32_fmc2_nfc_ham_calculate(struct nand_chip *chip, const u8 *data,
+ u8 *ecc)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
u32 sr, heccr;
int ret;
- ret = readl_relaxed_poll_timeout_atomic(fmc2->io_base + FMC2_SR,
+ ret = readl_relaxed_poll_timeout_atomic(nfc->io_base + FMC2_SR,
sr, sr & FMC2_SR_NWRF, 1,
1000 * FMC2_TIMEOUT_MS);
if (ret) {
- dev_err(fmc2->dev, "ham timeout\n");
+ dev_err(nfc->dev, "ham timeout\n");
return ret;
}
- heccr = readl_relaxed(fmc2->io_base + FMC2_HECCR);
- stm32_fmc2_ham_set_ecc(heccr, ecc);
- stm32_fmc2_set_ecc(fmc2, false);
+ heccr = readl_relaxed(nfc->io_base + FMC2_HECCR);
+ stm32_fmc2_nfc_ham_set_ecc(heccr, ecc);
+ stm32_fmc2_nfc_set_ecc(nfc, false);
return 0;
}
-static int stm32_fmc2_ham_correct(struct nand_chip *chip, u8 *dat,
- u8 *read_ecc, u8 *calc_ecc)
+static int stm32_fmc2_nfc_ham_correct(struct nand_chip *chip, u8 *dat,
+ u8 *read_ecc, u8 *calc_ecc)
{
u8 bit_position = 0, b0, b1, b2;
u32 byte_addr = 0, b;
@@ -596,28 +596,28 @@ static int stm32_fmc2_ham_correct(struct nand_chip *chip, u8 *dat,
* ECC is 7/13 bytes for 512 bytes of data (supports error correction up to
* max of 4-bit/8-bit)
*/
-static int stm32_fmc2_bch_calculate(struct nand_chip *chip, const u8 *data,
- u8 *ecc)
+static int stm32_fmc2_nfc_bch_calculate(struct nand_chip *chip, const u8 *data,
+ u8 *ecc)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
u32 bchpbr;
/* Wait until the BCH code is ready */
- if (!wait_for_completion_timeout(&fmc2->complete,
+ if (!wait_for_completion_timeout(&nfc->complete,
msecs_to_jiffies(FMC2_TIMEOUT_MS))) {
- dev_err(fmc2->dev, "bch timeout\n");
- stm32_fmc2_disable_bch_irq(fmc2);
+ dev_err(nfc->dev, "bch timeout\n");
+ stm32_fmc2_nfc_disable_bch_irq(nfc);
return -ETIMEDOUT;
}
/* Read parity bits */
- bchpbr = readl_relaxed(fmc2->io_base + FMC2_BCHPBR1);
+ bchpbr = readl_relaxed(nfc->io_base + FMC2_BCHPBR1);
ecc[0] = bchpbr;
ecc[1] = bchpbr >> 8;
ecc[2] = bchpbr >> 16;
ecc[3] = bchpbr >> 24;
- bchpbr = readl_relaxed(fmc2->io_base + FMC2_BCHPBR2);
+ bchpbr = readl_relaxed(nfc->io_base + FMC2_BCHPBR2);
ecc[4] = bchpbr;
ecc[5] = bchpbr >> 8;
ecc[6] = bchpbr >> 16;
@@ -625,22 +625,22 @@ static int stm32_fmc2_bch_calculate(struct nand_chip *chip, const u8 *data,
if (chip->ecc.strength == FMC2_ECC_BCH8) {
ecc[7] = bchpbr >> 24;
- bchpbr = readl_relaxed(fmc2->io_base + FMC2_BCHPBR3);
+ bchpbr = readl_relaxed(nfc->io_base + FMC2_BCHPBR3);
ecc[8] = bchpbr;
ecc[9] = bchpbr >> 8;
ecc[10] = bchpbr >> 16;
ecc[11] = bchpbr >> 24;
- bchpbr = readl_relaxed(fmc2->io_base + FMC2_BCHPBR4);
+ bchpbr = readl_relaxed(nfc->io_base + FMC2_BCHPBR4);
ecc[12] = bchpbr;
}
- stm32_fmc2_set_ecc(fmc2, false);
+ stm32_fmc2_nfc_set_ecc(nfc, false);
return 0;
}
-static int stm32_fmc2_bch_decode(int eccsize, u8 *dat, u32 *ecc_sta)
+static int stm32_fmc2_nfc_bch_decode(int eccsize, u8 *dat, u32 *ecc_sta)
{
u32 bchdsr0 = ecc_sta[0];
u32 bchdsr1 = ecc_sta[1];
@@ -679,33 +679,33 @@ static int stm32_fmc2_bch_decode(int eccsize, u8 *dat, u32 *ecc_sta)
return nb_errs;
}
-static int stm32_fmc2_bch_correct(struct nand_chip *chip, u8 *dat,
- u8 *read_ecc, u8 *calc_ecc)
+static int stm32_fmc2_nfc_bch_correct(struct nand_chip *chip, u8 *dat,
+ u8 *read_ecc, u8 *calc_ecc)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
u32 ecc_sta[5];
/* Wait until the decoding error is ready */
- if (!wait_for_completion_timeout(&fmc2->complete,
+ if (!wait_for_completion_timeout(&nfc->complete,
msecs_to_jiffies(FMC2_TIMEOUT_MS))) {
- dev_err(fmc2->dev, "bch timeout\n");
- stm32_fmc2_disable_bch_irq(fmc2);
+ dev_err(nfc->dev, "bch timeout\n");
+ stm32_fmc2_nfc_disable_bch_irq(nfc);
return -ETIMEDOUT;
}
- ecc_sta[0] = readl_relaxed(fmc2->io_base + FMC2_BCHDSR0);
- ecc_sta[1] = readl_relaxed(fmc2->io_base + FMC2_BCHDSR1);
- ecc_sta[2] = readl_relaxed(fmc2->io_base + FMC2_BCHDSR2);
- ecc_sta[3] = readl_relaxed(fmc2->io_base + FMC2_BCHDSR3);
- ecc_sta[4] = readl_relaxed(fmc2->io_base + FMC2_BCHDSR4);
+ ecc_sta[0] = readl_relaxed(nfc->io_base + FMC2_BCHDSR0);
+ ecc_sta[1] = readl_relaxed(nfc->io_base + FMC2_BCHDSR1);
+ ecc_sta[2] = readl_relaxed(nfc->io_base + FMC2_BCHDSR2);
+ ecc_sta[3] = readl_relaxed(nfc->io_base + FMC2_BCHDSR3);
+ ecc_sta[4] = readl_relaxed(nfc->io_base + FMC2_BCHDSR4);
- stm32_fmc2_set_ecc(fmc2, false);
+ stm32_fmc2_nfc_set_ecc(nfc, false);
- return stm32_fmc2_bch_decode(chip->ecc.size, dat, ecc_sta);
+ return stm32_fmc2_nfc_bch_decode(chip->ecc.size, dat, ecc_sta);
}
-static int stm32_fmc2_read_page(struct nand_chip *chip, u8 *buf,
- int oob_required, int page)
+static int stm32_fmc2_nfc_read_page(struct nand_chip *chip, u8 *buf,
+ int oob_required, int page)
{
struct mtd_info *mtd = nand_to_mtd(chip);
int ret, i, s, stat, eccsize = chip->ecc.size;
@@ -767,21 +767,21 @@ static int stm32_fmc2_read_page(struct nand_chip *chip, u8 *buf,
}
/* Sequencer read/write configuration */
-static void stm32_fmc2_rw_page_init(struct nand_chip *chip, int page,
- int raw, bool write_data)
+static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
+ int raw, bool write_data)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct mtd_info *mtd = nand_to_mtd(chip);
u32 csqcfgr1, csqcfgr2, csqcfgr3;
u32 csqar1, csqar2;
u32 ecc_offset = mtd->writesize + FMC2_BBM_LEN;
- u32 pcr = readl_relaxed(fmc2->io_base + FMC2_PCR);
+ u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
if (write_data)
pcr |= FMC2_PCR_WEN;
else
pcr &= ~FMC2_PCR_WEN;
- writel_relaxed(pcr, fmc2->io_base + FMC2_PCR);
+ writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
/*
* - Set Program Page/Page Read command
@@ -843,7 +843,7 @@ static void stm32_fmc2_rw_page_init(struct nand_chip *chip, int page,
* - Calculate the number of address cycles to be issued
* - Set byte 5 of address cycle if needed
*/
- csqar2 = FMC2_CSQCAR2_NANDCEN(fmc2->cs_sel);
+ csqar2 = FMC2_CSQCAR2_NANDCEN(nfc->cs_sel);
if (chip->options & NAND_BUSWIDTH_16)
csqar2 |= FMC2_CSQCAR2_SAO(ecc_offset >> 1);
else
@@ -855,31 +855,32 @@ static void stm32_fmc2_rw_page_init(struct nand_chip *chip, int page,
csqcfgr1 |= FMC2_CSQCFGR1_ACYNBR(4);
}
- writel_relaxed(csqcfgr1, fmc2->io_base + FMC2_CSQCFGR1);
- writel_relaxed(csqcfgr2, fmc2->io_base + FMC2_CSQCFGR2);
- writel_relaxed(csqcfgr3, fmc2->io_base + FMC2_CSQCFGR3);
- writel_relaxed(csqar1, fmc2->io_base + FMC2_CSQAR1);
- writel_relaxed(csqar2, fmc2->io_base + FMC2_CSQAR2);
+ writel_relaxed(csqcfgr1, nfc->io_base + FMC2_CSQCFGR1);
+ writel_relaxed(csqcfgr2, nfc->io_base + FMC2_CSQCFGR2);
+ writel_relaxed(csqcfgr3, nfc->io_base + FMC2_CSQCFGR3);
+ writel_relaxed(csqar1, nfc->io_base + FMC2_CSQAR1);
+ writel_relaxed(csqar2, nfc->io_base + FMC2_CSQAR2);
}
-static void stm32_fmc2_dma_callback(void *arg)
+static void stm32_fmc2_nfc_dma_callback(void *arg)
{
complete((struct completion *)arg);
}
/* Read/write data from/to a page */
-static int stm32_fmc2_xfer(struct nand_chip *chip, const u8 *buf,
- int raw, bool write_data)
+static int stm32_fmc2_nfc_xfer(struct nand_chip *chip, const u8 *buf,
+ int raw, bool write_data)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct dma_async_tx_descriptor *desc_data, *desc_ecc;
struct scatterlist *sg;
- struct dma_chan *dma_ch = fmc2->dma_rx_ch;
+ struct dma_chan *dma_ch = nfc->dma_rx_ch;
enum dma_data_direction dma_data_dir = DMA_FROM_DEVICE;
enum dma_transfer_direction dma_transfer_dir = DMA_DEV_TO_MEM;
- u32 csqcr = readl_relaxed(fmc2->io_base + FMC2_CSQCR);
+ u32 csqcr = readl_relaxed(nfc->io_base + FMC2_CSQCR);
int eccsteps = chip->ecc.steps;
int eccsize = chip->ecc.size;
+ unsigned long timeout = msecs_to_jiffies(FMC2_TIMEOUT_MS);
const u8 *p = buf;
int s, ret;
@@ -887,20 +888,20 @@ static int stm32_fmc2_xfer(struct nand_chip *chip, const u8 *buf,
if (write_data) {
dma_data_dir = DMA_TO_DEVICE;
dma_transfer_dir = DMA_MEM_TO_DEV;
- dma_ch = fmc2->dma_tx_ch;
+ dma_ch = nfc->dma_tx_ch;
}
- for_each_sg(fmc2->dma_data_sg.sgl, sg, eccsteps, s) {
+ for_each_sg(nfc->dma_data_sg.sgl, sg, eccsteps, s) {
sg_set_buf(sg, p, eccsize);
p += eccsize;
}
- ret = dma_map_sg(fmc2->dev, fmc2->dma_data_sg.sgl,
+ ret = dma_map_sg(nfc->dev, nfc->dma_data_sg.sgl,
eccsteps, dma_data_dir);
if (ret < 0)
return ret;
- desc_data = dmaengine_prep_slave_sg(dma_ch, fmc2->dma_data_sg.sgl,
+ desc_data = dmaengine_prep_slave_sg(dma_ch, nfc->dma_data_sg.sgl,
eccsteps, dma_transfer_dir,
DMA_PREP_INTERRUPT);
if (!desc_data) {
@@ -908,10 +909,10 @@ static int stm32_fmc2_xfer(struct nand_chip *chip, const u8 *buf,
goto err_unmap_data;
}
- reinit_completion(&fmc2->dma_data_complete);
- reinit_completion(&fmc2->complete);
- desc_data->callback = stm32_fmc2_dma_callback;
- desc_data->callback_param = &fmc2->dma_data_complete;
+ reinit_completion(&nfc->dma_data_complete);
+ reinit_completion(&nfc->complete);
+ desc_data->callback = stm32_fmc2_nfc_dma_callback;
+ desc_data->callback_param = &nfc->dma_data_complete;
ret = dma_submit_error(dmaengine_submit(desc_data));
if (ret)
goto err_unmap_data;
@@ -920,19 +921,19 @@ static int stm32_fmc2_xfer(struct nand_chip *chip, const u8 *buf,
if (!write_data && !raw) {
/* Configure DMA ECC status */
- p = fmc2->ecc_buf;
- for_each_sg(fmc2->dma_ecc_sg.sgl, sg, eccsteps, s) {
- sg_set_buf(sg, p, fmc2->dma_ecc_len);
- p += fmc2->dma_ecc_len;
+ p = nfc->ecc_buf;
+ for_each_sg(nfc->dma_ecc_sg.sgl, sg, eccsteps, s) {
+ sg_set_buf(sg, p, nfc->dma_ecc_len);
+ p += nfc->dma_ecc_len;
}
- ret = dma_map_sg(fmc2->dev, fmc2->dma_ecc_sg.sgl,
+ ret = dma_map_sg(nfc->dev, nfc->dma_ecc_sg.sgl,
eccsteps, dma_data_dir);
if (ret < 0)
goto err_unmap_data;
- desc_ecc = dmaengine_prep_slave_sg(fmc2->dma_ecc_ch,
- fmc2->dma_ecc_sg.sgl,
+ desc_ecc = dmaengine_prep_slave_sg(nfc->dma_ecc_ch,
+ nfc->dma_ecc_sg.sgl,
eccsteps, dma_transfer_dir,
DMA_PREP_INTERRUPT);
if (!desc_ecc) {
@@ -940,76 +941,73 @@ static int stm32_fmc2_xfer(struct nand_chip *chip, const u8 *buf,
goto err_unmap_ecc;
}
- reinit_completion(&fmc2->dma_ecc_complete);
- desc_ecc->callback = stm32_fmc2_dma_callback;
- desc_ecc->callback_param = &fmc2->dma_ecc_complete;
+ reinit_completion(&nfc->dma_ecc_complete);
+ desc_ecc->callback = stm32_fmc2_nfc_dma_callback;
+ desc_ecc->callback_param = &nfc->dma_ecc_complete;
ret = dma_submit_error(dmaengine_submit(desc_ecc));
if (ret)
goto err_unmap_ecc;
- dma_async_issue_pending(fmc2->dma_ecc_ch);
+ dma_async_issue_pending(nfc->dma_ecc_ch);
}
- stm32_fmc2_clear_seq_irq(fmc2);
- stm32_fmc2_enable_seq_irq(fmc2);
+ stm32_fmc2_nfc_clear_seq_irq(nfc);
+ stm32_fmc2_nfc_enable_seq_irq(nfc);
/* Start the transfer */
csqcr |= FMC2_CSQCR_CSQSTART;
- writel_relaxed(csqcr, fmc2->io_base + FMC2_CSQCR);
+ writel_relaxed(csqcr, nfc->io_base + FMC2_CSQCR);
/* Wait end of sequencer transfer */
- if (!wait_for_completion_timeout(&fmc2->complete,
- msecs_to_jiffies(FMC2_TIMEOUT_MS))) {
- dev_err(fmc2->dev, "seq timeout\n");
- stm32_fmc2_disable_seq_irq(fmc2);
+ if (!wait_for_completion_timeout(&nfc->complete, timeout)) {
+ dev_err(nfc->dev, "seq timeout\n");
+ stm32_fmc2_nfc_disable_seq_irq(nfc);
dmaengine_terminate_all(dma_ch);
if (!write_data && !raw)
- dmaengine_terminate_all(fmc2->dma_ecc_ch);
+ dmaengine_terminate_all(nfc->dma_ecc_ch);
ret = -ETIMEDOUT;
goto err_unmap_ecc;
}
/* Wait DMA data transfer completion */
- if (!wait_for_completion_timeout(&fmc2->dma_data_complete,
- msecs_to_jiffies(FMC2_TIMEOUT_MS))) {
- dev_err(fmc2->dev, "data DMA timeout\n");
+ if (!wait_for_completion_timeout(&nfc->dma_data_complete, timeout)) {
+ dev_err(nfc->dev, "data DMA timeout\n");
dmaengine_terminate_all(dma_ch);
ret = -ETIMEDOUT;
}
/* Wait DMA ECC transfer completion */
if (!write_data && !raw) {
- if (!wait_for_completion_timeout(&fmc2->dma_ecc_complete,
- msecs_to_jiffies(FMC2_TIMEOUT_MS))) {
- dev_err(fmc2->dev, "ECC DMA timeout\n");
- dmaengine_terminate_all(fmc2->dma_ecc_ch);
+ if (!wait_for_completion_timeout(&nfc->dma_ecc_complete,
+ timeout)) {
+ dev_err(nfc->dev, "ECC DMA timeout\n");
+ dmaengine_terminate_all(nfc->dma_ecc_ch);
ret = -ETIMEDOUT;
}
}
err_unmap_ecc:
if (!write_data && !raw)
- dma_unmap_sg(fmc2->dev, fmc2->dma_ecc_sg.sgl,
+ dma_unmap_sg(nfc->dev, nfc->dma_ecc_sg.sgl,
eccsteps, dma_data_dir);
err_unmap_data:
- dma_unmap_sg(fmc2->dev, fmc2->dma_data_sg.sgl, eccsteps, dma_data_dir);
+ dma_unmap_sg(nfc->dev, nfc->dma_data_sg.sgl, eccsteps, dma_data_dir);
return ret;
}
-static int stm32_fmc2_sequencer_write(struct nand_chip *chip,
- const u8 *buf, int oob_required,
- int page, int raw)
+static int stm32_fmc2_nfc_seq_write(struct nand_chip *chip, const u8 *buf,
+ int oob_required, int page, int raw)
{
struct mtd_info *mtd = nand_to_mtd(chip);
int ret;
/* Configure the sequencer */
- stm32_fmc2_rw_page_init(chip, page, raw, true);
+ stm32_fmc2_nfc_rw_page_init(chip, page, raw, true);
/* Write the page */
- ret = stm32_fmc2_xfer(chip, buf, raw, true);
+ ret = stm32_fmc2_nfc_xfer(chip, buf, raw, true);
if (ret)
return ret;
@@ -1025,53 +1023,50 @@ static int stm32_fmc2_sequencer_write(struct nand_chip *chip,
return nand_prog_page_end_op(chip);
}
-static int stm32_fmc2_sequencer_write_page(struct nand_chip *chip,
- const u8 *buf,
- int oob_required,
- int page)
+static int stm32_fmc2_nfc_seq_write_page(struct nand_chip *chip, const u8 *buf,
+ int oob_required, int page)
{
int ret;
- ret = stm32_fmc2_select_chip(chip, chip->cur_cs);
+ ret = stm32_fmc2_nfc_select_chip(chip, chip->cur_cs);
if (ret)
return ret;
- return stm32_fmc2_sequencer_write(chip, buf, oob_required, page, false);
+ return stm32_fmc2_nfc_seq_write(chip, buf, oob_required, page, false);
}
-static int stm32_fmc2_sequencer_write_page_raw(struct nand_chip *chip,
- const u8 *buf,
- int oob_required,
- int page)
+static int stm32_fmc2_nfc_seq_write_page_raw(struct nand_chip *chip,
+ const u8 *buf, int oob_required,
+ int page)
{
int ret;
- ret = stm32_fmc2_select_chip(chip, chip->cur_cs);
+ ret = stm32_fmc2_nfc_select_chip(chip, chip->cur_cs);
if (ret)
return ret;
- return stm32_fmc2_sequencer_write(chip, buf, oob_required, page, true);
+ return stm32_fmc2_nfc_seq_write(chip, buf, oob_required, page, true);
}
/* Get a status indicating which sectors have errors */
-static inline u16 stm32_fmc2_get_mapping_status(struct stm32_fmc2_nfc *fmc2)
+static inline u16 stm32_fmc2_nfc_get_mapping_status(struct stm32_fmc2_nfc *nfc)
{
- u32 csqemsr = readl_relaxed(fmc2->io_base + FMC2_CSQEMSR);
+ u32 csqemsr = readl_relaxed(nfc->io_base + FMC2_CSQEMSR);
return csqemsr & FMC2_CSQEMSR_SEM;
}
-static int stm32_fmc2_sequencer_correct(struct nand_chip *chip, u8 *dat,
- u8 *read_ecc, u8 *calc_ecc)
+static int stm32_fmc2_nfc_seq_correct(struct nand_chip *chip, u8 *dat,
+ u8 *read_ecc, u8 *calc_ecc)
{
struct mtd_info *mtd = nand_to_mtd(chip);
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
int eccbytes = chip->ecc.bytes;
int eccsteps = chip->ecc.steps;
int eccstrength = chip->ecc.strength;
int i, s, eccsize = chip->ecc.size;
- u32 *ecc_sta = (u32 *)fmc2->ecc_buf;
- u16 sta_map = stm32_fmc2_get_mapping_status(fmc2);
+ u32 *ecc_sta = (u32 *)nfc->ecc_buf;
+ u16 sta_map = stm32_fmc2_nfc_get_mapping_status(nfc);
unsigned int max_bitflips = 0;
for (i = 0, s = 0; s < eccsteps; s++, i += eccbytes, dat += eccsize) {
@@ -1080,10 +1075,11 @@ static int stm32_fmc2_sequencer_correct(struct nand_chip *chip, u8 *dat,
if (eccstrength == FMC2_ECC_HAM) {
/* Ecc_sta = FMC2_HECCR */
if (sta_map & BIT(s)) {
- stm32_fmc2_ham_set_ecc(*ecc_sta, &calc_ecc[i]);
- stat = stm32_fmc2_ham_correct(chip, dat,
- &read_ecc[i],
- &calc_ecc[i]);
+ stm32_fmc2_nfc_ham_set_ecc(*ecc_sta,
+ &calc_ecc[i]);
+ stat = stm32_fmc2_nfc_ham_correct(chip, dat,
+ &read_ecc[i],
+ &calc_ecc[i]);
}
ecc_sta++;
} else {
@@ -1095,8 +1091,8 @@ static int stm32_fmc2_sequencer_correct(struct nand_chip *chip, u8 *dat,
* Ecc_sta[4] = FMC2_BCHDSR4
*/
if (sta_map & BIT(s))
- stat = stm32_fmc2_bch_decode(eccsize, dat,
- ecc_sta);
+ stat = stm32_fmc2_nfc_bch_decode(eccsize, dat,
+ ecc_sta);
ecc_sta += 5;
}
@@ -1119,29 +1115,29 @@ static int stm32_fmc2_sequencer_correct(struct nand_chip *chip, u8 *dat,
return max_bitflips;
}
-static int stm32_fmc2_sequencer_read_page(struct nand_chip *chip, u8 *buf,
- int oob_required, int page)
+static int stm32_fmc2_nfc_seq_read_page(struct nand_chip *chip, u8 *buf,
+ int oob_required, int page)
{
struct mtd_info *mtd = nand_to_mtd(chip);
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
u8 *ecc_calc = chip->ecc.calc_buf;
u8 *ecc_code = chip->ecc.code_buf;
u16 sta_map;
int ret;
- ret = stm32_fmc2_select_chip(chip, chip->cur_cs);
+ ret = stm32_fmc2_nfc_select_chip(chip, chip->cur_cs);
if (ret)
return ret;
/* Configure the sequencer */
- stm32_fmc2_rw_page_init(chip, page, 0, false);
+ stm32_fmc2_nfc_rw_page_init(chip, page, 0, false);
/* Read the page */
- ret = stm32_fmc2_xfer(chip, buf, 0, false);
+ ret = stm32_fmc2_nfc_xfer(chip, buf, 0, false);
if (ret)
return ret;
- sta_map = stm32_fmc2_get_mapping_status(fmc2);
+ sta_map = stm32_fmc2_nfc_get_mapping_status(nfc);
/* Check if errors happen */
if (likely(!sta_map)) {
@@ -1168,21 +1164,21 @@ static int stm32_fmc2_sequencer_read_page(struct nand_chip *chip, u8 *buf,
return chip->ecc.correct(chip, buf, ecc_code, ecc_calc);
}
-static int stm32_fmc2_sequencer_read_page_raw(struct nand_chip *chip, u8 *buf,
- int oob_required, int page)
+static int stm32_fmc2_nfc_seq_read_page_raw(struct nand_chip *chip, u8 *buf,
+ int oob_required, int page)
{
struct mtd_info *mtd = nand_to_mtd(chip);
int ret;
- ret = stm32_fmc2_select_chip(chip, chip->cur_cs);
+ ret = stm32_fmc2_nfc_select_chip(chip, chip->cur_cs);
if (ret)
return ret;
/* Configure the sequencer */
- stm32_fmc2_rw_page_init(chip, page, 1, false);
+ stm32_fmc2_nfc_rw_page_init(chip, page, 1, false);
/* Read the page */
- ret = stm32_fmc2_xfer(chip, buf, 1, false);
+ ret = stm32_fmc2_nfc_xfer(chip, buf, 1, false);
if (ret)
return ret;
@@ -1195,31 +1191,31 @@ static int stm32_fmc2_sequencer_read_page_raw(struct nand_chip *chip, u8 *buf,
return 0;
}
-static irqreturn_t stm32_fmc2_irq(int irq, void *dev_id)
+static irqreturn_t stm32_fmc2_nfc_irq(int irq, void *dev_id)
{
- struct stm32_fmc2_nfc *fmc2 = (struct stm32_fmc2_nfc *)dev_id;
+ struct stm32_fmc2_nfc *nfc = (struct stm32_fmc2_nfc *)dev_id;
- if (fmc2->irq_state == FMC2_IRQ_SEQ)
+ if (nfc->irq_state == FMC2_IRQ_SEQ)
/* Sequencer is used */
- stm32_fmc2_disable_seq_irq(fmc2);
- else if (fmc2->irq_state == FMC2_IRQ_BCH)
+ stm32_fmc2_nfc_disable_seq_irq(nfc);
+ else if (nfc->irq_state == FMC2_IRQ_BCH)
/* BCH is used */
- stm32_fmc2_disable_bch_irq(fmc2);
+ stm32_fmc2_nfc_disable_bch_irq(nfc);
- complete(&fmc2->complete);
+ complete(&nfc->complete);
return IRQ_HANDLED;
}
-static void stm32_fmc2_read_data(struct nand_chip *chip, void *buf,
- unsigned int len, bool force_8bit)
+static void stm32_fmc2_nfc_read_data(struct nand_chip *chip, void *buf,
+ unsigned int len, bool force_8bit)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
- void __iomem *io_addr_r = fmc2->data_base[fmc2->cs_sel];
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ void __iomem *io_addr_r = nfc->data_base[nfc->cs_sel];
if (force_8bit && chip->options & NAND_BUSWIDTH_16)
/* Reconfigure bus width to 8-bit */
- stm32_fmc2_set_buswidth_16(fmc2, false);
+ stm32_fmc2_nfc_set_buswidth_16(nfc, false);
if (!IS_ALIGNED((uintptr_t)buf, sizeof(u32))) {
if (!IS_ALIGNED((uintptr_t)buf, sizeof(u16)) && len) {
@@ -1255,18 +1251,18 @@ static void stm32_fmc2_read_data(struct nand_chip *chip, void *buf,
if (force_8bit && chip->options & NAND_BUSWIDTH_16)
/* Reconfigure bus width to 16-bit */
- stm32_fmc2_set_buswidth_16(fmc2, true);
+ stm32_fmc2_nfc_set_buswidth_16(nfc, true);
}
-static void stm32_fmc2_write_data(struct nand_chip *chip, const void *buf,
- unsigned int len, bool force_8bit)
+static void stm32_fmc2_nfc_write_data(struct nand_chip *chip, const void *buf,
+ unsigned int len, bool force_8bit)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
- void __iomem *io_addr_w = fmc2->data_base[fmc2->cs_sel];
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ void __iomem *io_addr_w = nfc->data_base[nfc->cs_sel];
if (force_8bit && chip->options & NAND_BUSWIDTH_16)
/* Reconfigure bus width to 8-bit */
- stm32_fmc2_set_buswidth_16(fmc2, false);
+ stm32_fmc2_nfc_set_buswidth_16(nfc, false);
if (!IS_ALIGNED((uintptr_t)buf, sizeof(u32))) {
if (!IS_ALIGNED((uintptr_t)buf, sizeof(u16)) && len) {
@@ -1302,44 +1298,45 @@ static void stm32_fmc2_write_data(struct nand_chip *chip, const void *buf,
if (force_8bit && chip->options & NAND_BUSWIDTH_16)
/* Reconfigure bus width to 16-bit */
- stm32_fmc2_set_buswidth_16(fmc2, true);
+ stm32_fmc2_nfc_set_buswidth_16(nfc, true);
}
-static int stm32_fmc2_waitrdy(struct nand_chip *chip, unsigned long timeout_ms)
+static int stm32_fmc2_nfc_waitrdy(struct nand_chip *chip,
+ unsigned long timeout_ms)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
const struct nand_sdr_timings *timings;
u32 isr, sr;
/* Check if there is no pending requests to the NAND flash */
- if (readl_relaxed_poll_timeout_atomic(fmc2->io_base + FMC2_SR, sr,
+ if (readl_relaxed_poll_timeout_atomic(nfc->io_base + FMC2_SR, sr,
sr & FMC2_SR_NWRF, 1,
1000 * FMC2_TIMEOUT_MS))
- dev_warn(fmc2->dev, "Waitrdy timeout\n");
+ dev_warn(nfc->dev, "Waitrdy timeout\n");
/* Wait tWB before R/B# signal is low */
timings = nand_get_sdr_timings(&chip->data_interface);
ndelay(PSEC_TO_NSEC(timings->tWB_max));
/* R/B# signal is low, clear high level flag */
- writel_relaxed(FMC2_ICR_CIHLF, fmc2->io_base + FMC2_ICR);
+ writel_relaxed(FMC2_ICR_CIHLF, nfc->io_base + FMC2_ICR);
/* Wait R/B# signal is high */
- return readl_relaxed_poll_timeout_atomic(fmc2->io_base + FMC2_ISR,
+ return readl_relaxed_poll_timeout_atomic(nfc->io_base + FMC2_ISR,
isr, isr & FMC2_ISR_IHLF,
5, 1000 * timeout_ms);
}
-static int stm32_fmc2_exec_op(struct nand_chip *chip,
- const struct nand_operation *op,
- bool check_only)
+static int stm32_fmc2_nfc_exec_op(struct nand_chip *chip,
+ const struct nand_operation *op,
+ bool check_only)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
const struct nand_op_instr *instr = NULL;
- unsigned int op_id, i;
+ unsigned int op_id, i, timeout;
int ret;
- ret = stm32_fmc2_select_chip(chip, op->cs);
+ ret = stm32_fmc2_nfc_select_chip(chip, op->cs);
if (ret)
return ret;
@@ -1352,30 +1349,30 @@ static int stm32_fmc2_exec_op(struct nand_chip *chip,
switch (instr->type) {
case NAND_OP_CMD_INSTR:
writeb_relaxed(instr->ctx.cmd.opcode,
- fmc2->cmd_base[fmc2->cs_sel]);
+ nfc->cmd_base[nfc->cs_sel]);
break;
case NAND_OP_ADDR_INSTR:
for (i = 0; i < instr->ctx.addr.naddrs; i++)
writeb_relaxed(instr->ctx.addr.addrs[i],
- fmc2->addr_base[fmc2->cs_sel]);
+ nfc->addr_base[nfc->cs_sel]);
break;
case NAND_OP_DATA_IN_INSTR:
- stm32_fmc2_read_data(chip, instr->ctx.data.buf.in,
- instr->ctx.data.len,
- instr->ctx.data.force_8bit);
+ stm32_fmc2_nfc_read_data(chip, instr->ctx.data.buf.in,
+ instr->ctx.data.len,
+ instr->ctx.data.force_8bit);
break;
case NAND_OP_DATA_OUT_INSTR:
- stm32_fmc2_write_data(chip, instr->ctx.data.buf.out,
- instr->ctx.data.len,
- instr->ctx.data.force_8bit);
+ stm32_fmc2_nfc_write_data(chip, instr->ctx.data.buf.out,
+ instr->ctx.data.len,
+ instr->ctx.data.force_8bit);
break;
case NAND_OP_WAITRDY_INSTR:
- ret = stm32_fmc2_waitrdy(chip,
- instr->ctx.waitrdy.timeout_ms);
+ timeout = instr->ctx.waitrdy.timeout_ms;
+ ret = stm32_fmc2_nfc_waitrdy(chip, timeout);
break;
}
}
@@ -1383,13 +1380,13 @@ static int stm32_fmc2_exec_op(struct nand_chip *chip,
return ret;
}
-static void stm32_fmc2_init(struct stm32_fmc2_nfc *fmc2)
+static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
{
- u32 pcr = readl_relaxed(fmc2->io_base + FMC2_PCR);
- u32 bcr1 = readl_relaxed(fmc2->io_base + FMC2_BCR1);
+ u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
+ u32 bcr1 = readl_relaxed(nfc->io_base + FMC2_BCR1);
/* Set CS used to undefined */
- fmc2->cs_sel = -1;
+ nfc->cs_sel = -1;
/* Enable wait feature and nand flash memory bank */
pcr |= FMC2_PCR_PWAITEN;
@@ -1419,19 +1416,19 @@ static void stm32_fmc2_init(struct stm32_fmc2_nfc *fmc2)
/* Enable FMC2 controller */
bcr1 |= FMC2_BCR1_FMC2EN;
- writel_relaxed(bcr1, fmc2->io_base + FMC2_BCR1);
- writel_relaxed(pcr, fmc2->io_base + FMC2_PCR);
- writel_relaxed(FMC2_PMEM_DEFAULT, fmc2->io_base + FMC2_PMEM);
- writel_relaxed(FMC2_PATT_DEFAULT, fmc2->io_base + FMC2_PATT);
+ writel_relaxed(bcr1, nfc->io_base + FMC2_BCR1);
+ writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
+ writel_relaxed(FMC2_PMEM_DEFAULT, nfc->io_base + FMC2_PMEM);
+ writel_relaxed(FMC2_PATT_DEFAULT, nfc->io_base + FMC2_PATT);
}
-static void stm32_fmc2_calc_timings(struct nand_chip *chip,
- const struct nand_sdr_timings *sdrt)
+static void stm32_fmc2_nfc_calc_timings(struct nand_chip *chip,
+ const struct nand_sdr_timings *sdrt)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct stm32_fmc2_nand *nand = to_fmc2_nand(chip);
struct stm32_fmc2_timings *tims = &nand->timings;
- unsigned long hclk = clk_get_rate(fmc2->clk);
+ unsigned long hclk = clk_get_rate(nfc->clk);
unsigned long hclkp = NSEC_PER_SEC / (hclk / 1000);
unsigned long timing, tar, tclr, thiz, twait;
unsigned long tset_mem, tset_att, thold_mem, thold_att;
@@ -1555,80 +1552,79 @@ static void stm32_fmc2_calc_timings(struct nand_chip *chip,
tims->thold_att = clamp_val(timing, 1, FMC2_PMEM_PATT_TIMING_MASK);
}
-static int stm32_fmc2_setup_interface(struct nand_chip *chip, int chipnr,
- const struct nand_data_interface *conf)
+static int stm32_fmc2_nfc_setup_interface(struct nand_chip *chip, int chipnr,
+ const struct nand_data_interface *cf)
{
const struct nand_sdr_timings *sdrt;
- sdrt = nand_get_sdr_timings(conf);
+ sdrt = nand_get_sdr_timings(cf);
if (IS_ERR(sdrt))
return PTR_ERR(sdrt);
if (chipnr == NAND_DATA_IFACE_CHECK_ONLY)
return 0;
- stm32_fmc2_calc_timings(chip, sdrt);
- stm32_fmc2_timings_init(chip);
+ stm32_fmc2_nfc_calc_timings(chip, sdrt);
+ stm32_fmc2_nfc_timings_init(chip);
return 0;
}
-static int stm32_fmc2_dma_setup(struct stm32_fmc2_nfc *fmc2)
+static int stm32_fmc2_nfc_dma_setup(struct stm32_fmc2_nfc *nfc)
{
int ret = 0;
- fmc2->dma_tx_ch = dma_request_chan(fmc2->dev, "tx");
- if (IS_ERR(fmc2->dma_tx_ch)) {
- ret = PTR_ERR(fmc2->dma_tx_ch);
+ nfc->dma_tx_ch = dma_request_chan(nfc->dev, "tx");
+ if (IS_ERR(nfc->dma_tx_ch)) {
+ ret = PTR_ERR(nfc->dma_tx_ch);
if (ret != -ENODEV)
- dev_err(fmc2->dev,
+ dev_err(nfc->dev,
"failed to request tx DMA channel: %d\n", ret);
- fmc2->dma_tx_ch = NULL;
+ nfc->dma_tx_ch = NULL;
goto err_dma;
}
- fmc2->dma_rx_ch = dma_request_chan(fmc2->dev, "rx");
- if (IS_ERR(fmc2->dma_rx_ch)) {
- ret = PTR_ERR(fmc2->dma_rx_ch);
+ nfc->dma_rx_ch = dma_request_chan(nfc->dev, "rx");
+ if (IS_ERR(nfc->dma_rx_ch)) {
+ ret = PTR_ERR(nfc->dma_rx_ch);
if (ret != -ENODEV)
- dev_err(fmc2->dev,
+ dev_err(nfc->dev,
"failed to request rx DMA channel: %d\n", ret);
- fmc2->dma_rx_ch = NULL;
+ nfc->dma_rx_ch = NULL;
goto err_dma;
}
- fmc2->dma_ecc_ch = dma_request_chan(fmc2->dev, "ecc");
- if (IS_ERR(fmc2->dma_ecc_ch)) {
- ret = PTR_ERR(fmc2->dma_ecc_ch);
+ nfc->dma_ecc_ch = dma_request_chan(nfc->dev, "ecc");
+ if (IS_ERR(nfc->dma_ecc_ch)) {
+ ret = PTR_ERR(nfc->dma_ecc_ch);
if (ret != -ENODEV)
- dev_err(fmc2->dev,
+ dev_err(nfc->dev,
"failed to request ecc DMA channel: %d\n", ret);
- fmc2->dma_ecc_ch = NULL;
+ nfc->dma_ecc_ch = NULL;
goto err_dma;
}
- ret = sg_alloc_table(&fmc2->dma_ecc_sg, FMC2_MAX_SG, GFP_KERNEL);
+ ret = sg_alloc_table(&nfc->dma_ecc_sg, FMC2_MAX_SG, GFP_KERNEL);
if (ret)
return ret;
/* Allocate a buffer to store ECC status registers */
- fmc2->ecc_buf = devm_kzalloc(fmc2->dev, FMC2_MAX_ECC_BUF_LEN,
- GFP_KERNEL);
- if (!fmc2->ecc_buf)
+ nfc->ecc_buf = devm_kzalloc(nfc->dev, FMC2_MAX_ECC_BUF_LEN, GFP_KERNEL);
+ if (!nfc->ecc_buf)
return -ENOMEM;
- ret = sg_alloc_table(&fmc2->dma_data_sg, FMC2_MAX_SG, GFP_KERNEL);
+ ret = sg_alloc_table(&nfc->dma_data_sg, FMC2_MAX_SG, GFP_KERNEL);
if (ret)
return ret;
- init_completion(&fmc2->dma_data_complete);
- init_completion(&fmc2->dma_ecc_complete);
+ init_completion(&nfc->dma_data_complete);
+ init_completion(&nfc->dma_ecc_complete);
return 0;
err_dma:
if (ret == -ENODEV) {
- dev_warn(fmc2->dev,
+ dev_warn(nfc->dev,
"DMAs not defined in the DT, polling mode is used\n");
ret = 0;
}
@@ -1636,34 +1632,34 @@ static int stm32_fmc2_dma_setup(struct stm32_fmc2_nfc *fmc2)
return ret;
}
-static void stm32_fmc2_nand_callbacks_setup(struct nand_chip *chip)
+static void stm32_fmc2_nfc_nand_callbacks_setup(struct nand_chip *chip)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
/*
* Specific callbacks to read/write a page depending on
* the mode (polling/sequencer) and the algo used (Hamming, BCH).
*/
- if (fmc2->dma_tx_ch && fmc2->dma_rx_ch && fmc2->dma_ecc_ch) {
+ if (nfc->dma_tx_ch && nfc->dma_rx_ch && nfc->dma_ecc_ch) {
/* DMA => use sequencer mode callbacks */
- chip->ecc.correct = stm32_fmc2_sequencer_correct;
- chip->ecc.write_page = stm32_fmc2_sequencer_write_page;
- chip->ecc.read_page = stm32_fmc2_sequencer_read_page;
- chip->ecc.write_page_raw = stm32_fmc2_sequencer_write_page_raw;
- chip->ecc.read_page_raw = stm32_fmc2_sequencer_read_page_raw;
+ chip->ecc.correct = stm32_fmc2_nfc_seq_correct;
+ chip->ecc.write_page = stm32_fmc2_nfc_seq_write_page;
+ chip->ecc.read_page = stm32_fmc2_nfc_seq_read_page;
+ chip->ecc.write_page_raw = stm32_fmc2_nfc_seq_write_page_raw;
+ chip->ecc.read_page_raw = stm32_fmc2_nfc_seq_read_page_raw;
} else {
/* No DMA => use polling mode callbacks */
- chip->ecc.hwctl = stm32_fmc2_hwctl;
+ chip->ecc.hwctl = stm32_fmc2_nfc_hwctl;
if (chip->ecc.strength == FMC2_ECC_HAM) {
/* Hamming is used */
- chip->ecc.calculate = stm32_fmc2_ham_calculate;
- chip->ecc.correct = stm32_fmc2_ham_correct;
+ chip->ecc.calculate = stm32_fmc2_nfc_ham_calculate;
+ chip->ecc.correct = stm32_fmc2_nfc_ham_correct;
chip->ecc.options |= NAND_ECC_GENERIC_ERASED_CHECK;
} else {
/* BCH is used */
- chip->ecc.calculate = stm32_fmc2_bch_calculate;
- chip->ecc.correct = stm32_fmc2_bch_correct;
- chip->ecc.read_page = stm32_fmc2_read_page;
+ chip->ecc.calculate = stm32_fmc2_nfc_bch_calculate;
+ chip->ecc.correct = stm32_fmc2_nfc_bch_correct;
+ chip->ecc.read_page = stm32_fmc2_nfc_read_page;
}
}
@@ -1676,8 +1672,8 @@ static void stm32_fmc2_nand_callbacks_setup(struct nand_chip *chip)
chip->ecc.bytes = chip->options & NAND_BUSWIDTH_16 ? 8 : 7;
}
-static int stm32_fmc2_nand_ooblayout_ecc(struct mtd_info *mtd, int section,
- struct mtd_oob_region *oobregion)
+static int stm32_fmc2_nfc_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
{
struct nand_chip *chip = mtd_to_nand(mtd);
struct nand_ecc_ctrl *ecc = &chip->ecc;
@@ -1691,8 +1687,8 @@ static int stm32_fmc2_nand_ooblayout_ecc(struct mtd_info *mtd, int section,
return 0;
}
-static int stm32_fmc2_nand_ooblayout_free(struct mtd_info *mtd, int section,
- struct mtd_oob_region *oobregion)
+static int stm32_fmc2_nfc_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
{
struct nand_chip *chip = mtd_to_nand(mtd);
struct nand_ecc_ctrl *ecc = &chip->ecc;
@@ -1706,12 +1702,12 @@ static int stm32_fmc2_nand_ooblayout_free(struct mtd_info *mtd, int section,
return 0;
}
-static const struct mtd_ooblayout_ops stm32_fmc2_nand_ooblayout_ops = {
- .ecc = stm32_fmc2_nand_ooblayout_ecc,
- .free = stm32_fmc2_nand_ooblayout_free,
+static const struct mtd_ooblayout_ops stm32_fmc2_nfc_ooblayout_ops = {
+ .ecc = stm32_fmc2_nfc_ooblayout_ecc,
+ .free = stm32_fmc2_nfc_ooblayout_free,
};
-static int stm32_fmc2_calc_ecc_bytes(int step_size, int strength)
+static int stm32_fmc2_nfc_calc_ecc_bytes(int step_size, int strength)
{
/* Hamming */
if (strength == FMC2_ECC_HAM)
@@ -1725,13 +1721,13 @@ static int stm32_fmc2_calc_ecc_bytes(int step_size, int strength)
return 8;
}
-NAND_ECC_CAPS_SINGLE(stm32_fmc2_ecc_caps, stm32_fmc2_calc_ecc_bytes,
+NAND_ECC_CAPS_SINGLE(stm32_fmc2_nfc_ecc_caps, stm32_fmc2_nfc_calc_ecc_bytes,
FMC2_ECC_STEP_SIZE,
FMC2_ECC_HAM, FMC2_ECC_BCH4, FMC2_ECC_BCH8);
-static int stm32_fmc2_attach_chip(struct nand_chip *chip)
+static int stm32_fmc2_nfc_attach_chip(struct nand_chip *chip)
{
- struct stm32_fmc2_nfc *fmc2 = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct mtd_info *mtd = nand_to_mtd(chip);
int ret;
@@ -1743,45 +1739,45 @@ static int stm32_fmc2_attach_chip(struct nand_chip *chip)
* ECC sector size = 512
*/
if (chip->ecc.mode != NAND_ECC_HW) {
- dev_err(fmc2->dev, "nand_ecc_mode is not well defined in the DT\n");
+ dev_err(nfc->dev, "nand_ecc_mode is not well defined in the DT\n");
return -EINVAL;
}
- ret = nand_ecc_choose_conf(chip, &stm32_fmc2_ecc_caps,
+ ret = nand_ecc_choose_conf(chip, &stm32_fmc2_nfc_ecc_caps,
mtd->oobsize - FMC2_BBM_LEN);
if (ret) {
- dev_err(fmc2->dev, "no valid ECC settings set\n");
+ dev_err(nfc->dev, "no valid ECC settings set\n");
return ret;
}
if (mtd->writesize / chip->ecc.size > FMC2_MAX_SG) {
- dev_err(fmc2->dev, "nand page size is not supported\n");
+ dev_err(nfc->dev, "nand page size is not supported\n");
return -EINVAL;
}
if (chip->bbt_options & NAND_BBT_USE_FLASH)
chip->bbt_options |= NAND_BBT_NO_OOB;
- stm32_fmc2_nand_callbacks_setup(chip);
+ stm32_fmc2_nfc_nand_callbacks_setup(chip);
- mtd_set_ooblayout(mtd, &stm32_fmc2_nand_ooblayout_ops);
+ mtd_set_ooblayout(mtd, &stm32_fmc2_nfc_ooblayout_ops);
if (chip->options & NAND_BUSWIDTH_16)
- stm32_fmc2_set_buswidth_16(fmc2, true);
+ stm32_fmc2_nfc_set_buswidth_16(nfc, true);
return 0;
}
-static const struct nand_controller_ops stm32_fmc2_nand_controller_ops = {
- .attach_chip = stm32_fmc2_attach_chip,
- .exec_op = stm32_fmc2_exec_op,
- .setup_data_interface = stm32_fmc2_setup_interface,
+static const struct nand_controller_ops stm32_fmc2_nfc_controller_ops = {
+ .attach_chip = stm32_fmc2_nfc_attach_chip,
+ .exec_op = stm32_fmc2_nfc_exec_op,
+ .setup_data_interface = stm32_fmc2_nfc_setup_interface,
};
-static int stm32_fmc2_parse_child(struct stm32_fmc2_nfc *fmc2,
- struct device_node *dn)
+static int stm32_fmc2_nfc_parse_child(struct stm32_fmc2_nfc *nfc,
+ struct device_node *dn)
{
- struct stm32_fmc2_nand *nand = &fmc2->nand;
+ struct stm32_fmc2_nand *nand = &nfc->nand;
u32 cs;
int ret, i;
@@ -1790,29 +1786,29 @@ static int stm32_fmc2_parse_child(struct stm32_fmc2_nfc *fmc2,
nand->ncs /= sizeof(u32);
if (!nand->ncs) {
- dev_err(fmc2->dev, "invalid reg property size\n");
+ dev_err(nfc->dev, "invalid reg property size\n");
return -EINVAL;
}
for (i = 0; i < nand->ncs; i++) {
ret = of_property_read_u32_index(dn, "reg", i, &cs);
if (ret) {
- dev_err(fmc2->dev, "could not retrieve reg property: %d\n",
+ dev_err(nfc->dev, "could not retrieve reg property: %d\n",
ret);
return ret;
}
if (cs > FMC2_MAX_CE) {
- dev_err(fmc2->dev, "invalid reg value: %d\n", cs);
+ dev_err(nfc->dev, "invalid reg value: %d\n", cs);
return -EINVAL;
}
- if (fmc2->cs_assigned & BIT(cs)) {
- dev_err(fmc2->dev, "cs already assigned: %d\n", cs);
+ if (nfc->cs_assigned & BIT(cs)) {
+ dev_err(nfc->dev, "cs already assigned: %d\n", cs);
return -EINVAL;
}
- fmc2->cs_assigned |= BIT(cs);
+ nfc->cs_assigned |= BIT(cs);
nand->cs_used[i] = cs;
}
@@ -1821,25 +1817,25 @@ static int stm32_fmc2_parse_child(struct stm32_fmc2_nfc *fmc2,
return 0;
}
-static int stm32_fmc2_parse_dt(struct stm32_fmc2_nfc *fmc2)
+static int stm32_fmc2_nfc_parse_dt(struct stm32_fmc2_nfc *nfc)
{
- struct device_node *dn = fmc2->dev->of_node;
+ struct device_node *dn = nfc->dev->of_node;
struct device_node *child;
int nchips = of_get_child_count(dn);
int ret = 0;
if (!nchips) {
- dev_err(fmc2->dev, "NAND chip not defined\n");
+ dev_err(nfc->dev, "NAND chip not defined\n");
return -EINVAL;
}
if (nchips > 1) {
- dev_err(fmc2->dev, "too many NAND chips defined\n");
+ dev_err(nfc->dev, "too many NAND chips defined\n");
return -EINVAL;
}
for_each_child_of_node(dn, child) {
- ret = stm32_fmc2_parse_child(fmc2, child);
+ ret = stm32_fmc2_nfc_parse_child(nfc, child);
if (ret < 0) {
of_node_put(child);
return ret;
@@ -1849,79 +1845,79 @@ static int stm32_fmc2_parse_dt(struct stm32_fmc2_nfc *fmc2)
return ret;
}
-static int stm32_fmc2_probe(struct platform_device *pdev)
+static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct reset_control *rstc;
- struct stm32_fmc2_nfc *fmc2;
+ struct stm32_fmc2_nfc *nfc;
struct stm32_fmc2_nand *nand;
struct resource *res;
struct mtd_info *mtd;
struct nand_chip *chip;
int chip_cs, mem_region, ret, irq;
- fmc2 = devm_kzalloc(dev, sizeof(*fmc2), GFP_KERNEL);
- if (!fmc2)
+ nfc = devm_kzalloc(dev, sizeof(*nfc), GFP_KERNEL);
+ if (!nfc)
return -ENOMEM;
- fmc2->dev = dev;
- nand_controller_init(&fmc2->base);
- fmc2->base.ops = &stm32_fmc2_nand_controller_ops;
+ nfc->dev = dev;
+ nand_controller_init(&nfc->base);
+ nfc->base.ops = &stm32_fmc2_nfc_controller_ops;
- ret = stm32_fmc2_parse_dt(fmc2);
+ ret = stm32_fmc2_nfc_parse_dt(nfc);
if (ret)
return ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- fmc2->io_base = devm_ioremap_resource(dev, res);
- if (IS_ERR(fmc2->io_base))
- return PTR_ERR(fmc2->io_base);
+ nfc->io_base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(nfc->io_base))
+ return PTR_ERR(nfc->io_base);
- fmc2->io_phys_addr = res->start;
+ nfc->io_phys_addr = res->start;
for (chip_cs = 0, mem_region = 1; chip_cs < FMC2_MAX_CE;
chip_cs++, mem_region += 3) {
- if (!(fmc2->cs_assigned & BIT(chip_cs)))
+ if (!(nfc->cs_assigned & BIT(chip_cs)))
continue;
res = platform_get_resource(pdev, IORESOURCE_MEM, mem_region);
- fmc2->data_base[chip_cs] = devm_ioremap_resource(dev, res);
- if (IS_ERR(fmc2->data_base[chip_cs]))
- return PTR_ERR(fmc2->data_base[chip_cs]);
+ nfc->data_base[chip_cs] = devm_ioremap_resource(dev, res);
+ if (IS_ERR(nfc->data_base[chip_cs]))
+ return PTR_ERR(nfc->data_base[chip_cs]);
- fmc2->data_phys_addr[chip_cs] = res->start;
+ nfc->data_phys_addr[chip_cs] = res->start;
res = platform_get_resource(pdev, IORESOURCE_MEM,
mem_region + 1);
- fmc2->cmd_base[chip_cs] = devm_ioremap_resource(dev, res);
- if (IS_ERR(fmc2->cmd_base[chip_cs]))
- return PTR_ERR(fmc2->cmd_base[chip_cs]);
+ nfc->cmd_base[chip_cs] = devm_ioremap_resource(dev, res);
+ if (IS_ERR(nfc->cmd_base[chip_cs]))
+ return PTR_ERR(nfc->cmd_base[chip_cs]);
res = platform_get_resource(pdev, IORESOURCE_MEM,
mem_region + 2);
- fmc2->addr_base[chip_cs] = devm_ioremap_resource(dev, res);
- if (IS_ERR(fmc2->addr_base[chip_cs]))
- return PTR_ERR(fmc2->addr_base[chip_cs]);
+ nfc->addr_base[chip_cs] = devm_ioremap_resource(dev, res);
+ if (IS_ERR(nfc->addr_base[chip_cs]))
+ return PTR_ERR(nfc->addr_base[chip_cs]);
}
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
- ret = devm_request_irq(dev, irq, stm32_fmc2_irq, 0,
- dev_name(dev), fmc2);
+ ret = devm_request_irq(dev, irq, stm32_fmc2_nfc_irq, 0,
+ dev_name(dev), nfc);
if (ret) {
dev_err(dev, "failed to request irq\n");
return ret;
}
- init_completion(&fmc2->complete);
+ init_completion(&nfc->complete);
- fmc2->clk = devm_clk_get(dev, NULL);
- if (IS_ERR(fmc2->clk))
- return PTR_ERR(fmc2->clk);
+ nfc->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(nfc->clk))
+ return PTR_ERR(nfc->clk);
- ret = clk_prepare_enable(fmc2->clk);
+ ret = clk_prepare_enable(nfc->clk);
if (ret) {
dev_err(dev, "can not enable the clock\n");
return ret;
@@ -1937,18 +1933,18 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
reset_control_deassert(rstc);
}
- ret = stm32_fmc2_dma_setup(fmc2);
+ ret = stm32_fmc2_nfc_dma_setup(nfc);
if (ret)
goto err_dma_setup;
- stm32_fmc2_init(fmc2);
+ stm32_fmc2_nfc_init(nfc);
- nand = &fmc2->nand;
+ nand = &nfc->nand;
chip = &nand->chip;
mtd = nand_to_mtd(chip);
mtd->dev.parent = dev;
- chip->controller = &fmc2->base;
+ chip->controller = &nfc->base;
chip->options |= NAND_BUSWIDTH_AUTO | NAND_NO_SUBPAGE_WRITE |
NAND_USE_BOUNCE_BUFFER;
@@ -1966,7 +1962,7 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
if (ret)
goto err_device_register;
- platform_set_drvdata(pdev, fmc2);
+ platform_set_drvdata(pdev, nfc);
return 0;
@@ -1974,73 +1970,73 @@ static int stm32_fmc2_probe(struct platform_device *pdev)
nand_cleanup(chip);
err_dma_setup:
- if (fmc2->dma_ecc_ch)
- dma_release_channel(fmc2->dma_ecc_ch);
- if (fmc2->dma_tx_ch)
- dma_release_channel(fmc2->dma_tx_ch);
- if (fmc2->dma_rx_ch)
- dma_release_channel(fmc2->dma_rx_ch);
+ if (nfc->dma_ecc_ch)
+ dma_release_channel(nfc->dma_ecc_ch);
+ if (nfc->dma_tx_ch)
+ dma_release_channel(nfc->dma_tx_ch);
+ if (nfc->dma_rx_ch)
+ dma_release_channel(nfc->dma_rx_ch);
- sg_free_table(&fmc2->dma_data_sg);
- sg_free_table(&fmc2->dma_ecc_sg);
+ sg_free_table(&nfc->dma_data_sg);
+ sg_free_table(&nfc->dma_ecc_sg);
err_clk_disable:
- clk_disable_unprepare(fmc2->clk);
+ clk_disable_unprepare(nfc->clk);
return ret;
}
-static int stm32_fmc2_remove(struct platform_device *pdev)
+static int stm32_fmc2_nfc_remove(struct platform_device *pdev)
{
- struct stm32_fmc2_nfc *fmc2 = platform_get_drvdata(pdev);
- struct stm32_fmc2_nand *nand = &fmc2->nand;
+ struct stm32_fmc2_nfc *nfc = platform_get_drvdata(pdev);
+ struct stm32_fmc2_nand *nand = &nfc->nand;
nand_release(&nand->chip);
- if (fmc2->dma_ecc_ch)
- dma_release_channel(fmc2->dma_ecc_ch);
- if (fmc2->dma_tx_ch)
- dma_release_channel(fmc2->dma_tx_ch);
- if (fmc2->dma_rx_ch)
- dma_release_channel(fmc2->dma_rx_ch);
+ if (nfc->dma_ecc_ch)
+ dma_release_channel(nfc->dma_ecc_ch);
+ if (nfc->dma_tx_ch)
+ dma_release_channel(nfc->dma_tx_ch);
+ if (nfc->dma_rx_ch)
+ dma_release_channel(nfc->dma_rx_ch);
- sg_free_table(&fmc2->dma_data_sg);
- sg_free_table(&fmc2->dma_ecc_sg);
+ sg_free_table(&nfc->dma_data_sg);
+ sg_free_table(&nfc->dma_ecc_sg);
- clk_disable_unprepare(fmc2->clk);
+ clk_disable_unprepare(nfc->clk);
return 0;
}
-static int __maybe_unused stm32_fmc2_suspend(struct device *dev)
+static int __maybe_unused stm32_fmc2_nfc_suspend(struct device *dev)
{
- struct stm32_fmc2_nfc *fmc2 = dev_get_drvdata(dev);
+ struct stm32_fmc2_nfc *nfc = dev_get_drvdata(dev);
- clk_disable_unprepare(fmc2->clk);
+ clk_disable_unprepare(nfc->clk);
pinctrl_pm_select_sleep_state(dev);
return 0;
}
-static int __maybe_unused stm32_fmc2_resume(struct device *dev)
+static int __maybe_unused stm32_fmc2_nfc_resume(struct device *dev)
{
- struct stm32_fmc2_nfc *fmc2 = dev_get_drvdata(dev);
- struct stm32_fmc2_nand *nand = &fmc2->nand;
+ struct stm32_fmc2_nfc *nfc = dev_get_drvdata(dev);
+ struct stm32_fmc2_nand *nand = &nfc->nand;
int chip_cs, ret;
pinctrl_pm_select_default_state(dev);
- ret = clk_prepare_enable(fmc2->clk);
+ ret = clk_prepare_enable(nfc->clk);
if (ret) {
dev_err(dev, "can not enable the clock\n");
return ret;
}
- stm32_fmc2_init(fmc2);
+ stm32_fmc2_nfc_init(nfc);
for (chip_cs = 0; chip_cs < FMC2_MAX_CE; chip_cs++) {
- if (!(fmc2->cs_assigned & BIT(chip_cs)))
+ if (!(nfc->cs_assigned & BIT(chip_cs)))
continue;
nand_reset(&nand->chip, chip_cs);
@@ -2049,27 +2045,27 @@ static int __maybe_unused stm32_fmc2_resume(struct device *dev)
return 0;
}
-static SIMPLE_DEV_PM_OPS(stm32_fmc2_pm_ops, stm32_fmc2_suspend,
- stm32_fmc2_resume);
+static SIMPLE_DEV_PM_OPS(stm32_fmc2_nfc_pm_ops, stm32_fmc2_nfc_suspend,
+ stm32_fmc2_nfc_resume);
-static const struct of_device_id stm32_fmc2_match[] = {
+static const struct of_device_id stm32_fmc2_nfc_match[] = {
{.compatible = "st,stm32mp15-fmc2"},
{}
};
-MODULE_DEVICE_TABLE(of, stm32_fmc2_match);
+MODULE_DEVICE_TABLE(of, stm32_fmc2_nfc_match);
-static struct platform_driver stm32_fmc2_driver = {
- .probe = stm32_fmc2_probe,
- .remove = stm32_fmc2_remove,
+static struct platform_driver stm32_fmc2_nfc_driver = {
+ .probe = stm32_fmc2_nfc_probe,
+ .remove = stm32_fmc2_nfc_remove,
.driver = {
- .name = "stm32_fmc2_nand",
- .of_match_table = stm32_fmc2_match,
- .pm = &stm32_fmc2_pm_ops,
+ .name = "stm32_fmc2_nfc",
+ .of_match_table = stm32_fmc2_nfc_match,
+ .pm = &stm32_fmc2_nfc_pm_ops,
},
};
-module_platform_driver(stm32_fmc2_driver);
+module_platform_driver(stm32_fmc2_nfc_driver);
-MODULE_ALIAS("platform:stm32_fmc2_nand");
+MODULE_ALIAS("platform:stm32_fmc2_nfc");
MODULE_AUTHOR("Christophe Kerello <christophe.kerello@st.com>");
-MODULE_DESCRIPTION("STMicroelectronics STM32 FMC2 nand driver");
+MODULE_DESCRIPTION("STMicroelectronics STM32 FMC2 nfc driver");
MODULE_LICENSE("GPL v2");
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [08/12] mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (6 preceding siblings ...)
2020-03-23 14:58 ` [07/12] mtd: rawnand: stm32_fmc2: cleanup Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-23 14:58 ` [09/12] mtd: rawnand: stm32_fmc2: move all registers Christophe Kerello
` (4 subsequent siblings)
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch removes custom macros and uses FIELD_PREP and FIELD_GET macros.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 177 ++++++++++++++++-----------------
1 file changed, 85 insertions(+), 92 deletions(-)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 9ce405d..e0a7c08 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -4,6 +4,7 @@
* Author: Christophe Kerello <christophe.kerello@st.com>
*/
+#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
@@ -84,20 +85,16 @@
/* Register: FMC2_PCR */
#define FMC2_PCR_PWAITEN BIT(1)
#define FMC2_PCR_PBKEN BIT(2)
-#define FMC2_PCR_PWID_MASK GENMASK(5, 4)
-#define FMC2_PCR_PWID(x) (((x) & 0x3) << 4)
+#define FMC2_PCR_PWID GENMASK(5, 4)
#define FMC2_PCR_PWID_BUSWIDTH_8 0
#define FMC2_PCR_PWID_BUSWIDTH_16 1
#define FMC2_PCR_ECCEN BIT(6)
#define FMC2_PCR_ECCALG BIT(8)
-#define FMC2_PCR_TCLR_MASK GENMASK(12, 9)
-#define FMC2_PCR_TCLR(x) (((x) & 0xf) << 9)
+#define FMC2_PCR_TCLR GENMASK(12, 9)
#define FMC2_PCR_TCLR_DEFAULT 0xf
-#define FMC2_PCR_TAR_MASK GENMASK(16, 13)
-#define FMC2_PCR_TAR(x) (((x) & 0xf) << 13)
+#define FMC2_PCR_TAR GENMASK(16, 13)
#define FMC2_PCR_TAR_DEFAULT 0xf
-#define FMC2_PCR_ECCSS_MASK GENMASK(19, 17)
-#define FMC2_PCR_ECCSS(x) (((x) & 0x7) << 17)
+#define FMC2_PCR_ECCSS GENMASK(19, 17)
#define FMC2_PCR_ECCSS_512 1
#define FMC2_PCR_ECCSS_2048 3
#define FMC2_PCR_BCHECC BIT(24)
@@ -107,17 +104,17 @@
#define FMC2_SR_NWRF BIT(6)
/* Register: FMC2_PMEM */
-#define FMC2_PMEM_MEMSET(x) (((x) & 0xff) << 0)
-#define FMC2_PMEM_MEMWAIT(x) (((x) & 0xff) << 8)
-#define FMC2_PMEM_MEMHOLD(x) (((x) & 0xff) << 16)
-#define FMC2_PMEM_MEMHIZ(x) (((x) & 0xff) << 24)
+#define FMC2_PMEM_MEMSET GENMASK(7, 0)
+#define FMC2_PMEM_MEMWAIT GENMASK(15, 8)
+#define FMC2_PMEM_MEMHOLD GENMASK(23, 16)
+#define FMC2_PMEM_MEMHIZ GENMASK(31, 24)
#define FMC2_PMEM_DEFAULT 0x0a0a0a0a
/* Register: FMC2_PATT */
-#define FMC2_PATT_ATTSET(x) (((x) & 0xff) << 0)
-#define FMC2_PATT_ATTWAIT(x) (((x) & 0xff) << 8)
-#define FMC2_PATT_ATTHOLD(x) (((x) & 0xff) << 16)
-#define FMC2_PATT_ATTHIZ(x) (((x) & 0xff) << 24)
+#define FMC2_PATT_ATTSET GENMASK(7, 0)
+#define FMC2_PATT_ATTWAIT GENMASK(15, 8)
+#define FMC2_PATT_ATTHOLD GENMASK(23, 16)
+#define FMC2_PATT_ATTHIZ GENMASK(31, 24)
#define FMC2_PATT_DEFAULT 0x0a0a0a0a
/* Register: FMC2_ISR */
@@ -132,9 +129,9 @@
/* Register: FMC2_CSQCFGR1 */
#define FMC2_CSQCFGR1_CMD2EN BIT(1)
#define FMC2_CSQCFGR1_DMADEN BIT(2)
-#define FMC2_CSQCFGR1_ACYNBR(x) (((x) & 0x7) << 4)
-#define FMC2_CSQCFGR1_CMD1(x) (((x) & 0xff) << 8)
-#define FMC2_CSQCFGR1_CMD2(x) (((x) & 0xff) << 16)
+#define FMC2_CSQCFGR1_ACYNBR GENMASK(6, 4)
+#define FMC2_CSQCFGR1_CMD1 GENMASK(15, 8)
+#define FMC2_CSQCFGR1_CMD2 GENMASK(23, 16)
#define FMC2_CSQCFGR1_CMD1T BIT(24)
#define FMC2_CSQCFGR1_CMD2T BIT(25)
@@ -142,13 +139,13 @@
#define FMC2_CSQCFGR2_SQSDTEN BIT(0)
#define FMC2_CSQCFGR2_RCMD2EN BIT(1)
#define FMC2_CSQCFGR2_DMASEN BIT(2)
-#define FMC2_CSQCFGR2_RCMD1(x) (((x) & 0xff) << 8)
-#define FMC2_CSQCFGR2_RCMD2(x) (((x) & 0xff) << 16)
+#define FMC2_CSQCFGR2_RCMD1 GENMASK(15, 8)
+#define FMC2_CSQCFGR2_RCMD2 GENMASK(23, 16)
#define FMC2_CSQCFGR2_RCMD1T BIT(24)
#define FMC2_CSQCFGR2_RCMD2T BIT(25)
/* Register: FMC2_CSQCFGR3 */
-#define FMC2_CSQCFGR3_SNBR(x) (((x) & 0x1f) << 8)
+#define FMC2_CSQCFGR3_SNBR GENMASK(13, 8)
#define FMC2_CSQCFGR3_AC1T BIT(16)
#define FMC2_CSQCFGR3_AC2T BIT(17)
#define FMC2_CSQCFGR3_AC3T BIT(18)
@@ -159,15 +156,15 @@
#define FMC2_CSQCFGR3_RAC2T BIT(23)
/* Register: FMC2_CSQCAR1 */
-#define FMC2_CSQCAR1_ADDC1(x) (((x) & 0xff) << 0)
-#define FMC2_CSQCAR1_ADDC2(x) (((x) & 0xff) << 8)
-#define FMC2_CSQCAR1_ADDC3(x) (((x) & 0xff) << 16)
-#define FMC2_CSQCAR1_ADDC4(x) (((x) & 0xff) << 24)
+#define FMC2_CSQCAR1_ADDC1 GENMASK(7, 0)
+#define FMC2_CSQCAR1_ADDC2 GENMASK(15, 8)
+#define FMC2_CSQCAR1_ADDC3 GENMASK(23, 16)
+#define FMC2_CSQCAR1_ADDC4 GENMASK(31, 24)
/* Register: FMC2_CSQCAR2 */
-#define FMC2_CSQCAR2_ADDC5(x) (((x) & 0xff) << 0)
-#define FMC2_CSQCAR2_NANDCEN(x) (((x) & 0x3) << 10)
-#define FMC2_CSQCAR2_SAO(x) (((x) & 0xffff) << 16)
+#define FMC2_CSQCAR2_ADDC5 GENMASK(7, 0)
+#define FMC2_CSQCAR2_NANDCEN GENMASK(11, 10)
+#define FMC2_CSQCAR2_SAO GENMASK(31, 16)
/* Register: FMC2_CSQIER */
#define FMC2_CSQIER_TCIE BIT(0)
@@ -188,28 +185,23 @@
/* Register: FMC2_BCHDSR0 */
#define FMC2_BCHDSR0_DUE BIT(0)
#define FMC2_BCHDSR0_DEF BIT(1)
-#define FMC2_BCHDSR0_DEN_MASK GENMASK(7, 4)
-#define FMC2_BCHDSR0_DEN_SHIFT 4
+#define FMC2_BCHDSR0_DEN GENMASK(7, 4)
/* Register: FMC2_BCHDSR1 */
-#define FMC2_BCHDSR1_EBP1_MASK GENMASK(12, 0)
-#define FMC2_BCHDSR1_EBP2_MASK GENMASK(28, 16)
-#define FMC2_BCHDSR1_EBP2_SHIFT 16
+#define FMC2_BCHDSR1_EBP1 GENMASK(12, 0)
+#define FMC2_BCHDSR1_EBP2 GENMASK(28, 16)
/* Register: FMC2_BCHDSR2 */
-#define FMC2_BCHDSR2_EBP3_MASK GENMASK(12, 0)
-#define FMC2_BCHDSR2_EBP4_MASK GENMASK(28, 16)
-#define FMC2_BCHDSR2_EBP4_SHIFT 16
+#define FMC2_BCHDSR2_EBP3 GENMASK(12, 0)
+#define FMC2_BCHDSR2_EBP4 GENMASK(28, 16)
/* Register: FMC2_BCHDSR3 */
-#define FMC2_BCHDSR3_EBP5_MASK GENMASK(12, 0)
-#define FMC2_BCHDSR3_EBP6_MASK GENMASK(28, 16)
-#define FMC2_BCHDSR3_EBP6_SHIFT 16
+#define FMC2_BCHDSR3_EBP5 GENMASK(12, 0)
+#define FMC2_BCHDSR3_EBP6 GENMASK(28, 16)
/* Register: FMC2_BCHDSR4 */
-#define FMC2_BCHDSR4_EBP7_MASK GENMASK(12, 0)
-#define FMC2_BCHDSR4_EBP8_MASK GENMASK(28, 16)
-#define FMC2_BCHDSR4_EBP8_SHIFT 16
+#define FMC2_BCHDSR4_EBP7 GENMASK(12, 0)
+#define FMC2_BCHDSR4_EBP8 GENMASK(28, 16)
enum stm32_fmc2_ecc {
FMC2_ECC_HAM = 1,
@@ -289,22 +281,22 @@ static void stm32_fmc2_nfc_timings_init(struct nand_chip *chip)
u32 pmem, patt;
/* Set tclr/tar timings */
- pcr &= ~FMC2_PCR_TCLR_MASK;
- pcr |= FMC2_PCR_TCLR(timings->tclr);
- pcr &= ~FMC2_PCR_TAR_MASK;
- pcr |= FMC2_PCR_TAR(timings->tar);
+ pcr &= ~FMC2_PCR_TCLR;
+ pcr |= FIELD_PREP(FMC2_PCR_TCLR, timings->tclr);
+ pcr &= ~FMC2_PCR_TAR;
+ pcr |= FIELD_PREP(FMC2_PCR_TAR, timings->tar);
/* Set tset/twait/thold/thiz timings in common bank */
- pmem = FMC2_PMEM_MEMSET(timings->tset_mem);
- pmem |= FMC2_PMEM_MEMWAIT(timings->twait);
- pmem |= FMC2_PMEM_MEMHOLD(timings->thold_mem);
- pmem |= FMC2_PMEM_MEMHIZ(timings->thiz);
+ pmem = FIELD_PREP(FMC2_PMEM_MEMSET, timings->tset_mem);
+ pmem |= FIELD_PREP(FMC2_PMEM_MEMWAIT, timings->twait);
+ pmem |= FIELD_PREP(FMC2_PMEM_MEMHOLD, timings->thold_mem);
+ pmem |= FIELD_PREP(FMC2_PMEM_MEMHIZ, timings->thiz);
/* Set tset/twait/thold/thiz timings in attribut bank */
- patt = FMC2_PATT_ATTSET(timings->tset_att);
- patt |= FMC2_PATT_ATTWAIT(timings->twait);
- patt |= FMC2_PATT_ATTHOLD(timings->thold_att);
- patt |= FMC2_PATT_ATTHIZ(timings->thiz);
+ patt = FIELD_PREP(FMC2_PATT_ATTSET, timings->tset_att);
+ patt |= FIELD_PREP(FMC2_PATT_ATTWAIT, timings->twait);
+ patt |= FIELD_PREP(FMC2_PATT_ATTHOLD, timings->thold_att);
+ patt |= FIELD_PREP(FMC2_PATT_ATTHIZ, timings->thiz);
writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
writel_relaxed(pmem, nfc->io_base + FMC2_PMEM);
@@ -327,13 +319,13 @@ static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
}
/* Set buswidth */
- pcr &= ~FMC2_PCR_PWID_MASK;
+ pcr &= ~FMC2_PCR_PWID;
if (chip->options & NAND_BUSWIDTH_16)
- pcr |= FMC2_PCR_PWID(FMC2_PCR_PWID_BUSWIDTH_16);
+ pcr |= FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16);
/* Set ECC sector size */
- pcr &= ~FMC2_PCR_ECCSS_MASK;
- pcr |= FMC2_PCR_ECCSS(FMC2_PCR_ECCSS_512);
+ pcr &= ~FMC2_PCR_ECCSS;
+ pcr |= FIELD_PREP(FMC2_PCR_ECCSS, FMC2_PCR_ECCSS_512);
writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
}
@@ -403,9 +395,9 @@ static void stm32_fmc2_nfc_set_buswidth_16(struct stm32_fmc2_nfc *nfc, bool set)
{
u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
- pcr &= ~FMC2_PCR_PWID_MASK;
+ pcr &= ~FMC2_PCR_PWID;
if (set)
- pcr |= FMC2_PCR_PWID(FMC2_PCR_PWID_BUSWIDTH_16);
+ pcr |= FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16);
writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
}
@@ -659,16 +651,16 @@ static int stm32_fmc2_nfc_bch_decode(int eccsize, u8 *dat, u32 *ecc_sta)
if (unlikely(bchdsr0 & FMC2_BCHDSR0_DUE))
return -EBADMSG;
- pos[0] = bchdsr1 & FMC2_BCHDSR1_EBP1_MASK;
- pos[1] = (bchdsr1 & FMC2_BCHDSR1_EBP2_MASK) >> FMC2_BCHDSR1_EBP2_SHIFT;
- pos[2] = bchdsr2 & FMC2_BCHDSR2_EBP3_MASK;
- pos[3] = (bchdsr2 & FMC2_BCHDSR2_EBP4_MASK) >> FMC2_BCHDSR2_EBP4_SHIFT;
- pos[4] = bchdsr3 & FMC2_BCHDSR3_EBP5_MASK;
- pos[5] = (bchdsr3 & FMC2_BCHDSR3_EBP6_MASK) >> FMC2_BCHDSR3_EBP6_SHIFT;
- pos[6] = bchdsr4 & FMC2_BCHDSR4_EBP7_MASK;
- pos[7] = (bchdsr4 & FMC2_BCHDSR4_EBP8_MASK) >> FMC2_BCHDSR4_EBP8_SHIFT;
+ pos[0] = FIELD_GET(FMC2_BCHDSR1_EBP1, bchdsr1);
+ pos[1] = FIELD_GET(FMC2_BCHDSR1_EBP2, bchdsr1);
+ pos[2] = FIELD_GET(FMC2_BCHDSR2_EBP3, bchdsr2);
+ pos[3] = FIELD_GET(FMC2_BCHDSR2_EBP4, bchdsr2);
+ pos[4] = FIELD_GET(FMC2_BCHDSR3_EBP5, bchdsr3);
+ pos[5] = FIELD_GET(FMC2_BCHDSR3_EBP6, bchdsr3);
+ pos[6] = FIELD_GET(FMC2_BCHDSR4_EBP7, bchdsr4);
+ pos[7] = FIELD_GET(FMC2_BCHDSR4_EBP8, bchdsr4);
- den = (bchdsr0 & FMC2_BCHDSR0_DEN_MASK) >> FMC2_BCHDSR0_DEN_SHIFT;
+ den = FIELD_GET(FMC2_BCHDSR0_DEN, bchdsr0);
for (i = 0; i < den; i++) {
if (pos[i] < eccsize * 8) {
change_bit(pos[i], (unsigned long *)dat);
@@ -790,11 +782,11 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
*/
csqcfgr1 = FMC2_CSQCFGR1_DMADEN | FMC2_CSQCFGR1_CMD1T;
if (write_data)
- csqcfgr1 |= FMC2_CSQCFGR1_CMD1(NAND_CMD_SEQIN);
+ csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_CMD1, NAND_CMD_SEQIN);
else
- csqcfgr1 |= FMC2_CSQCFGR1_CMD1(NAND_CMD_READ0) |
+ csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_CMD1, NAND_CMD_READ0) |
FMC2_CSQCFGR1_CMD2EN |
- FMC2_CSQCFGR1_CMD2(NAND_CMD_READSTART) |
+ FIELD_PREP(FMC2_CSQCFGR1_CMD2, NAND_CMD_READSTART) |
FMC2_CSQCFGR1_CMD2T;
/*
@@ -804,11 +796,12 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
* - Set timings
*/
if (write_data)
- csqcfgr2 = FMC2_CSQCFGR2_RCMD1(NAND_CMD_RNDIN);
+ csqcfgr2 = FIELD_PREP(FMC2_CSQCFGR2_RCMD1, NAND_CMD_RNDIN);
else
- csqcfgr2 = FMC2_CSQCFGR2_RCMD1(NAND_CMD_RNDOUT) |
+ csqcfgr2 = FIELD_PREP(FMC2_CSQCFGR2_RCMD1, NAND_CMD_RNDOUT) |
FMC2_CSQCFGR2_RCMD2EN |
- FMC2_CSQCFGR2_RCMD2(NAND_CMD_RNDOUTSTART) |
+ FIELD_PREP(FMC2_CSQCFGR2_RCMD2,
+ NAND_CMD_RNDOUTSTART) |
FMC2_CSQCFGR2_RCMD1T |
FMC2_CSQCFGR2_RCMD2T;
if (!raw) {
@@ -820,7 +813,7 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
* - Set the number of sectors to be written
* - Set timings
*/
- csqcfgr3 = FMC2_CSQCFGR3_SNBR(chip->ecc.steps - 1);
+ csqcfgr3 = FIELD_PREP(FMC2_CSQCFGR3_SNBR, chip->ecc.steps - 1);
if (write_data) {
csqcfgr3 |= FMC2_CSQCFGR3_RAC2T;
if (chip->options & NAND_ROW_ADDR_3)
@@ -834,8 +827,8 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
* Byte 1 and byte 2 => column, we start at 0x0
* Byte 3 and byte 4 => page
*/
- csqar1 = FMC2_CSQCAR1_ADDC3(page);
- csqar1 |= FMC2_CSQCAR1_ADDC4(page >> 8);
+ csqar1 = FIELD_PREP(FMC2_CSQCAR1_ADDC3, page);
+ csqar1 |= FIELD_PREP(FMC2_CSQCAR1_ADDC4, page >> 8);
/*
* - Set chip enable number
@@ -843,16 +836,16 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
* - Calculate the number of address cycles to be issued
* - Set byte 5 of address cycle if needed
*/
- csqar2 = FMC2_CSQCAR2_NANDCEN(nfc->cs_sel);
+ csqar2 = FIELD_PREP(FMC2_CSQCAR2_NANDCEN, nfc->cs_sel);
if (chip->options & NAND_BUSWIDTH_16)
- csqar2 |= FMC2_CSQCAR2_SAO(ecc_offset >> 1);
+ csqar2 |= FIELD_PREP(FMC2_CSQCAR2_SAO, ecc_offset >> 1);
else
- csqar2 |= FMC2_CSQCAR2_SAO(ecc_offset);
+ csqar2 |= FIELD_PREP(FMC2_CSQCAR2_SAO, ecc_offset);
if (chip->options & NAND_ROW_ADDR_3) {
- csqcfgr1 |= FMC2_CSQCFGR1_ACYNBR(5);
- csqar2 |= FMC2_CSQCAR2_ADDC5(page >> 16);
+ csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_ACYNBR, 5);
+ csqar2 |= FIELD_PREP(FMC2_CSQCAR2_ADDC5, page >> 16);
} else {
- csqcfgr1 |= FMC2_CSQCFGR1_ACYNBR(4);
+ csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_ACYNBR, 4);
}
writel_relaxed(csqcfgr1, nfc->io_base + FMC2_CSQCFGR1);
@@ -1393,7 +1386,7 @@ static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
pcr |= FMC2_PCR_PBKEN;
/* Set buswidth to 8 bits mode for identification */
- pcr &= ~FMC2_PCR_PWID_MASK;
+ pcr &= ~FMC2_PCR_PWID;
/* ECC logic is disabled */
pcr &= ~FMC2_PCR_ECCEN;
@@ -1404,14 +1397,14 @@ static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
pcr &= ~FMC2_PCR_WEN;
/* Set default ECC sector size */
- pcr &= ~FMC2_PCR_ECCSS_MASK;
- pcr |= FMC2_PCR_ECCSS(FMC2_PCR_ECCSS_2048);
+ pcr &= ~FMC2_PCR_ECCSS;
+ pcr |= FIELD_PREP(FMC2_PCR_ECCSS, FMC2_PCR_ECCSS_2048);
/* Set default tclr/tar timings */
- pcr &= ~FMC2_PCR_TCLR_MASK;
- pcr |= FMC2_PCR_TCLR(FMC2_PCR_TCLR_DEFAULT);
- pcr &= ~FMC2_PCR_TAR_MASK;
- pcr |= FMC2_PCR_TAR(FMC2_PCR_TAR_DEFAULT);
+ pcr &= ~FMC2_PCR_TCLR;
+ pcr |= FIELD_PREP(FMC2_PCR_TCLR, FMC2_PCR_TCLR_DEFAULT);
+ pcr &= ~FMC2_PCR_TAR;
+ pcr |= FIELD_PREP(FMC2_PCR_TAR, FMC2_PCR_TAR_DEFAULT);
/* Enable FMC2 controller */
bcr1 |= FMC2_BCR1_FMC2EN;
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [09/12] mtd: rawnand: stm32_fmc2: move all registers
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (7 preceding siblings ...)
2020-03-23 14:58 ` [08/12] mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-23 14:58 ` [10/12] mtd: rawnand: stm32_fmc2: use regmap APIs Christophe Kerello
` (3 subsequent siblings)
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch moves all constants/structures based on regmap used
to stm32-fmc2.h
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 156 +--------------------------------
1 file changed, 1 insertion(+), 155 deletions(-)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index e0a7c08..8a3a45b 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -4,13 +4,12 @@
* Author: Christophe Kerello <christophe.kerello@st.com>
*/
-#include <linux/bitfield.h>
-#include <linux/clk.h>
#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/iopoll.h>
+#include <linux/mfd/stm32-fmc2.h>
#include <linux/module.h>
#include <linux/mtd/rawnand.h>
#include <linux/pinctrl/consumer.h>
@@ -47,162 +46,9 @@
#define FMC2_PCR_TIMING_MASK 0xf
#define FMC2_PMEM_PATT_TIMING_MASK 0xff
-/* FMC2 Controller Registers */
-#define FMC2_BCR1 0x0
-#define FMC2_PCR 0x80
-#define FMC2_SR 0x84
-#define FMC2_PMEM 0x88
-#define FMC2_PATT 0x8c
-#define FMC2_HECCR 0x94
-#define FMC2_ISR 0x184
-#define FMC2_ICR 0x188
-#define FMC2_CSQCR 0x200
-#define FMC2_CSQCFGR1 0x204
-#define FMC2_CSQCFGR2 0x208
-#define FMC2_CSQCFGR3 0x20c
-#define FMC2_CSQAR1 0x210
-#define FMC2_CSQAR2 0x214
-#define FMC2_CSQIER 0x220
-#define FMC2_CSQISR 0x224
-#define FMC2_CSQICR 0x228
-#define FMC2_CSQEMSR 0x230
-#define FMC2_BCHIER 0x250
-#define FMC2_BCHISR 0x254
-#define FMC2_BCHICR 0x258
-#define FMC2_BCHPBR1 0x260
-#define FMC2_BCHPBR2 0x264
-#define FMC2_BCHPBR3 0x268
-#define FMC2_BCHPBR4 0x26c
-#define FMC2_BCHDSR0 0x27c
-#define FMC2_BCHDSR1 0x280
-#define FMC2_BCHDSR2 0x284
-#define FMC2_BCHDSR3 0x288
-#define FMC2_BCHDSR4 0x28c
-
-/* Register: FMC2_BCR1 */
-#define FMC2_BCR1_FMC2EN BIT(31)
-
-/* Register: FMC2_PCR */
-#define FMC2_PCR_PWAITEN BIT(1)
-#define FMC2_PCR_PBKEN BIT(2)
-#define FMC2_PCR_PWID GENMASK(5, 4)
-#define FMC2_PCR_PWID_BUSWIDTH_8 0
-#define FMC2_PCR_PWID_BUSWIDTH_16 1
-#define FMC2_PCR_ECCEN BIT(6)
-#define FMC2_PCR_ECCALG BIT(8)
-#define FMC2_PCR_TCLR GENMASK(12, 9)
-#define FMC2_PCR_TCLR_DEFAULT 0xf
-#define FMC2_PCR_TAR GENMASK(16, 13)
-#define FMC2_PCR_TAR_DEFAULT 0xf
-#define FMC2_PCR_ECCSS GENMASK(19, 17)
-#define FMC2_PCR_ECCSS_512 1
-#define FMC2_PCR_ECCSS_2048 3
-#define FMC2_PCR_BCHECC BIT(24)
-#define FMC2_PCR_WEN BIT(25)
-
-/* Register: FMC2_SR */
-#define FMC2_SR_NWRF BIT(6)
-
-/* Register: FMC2_PMEM */
-#define FMC2_PMEM_MEMSET GENMASK(7, 0)
-#define FMC2_PMEM_MEMWAIT GENMASK(15, 8)
-#define FMC2_PMEM_MEMHOLD GENMASK(23, 16)
-#define FMC2_PMEM_MEMHIZ GENMASK(31, 24)
#define FMC2_PMEM_DEFAULT 0x0a0a0a0a
-
-/* Register: FMC2_PATT */
-#define FMC2_PATT_ATTSET GENMASK(7, 0)
-#define FMC2_PATT_ATTWAIT GENMASK(15, 8)
-#define FMC2_PATT_ATTHOLD GENMASK(23, 16)
-#define FMC2_PATT_ATTHIZ GENMASK(31, 24)
#define FMC2_PATT_DEFAULT 0x0a0a0a0a
-/* Register: FMC2_ISR */
-#define FMC2_ISR_IHLF BIT(1)
-
-/* Register: FMC2_ICR */
-#define FMC2_ICR_CIHLF BIT(1)
-
-/* Register: FMC2_CSQCR */
-#define FMC2_CSQCR_CSQSTART BIT(0)
-
-/* Register: FMC2_CSQCFGR1 */
-#define FMC2_CSQCFGR1_CMD2EN BIT(1)
-#define FMC2_CSQCFGR1_DMADEN BIT(2)
-#define FMC2_CSQCFGR1_ACYNBR GENMASK(6, 4)
-#define FMC2_CSQCFGR1_CMD1 GENMASK(15, 8)
-#define FMC2_CSQCFGR1_CMD2 GENMASK(23, 16)
-#define FMC2_CSQCFGR1_CMD1T BIT(24)
-#define FMC2_CSQCFGR1_CMD2T BIT(25)
-
-/* Register: FMC2_CSQCFGR2 */
-#define FMC2_CSQCFGR2_SQSDTEN BIT(0)
-#define FMC2_CSQCFGR2_RCMD2EN BIT(1)
-#define FMC2_CSQCFGR2_DMASEN BIT(2)
-#define FMC2_CSQCFGR2_RCMD1 GENMASK(15, 8)
-#define FMC2_CSQCFGR2_RCMD2 GENMASK(23, 16)
-#define FMC2_CSQCFGR2_RCMD1T BIT(24)
-#define FMC2_CSQCFGR2_RCMD2T BIT(25)
-
-/* Register: FMC2_CSQCFGR3 */
-#define FMC2_CSQCFGR3_SNBR GENMASK(13, 8)
-#define FMC2_CSQCFGR3_AC1T BIT(16)
-#define FMC2_CSQCFGR3_AC2T BIT(17)
-#define FMC2_CSQCFGR3_AC3T BIT(18)
-#define FMC2_CSQCFGR3_AC4T BIT(19)
-#define FMC2_CSQCFGR3_AC5T BIT(20)
-#define FMC2_CSQCFGR3_SDT BIT(21)
-#define FMC2_CSQCFGR3_RAC1T BIT(22)
-#define FMC2_CSQCFGR3_RAC2T BIT(23)
-
-/* Register: FMC2_CSQCAR1 */
-#define FMC2_CSQCAR1_ADDC1 GENMASK(7, 0)
-#define FMC2_CSQCAR1_ADDC2 GENMASK(15, 8)
-#define FMC2_CSQCAR1_ADDC3 GENMASK(23, 16)
-#define FMC2_CSQCAR1_ADDC4 GENMASK(31, 24)
-
-/* Register: FMC2_CSQCAR2 */
-#define FMC2_CSQCAR2_ADDC5 GENMASK(7, 0)
-#define FMC2_CSQCAR2_NANDCEN GENMASK(11, 10)
-#define FMC2_CSQCAR2_SAO GENMASK(31, 16)
-
-/* Register: FMC2_CSQIER */
-#define FMC2_CSQIER_TCIE BIT(0)
-
-/* Register: FMC2_CSQICR */
-#define FMC2_CSQICR_CLEAR_IRQ GENMASK(4, 0)
-
-/* Register: FMC2_CSQEMSR */
-#define FMC2_CSQEMSR_SEM GENMASK(15, 0)
-
-/* Register: FMC2_BCHIER */
-#define FMC2_BCHIER_DERIE BIT(1)
-#define FMC2_BCHIER_EPBRIE BIT(4)
-
-/* Register: FMC2_BCHICR */
-#define FMC2_BCHICR_CLEAR_IRQ GENMASK(4, 0)
-
-/* Register: FMC2_BCHDSR0 */
-#define FMC2_BCHDSR0_DUE BIT(0)
-#define FMC2_BCHDSR0_DEF BIT(1)
-#define FMC2_BCHDSR0_DEN GENMASK(7, 4)
-
-/* Register: FMC2_BCHDSR1 */
-#define FMC2_BCHDSR1_EBP1 GENMASK(12, 0)
-#define FMC2_BCHDSR1_EBP2 GENMASK(28, 16)
-
-/* Register: FMC2_BCHDSR2 */
-#define FMC2_BCHDSR2_EBP3 GENMASK(12, 0)
-#define FMC2_BCHDSR2_EBP4 GENMASK(28, 16)
-
-/* Register: FMC2_BCHDSR3 */
-#define FMC2_BCHDSR3_EBP5 GENMASK(12, 0)
-#define FMC2_BCHDSR3_EBP6 GENMASK(28, 16)
-
-/* Register: FMC2_BCHDSR4 */
-#define FMC2_BCHDSR4_EBP7 GENMASK(12, 0)
-#define FMC2_BCHDSR4_EBP8 GENMASK(28, 16)
-
enum stm32_fmc2_ecc {
FMC2_ECC_HAM = 1,
FMC2_ECC_BCH4 = 4,
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [10/12] mtd: rawnand: stm32_fmc2: use regmap APIs
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (8 preceding siblings ...)
2020-03-23 14:58 ` [09/12] mtd: rawnand: stm32_fmc2: move all registers Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-24 0:44 ` Marek Vasut
2020-03-23 14:58 ` [11/12] mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller Christophe Kerello
` (2 subsequent siblings)
12 siblings, 1 reply; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch uses regmap APIs to access all FMC2 registers.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/Kconfig | 2 +
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 215 ++++++++++++++++-----------------
2 files changed, 103 insertions(+), 114 deletions(-)
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index a80a46b..12b715a 100644
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -419,6 +419,8 @@ config MTD_NAND_TEGRA
config MTD_NAND_STM32_FMC2
tristate "Support for NAND controller on STM32MP SoCs"
depends on MACH_STM32MP157 || COMPILE_TEST
+ select REGMAP
+ select REGMAP_MMIO
help
Enables support for NAND Flash chips on SoCs containing the FMC2
NAND controller. This controller is found on STM32MP SoCs.
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 8a3a45b..bc16614 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -49,6 +49,16 @@
#define FMC2_PMEM_DEFAULT 0x0a0a0a0a
#define FMC2_PATT_DEFAULT 0x0a0a0a0a
+/* Regmap registers configuration */
+#define FMC2_MAX_REGISTER 0x3fc
+
+static const struct regmap_config stm32_fmc2_regmap_cfg = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = sizeof(u32),
+ .max_register = FMC2_MAX_REGISTER,
+};
+
enum stm32_fmc2_ecc {
FMC2_ECC_HAM = 1,
FMC2_ECC_BCH4 = 4,
@@ -88,7 +98,7 @@ struct stm32_fmc2_nfc {
struct nand_controller base;
struct stm32_fmc2_nand nand;
struct device *dev;
- void __iomem *io_base;
+ struct regmap *regmap;
void __iomem *data_base[FMC2_MAX_CE];
void __iomem *cmd_base[FMC2_MAX_CE];
void __iomem *addr_base[FMC2_MAX_CE];
@@ -123,40 +133,37 @@ static void stm32_fmc2_nfc_timings_init(struct nand_chip *chip)
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct stm32_fmc2_nand *nand = to_fmc2_nand(chip);
struct stm32_fmc2_timings *timings = &nand->timings;
- u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
u32 pmem, patt;
/* Set tclr/tar timings */
- pcr &= ~FMC2_PCR_TCLR;
- pcr |= FIELD_PREP(FMC2_PCR_TCLR, timings->tclr);
- pcr &= ~FMC2_PCR_TAR;
- pcr |= FIELD_PREP(FMC2_PCR_TAR, timings->tar);
+ regmap_update_bits(nfc->regmap, FMC2_PCR,
+ FMC2_PCR_TCLR | FMC2_PCR_TAR,
+ FIELD_PREP(FMC2_PCR_TCLR, timings->tclr) |
+ FIELD_PREP(FMC2_PCR_TAR, timings->tar));
/* Set tset/twait/thold/thiz timings in common bank */
pmem = FIELD_PREP(FMC2_PMEM_MEMSET, timings->tset_mem);
pmem |= FIELD_PREP(FMC2_PMEM_MEMWAIT, timings->twait);
pmem |= FIELD_PREP(FMC2_PMEM_MEMHOLD, timings->thold_mem);
pmem |= FIELD_PREP(FMC2_PMEM_MEMHIZ, timings->thiz);
+ regmap_write(nfc->regmap, FMC2_PMEM, pmem);
/* Set tset/twait/thold/thiz timings in attribut bank */
patt = FIELD_PREP(FMC2_PATT_ATTSET, timings->tset_att);
patt |= FIELD_PREP(FMC2_PATT_ATTWAIT, timings->twait);
patt |= FIELD_PREP(FMC2_PATT_ATTHOLD, timings->thold_att);
patt |= FIELD_PREP(FMC2_PATT_ATTHIZ, timings->thiz);
-
- writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
- writel_relaxed(pmem, nfc->io_base + FMC2_PMEM);
- writel_relaxed(patt, nfc->io_base + FMC2_PATT);
+ regmap_write(nfc->regmap, FMC2_PATT, patt);
}
static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
- u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
+ u32 pcr = 0, pcr_mask;
/* Configure ECC algorithm (default configuration is Hamming) */
- pcr &= ~FMC2_PCR_ECCALG;
- pcr &= ~FMC2_PCR_BCHECC;
+ pcr_mask = FMC2_PCR_ECCALG;
+ pcr_mask |= FMC2_PCR_BCHECC;
if (chip->ecc.strength == FMC2_ECC_BCH8) {
pcr |= FMC2_PCR_ECCALG;
pcr |= FMC2_PCR_BCHECC;
@@ -165,15 +172,15 @@ static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
}
/* Set buswidth */
- pcr &= ~FMC2_PCR_PWID;
+ pcr_mask |= FMC2_PCR_PWID;
if (chip->options & NAND_BUSWIDTH_16)
pcr |= FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16);
/* Set ECC sector size */
- pcr &= ~FMC2_PCR_ECCSS;
+ pcr_mask |= FMC2_PCR_ECCSS;
pcr |= FIELD_PREP(FMC2_PCR_ECCSS, FMC2_PCR_ECCSS_512);
- writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
+ regmap_update_bits(nfc->regmap, FMC2_PCR, pcr_mask, pcr);
}
static int stm32_fmc2_nfc_select_chip(struct nand_chip *chip, int chipnr)
@@ -239,81 +246,63 @@ static int stm32_fmc2_nfc_select_chip(struct nand_chip *chip, int chipnr)
static void stm32_fmc2_nfc_set_buswidth_16(struct stm32_fmc2_nfc *nfc, bool set)
{
- u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
+ u32 pcr;
- pcr &= ~FMC2_PCR_PWID;
- if (set)
- pcr |= FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16);
- writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
+ pcr = set ? FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16) :
+ FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_8);
+
+ regmap_update_bits(nfc->regmap, FMC2_PCR, FMC2_PCR_PWID, pcr);
}
static void stm32_fmc2_nfc_set_ecc(struct stm32_fmc2_nfc *nfc, bool enable)
{
- u32 pcr = readl(nfc->io_base + FMC2_PCR);
-
- pcr &= ~FMC2_PCR_ECCEN;
- if (enable)
- pcr |= FMC2_PCR_ECCEN;
- writel(pcr, nfc->io_base + FMC2_PCR);
+ regmap_update_bits(nfc->regmap, FMC2_PCR, FMC2_PCR_ECCEN,
+ enable ? FMC2_PCR_ECCEN : 0);
}
-static inline void stm32_fmc2_nfc_enable_seq_irq(struct stm32_fmc2_nfc *nfc)
+static void stm32_fmc2_nfc_enable_seq_irq(struct stm32_fmc2_nfc *nfc)
{
- u32 csqier = readl_relaxed(nfc->io_base + FMC2_CSQIER);
-
- csqier |= FMC2_CSQIER_TCIE;
-
nfc->irq_state = FMC2_IRQ_SEQ;
- writel_relaxed(csqier, nfc->io_base + FMC2_CSQIER);
+ regmap_update_bits(nfc->regmap, FMC2_CSQIER,
+ FMC2_CSQIER_TCIE, FMC2_CSQIER_TCIE);
}
-static inline void stm32_fmc2_nfc_disable_seq_irq(struct stm32_fmc2_nfc *nfc)
+static void stm32_fmc2_nfc_disable_seq_irq(struct stm32_fmc2_nfc *nfc)
{
- u32 csqier = readl_relaxed(nfc->io_base + FMC2_CSQIER);
-
- csqier &= ~FMC2_CSQIER_TCIE;
-
- writel_relaxed(csqier, nfc->io_base + FMC2_CSQIER);
+ regmap_update_bits(nfc->regmap, FMC2_CSQIER, FMC2_CSQIER_TCIE, 0);
nfc->irq_state = FMC2_IRQ_UNKNOWN;
}
-static inline void stm32_fmc2_nfc_clear_seq_irq(struct stm32_fmc2_nfc *nfc)
+static void stm32_fmc2_nfc_clear_seq_irq(struct stm32_fmc2_nfc *nfc)
{
- writel_relaxed(FMC2_CSQICR_CLEAR_IRQ, nfc->io_base + FMC2_CSQICR);
+ regmap_write(nfc->regmap, FMC2_CSQICR, FMC2_CSQICR_CLEAR_IRQ);
}
-static inline void stm32_fmc2_nfc_enable_bch_irq(struct stm32_fmc2_nfc *nfc,
- int mode)
+static void stm32_fmc2_nfc_enable_bch_irq(struct stm32_fmc2_nfc *nfc, int mode)
{
- u32 bchier = readl_relaxed(nfc->io_base + FMC2_BCHIER);
+ nfc->irq_state = FMC2_IRQ_BCH;
if (mode == NAND_ECC_WRITE)
- bchier |= FMC2_BCHIER_EPBRIE;
+ regmap_update_bits(nfc->regmap, FMC2_BCHIER,
+ FMC2_BCHIER_EPBRIE, FMC2_BCHIER_EPBRIE);
else
- bchier |= FMC2_BCHIER_DERIE;
-
- nfc->irq_state = FMC2_IRQ_BCH;
-
- writel_relaxed(bchier, nfc->io_base + FMC2_BCHIER);
+ regmap_update_bits(nfc->regmap, FMC2_BCHIER,
+ FMC2_BCHIER_DERIE, FMC2_BCHIER_DERIE);
}
-static inline void stm32_fmc2_nfc_disable_bch_irq(struct stm32_fmc2_nfc *nfc)
+static void stm32_fmc2_nfc_disable_bch_irq(struct stm32_fmc2_nfc *nfc)
{
- u32 bchier = readl_relaxed(nfc->io_base + FMC2_BCHIER);
-
- bchier &= ~FMC2_BCHIER_DERIE;
- bchier &= ~FMC2_BCHIER_EPBRIE;
-
- writel_relaxed(bchier, nfc->io_base + FMC2_BCHIER);
+ regmap_update_bits(nfc->regmap, FMC2_BCHIER,
+ FMC2_BCHIER_DERIE | FMC2_BCHIER_EPBRIE, 0);
nfc->irq_state = FMC2_IRQ_UNKNOWN;
}
-static inline void stm32_fmc2_nfc_clear_bch_irq(struct stm32_fmc2_nfc *nfc)
+static void stm32_fmc2_nfc_clear_bch_irq(struct stm32_fmc2_nfc *nfc)
{
- writel_relaxed(FMC2_BCHICR_CLEAR_IRQ, nfc->io_base + FMC2_BCHICR);
+ regmap_write(nfc->regmap, FMC2_BCHICR, FMC2_BCHICR_CLEAR_IRQ);
}
/*
@@ -327,13 +316,8 @@ static void stm32_fmc2_nfc_hwctl(struct nand_chip *chip, int mode)
stm32_fmc2_nfc_set_ecc(nfc, false);
if (chip->ecc.strength != FMC2_ECC_HAM) {
- u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
-
- if (mode == NAND_ECC_WRITE)
- pcr |= FMC2_PCR_WEN;
- else
- pcr &= ~FMC2_PCR_WEN;
- writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
+ regmap_update_bits(nfc->regmap, FMC2_PCR, FMC2_PCR_WEN,
+ mode == NAND_ECC_WRITE ? FMC2_PCR_WEN : 0);
reinit_completion(&nfc->complete);
stm32_fmc2_nfc_clear_bch_irq(nfc);
@@ -348,7 +332,7 @@ static void stm32_fmc2_nfc_hwctl(struct nand_chip *chip, int mode)
* ECC is 3 bytes for 512 bytes of data (supports error correction up to
* max of 1-bit)
*/
-static inline void stm32_fmc2_nfc_ham_set_ecc(const u32 ecc_sta, u8 *ecc)
+static void stm32_fmc2_nfc_ham_set_ecc(const u32 ecc_sta, u8 *ecc)
{
ecc[0] = ecc_sta;
ecc[1] = ecc_sta >> 8;
@@ -362,15 +346,15 @@ static int stm32_fmc2_nfc_ham_calculate(struct nand_chip *chip, const u8 *data,
u32 sr, heccr;
int ret;
- ret = readl_relaxed_poll_timeout_atomic(nfc->io_base + FMC2_SR,
- sr, sr & FMC2_SR_NWRF, 1,
- 1000 * FMC2_TIMEOUT_MS);
+ ret = regmap_read_poll_timeout(nfc->regmap, FMC2_SR, sr,
+ sr & FMC2_SR_NWRF, 1,
+ 1000 * FMC2_TIMEOUT_MS);
if (ret) {
dev_err(nfc->dev, "ham timeout\n");
return ret;
}
- heccr = readl_relaxed(nfc->io_base + FMC2_HECCR);
+ regmap_read(nfc->regmap, FMC2_HECCR, &heccr);
stm32_fmc2_nfc_ham_set_ecc(heccr, ecc);
stm32_fmc2_nfc_set_ecc(nfc, false);
@@ -449,13 +433,13 @@ static int stm32_fmc2_nfc_bch_calculate(struct nand_chip *chip, const u8 *data,
}
/* Read parity bits */
- bchpbr = readl_relaxed(nfc->io_base + FMC2_BCHPBR1);
+ regmap_read(nfc->regmap, FMC2_BCHPBR1, &bchpbr);
ecc[0] = bchpbr;
ecc[1] = bchpbr >> 8;
ecc[2] = bchpbr >> 16;
ecc[3] = bchpbr >> 24;
- bchpbr = readl_relaxed(nfc->io_base + FMC2_BCHPBR2);
+ regmap_read(nfc->regmap, FMC2_BCHPBR2, &bchpbr);
ecc[4] = bchpbr;
ecc[5] = bchpbr >> 8;
ecc[6] = bchpbr >> 16;
@@ -463,13 +447,13 @@ static int stm32_fmc2_nfc_bch_calculate(struct nand_chip *chip, const u8 *data,
if (chip->ecc.strength == FMC2_ECC_BCH8) {
ecc[7] = bchpbr >> 24;
- bchpbr = readl_relaxed(nfc->io_base + FMC2_BCHPBR3);
+ regmap_read(nfc->regmap, FMC2_BCHPBR3, &bchpbr);
ecc[8] = bchpbr;
ecc[9] = bchpbr >> 8;
ecc[10] = bchpbr >> 16;
ecc[11] = bchpbr >> 24;
- bchpbr = readl_relaxed(nfc->io_base + FMC2_BCHPBR4);
+ regmap_read(nfc->regmap, FMC2_BCHPBR4, &bchpbr);
ecc[12] = bchpbr;
}
@@ -531,11 +515,11 @@ static int stm32_fmc2_nfc_bch_correct(struct nand_chip *chip, u8 *dat,
return -ETIMEDOUT;
}
- ecc_sta[0] = readl_relaxed(nfc->io_base + FMC2_BCHDSR0);
- ecc_sta[1] = readl_relaxed(nfc->io_base + FMC2_BCHDSR1);
- ecc_sta[2] = readl_relaxed(nfc->io_base + FMC2_BCHDSR2);
- ecc_sta[3] = readl_relaxed(nfc->io_base + FMC2_BCHDSR3);
- ecc_sta[4] = readl_relaxed(nfc->io_base + FMC2_BCHDSR4);
+ regmap_read(nfc->regmap, FMC2_BCHDSR0, &ecc_sta[0]);
+ regmap_read(nfc->regmap, FMC2_BCHDSR1, &ecc_sta[1]);
+ regmap_read(nfc->regmap, FMC2_BCHDSR2, &ecc_sta[2]);
+ regmap_read(nfc->regmap, FMC2_BCHDSR3, &ecc_sta[3]);
+ regmap_read(nfc->regmap, FMC2_BCHDSR4, &ecc_sta[4]);
stm32_fmc2_nfc_set_ecc(nfc, false);
@@ -613,13 +597,9 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
u32 csqcfgr1, csqcfgr2, csqcfgr3;
u32 csqar1, csqar2;
u32 ecc_offset = mtd->writesize + FMC2_BBM_LEN;
- u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
- if (write_data)
- pcr |= FMC2_PCR_WEN;
- else
- pcr &= ~FMC2_PCR_WEN;
- writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
+ regmap_update_bits(nfc->regmap, FMC2_PCR, FMC2_PCR_WEN,
+ write_data ? FMC2_PCR_WEN : 0);
/*
* - Set Program Page/Page Read command
@@ -694,11 +674,11 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_ACYNBR, 4);
}
- writel_relaxed(csqcfgr1, nfc->io_base + FMC2_CSQCFGR1);
- writel_relaxed(csqcfgr2, nfc->io_base + FMC2_CSQCFGR2);
- writel_relaxed(csqcfgr3, nfc->io_base + FMC2_CSQCFGR3);
- writel_relaxed(csqar1, nfc->io_base + FMC2_CSQAR1);
- writel_relaxed(csqar2, nfc->io_base + FMC2_CSQAR2);
+ regmap_write(nfc->regmap, FMC2_CSQCFGR1, csqcfgr1);
+ regmap_write(nfc->regmap, FMC2_CSQCFGR2, csqcfgr2);
+ regmap_write(nfc->regmap, FMC2_CSQCFGR3, csqcfgr3);
+ regmap_write(nfc->regmap, FMC2_CSQAR1, csqar1);
+ regmap_write(nfc->regmap, FMC2_CSQAR2, csqar2);
}
static void stm32_fmc2_nfc_dma_callback(void *arg)
@@ -716,7 +696,6 @@ static int stm32_fmc2_nfc_xfer(struct nand_chip *chip, const u8 *buf,
struct dma_chan *dma_ch = nfc->dma_rx_ch;
enum dma_data_direction dma_data_dir = DMA_FROM_DEVICE;
enum dma_transfer_direction dma_transfer_dir = DMA_DEV_TO_MEM;
- u32 csqcr = readl_relaxed(nfc->io_base + FMC2_CSQCR);
int eccsteps = chip->ecc.steps;
int eccsize = chip->ecc.size;
unsigned long timeout = msecs_to_jiffies(FMC2_TIMEOUT_MS);
@@ -794,8 +773,8 @@ static int stm32_fmc2_nfc_xfer(struct nand_chip *chip, const u8 *buf,
stm32_fmc2_nfc_enable_seq_irq(nfc);
/* Start the transfer */
- csqcr |= FMC2_CSQCR_CSQSTART;
- writel_relaxed(csqcr, nfc->io_base + FMC2_CSQCR);
+ regmap_update_bits(nfc->regmap, FMC2_CSQCR,
+ FMC2_CSQCR_CSQSTART, FMC2_CSQCR_CSQSTART);
/* Wait end of sequencer transfer */
if (!wait_for_completion_timeout(&nfc->complete, timeout)) {
@@ -888,11 +867,13 @@ static int stm32_fmc2_nfc_seq_write_page_raw(struct nand_chip *chip,
}
/* Get a status indicating which sectors have errors */
-static inline u16 stm32_fmc2_nfc_get_mapping_status(struct stm32_fmc2_nfc *nfc)
+static u16 stm32_fmc2_nfc_get_mapping_status(struct stm32_fmc2_nfc *nfc)
{
- u32 csqemsr = readl_relaxed(nfc->io_base + FMC2_CSQEMSR);
+ u32 csqemsr;
- return csqemsr & FMC2_CSQEMSR_SEM;
+ regmap_read(nfc->regmap, FMC2_CSQEMSR, &csqemsr);
+
+ return FIELD_GET(FMC2_CSQEMSR_SEM, csqemsr);
}
static int stm32_fmc2_nfc_seq_correct(struct nand_chip *chip, u8 *dat,
@@ -1148,9 +1129,9 @@ static int stm32_fmc2_nfc_waitrdy(struct nand_chip *chip,
u32 isr, sr;
/* Check if there is no pending requests to the NAND flash */
- if (readl_relaxed_poll_timeout_atomic(nfc->io_base + FMC2_SR, sr,
- sr & FMC2_SR_NWRF, 1,
- 1000 * FMC2_TIMEOUT_MS))
+ if (regmap_read_poll_timeout(nfc->regmap, FMC2_SR, sr,
+ sr & FMC2_SR_NWRF, 1,
+ 1000 * FMC2_TIMEOUT_MS))
dev_warn(nfc->dev, "Waitrdy timeout\n");
/* Wait tWB before R/B# signal is low */
@@ -1158,12 +1139,12 @@ static int stm32_fmc2_nfc_waitrdy(struct nand_chip *chip,
ndelay(PSEC_TO_NSEC(timings->tWB_max));
/* R/B# signal is low, clear high level flag */
- writel_relaxed(FMC2_ICR_CIHLF, nfc->io_base + FMC2_ICR);
+ regmap_write(nfc->regmap, FMC2_ICR, FMC2_ICR_CIHLF);
/* Wait R/B# signal is high */
- return readl_relaxed_poll_timeout_atomic(nfc->io_base + FMC2_ISR,
- isr, isr & FMC2_ISR_IHLF,
- 5, 1000 * timeout_ms);
+ return regmap_read_poll_timeout(nfc->regmap, FMC2_ISR, isr,
+ isr & FMC2_ISR_IHLF, 5,
+ 1000 * FMC2_TIMEOUT_MS);
}
static int stm32_fmc2_nfc_exec_op(struct nand_chip *chip,
@@ -1221,8 +1202,9 @@ static int stm32_fmc2_nfc_exec_op(struct nand_chip *chip,
static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
{
- u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);
- u32 bcr1 = readl_relaxed(nfc->io_base + FMC2_BCR1);
+ u32 pcr;
+
+ regmap_read(nfc->regmap, FMC2_PCR, &pcr);
/* Set CS used to undefined */
nfc->cs_sel = -1;
@@ -1253,12 +1235,12 @@ static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
pcr |= FIELD_PREP(FMC2_PCR_TAR, FMC2_PCR_TAR_DEFAULT);
/* Enable FMC2 controller */
- bcr1 |= FMC2_BCR1_FMC2EN;
+ regmap_update_bits(nfc->regmap, FMC2_BCR1,
+ FMC2_BCR1_FMC2EN, FMC2_BCR1_FMC2EN);
- writel_relaxed(bcr1, nfc->io_base + FMC2_BCR1);
- writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
- writel_relaxed(FMC2_PMEM_DEFAULT, nfc->io_base + FMC2_PMEM);
- writel_relaxed(FMC2_PATT_DEFAULT, nfc->io_base + FMC2_PATT);
+ regmap_write(nfc->regmap, FMC2_PCR, pcr);
+ regmap_write(nfc->regmap, FMC2_PMEM, FMC2_PMEM_DEFAULT);
+ regmap_write(nfc->regmap, FMC2_PATT, FMC2_PATT_DEFAULT);
}
static void stm32_fmc2_nfc_calc_timings(struct nand_chip *chip,
@@ -1693,6 +1675,7 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
struct resource *res;
struct mtd_info *mtd;
struct nand_chip *chip;
+ void __iomem *mmio;
int chip_cs, mem_region, ret, irq;
nfc = devm_kzalloc(dev, sizeof(*nfc), GFP_KERNEL);
@@ -1708,9 +1691,13 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
return ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- nfc->io_base = devm_ioremap_resource(dev, res);
- if (IS_ERR(nfc->io_base))
- return PTR_ERR(nfc->io_base);
+ mmio = devm_ioremap_resource(dev, res);
+ if (IS_ERR(mmio))
+ return PTR_ERR(mmio);
+
+ nfc->regmap = devm_regmap_init_mmio(dev, mmio, &stm32_fmc2_regmap_cfg);
+ if (IS_ERR(nfc->regmap))
+ return PTR_ERR(nfc->regmap);
nfc->io_phys_addr = res->start;
--
1.9.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [11/12] mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (9 preceding siblings ...)
2020-03-23 14:58 ` [10/12] mtd: rawnand: stm32_fmc2: use regmap APIs Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-23 14:58 ` [12/12] mtd: rawnand: stm32_fmc2: add new MP1 compatible string Christophe Kerello
2020-03-24 0:37 ` [00/12] add STM32 FMC2 controller drivers Marek Vasut
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch moves common used resources (registers base, clocks, ...)
in stm32_fmc2 structure.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/Kconfig | 1 +
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 218 ++++++++++++++++++++++-----------
2 files changed, 150 insertions(+), 69 deletions(-)
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index 12b715a..ad7d887 100644
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -421,6 +421,7 @@ config MTD_NAND_STM32_FMC2
depends on MACH_STM32MP157 || COMPILE_TEST
select REGMAP
select REGMAP_MMIO
+ select MFD_STM32_FMC2
help
Enables support for NAND Flash chips on SoCs containing the FMC2
NAND controller. This controller is found on STM32MP SoCs.
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index bc16614..1dc568f 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -97,14 +97,12 @@ static inline struct stm32_fmc2_nand *to_fmc2_nand(struct nand_chip *chip)
struct stm32_fmc2_nfc {
struct nand_controller base;
struct stm32_fmc2_nand nand;
+ struct stm32_fmc2 *fmc2;
struct device *dev;
- struct regmap *regmap;
void __iomem *data_base[FMC2_MAX_CE];
void __iomem *cmd_base[FMC2_MAX_CE];
void __iomem *addr_base[FMC2_MAX_CE];
- phys_addr_t io_phys_addr;
phys_addr_t data_phys_addr[FMC2_MAX_CE];
- struct clk *clk;
u8 irq_state;
struct dma_chan *dma_tx_ch;
@@ -133,10 +131,11 @@ static void stm32_fmc2_nfc_timings_init(struct nand_chip *chip)
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct stm32_fmc2_nand *nand = to_fmc2_nand(chip);
struct stm32_fmc2_timings *timings = &nand->timings;
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
u32 pmem, patt;
/* Set tclr/tar timings */
- regmap_update_bits(nfc->regmap, FMC2_PCR,
+ regmap_update_bits(fmc2->regmap, FMC2_PCR,
FMC2_PCR_TCLR | FMC2_PCR_TAR,
FIELD_PREP(FMC2_PCR_TCLR, timings->tclr) |
FIELD_PREP(FMC2_PCR_TAR, timings->tar));
@@ -146,19 +145,20 @@ static void stm32_fmc2_nfc_timings_init(struct nand_chip *chip)
pmem |= FIELD_PREP(FMC2_PMEM_MEMWAIT, timings->twait);
pmem |= FIELD_PREP(FMC2_PMEM_MEMHOLD, timings->thold_mem);
pmem |= FIELD_PREP(FMC2_PMEM_MEMHIZ, timings->thiz);
- regmap_write(nfc->regmap, FMC2_PMEM, pmem);
+ regmap_write(fmc2->regmap, FMC2_PMEM, pmem);
/* Set tset/twait/thold/thiz timings in attribut bank */
patt = FIELD_PREP(FMC2_PATT_ATTSET, timings->tset_att);
patt |= FIELD_PREP(FMC2_PATT_ATTWAIT, timings->twait);
patt |= FIELD_PREP(FMC2_PATT_ATTHOLD, timings->thold_att);
patt |= FIELD_PREP(FMC2_PATT_ATTHIZ, timings->thiz);
- regmap_write(nfc->regmap, FMC2_PATT, patt);
+ regmap_write(fmc2->regmap, FMC2_PATT, patt);
}
static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
u32 pcr = 0, pcr_mask;
/* Configure ECC algorithm (default configuration is Hamming) */
@@ -180,13 +180,14 @@ static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
pcr_mask |= FMC2_PCR_ECCSS;
pcr |= FIELD_PREP(FMC2_PCR_ECCSS, FMC2_PCR_ECCSS_512);
- regmap_update_bits(nfc->regmap, FMC2_PCR, pcr_mask, pcr);
+ regmap_update_bits(fmc2->regmap, FMC2_PCR, pcr_mask, pcr);
}
static int stm32_fmc2_nfc_select_chip(struct nand_chip *chip, int chipnr)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct stm32_fmc2_nand *nand = to_fmc2_nand(chip);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
struct dma_slave_config dma_cfg;
int ret;
@@ -225,7 +226,7 @@ static int stm32_fmc2_nfc_select_chip(struct nand_chip *chip, int chipnr)
* BCH4/BCH8: we read BCHDSRSx registers
*/
memset(&dma_cfg, 0, sizeof(dma_cfg));
- dma_cfg.src_addr = nfc->io_phys_addr;
+ dma_cfg.src_addr = fmc2->reg_phys_addr;
dma_cfg.src_addr += chip->ecc.strength == FMC2_ECC_HAM ?
FMC2_HECCR : FMC2_BCHDSR0;
dma_cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
@@ -246,55 +247,68 @@ static int stm32_fmc2_nfc_select_chip(struct nand_chip *chip, int chipnr)
static void stm32_fmc2_nfc_set_buswidth_16(struct stm32_fmc2_nfc *nfc, bool set)
{
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
u32 pcr;
pcr = set ? FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16) :
FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_8);
- regmap_update_bits(nfc->regmap, FMC2_PCR, FMC2_PCR_PWID, pcr);
+ regmap_update_bits(fmc2->regmap, FMC2_PCR, FMC2_PCR_PWID, pcr);
}
static void stm32_fmc2_nfc_set_ecc(struct stm32_fmc2_nfc *nfc, bool enable)
{
- regmap_update_bits(nfc->regmap, FMC2_PCR, FMC2_PCR_ECCEN,
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+
+ regmap_update_bits(fmc2->regmap, FMC2_PCR, FMC2_PCR_ECCEN,
enable ? FMC2_PCR_ECCEN : 0);
}
static void stm32_fmc2_nfc_enable_seq_irq(struct stm32_fmc2_nfc *nfc)
{
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+
nfc->irq_state = FMC2_IRQ_SEQ;
- regmap_update_bits(nfc->regmap, FMC2_CSQIER,
+ regmap_update_bits(fmc2->regmap, FMC2_CSQIER,
FMC2_CSQIER_TCIE, FMC2_CSQIER_TCIE);
}
static void stm32_fmc2_nfc_disable_seq_irq(struct stm32_fmc2_nfc *nfc)
{
- regmap_update_bits(nfc->regmap, FMC2_CSQIER, FMC2_CSQIER_TCIE, 0);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+
+ regmap_update_bits(fmc2->regmap, FMC2_CSQIER, FMC2_CSQIER_TCIE, 0);
nfc->irq_state = FMC2_IRQ_UNKNOWN;
}
static void stm32_fmc2_nfc_clear_seq_irq(struct stm32_fmc2_nfc *nfc)
{
- regmap_write(nfc->regmap, FMC2_CSQICR, FMC2_CSQICR_CLEAR_IRQ);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+
+ regmap_write(fmc2->regmap, FMC2_CSQICR, FMC2_CSQICR_CLEAR_IRQ);
}
static void stm32_fmc2_nfc_enable_bch_irq(struct stm32_fmc2_nfc *nfc, int mode)
{
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+
nfc->irq_state = FMC2_IRQ_BCH;
if (mode == NAND_ECC_WRITE)
- regmap_update_bits(nfc->regmap, FMC2_BCHIER,
+ regmap_update_bits(fmc2->regmap, FMC2_BCHIER,
FMC2_BCHIER_EPBRIE, FMC2_BCHIER_EPBRIE);
else
- regmap_update_bits(nfc->regmap, FMC2_BCHIER,
+ regmap_update_bits(fmc2->regmap, FMC2_BCHIER,
FMC2_BCHIER_DERIE, FMC2_BCHIER_DERIE);
}
static void stm32_fmc2_nfc_disable_bch_irq(struct stm32_fmc2_nfc *nfc)
{
- regmap_update_bits(nfc->regmap, FMC2_BCHIER,
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+
+ regmap_update_bits(fmc2->regmap, FMC2_BCHIER,
FMC2_BCHIER_DERIE | FMC2_BCHIER_EPBRIE, 0);
nfc->irq_state = FMC2_IRQ_UNKNOWN;
@@ -302,7 +316,9 @@ static void stm32_fmc2_nfc_disable_bch_irq(struct stm32_fmc2_nfc *nfc)
static void stm32_fmc2_nfc_clear_bch_irq(struct stm32_fmc2_nfc *nfc)
{
- regmap_write(nfc->regmap, FMC2_BCHICR, FMC2_BCHICR_CLEAR_IRQ);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+
+ regmap_write(fmc2->regmap, FMC2_BCHICR, FMC2_BCHICR_CLEAR_IRQ);
}
/*
@@ -312,11 +328,12 @@ static void stm32_fmc2_nfc_clear_bch_irq(struct stm32_fmc2_nfc *nfc)
static void stm32_fmc2_nfc_hwctl(struct nand_chip *chip, int mode)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
stm32_fmc2_nfc_set_ecc(nfc, false);
if (chip->ecc.strength != FMC2_ECC_HAM) {
- regmap_update_bits(nfc->regmap, FMC2_PCR, FMC2_PCR_WEN,
+ regmap_update_bits(fmc2->regmap, FMC2_PCR, FMC2_PCR_WEN,
mode == NAND_ECC_WRITE ? FMC2_PCR_WEN : 0);
reinit_completion(&nfc->complete);
@@ -343,10 +360,11 @@ static int stm32_fmc2_nfc_ham_calculate(struct nand_chip *chip, const u8 *data,
u8 *ecc)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
u32 sr, heccr;
int ret;
- ret = regmap_read_poll_timeout(nfc->regmap, FMC2_SR, sr,
+ ret = regmap_read_poll_timeout(fmc2->regmap, FMC2_SR, sr,
sr & FMC2_SR_NWRF, 1,
1000 * FMC2_TIMEOUT_MS);
if (ret) {
@@ -354,7 +372,7 @@ static int stm32_fmc2_nfc_ham_calculate(struct nand_chip *chip, const u8 *data,
return ret;
}
- regmap_read(nfc->regmap, FMC2_HECCR, &heccr);
+ regmap_read(fmc2->regmap, FMC2_HECCR, &heccr);
stm32_fmc2_nfc_ham_set_ecc(heccr, ecc);
stm32_fmc2_nfc_set_ecc(nfc, false);
@@ -422,6 +440,7 @@ static int stm32_fmc2_nfc_bch_calculate(struct nand_chip *chip, const u8 *data,
u8 *ecc)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
u32 bchpbr;
/* Wait until the BCH code is ready */
@@ -433,13 +452,13 @@ static int stm32_fmc2_nfc_bch_calculate(struct nand_chip *chip, const u8 *data,
}
/* Read parity bits */
- regmap_read(nfc->regmap, FMC2_BCHPBR1, &bchpbr);
+ regmap_read(fmc2->regmap, FMC2_BCHPBR1, &bchpbr);
ecc[0] = bchpbr;
ecc[1] = bchpbr >> 8;
ecc[2] = bchpbr >> 16;
ecc[3] = bchpbr >> 24;
- regmap_read(nfc->regmap, FMC2_BCHPBR2, &bchpbr);
+ regmap_read(fmc2->regmap, FMC2_BCHPBR2, &bchpbr);
ecc[4] = bchpbr;
ecc[5] = bchpbr >> 8;
ecc[6] = bchpbr >> 16;
@@ -447,13 +466,13 @@ static int stm32_fmc2_nfc_bch_calculate(struct nand_chip *chip, const u8 *data,
if (chip->ecc.strength == FMC2_ECC_BCH8) {
ecc[7] = bchpbr >> 24;
- regmap_read(nfc->regmap, FMC2_BCHPBR3, &bchpbr);
+ regmap_read(fmc2->regmap, FMC2_BCHPBR3, &bchpbr);
ecc[8] = bchpbr;
ecc[9] = bchpbr >> 8;
ecc[10] = bchpbr >> 16;
ecc[11] = bchpbr >> 24;
- regmap_read(nfc->regmap, FMC2_BCHPBR4, &bchpbr);
+ regmap_read(fmc2->regmap, FMC2_BCHPBR4, &bchpbr);
ecc[12] = bchpbr;
}
@@ -505,6 +524,7 @@ static int stm32_fmc2_nfc_bch_correct(struct nand_chip *chip, u8 *dat,
u8 *read_ecc, u8 *calc_ecc)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
u32 ecc_sta[5];
/* Wait until the decoding error is ready */
@@ -515,11 +535,11 @@ static int stm32_fmc2_nfc_bch_correct(struct nand_chip *chip, u8 *dat,
return -ETIMEDOUT;
}
- regmap_read(nfc->regmap, FMC2_BCHDSR0, &ecc_sta[0]);
- regmap_read(nfc->regmap, FMC2_BCHDSR1, &ecc_sta[1]);
- regmap_read(nfc->regmap, FMC2_BCHDSR2, &ecc_sta[2]);
- regmap_read(nfc->regmap, FMC2_BCHDSR3, &ecc_sta[3]);
- regmap_read(nfc->regmap, FMC2_BCHDSR4, &ecc_sta[4]);
+ regmap_read(fmc2->regmap, FMC2_BCHDSR0, &ecc_sta[0]);
+ regmap_read(fmc2->regmap, FMC2_BCHDSR1, &ecc_sta[1]);
+ regmap_read(fmc2->regmap, FMC2_BCHDSR2, &ecc_sta[2]);
+ regmap_read(fmc2->regmap, FMC2_BCHDSR3, &ecc_sta[3]);
+ regmap_read(fmc2->regmap, FMC2_BCHDSR4, &ecc_sta[4]);
stm32_fmc2_nfc_set_ecc(nfc, false);
@@ -593,12 +613,13 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
int raw, bool write_data)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
struct mtd_info *mtd = nand_to_mtd(chip);
u32 csqcfgr1, csqcfgr2, csqcfgr3;
u32 csqar1, csqar2;
u32 ecc_offset = mtd->writesize + FMC2_BBM_LEN;
- regmap_update_bits(nfc->regmap, FMC2_PCR, FMC2_PCR_WEN,
+ regmap_update_bits(fmc2->regmap, FMC2_PCR, FMC2_PCR_WEN,
write_data ? FMC2_PCR_WEN : 0);
/*
@@ -674,11 +695,11 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_ACYNBR, 4);
}
- regmap_write(nfc->regmap, FMC2_CSQCFGR1, csqcfgr1);
- regmap_write(nfc->regmap, FMC2_CSQCFGR2, csqcfgr2);
- regmap_write(nfc->regmap, FMC2_CSQCFGR3, csqcfgr3);
- regmap_write(nfc->regmap, FMC2_CSQAR1, csqar1);
- regmap_write(nfc->regmap, FMC2_CSQAR2, csqar2);
+ regmap_write(fmc2->regmap, FMC2_CSQCFGR1, csqcfgr1);
+ regmap_write(fmc2->regmap, FMC2_CSQCFGR2, csqcfgr2);
+ regmap_write(fmc2->regmap, FMC2_CSQCFGR3, csqcfgr3);
+ regmap_write(fmc2->regmap, FMC2_CSQAR1, csqar1);
+ regmap_write(fmc2->regmap, FMC2_CSQAR2, csqar2);
}
static void stm32_fmc2_nfc_dma_callback(void *arg)
@@ -691,6 +712,7 @@ static int stm32_fmc2_nfc_xfer(struct nand_chip *chip, const u8 *buf,
int raw, bool write_data)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
struct dma_async_tx_descriptor *desc_data, *desc_ecc;
struct scatterlist *sg;
struct dma_chan *dma_ch = nfc->dma_rx_ch;
@@ -773,7 +795,7 @@ static int stm32_fmc2_nfc_xfer(struct nand_chip *chip, const u8 *buf,
stm32_fmc2_nfc_enable_seq_irq(nfc);
/* Start the transfer */
- regmap_update_bits(nfc->regmap, FMC2_CSQCR,
+ regmap_update_bits(fmc2->regmap, FMC2_CSQCR,
FMC2_CSQCR_CSQSTART, FMC2_CSQCR_CSQSTART);
/* Wait end of sequencer transfer */
@@ -869,9 +891,10 @@ static int stm32_fmc2_nfc_seq_write_page_raw(struct nand_chip *chip,
/* Get a status indicating which sectors have errors */
static u16 stm32_fmc2_nfc_get_mapping_status(struct stm32_fmc2_nfc *nfc)
{
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
u32 csqemsr;
- regmap_read(nfc->regmap, FMC2_CSQEMSR, &csqemsr);
+ regmap_read(fmc2->regmap, FMC2_CSQEMSR, &csqemsr);
return FIELD_GET(FMC2_CSQEMSR_SEM, csqemsr);
}
@@ -1125,11 +1148,12 @@ static int stm32_fmc2_nfc_waitrdy(struct nand_chip *chip,
unsigned long timeout_ms)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
const struct nand_sdr_timings *timings;
u32 isr, sr;
/* Check if there is no pending requests to the NAND flash */
- if (regmap_read_poll_timeout(nfc->regmap, FMC2_SR, sr,
+ if (regmap_read_poll_timeout(fmc2->regmap, FMC2_SR, sr,
sr & FMC2_SR_NWRF, 1,
1000 * FMC2_TIMEOUT_MS))
dev_warn(nfc->dev, "Waitrdy timeout\n");
@@ -1139,10 +1163,10 @@ static int stm32_fmc2_nfc_waitrdy(struct nand_chip *chip,
ndelay(PSEC_TO_NSEC(timings->tWB_max));
/* R/B# signal is low, clear high level flag */
- regmap_write(nfc->regmap, FMC2_ICR, FMC2_ICR_CIHLF);
+ regmap_write(fmc2->regmap, FMC2_ICR, FMC2_ICR_CIHLF);
/* Wait R/B# signal is high */
- return regmap_read_poll_timeout(nfc->regmap, FMC2_ISR, isr,
+ return regmap_read_poll_timeout(fmc2->regmap, FMC2_ISR, isr,
isr & FMC2_ISR_IHLF, 5,
1000 * FMC2_TIMEOUT_MS);
}
@@ -1202,9 +1226,10 @@ static int stm32_fmc2_nfc_exec_op(struct nand_chip *chip,
static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
{
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
u32 pcr;
- regmap_read(nfc->regmap, FMC2_PCR, &pcr);
+ regmap_read(fmc2->regmap, FMC2_PCR, &pcr);
/* Set CS used to undefined */
nfc->cs_sel = -1;
@@ -1234,13 +1259,9 @@ static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
pcr &= ~FMC2_PCR_TAR;
pcr |= FIELD_PREP(FMC2_PCR_TAR, FMC2_PCR_TAR_DEFAULT);
- /* Enable FMC2 controller */
- regmap_update_bits(nfc->regmap, FMC2_BCR1,
- FMC2_BCR1_FMC2EN, FMC2_BCR1_FMC2EN);
-
- regmap_write(nfc->regmap, FMC2_PCR, pcr);
- regmap_write(nfc->regmap, FMC2_PMEM, FMC2_PMEM_DEFAULT);
- regmap_write(nfc->regmap, FMC2_PATT, FMC2_PATT_DEFAULT);
+ regmap_write(fmc2->regmap, FMC2_PCR, pcr);
+ regmap_write(fmc2->regmap, FMC2_PMEM, FMC2_PMEM_DEFAULT);
+ regmap_write(fmc2->regmap, FMC2_PATT, FMC2_PATT_DEFAULT);
}
static void stm32_fmc2_nfc_calc_timings(struct nand_chip *chip,
@@ -1249,7 +1270,8 @@ static void stm32_fmc2_nfc_calc_timings(struct nand_chip *chip,
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct stm32_fmc2_nand *nand = to_fmc2_nand(chip);
struct stm32_fmc2_timings *tims = &nand->timings;
- unsigned long hclk = clk_get_rate(nfc->clk);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+ unsigned long hclk = clk_get_rate(fmc2->clk);
unsigned long hclkp = NSEC_PER_SEC / (hclk / 1000);
unsigned long timing, tar, tclr, thiz, twait;
unsigned long tset_mem, tset_att, thold_mem, thold_att;
@@ -1666,17 +1688,57 @@ static int stm32_fmc2_nfc_parse_dt(struct stm32_fmc2_nfc *nfc)
return ret;
}
+static void stm32_fmc2_nfc_enable(struct stm32_fmc2 *fmc2)
+{
+ regmap_update_bits(fmc2->regmap, FMC2_BCR1,
+ FMC2_BCR1_FMC2EN, FMC2_BCR1_FMC2EN);
+}
+
+static void stm32_fmc2_nfc_disable(struct stm32_fmc2 *fmc2)
+{
+ regmap_update_bits(fmc2->regmap, FMC2_BCR1, FMC2_BCR1_FMC2EN, 0);
+}
+
+static int stm32_fmc2_nfc_set_mmio_clk(struct platform_device *pdev,
+ struct stm32_fmc2 *fmc2)
+{
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ void __iomem *mmio;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ mmio = devm_ioremap_resource(dev, res);
+ if (IS_ERR(mmio))
+ return PTR_ERR(mmio);
+
+ fmc2->regmap = devm_regmap_init_mmio(dev, mmio, &stm32_fmc2_regmap_cfg);
+ if (IS_ERR(fmc2->regmap))
+ return PTR_ERR(fmc2->regmap);
+
+ fmc2->reg_phys_addr = res->start;
+
+ fmc2->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(fmc2->clk))
+ return PTR_ERR(fmc2->clk);
+
+ fmc2->enable = stm32_fmc2_nfc_enable;
+ fmc2->disable = stm32_fmc2_nfc_disable;
+
+ return 0;
+}
+
static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct reset_control *rstc;
+ struct stm32_fmc2 *fmc2;
struct stm32_fmc2_nfc *nfc;
struct stm32_fmc2_nand *nand;
struct resource *res;
struct mtd_info *mtd;
struct nand_chip *chip;
- void __iomem *mmio;
int chip_cs, mem_region, ret, irq;
+ int num_region = 0;
nfc = devm_kzalloc(dev, sizeof(*nfc), GFP_KERNEL);
if (!nfc)
@@ -1690,18 +1752,27 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
if (ret)
return ret;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- mmio = devm_ioremap_resource(dev, res);
- if (IS_ERR(mmio))
- return PTR_ERR(mmio);
+ fmc2 = dev_get_drvdata(dev->parent);
+ if (!fmc2) {
+ num_region = 1;
- nfc->regmap = devm_regmap_init_mmio(dev, mmio, &stm32_fmc2_regmap_cfg);
- if (IS_ERR(nfc->regmap))
- return PTR_ERR(nfc->regmap);
+ fmc2 = devm_kzalloc(dev, sizeof(*fmc2), GFP_KERNEL);
+ if (!fmc2)
+ return -ENOMEM;
- nfc->io_phys_addr = res->start;
+ ret = stm32_fmc2_nfc_set_mmio_clk(pdev, fmc2);
+ if (ret)
+ return ret;
+ }
+ nfc->fmc2 = fmc2;
- for (chip_cs = 0, mem_region = 1; chip_cs < FMC2_MAX_CE;
+ if (atomic_inc_return(&fmc2->nwait_is_used) > 1) {
+ dev_err(dev, "NWAIT signal in used by a FMC controller\n");
+ atomic_dec(&fmc2->nwait_is_used);
+ return -EINVAL;
+ }
+
+ for (chip_cs = 0, mem_region = num_region; chip_cs < FMC2_MAX_CE;
chip_cs++, mem_region += 3) {
if (!(nfc->cs_assigned & BIT(chip_cs)))
continue;
@@ -1739,11 +1810,7 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
init_completion(&nfc->complete);
- nfc->clk = devm_clk_get(dev, NULL);
- if (IS_ERR(nfc->clk))
- return PTR_ERR(nfc->clk);
-
- ret = clk_prepare_enable(nfc->clk);
+ ret = clk_prepare_enable(fmc2->clk);
if (ret) {
dev_err(dev, "can not enable the clock\n");
return ret;
@@ -1763,6 +1830,7 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
if (ret)
goto err_dma_setup;
+ fmc2->enable(fmc2);
stm32_fmc2_nfc_init(nfc);
nand = &nfc->nand;
@@ -1782,7 +1850,7 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
/* Scan to find existence of the device */
ret = nand_scan(chip, nand->ncs);
if (ret)
- goto err_dma_setup;
+ goto err_nand_scan;
ret = mtd_device_register(mtd, NULL, 0);
if (ret)
@@ -1795,6 +1863,10 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
err_device_register:
nand_cleanup(chip);
+err_nand_scan:
+ regmap_update_bits(fmc2->regmap, FMC2_PCR, FMC2_PCR_PBKEN, 0);
+ fmc2->disable(fmc2);
+
err_dma_setup:
if (nfc->dma_ecc_ch)
dma_release_channel(nfc->dma_ecc_ch);
@@ -1807,7 +1879,7 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
sg_free_table(&nfc->dma_ecc_sg);
err_clk_disable:
- clk_disable_unprepare(nfc->clk);
+ clk_disable_unprepare(fmc2->clk);
return ret;
}
@@ -1816,7 +1888,11 @@ static int stm32_fmc2_nfc_remove(struct platform_device *pdev)
{
struct stm32_fmc2_nfc *nfc = platform_get_drvdata(pdev);
struct stm32_fmc2_nand *nand = &nfc->nand;
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
+ regmap_update_bits(fmc2->regmap, FMC2_PCR, FMC2_PCR_PBKEN, 0);
+ atomic_dec(&fmc2->nwait_is_used);
+ fmc2->disable(fmc2);
nand_release(&nand->chip);
if (nfc->dma_ecc_ch)
@@ -1829,7 +1905,7 @@ static int stm32_fmc2_nfc_remove(struct platform_device *pdev)
sg_free_table(&nfc->dma_data_sg);
sg_free_table(&nfc->dma_ecc_sg);
- clk_disable_unprepare(nfc->clk);
+ clk_disable_unprepare(fmc2->clk);
return 0;
}
@@ -1837,8 +1913,10 @@ static int stm32_fmc2_nfc_remove(struct platform_device *pdev)
static int __maybe_unused stm32_fmc2_nfc_suspend(struct device *dev)
{
struct stm32_fmc2_nfc *nfc = dev_get_drvdata(dev);
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
- clk_disable_unprepare(nfc->clk);
+ fmc2->disable(fmc2);
+ clk_disable_unprepare(fmc2->clk);
pinctrl_pm_select_sleep_state(dev);
@@ -1849,16 +1927,18 @@ static int __maybe_unused stm32_fmc2_nfc_resume(struct device *dev)
{
struct stm32_fmc2_nfc *nfc = dev_get_drvdata(dev);
struct stm32_fmc2_nand *nand = &nfc->nand;
+ struct stm32_fmc2 *fmc2 = nfc->fmc2;
int chip_cs, ret;
pinctrl_pm_select_default_state(dev);
- ret = clk_prepare_enable(nfc->clk);
+ ret = clk_prepare_enable(fmc2->clk);
if (ret) {
dev_err(dev, "can not enable the clock\n");
return ret;
}
+ fmc2->enable(fmc2);
stm32_fmc2_nfc_init(nfc);
for (chip_cs = 0; chip_cs < FMC2_MAX_CE; chip_cs++) {
--
1.9.1
______________________________________________________
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^ permalink raw reply related [flat|nested] 24+ messages in thread
* [12/12] mtd: rawnand: stm32_fmc2: add new MP1 compatible string
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (10 preceding siblings ...)
2020-03-23 14:58 ` [11/12] mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller Christophe Kerello
@ 2020-03-23 14:58 ` Christophe Kerello
2020-03-24 0:37 ` [00/12] add STM32 FMC2 controller drivers Marek Vasut
12 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-23 14:58 UTC (permalink / raw)
To: miquel.raynal, richard, vigneshr, lee.jones, robh+dt, mark.rutland, tony
Cc: marex, Christophe Kerello, linux-mtd, linux-kernel, linux-stm32
This patch adds "st,stm32mp1-fmc2-nand" compatible string.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 1dc568f..2c0a206 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -1956,6 +1956,7 @@ static SIMPLE_DEV_PM_OPS(stm32_fmc2_nfc_pm_ops, stm32_fmc2_nfc_suspend,
static const struct of_device_id stm32_fmc2_nfc_match[] = {
{.compatible = "st,stm32mp15-fmc2"},
+ {.compatible = "st,stm32mp1-fmc2-nand"},
{}
};
MODULE_DEVICE_TABLE(of, stm32_fmc2_nfc_match);
--
1.9.1
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^ permalink raw reply related [flat|nested] 24+ messages in thread
* Re: [00/12] add STM32 FMC2 controller drivers
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
` (11 preceding siblings ...)
2020-03-23 14:58 ` [12/12] mtd: rawnand: stm32_fmc2: add new MP1 compatible string Christophe Kerello
@ 2020-03-24 0:37 ` Marek Vasut
2020-03-24 7:36 ` Christophe Kerello
12 siblings, 1 reply; 24+ messages in thread
From: Marek Vasut @ 2020-03-24 0:37 UTC (permalink / raw)
To: Christophe Kerello, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/23/20 3:58 PM, Christophe Kerello wrote:
> The FMC2 functional block makes the interface with: synchronous and
> asynchronous static devices (such as PSNOR, PSRAM or other memory-mapped
> peripherals) and NAND flash memories.
> Its main purposes are:
> - to translate AXI transactions into the appropriate external device
> protocol
> - to meet the access time requirements of the external devices
> All external devices share the addresses, data and control signals with the
> controller. Each external device is accessed by means of a unique Chip
> Select. The FMC2 performs only one access at a time to an external device.
>
> Christophe Kerello (12):
> dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation
> mfd: stm32-fmc2: add STM32 FMC2 controller driver
> bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
> mtd: rawnand: stm32_fmc2: manage all errors cases at probe time
> mtd: rawnand: stm32_fmc2: remove useless inline comments
> mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts
> mtd: rawnand: stm32_fmc2: cleanup
> mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros
> mtd: rawnand: stm32_fmc2: move all registers
> mtd: rawnand: stm32_fmc2: use regmap APIs
> mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller
> mtd: rawnand: stm32_fmc2: add new MP1 compatible string
This doesn't apply to either next or 5.6-rc7, do you have a tree
somewhere with those patches applied ?
______________________________________________________
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [10/12] mtd: rawnand: stm32_fmc2: use regmap APIs
2020-03-23 14:58 ` [10/12] mtd: rawnand: stm32_fmc2: use regmap APIs Christophe Kerello
@ 2020-03-24 0:44 ` Marek Vasut
2020-03-24 10:38 ` Christophe Kerello
0 siblings, 1 reply; 24+ messages in thread
From: Marek Vasut @ 2020-03-24 0:44 UTC (permalink / raw)
To: Christophe Kerello, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/23/20 3:58 PM, Christophe Kerello wrote:
[...]
> @@ -531,11 +515,11 @@ static int stm32_fmc2_nfc_bch_correct(struct nand_chip *chip, u8 *dat,
> return -ETIMEDOUT;
> }
>
> - ecc_sta[0] = readl_relaxed(nfc->io_base + FMC2_BCHDSR0);
> - ecc_sta[1] = readl_relaxed(nfc->io_base + FMC2_BCHDSR1);
> - ecc_sta[2] = readl_relaxed(nfc->io_base + FMC2_BCHDSR2);
> - ecc_sta[3] = readl_relaxed(nfc->io_base + FMC2_BCHDSR3);
> - ecc_sta[4] = readl_relaxed(nfc->io_base + FMC2_BCHDSR4);
> + regmap_read(nfc->regmap, FMC2_BCHDSR0, &ecc_sta[0]);
> + regmap_read(nfc->regmap, FMC2_BCHDSR1, &ecc_sta[1]);
> + regmap_read(nfc->regmap, FMC2_BCHDSR2, &ecc_sta[2]);
> + regmap_read(nfc->regmap, FMC2_BCHDSR3, &ecc_sta[3]);
> + regmap_read(nfc->regmap, FMC2_BCHDSR4, &ecc_sta[4]);
Would regmap_bulk_read() work here ?
______________________________________________________
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [00/12] add STM32 FMC2 controller drivers
2020-03-24 0:37 ` [00/12] add STM32 FMC2 controller drivers Marek Vasut
@ 2020-03-24 7:36 ` Christophe Kerello
2020-03-24 13:27 ` Marek Vasut
0 siblings, 1 reply; 24+ messages in thread
From: Christophe Kerello @ 2020-03-24 7:36 UTC (permalink / raw)
To: Marek Vasut, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/24/20 1:37 AM, Marek Vasut wrote:
> On 3/23/20 3:58 PM, Christophe Kerello wrote:
>> The FMC2 functional block makes the interface with: synchronous and
>> asynchronous static devices (such as PSNOR, PSRAM or other memory-mapped
>> peripherals) and NAND flash memories.
>> Its main purposes are:
>> - to translate AXI transactions into the appropriate external device
>> protocol
>> - to meet the access time requirements of the external devices
>> All external devices share the addresses, data and control signals with the
>> controller. Each external device is accessed by means of a unique Chip
>> Select. The FMC2 performs only one access at a time to an external device.
>>
>> Christophe Kerello (12):
>> dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation
>> mfd: stm32-fmc2: add STM32 FMC2 controller driver
>> bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
>> mtd: rawnand: stm32_fmc2: manage all errors cases at probe time
>> mtd: rawnand: stm32_fmc2: remove useless inline comments
>> mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts
>> mtd: rawnand: stm32_fmc2: cleanup
>> mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros
>> mtd: rawnand: stm32_fmc2: move all registers
>> mtd: rawnand: stm32_fmc2: use regmap APIs
>> mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller
>> mtd: rawnand: stm32_fmc2: add new MP1 compatible string
>
> This doesn't apply to either next or 5.6-rc7, do you have a tree
> somewhere with those patches applied ?
>
Hi Marek,
This implementation has been done on mtd/nand/next branch.
Regards,
Christophe Kerello.
______________________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [10/12] mtd: rawnand: stm32_fmc2: use regmap APIs
2020-03-24 0:44 ` Marek Vasut
@ 2020-03-24 10:38 ` Christophe Kerello
0 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-24 10:38 UTC (permalink / raw)
To: Marek Vasut, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/24/20 1:44 AM, Marek Vasut wrote:
> On 3/23/20 3:58 PM, Christophe Kerello wrote:
> [...]
>> @@ -531,11 +515,11 @@ static int stm32_fmc2_nfc_bch_correct(struct nand_chip *chip, u8 *dat,
>> return -ETIMEDOUT;
>> }
>>
>> - ecc_sta[0] = readl_relaxed(nfc->io_base + FMC2_BCHDSR0);
>> - ecc_sta[1] = readl_relaxed(nfc->io_base + FMC2_BCHDSR1);
>> - ecc_sta[2] = readl_relaxed(nfc->io_base + FMC2_BCHDSR2);
>> - ecc_sta[3] = readl_relaxed(nfc->io_base + FMC2_BCHDSR3);
>> - ecc_sta[4] = readl_relaxed(nfc->io_base + FMC2_BCHDSR4);
>> + regmap_read(nfc->regmap, FMC2_BCHDSR0, &ecc_sta[0]);
>> + regmap_read(nfc->regmap, FMC2_BCHDSR1, &ecc_sta[1]);
>> + regmap_read(nfc->regmap, FMC2_BCHDSR2, &ecc_sta[2]);
>> + regmap_read(nfc->regmap, FMC2_BCHDSR3, &ecc_sta[3]);
>> + regmap_read(nfc->regmap, FMC2_BCHDSR4, &ecc_sta[4]);
>
> Would regmap_bulk_read() work here ?
>
Hi Marek,
Yes, regmap_bulk_read can be used. It will be done on V2.
Regards,
Christophe Kerello.
______________________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [00/12] add STM32 FMC2 controller drivers
2020-03-24 7:36 ` Christophe Kerello
@ 2020-03-24 13:27 ` Marek Vasut
2020-03-24 13:37 ` Christophe Kerello
0 siblings, 1 reply; 24+ messages in thread
From: Marek Vasut @ 2020-03-24 13:27 UTC (permalink / raw)
To: Christophe Kerello, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/24/20 8:36 AM, Christophe Kerello wrote:
>
>
> On 3/24/20 1:37 AM, Marek Vasut wrote:
>> On 3/23/20 3:58 PM, Christophe Kerello wrote:
>>> The FMC2 functional block makes the interface with: synchronous and
>>> asynchronous static devices (such as PSNOR, PSRAM or other memory-mapped
>>> peripherals) and NAND flash memories.
>>> Its main purposes are:
>>> - to translate AXI transactions into the appropriate external device
>>> protocol
>>> - to meet the access time requirements of the external devices
>>> All external devices share the addresses, data and control signals
>>> with the
>>> controller. Each external device is accessed by means of a unique Chip
>>> Select. The FMC2 performs only one access at a time to an external
>>> device.
>>>
>>> Christophe Kerello (12):
>>> dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation
>>> mfd: stm32-fmc2: add STM32 FMC2 controller driver
>>> bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
>>> mtd: rawnand: stm32_fmc2: manage all errors cases at probe time
>>> mtd: rawnand: stm32_fmc2: remove useless inline comments
>>> mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts
>>> mtd: rawnand: stm32_fmc2: cleanup
>>> mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros
>>> mtd: rawnand: stm32_fmc2: move all registers
>>> mtd: rawnand: stm32_fmc2: use regmap APIs
>>> mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller
>>> mtd: rawnand: stm32_fmc2: add new MP1 compatible string
>>
>> This doesn't apply to either next or 5.6-rc7, do you have a tree
>> somewhere with those patches applied ?
>>
>
> Hi Marek,
Hi,
> This implementation has been done on mtd/nand/next branch.
Of which tree ?
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [00/12] add STM32 FMC2 controller drivers
2020-03-24 13:27 ` Marek Vasut
@ 2020-03-24 13:37 ` Christophe Kerello
0 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-24 13:37 UTC (permalink / raw)
To: Marek Vasut, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/24/20 2:27 PM, Marek Vasut wrote:
> On 3/24/20 8:36 AM, Christophe Kerello wrote:
>>
>>
>> On 3/24/20 1:37 AM, Marek Vasut wrote:
>>> On 3/23/20 3:58 PM, Christophe Kerello wrote:
>>>> The FMC2 functional block makes the interface with: synchronous and
>>>> asynchronous static devices (such as PSNOR, PSRAM or other memory-mapped
>>>> peripherals) and NAND flash memories.
>>>> Its main purposes are:
>>>> - to translate AXI transactions into the appropriate external device
>>>> protocol
>>>> - to meet the access time requirements of the external devices
>>>> All external devices share the addresses, data and control signals
>>>> with the
>>>> controller. Each external device is accessed by means of a unique Chip
>>>> Select. The FMC2 performs only one access at a time to an external
>>>> device.
>>>>
>>>> Christophe Kerello (12):
>>>> dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation
>>>> mfd: stm32-fmc2: add STM32 FMC2 controller driver
>>>> bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
>>>> mtd: rawnand: stm32_fmc2: manage all errors cases at probe time
>>>> mtd: rawnand: stm32_fmc2: remove useless inline comments
>>>> mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts
>>>> mtd: rawnand: stm32_fmc2: cleanup
>>>> mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros
>>>> mtd: rawnand: stm32_fmc2: move all registers
>>>> mtd: rawnand: stm32_fmc2: use regmap APIs
>>>> mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller
>>>> mtd: rawnand: stm32_fmc2: add new MP1 compatible string
>>>
>>> This doesn't apply to either next or 5.6-rc7, do you have a tree
>>> somewhere with those patches applied ?
>>>
>>
>> Hi Marek,
>
> Hi,
>
>> This implementation has been done on mtd/nand/next branch.
>
> Of which tree ?
>
Hi Marek,
I am using https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git
Regards,
Christophe Kerello.
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [02/12] mfd: stm32-fmc2: add STM32 FMC2 controller driver
2020-03-23 14:58 ` [02/12] mfd: stm32-fmc2: add STM32 FMC2 controller driver Christophe Kerello
@ 2020-03-29 23:36 ` Marek Vasut
2020-03-30 9:18 ` Christophe Kerello
0 siblings, 1 reply; 24+ messages in thread
From: Marek Vasut @ 2020-03-29 23:36 UTC (permalink / raw)
To: Christophe Kerello, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/23/20 3:58 PM, Christophe Kerello wrote:
> The driver adds the support for the STMicroelectronics FMC2 controller
> found on STM32MP SOCs.
>
> The FMC2 functional block makes the interface with: synchronous and
> asynchronous static memories (such as PSNOR, PSRAM or other
> memory-mapped peripherals) and NAND flash memories.
>
> Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
[...]
> +static const struct of_device_id stm32_fmc2_match[] = {
> + {.compatible = "st,stm32mp1-fmc2"},
stm32mp151.dtsi uses "st,stm32mp15-fmc2" compatible string for FMC (with
extra "5" in the string).
> + {}
> +};
> +MODULE_DEVICE_TABLE(of, stm32_fmc2_match);
> +
> +static struct platform_driver stm32_fmc2_driver = {
> + .probe = stm32_fmc2_probe,
> + .driver = {
> + .name = "stm32_fmc2",
> + .of_match_table = stm32_fmc2_match,
> + .pm = &stm32_fmc2_pm_ops,
> + },
> +};
> +module_platform_driver(stm32_fmc2_driver);
[...]
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
2020-03-23 14:58 ` [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI " Christophe Kerello
@ 2020-03-30 1:24 ` Marek Vasut
2020-03-30 9:19 ` Christophe Kerello
0 siblings, 1 reply; 24+ messages in thread
From: Marek Vasut @ 2020-03-30 1:24 UTC (permalink / raw)
To: Christophe Kerello, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/23/20 3:58 PM, Christophe Kerello wrote:
> The driver adds the support for the STMicroelectronics FMC2 EBI controller
> found on STM32MP SOCs.
>
On DH STM32MP1 SoM in PDK2 carrier board,
Tested-by: Marek Vasut <marex@denx.de>
btw. it seems this sets BTRx DATLAT and CLKDIV to 0xf , it's "Don't
care" in the datasheet for Muxed mode, but then it should probably be
set to 0.
The bindings I used are below:
&fmc {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&fmc_pins_b>;
pinctrl-1 = <&fmc_sleep_pins_b>;
status = "okay";
#address-cells = <1>;
#size-cells = <1>;
/delete-property/interrupts;
/delete-property/dmas;
/delete-property/dma-names;
reg = <0x58002000 0x1000>;
ranges;
ebi {
#address-cells = <2>;
#size-cells = <1>;
compatible = "st,stm32mp1-fmc2-ebi";
ranges = <0 0 0x60000000 0x4000000>,
<1 0 0x64000000 0x4000000>,
<2 0 0x68000000 0x4000000>,
<3 0 0x6c000000 0x4000000>;
ksz8851: ks8851mll@0,0 {
compatible = "micrel,ks8851-mll";
reg = <1 0x0 0x2 1 0x2 0x20000>;
interrupt-parent = <&gpioc>;
interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
bank-width = <2>;
/* Timing values are in nS */
st,fmc2_ebi_cs_mux_enable;
st,fmc2_ebi_cs_transaction_type = <4>;
st,fmc2_ebi_cs_buswidth = <16>;
st,fmc2_ebi_cs_address_setup = <6>;
st,fmc2_ebi_cs_address_hold = <6>;
st,fmc2_ebi_cs_data_setup = <127>;
st,fmc2_ebi_cs_bus_turnaround = <9>;
st,fmc2_ebi_cs_data_hold = <9>;
};
sram@3,0 {
compatible = "mtd-ram";
reg = <3 0x0 0x80000>;
bank-width = <2>;
/* Timing values are in nS */
st,fmc2_ebi_cs_mux_enable;
st,fmc2_ebi_cs_transaction_type = <4>;
st,fmc2_ebi_cs_buswidth = <16>;
st,fmc2_ebi_cs_address_setup = <6>;
st,fmc2_ebi_cs_address_hold = <6>;
st,fmc2_ebi_cs_data_setup = <127>;
st,fmc2_ebi_cs_bus_turnaround = <9>;
st,fmc2_ebi_cs_data_hold = <9>;
};
};
};
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [02/12] mfd: stm32-fmc2: add STM32 FMC2 controller driver
2020-03-29 23:36 ` Marek Vasut
@ 2020-03-30 9:18 ` Christophe Kerello
0 siblings, 0 replies; 24+ messages in thread
From: Christophe Kerello @ 2020-03-30 9:18 UTC (permalink / raw)
To: Marek Vasut, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/30/20 1:36 AM, Marek Vasut wrote:
> On 3/23/20 3:58 PM, Christophe Kerello wrote:
>> The driver adds the support for the STMicroelectronics FMC2 controller
>> found on STM32MP SOCs.
>>
>> The FMC2 functional block makes the interface with: synchronous and
>> asynchronous static memories (such as PSNOR, PSRAM or other
>> memory-mapped peripherals) and NAND flash memories.
>>
>> Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
> [...]
>> +static const struct of_device_id stm32_fmc2_match[] = {
>> + {.compatible = "st,stm32mp1-fmc2"},
>
> stm32mp151.dtsi uses "st,stm32mp15-fmc2" compatible string for FMC (with
> extra "5" in the string).
>
Hi Marek,
I have not sent in this patch set the update of the device tree files.
Currently, for backward compatibility, the FMC2 is only supported the
NAND driver. We need to wait the review of the different maintainers
before updating the device tree files (bindings acked, ...).
I will send a DT file update for your own test.
Regards,
Christophe Kerello.
>> + {}
>> +};
>> +MODULE_DEVICE_TABLE(of, stm32_fmc2_match);
>> +
>> +static struct platform_driver stm32_fmc2_driver = {
>> + .probe = stm32_fmc2_probe,
>> + .driver = {
>> + .name = "stm32_fmc2",
>> + .of_match_table = stm32_fmc2_match,
>> + .pm = &stm32_fmc2_pm_ops,
>> + },
>> +};
>> +module_platform_driver(stm32_fmc2_driver);
> [...]
>
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
2020-03-30 1:24 ` Marek Vasut
@ 2020-03-30 9:19 ` Christophe Kerello
2020-03-30 9:30 ` Marek Vasut
0 siblings, 1 reply; 24+ messages in thread
From: Christophe Kerello @ 2020-03-30 9:19 UTC (permalink / raw)
To: Marek Vasut, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/30/20 3:24 AM, Marek Vasut wrote:
> On 3/23/20 3:58 PM, Christophe Kerello wrote:
>> The driver adds the support for the STMicroelectronics FMC2 EBI controller
>> found on STM32MP SOCs.
>>
>
> On DH STM32MP1 SoM in PDK2 carrier board,
> Tested-by: Marek Vasut <marex@denx.de>
>
> btw. it seems this sets BTRx DATLAT and CLKDIV to 0xf , it's "Don't
> care" in the datasheet for Muxed mode, but then it should probably be
> set to 0.
Hi Marek,
Thanks for testing.
These 2 bit fields (BTRx DATLAT and CLKDIV) are only needed for
synchronous transactions. Based on your bindings, the transaction type
is asynchronous.
CLKDIV bit fields should not be set to 0x0, as this value is reserved
for this bit field. The driver keeps the reset value when it is not
needed to update a bit field.
Regards,
Christophe Kerello.
>
> The bindings I used are below:
>
> &fmc {
> pinctrl-names = "default", "sleep";
> pinctrl-0 = <&fmc_pins_b>;
> pinctrl-1 = <&fmc_sleep_pins_b>;
> status = "okay";
> #address-cells = <1>;
> #size-cells = <1>;
> /delete-property/interrupts;
> /delete-property/dmas;
> /delete-property/dma-names;
> reg = <0x58002000 0x1000>;
> ranges;
>
> ebi {
> #address-cells = <2>;
> #size-cells = <1>;
> compatible = "st,stm32mp1-fmc2-ebi";
> ranges = <0 0 0x60000000 0x4000000>,
> <1 0 0x64000000 0x4000000>,
> <2 0 0x68000000 0x4000000>,
> <3 0 0x6c000000 0x4000000>;
>
> ksz8851: ks8851mll@0,0 {
> compatible = "micrel,ks8851-mll";
> reg = <1 0x0 0x2 1 0x2 0x20000>;
> interrupt-parent = <&gpioc>;
> interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
> bank-width = <2>;
>
> /* Timing values are in nS */
> st,fmc2_ebi_cs_mux_enable;
> st,fmc2_ebi_cs_transaction_type = <4>;
> st,fmc2_ebi_cs_buswidth = <16>;
> st,fmc2_ebi_cs_address_setup = <6>;
> st,fmc2_ebi_cs_address_hold = <6>;
> st,fmc2_ebi_cs_data_setup = <127>;
> st,fmc2_ebi_cs_bus_turnaround = <9>;
> st,fmc2_ebi_cs_data_hold = <9>;
> };
>
> sram@3,0 {
> compatible = "mtd-ram";
> reg = <3 0x0 0x80000>;
> bank-width = <2>;
>
> /* Timing values are in nS */
> st,fmc2_ebi_cs_mux_enable;
> st,fmc2_ebi_cs_transaction_type = <4>;
> st,fmc2_ebi_cs_buswidth = <16>;
> st,fmc2_ebi_cs_address_setup = <6>;
> st,fmc2_ebi_cs_address_hold = <6>;
> st,fmc2_ebi_cs_data_setup = <127>;
> st,fmc2_ebi_cs_bus_turnaround = <9>;
> st,fmc2_ebi_cs_data_hold = <9>;
> };
> };
> };
>
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
2020-03-30 9:19 ` Christophe Kerello
@ 2020-03-30 9:30 ` Marek Vasut
0 siblings, 0 replies; 24+ messages in thread
From: Marek Vasut @ 2020-03-30 9:30 UTC (permalink / raw)
To: Christophe Kerello, miquel.raynal, richard, vigneshr, lee.jones,
robh+dt, mark.rutland, tony
Cc: linux-mtd, linux-kernel, linux-stm32
On 3/30/20 11:19 AM, Christophe Kerello wrote:
>
>
> On 3/30/20 3:24 AM, Marek Vasut wrote:
>> On 3/23/20 3:58 PM, Christophe Kerello wrote:
>>> The driver adds the support for the STMicroelectronics FMC2 EBI
>>> controller
>>> found on STM32MP SOCs.
>>>
>>
>> On DH STM32MP1 SoM in PDK2 carrier board,
>> Tested-by: Marek Vasut <marex@denx.de>
>>
>> btw. it seems this sets BTRx DATLAT and CLKDIV to 0xf , it's "Don't
>> care" in the datasheet for Muxed mode, but then it should probably be
>> set to 0.
>
> Hi Marek,
Hi,
> Thanks for testing.
Sure
> These 2 bit fields (BTRx DATLAT and CLKDIV) are only needed for
> synchronous transactions. Based on your bindings, the transaction type
> is asynchronous.
> CLKDIV bit fields should not be set to 0x0, as this value is reserved
> for this bit field. The driver keeps the reset value when it is not
> needed to update a bit field.
Then I guess that's fine either way.
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^ permalink raw reply [flat|nested] 24+ messages in thread
end of thread, other threads:[~2020-03-30 10:01 UTC | newest]
Thread overview: 24+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-03-23 14:58 [00/12] add STM32 FMC2 controller drivers Christophe Kerello
2020-03-23 14:58 ` [01/12] dt-bindings: mfd: stm32-fmc2: add STM32 FMC2 controller documentation Christophe Kerello
2020-03-23 14:58 ` [02/12] mfd: stm32-fmc2: add STM32 FMC2 controller driver Christophe Kerello
2020-03-29 23:36 ` Marek Vasut
2020-03-30 9:18 ` Christophe Kerello
2020-03-23 14:58 ` [03/12] bus: stm32-fmc2-ebi: add STM32 FMC2 EBI " Christophe Kerello
2020-03-30 1:24 ` Marek Vasut
2020-03-30 9:19 ` Christophe Kerello
2020-03-30 9:30 ` Marek Vasut
2020-03-23 14:58 ` [04/12] mtd: rawnand: stm32_fmc2: manage all errors cases at probe time Christophe Kerello
2020-03-23 14:58 ` [05/12] mtd: rawnand: stm32_fmc2: remove useless inline comments Christophe Kerello
2020-03-23 14:58 ` [06/12] mtd: rawnand: stm32_fmc2: use FMC2_TIMEOUT_MS for timeouts Christophe Kerello
2020-03-23 14:58 ` [07/12] mtd: rawnand: stm32_fmc2: cleanup Christophe Kerello
2020-03-23 14:58 ` [08/12] mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros Christophe Kerello
2020-03-23 14:58 ` [09/12] mtd: rawnand: stm32_fmc2: move all registers Christophe Kerello
2020-03-23 14:58 ` [10/12] mtd: rawnand: stm32_fmc2: use regmap APIs Christophe Kerello
2020-03-24 0:44 ` Marek Vasut
2020-03-24 10:38 ` Christophe Kerello
2020-03-23 14:58 ` [11/12] mtd: rawnand: stm32_fmc2: use stm32_fmc2 structure in nfc controller Christophe Kerello
2020-03-23 14:58 ` [12/12] mtd: rawnand: stm32_fmc2: add new MP1 compatible string Christophe Kerello
2020-03-24 0:37 ` [00/12] add STM32 FMC2 controller drivers Marek Vasut
2020-03-24 7:36 ` Christophe Kerello
2020-03-24 13:27 ` Marek Vasut
2020-03-24 13:37 ` Christophe Kerello
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