* [PATCH v2 0/7] Remove ARM platform efm32
@ 2021-01-15 15:51 Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 1/7] ARM: drop efm32 platform Uwe Kleine-König
` (7 more replies)
0 siblings, 8 replies; 15+ messages in thread
From: Uwe Kleine-König @ 2021-01-15 15:51 UTC (permalink / raw)
To: Arnd Bergmann, Olof Johansson, Rob Herring, Greg Kroah-Hartman,
Jiri Slaby, Michael Turquette, Stephen Boyd, Daniel Lezcano,
Thomas Gleixner, Mark Brown, Wolfram Sang
Cc: devicetree, linux-serial, Uwe Kleine-König, linux-kernel,
linux-spi, soc, linux-i2c, kernel, linux-clk, linux-arm-kernel
From: Uwe Kleine-König <uwe@kleine-koenig.org>
Hello,
compared to v1 (Message-Id:
20210114151630.128830-1-u.kleine-koenig@pengutronix.de) I did the following changes:
- add "serial" to the summary line of the patch removing the serial
driver
- actually remove the serial driver in the patch that claims to do this
instead of patch 1.
On irc Arnd signalled to want to merge the first patch. As there are no
hard interdependencies between these, I think the best approach is for the
individual maintainers to pick up the patches they are responsible for.
Thanks and best regards,
Uwe
Uwe Kleine-König (7):
ARM: drop efm32 platform
clk: Drop unused efm32gg driver
clocksource: Drop unused efm32 timer code
spi: Drop unused efm32 bus driver
i2c: Drop unused efm32 bus driver
tty: serial: Drop unused efm32 serial driver
MAINTAINERS: Remove deleted platform efm32
MAINTAINERS | 7 -
arch/arm/Kconfig | 10 +-
arch/arm/Kconfig.debug | 17 -
arch/arm/Makefile | 1 -
arch/arm/boot/dts/Makefile | 2 -
arch/arm/boot/dts/efm32gg-dk3750.dts | 88 ---
arch/arm/boot/dts/efm32gg.dtsi | 177 -----
arch/arm/configs/efm32_defconfig | 98 ---
arch/arm/include/debug/efm32.S | 45 --
arch/arm/mach-efm32/Makefile | 2 -
arch/arm/mach-efm32/Makefile.boot | 4 -
arch/arm/mach-efm32/dtmachine.c | 16 -
arch/arm/mm/Kconfig | 1 -
drivers/clk/Makefile | 1 -
drivers/clk/clk-efm32gg.c | 84 ---
drivers/clocksource/Kconfig | 9 -
drivers/clocksource/Makefile | 1 -
drivers/clocksource/timer-efm32.c | 278 --------
drivers/i2c/busses/Kconfig | 7 -
drivers/i2c/busses/Makefile | 1 -
drivers/i2c/busses/i2c-efm32.c | 469 -------------
drivers/spi/Kconfig | 7 -
drivers/spi/Makefile | 1 -
drivers/spi/spi-efm32.c | 462 ------------
drivers/tty/serial/Kconfig | 13 -
drivers/tty/serial/Makefile | 1 -
drivers/tty/serial/efm32-uart.c | 852 -----------------------
include/linux/platform_data/efm32-spi.h | 15 -
include/linux/platform_data/efm32-uart.h | 19 -
include/uapi/linux/serial_core.h | 3 -
30 files changed, 1 insertion(+), 2690 deletions(-)
delete mode 100644 arch/arm/boot/dts/efm32gg-dk3750.dts
delete mode 100644 arch/arm/boot/dts/efm32gg.dtsi
delete mode 100644 arch/arm/configs/efm32_defconfig
delete mode 100644 arch/arm/include/debug/efm32.S
delete mode 100644 arch/arm/mach-efm32/Makefile
delete mode 100644 arch/arm/mach-efm32/Makefile.boot
delete mode 100644 arch/arm/mach-efm32/dtmachine.c
delete mode 100644 drivers/clk/clk-efm32gg.c
delete mode 100644 drivers/clocksource/timer-efm32.c
delete mode 100644 drivers/i2c/busses/i2c-efm32.c
delete mode 100644 drivers/spi/spi-efm32.c
delete mode 100644 drivers/tty/serial/efm32-uart.c
delete mode 100644 include/linux/platform_data/efm32-spi.h
delete mode 100644 include/linux/platform_data/efm32-uart.h
base-commit: 5c8fe583cce542aa0b84adc939ce85293de36e5e
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH v2 1/7] ARM: drop efm32 platform
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
@ 2021-01-15 15:51 ` Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 2/7] clk: Drop unused efm32gg driver Uwe Kleine-König
` (6 subsequent siblings)
7 siblings, 0 replies; 15+ messages in thread
From: Uwe Kleine-König @ 2021-01-15 15:51 UTC (permalink / raw)
To: Arnd Bergmann, Olof Johansson; +Cc: soc, kernel, linux-arm-kernel
I didn't touch this code since it served as a platform to introduce
ARMv7-M support to Linux. The only known machine that runs Linux has only
4 MiB of RAM (that originally only exists to hold the display's framebuffer).
There are no known users and no further use foreseeable, so drop the
code.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
arch/arm/Kconfig | 10 +-
arch/arm/Kconfig.debug | 17 ---
arch/arm/Makefile | 1 -
arch/arm/boot/dts/Makefile | 2 -
arch/arm/boot/dts/efm32gg-dk3750.dts | 88 -------------
arch/arm/boot/dts/efm32gg.dtsi | 177 ---------------------------
arch/arm/configs/efm32_defconfig | 98 ---------------
arch/arm/include/debug/efm32.S | 45 -------
arch/arm/mach-efm32/Makefile | 2 -
arch/arm/mach-efm32/Makefile.boot | 4 -
arch/arm/mach-efm32/dtmachine.c | 16 ---
arch/arm/mm/Kconfig | 1 -
12 files changed, 1 insertion(+), 460 deletions(-)
delete mode 100644 arch/arm/boot/dts/efm32gg-dk3750.dts
delete mode 100644 arch/arm/boot/dts/efm32gg.dtsi
delete mode 100644 arch/arm/configs/efm32_defconfig
delete mode 100644 arch/arm/include/debug/efm32.S
delete mode 100644 arch/arm/mach-efm32/Makefile
delete mode 100644 arch/arm/mach-efm32/Makefile.boot
delete mode 100644 arch/arm/mach-efm32/dtmachine.c
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 138248999df7..d31f3d74ce9b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -727,14 +727,6 @@ source "arch/arm/mach-zx/Kconfig"
source "arch/arm/mach-zynq/Kconfig"
# ARMv7-M architecture
-config ARCH_EFM32
- bool "Energy Micro efm32"
- depends on ARM_SINGLE_ARMV7M
- select GPIOLIB
- help
- Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
- processors.
-
config ARCH_LPC18XX
bool "NXP LPC18xx/LPC43xx"
depends on ARM_SINGLE_ARMV7M
@@ -1552,7 +1544,7 @@ config ARM_MODULE_PLTS
config FORCE_MAX_ZONEORDER
int "Maximum zone order"
default "12" if SOC_AM33XX
- default "9" if SA1111 || ARCH_EFM32
+ default "9" if SA1111
default "11"
help
The kernel memory allocator divides physically contiguous memory
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 4ff04201a8cc..46458f9f99fc 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1456,20 +1456,6 @@ choice
options; the platform specific options are deprecated
and will be soon removed.
- config DEBUG_LL_UART_EFM32
- bool "Kernel low-level debugging via efm32 UART"
- depends on ARCH_EFM32
- help
- Say Y here if you want the debug print routines to direct
- their output to an UART or USART port on efm32 based
- machines. Use the following addresses for DEBUG_UART_PHYS:
-
- 0x4000c000 | USART0
- 0x4000c400 | USART1
- 0x4000c800 | USART2
- 0x4000e000 | UART0
- 0x4000e400 | UART1
-
config DEBUG_LL_UART_PL01X
bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
help
@@ -1587,7 +1573,6 @@ config DEBUG_LL_INCLUDE
default "debug/meson.S" if DEBUG_MESON_UARTAO
default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
default "debug/exynos.S" if DEBUG_EXYNOS_UART
- default "debug/efm32.S" if DEBUG_LL_UART_EFM32
default "debug/icedcc.S" if DEBUG_ICEDCC
default "debug/imx.S" if DEBUG_IMX1_UART || \
DEBUG_IMX25_UART || \
@@ -1682,7 +1667,6 @@ config DEBUG_UART_PHYS
default 0x20201000 if DEBUG_BCM2835
default 0x3e000000 if DEBUG_BCM_KONA_UART
default 0x3f201000 if DEBUG_BCM2836
- default 0x4000e400 if DEBUG_LL_UART_EFM32
default 0x40010000 if STM32MP1_DEBUG_UART
default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \
STM32H7_DEBUG_UART
@@ -1768,7 +1752,6 @@ config DEBUG_UART_PHYS
default 0xfffff200 if DEBUG_AT91_RM9200_DBGU
depends on ARCH_EP93XX || \
DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
- DEBUG_LL_UART_EFM32 || \
DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
DEBUG_R7S9210_SCIF2 || DEBUG_R7S9210_SCIF4 || \
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 4aaec9599e8a..c1cf77805e9a 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -168,7 +168,6 @@ machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
machine-$(CONFIG_ARCH_DAVINCI) += davinci
machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
machine-$(CONFIG_ARCH_DOVE) += dove
-machine-$(CONFIG_ARCH_EFM32) += efm32
machine-$(CONFIG_ARCH_EP93XX) += ep93xx
machine-$(CONFIG_ARCH_EXYNOS) += exynos
machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 3d1ea0b25168..325e167d3404 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -177,8 +177,6 @@ dtb-$(CONFIG_ARCH_DAVINCI) += \
da850-lego-ev3.dtb
dtb-$(CONFIG_ARCH_DIGICOLOR) += \
cx92755_equinox.dtb
-dtb-$(CONFIG_ARCH_EFM32) += \
- efm32gg-dk3750.dtb
dtb-$(CONFIG_ARCH_EXYNOS3) += \
exynos3250-artik5-eval.dtb \
exynos3250-monk.dtb \
diff --git a/arch/arm/boot/dts/efm32gg-dk3750.dts b/arch/arm/boot/dts/efm32gg-dk3750.dts
deleted file mode 100644
index adfa559a488b..000000000000
--- a/arch/arm/boot/dts/efm32gg-dk3750.dts
+++ /dev/null
@@ -1,88 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Device tree for EFM32GG-DK3750 development board.
- *
- * Documentation available from
- * http://www.silabs.com/Support%20Documents/TechnicalDocs/efm32gg-dk3750-ug.pdf
- */
-
-/dts-v1/;
-#include "efm32gg.dtsi"
-
-/ {
- model = "Energy Micro Giant Gecko Development Kit";
- compatible = "efm32,dk3750";
-
- chosen {
- bootargs = "console=ttyefm4,115200 init=/linuxrc ignore_loglevel ihash_entries=64 dhash_entries=64 earlyprintk uclinux.physaddr=0x8c400000 root=/dev/mtdblock0";
- };
-
- memory@88000000 {
- device_type = "memory";
- reg = <0x88000000 0x400000>;
- };
-
- soc {
- adc@40002000 {
- status = "ok";
- };
-
- i2c@4000a000 {
- energymicro,location = <3>;
- status = "ok";
-
- temp@48 {
- compatible = "st,stds75";
- reg = <0x48>;
- };
-
- eeprom@50 {
- compatible = "microchip,24c02", "atmel,24c02";
- reg = <0x50>;
- pagesize = <16>;
- };
- };
-
- spi0: spi@4000c000 { /* USART0 */
- cs-gpios = <&gpio 68 1>; // E4
- energymicro,location = <1>;
- status = "ok";
-
- microsd@0 {
- compatible = "mmc-spi-slot";
- spi-max-frequency = <100000>;
- voltage-ranges = <3200 3400>;
- broken-cd;
- reg = <0>;
- };
- };
-
- spi1: spi@4000c400 { /* USART1 */
- cs-gpios = <&gpio 51 1>; // D3
- energymicro,location = <1>;
- status = "ok";
-
- ks8851@0 {
- compatible = "ks8851";
- spi-max-frequency = <6000000>;
- reg = <0>;
- interrupt-parent = <&boardfpga>;
- interrupts = <4>;
- };
- };
-
- uart4: uart@4000e400 { /* UART1 */
- energymicro,location = <2>;
- status = "ok";
- };
-
- boardfpga: boardfpga@80000000 {
- compatible = "efm32board";
- reg = <0x80000000 0x400>;
- irq-gpios = <&gpio 64 1>;
- interrupt-controller;
- #interrupt-cells = <1>;
- status = "ok";
- };
- };
-};
diff --git a/arch/arm/boot/dts/efm32gg.dtsi b/arch/arm/boot/dts/efm32gg.dtsi
deleted file mode 100644
index 8a58e49144cc..000000000000
--- a/arch/arm/boot/dts/efm32gg.dtsi
+++ /dev/null
@@ -1,177 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Device tree for Energy Micro EFM32 Giant Gecko SoC.
- *
- * Documentation available from
- * http://www.silabs.com/Support%20Documents/TechnicalDocs/EFM32GG-RM.pdf
- */
-
-#include "armv7-m.dtsi"
-#include "dt-bindings/clock/efm32-cmu.h"
-
-/ {
- #address-cells = <1>;
- #size-cells = <1>;
-
- aliases {
- i2c0 = &i2c0;
- i2c1 = &i2c1;
- serial0 = &uart0;
- serial1 = &uart1;
- serial2 = &uart2;
- serial3 = &uart3;
- serial4 = &uart4;
- spi0 = &spi0;
- spi1 = &spi1;
- spi2 = &spi2;
- };
-
- soc {
- adc: adc@40002000 {
- compatible = "energymicro,efm32-adc";
- reg = <0x40002000 0x400>;
- interrupts = <7>;
- clocks = <&cmu clk_HFPERCLKADC0>;
- status = "disabled";
- };
-
- gpio: gpio@40006000 {
- compatible = "energymicro,efm32-gpio";
- reg = <0x40006000 0x1000>;
- interrupts = <1 11>;
- gpio-controller;
- #gpio-cells = <2>;
- interrupt-controller;
- #interrupt-cells = <1>;
- clocks = <&cmu clk_HFPERCLKGPIO>;
- status = "ok";
- };
-
- i2c0: i2c@4000a000 {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-i2c";
- reg = <0x4000a000 0x400>;
- interrupts = <9>;
- clocks = <&cmu clk_HFPERCLKI2C0>;
- clock-frequency = <100000>;
- status = "disabled";
- };
-
- i2c1: i2c@4000a400 {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-i2c";
- reg = <0x4000a400 0x400>;
- interrupts = <10>;
- clocks = <&cmu clk_HFPERCLKI2C1>;
- clock-frequency = <100000>;
- status = "disabled";
- };
-
- spi0: spi@4000c000 { /* USART0 */
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-spi";
- reg = <0x4000c000 0x400>;
- interrupts = <3 4>;
- clocks = <&cmu clk_HFPERCLKUSART0>;
- status = "disabled";
- };
-
- spi1: spi@4000c400 { /* USART1 */
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-spi";
- reg = <0x4000c400 0x400>;
- interrupts = <15 16>;
- clocks = <&cmu clk_HFPERCLKUSART1>;
- status = "disabled";
- };
-
- spi2: spi@4000c800 { /* USART2 */
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-spi";
- reg = <0x4000c800 0x400>;
- interrupts = <18 19>;
- clocks = <&cmu clk_HFPERCLKUSART2>;
- status = "disabled";
- };
-
- uart0: uart@4000c000 { /* USART0 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000c000 0x400>;
- interrupts = <3 4>;
- clocks = <&cmu clk_HFPERCLKUSART0>;
- status = "disabled";
- };
-
- uart1: uart@4000c400 { /* USART1 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000c400 0x400>;
- interrupts = <15 16>;
- clocks = <&cmu clk_HFPERCLKUSART1>;
- status = "disabled";
- };
-
- uart2: uart@4000c800 { /* USART2 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000c800 0x400>;
- interrupts = <18 19>;
- clocks = <&cmu clk_HFPERCLKUSART2>;
- status = "disabled";
- };
-
- uart3: uart@4000e000 { /* UART0 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000e000 0x400>;
- interrupts = <20 21>;
- clocks = <&cmu clk_HFPERCLKUART0>;
- status = "disabled";
- };
-
- uart4: uart@4000e400 { /* UART1 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000e400 0x400>;
- interrupts = <22 23>;
- clocks = <&cmu clk_HFPERCLKUART1>;
- status = "disabled";
- };
-
- timer0: timer@40010000 {
- compatible = "energymicro,efm32-timer";
- reg = <0x40010000 0x400>;
- interrupts = <2>;
- clocks = <&cmu clk_HFPERCLKTIMER0>;
- };
-
- timer1: timer@40010400 {
- compatible = "energymicro,efm32-timer";
- reg = <0x40010400 0x400>;
- interrupts = <12>;
- clocks = <&cmu clk_HFPERCLKTIMER1>;
- };
-
- timer2: timer@40010800 {
- compatible = "energymicro,efm32-timer";
- reg = <0x40010800 0x400>;
- interrupts = <13>;
- clocks = <&cmu clk_HFPERCLKTIMER2>;
- };
-
- timer3: timer@40010c00 {
- compatible = "energymicro,efm32-timer";
- reg = <0x40010c00 0x400>;
- interrupts = <14>;
- clocks = <&cmu clk_HFPERCLKTIMER3>;
- };
-
- cmu: cmu@400c8000 {
- compatible = "efm32gg,cmu";
- reg = <0x400c8000 0x400>;
- interrupts = <32>;
- #clock-cells = <1>;
- };
- };
-};
diff --git a/arch/arm/configs/efm32_defconfig b/arch/arm/configs/efm32_defconfig
deleted file mode 100644
index 46213f0530c4..000000000000
--- a/arch/arm/configs/efm32_defconfig
+++ /dev/null
@@ -1,98 +0,0 @@
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_LOG_BUF_SHIFT=12
-CONFIG_CC_OPTIMIZE_FOR_SIZE=y
-# CONFIG_UID16 is not set
-# CONFIG_BASE_FULL is not set
-# CONFIG_FUTEX is not set
-# CONFIG_EPOLL is not set
-# CONFIG_SIGNALFD is not set
-# CONFIG_EVENTFD is not set
-# CONFIG_AIO is not set
-CONFIG_EMBEDDED=y
-# CONFIG_VM_EVENT_COUNTERS is not set
-# CONFIG_SLUB_DEBUG is not set
-# CONFIG_BLK_DEV_BSG is not set
-# CONFIG_MMU is not set
-CONFIG_ARM_SINGLE_ARMV7M=y
-CONFIG_ARCH_EFM32=y
-CONFIG_SET_MEM_PARAM=y
-CONFIG_DRAM_BASE=0x88000000
-CONFIG_DRAM_SIZE=0x00400000
-CONFIG_FLASH_MEM_BASE=0x8c000000
-CONFIG_FLASH_SIZE=0x01000000
-CONFIG_PREEMPT=y
-CONFIG_ZBOOT_ROM_TEXT=0x0
-CONFIG_ZBOOT_ROM_BSS=0x0
-CONFIG_XIP_KERNEL=y
-CONFIG_XIP_PHYS_ADDR=0x8c000000
-CONFIG_BINFMT_FLAT=y
-CONFIG_BINFMT_SHARED_FLAT=y
-# CONFIG_COREDUMP is not set
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_INET=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
-# CONFIG_INET_DIAG is not set
-# CONFIG_IPV6 is not set
-# CONFIG_WIRELESS is not set
-CONFIG_DEVTMPFS=y
-CONFIG_DEVTMPFS_MOUNT=y
-# CONFIG_FW_LOADER is not set
-CONFIG_MTD=y
-CONFIG_MTD_BLOCK_RO=y
-CONFIG_MTD_ROM=y
-CONFIG_MTD_UCLINUX=y
-# CONFIG_BLK_DEV is not set
-CONFIG_NETDEVICES=y
-# CONFIG_NET_VENDOR_ARC is not set
-# CONFIG_NET_CADENCE is not set
-# CONFIG_NET_VENDOR_BROADCOM is not set
-# CONFIG_NET_VENDOR_CIRRUS is not set
-# CONFIG_NET_VENDOR_FARADAY is not set
-# CONFIG_NET_VENDOR_INTEL is not set
-# CONFIG_NET_VENDOR_MARVELL is not set
-CONFIG_KS8851=y
-# CONFIG_NET_VENDOR_MICROCHIP is not set
-# CONFIG_NET_VENDOR_NATSEMI is not set
-# CONFIG_NET_VENDOR_SEEQ is not set
-# CONFIG_NET_VENDOR_SMSC is not set
-# CONFIG_NET_VENDOR_STMICRO is not set
-# CONFIG_NET_VENDOR_VIA is not set
-# CONFIG_NET_VENDOR_WIZNET is not set
-# CONFIG_WLAN is not set
-# CONFIG_INPUT is not set
-# CONFIG_SERIO is not set
-# CONFIG_VT is not set
-# CONFIG_UNIX98_PTYS is not set
-# CONFIG_LEGACY_PTYS is not set
-CONFIG_SERIAL_NONSTANDARD=y
-# CONFIG_DEVKMEM is not set
-CONFIG_SERIAL_EFM32_UART=y
-CONFIG_SERIAL_EFM32_UART_CONSOLE=y
-# CONFIG_HW_RANDOM is not set
-CONFIG_I2C=y
-# CONFIG_I2C_COMPAT is not set
-CONFIG_I2C_EFM32=y
-CONFIG_SPI=y
-CONFIG_SPI_EFM32=y
-CONFIG_GPIO_SYSFS=y
-# CONFIG_USB_SUPPORT is not set
-CONFIG_MMC=y
-CONFIG_MMC_SPI=y
-CONFIG_EXT2_FS=y
-# CONFIG_FILE_LOCKING is not set
-# CONFIG_DNOTIFY is not set
-# CONFIG_INOTIFY_USER is not set
-CONFIG_ROMFS_FS=y
-CONFIG_ROMFS_BACKED_BY_MTD=y
-# CONFIG_NETWORK_FILESYSTEMS is not set
-CONFIG_PRINTK_TIME=y
-CONFIG_DEBUG_INFO=y
-# CONFIG_ENABLE_MUST_CHECK is not set
-CONFIG_MAGIC_SYSRQ=y
-# CONFIG_SCHED_DEBUG is not set
-# CONFIG_DEBUG_BUGVERBOSE is not set
-# CONFIG_FTRACE is not set
diff --git a/arch/arm/include/debug/efm32.S b/arch/arm/include/debug/efm32.S
deleted file mode 100644
index b0083d6e31e8..000000000000
--- a/arch/arm/include/debug/efm32.S
+++ /dev/null
@@ -1,45 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2013 Pengutronix
- * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
- */
-
-#define UARTn_CMD 0x000c
-#define UARTn_CMD_TXEN 0x0004
-
-#define UARTn_STATUS 0x0010
-#define UARTn_STATUS_TXC 0x0020
-#define UARTn_STATUS_TXBL 0x0040
-
-#define UARTn_TXDATA 0x0034
-
- .macro addruart, rx, tmp, tmp2
- ldr \rx, =(CONFIG_DEBUG_UART_PHYS)
-
- /*
- * enable TX. The driver might disable it to save energy. We
- * don't care about disabling at the end as during debug power
- * consumption isn't that important.
- */
- ldr \tmp, =(UARTn_CMD_TXEN)
- str \tmp, [\rx, #UARTn_CMD]
- .endm
-
- .macro senduart,rd,rx
- strb \rd, [\rx, #UARTn_TXDATA]
- .endm
-
- .macro waituartcts,rd,rx
- .endm
-
- .macro waituarttxrdy,rd,rx
-1001: ldr \rd, [\rx, #UARTn_STATUS]
- tst \rd, #UARTn_STATUS_TXBL
- beq 1001b
- .endm
-
- .macro busyuart,rd,rx
-1001: ldr \rd, [\rx, UARTn_STATUS]
- tst \rd, #UARTn_STATUS_TXC
- bne 1001b
- .endm
diff --git a/arch/arm/mach-efm32/Makefile b/arch/arm/mach-efm32/Makefile
deleted file mode 100644
index dede3fa55a76..000000000000
--- a/arch/arm/mach-efm32/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y += dtmachine.o
diff --git a/arch/arm/mach-efm32/Makefile.boot b/arch/arm/mach-efm32/Makefile.boot
deleted file mode 100644
index cec195d4fcba..000000000000
--- a/arch/arm/mach-efm32/Makefile.boot
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
-# Patch waits for application at
-# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
diff --git a/arch/arm/mach-efm32/dtmachine.c b/arch/arm/mach-efm32/dtmachine.c
deleted file mode 100644
index e9364b843641..000000000000
--- a/arch/arm/mach-efm32/dtmachine.c
+++ /dev/null
@@ -1,16 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/kernel.h>
-
-#include <asm/v7m.h>
-
-#include <asm/mach/arch.h>
-
-static const char *const efm32gg_compat[] __initconst = {
- "efm32,dk3750",
- NULL
-};
-
-DT_MACHINE_START(EFM32DT, "EFM32 (Device Tree Support)")
- .dt_compat = efm32gg_compat,
- .restart = armv7m_restart,
-MACHINE_END
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 02692fbe2db5..35f43d0aa056 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -638,7 +638,6 @@ config CPU_V7M_NUM_IRQ
int "Number of external interrupts connected to the NVIC"
depends on CPU_V7M
default 90 if ARCH_STM32
- default 38 if ARCH_EFM32
default 112 if SOC_VF610
default 240
help
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v2 2/7] clk: Drop unused efm32gg driver
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 1/7] ARM: drop efm32 platform Uwe Kleine-König
@ 2021-01-15 15:51 ` Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 3/7] clocksource: Drop unused efm32 timer code Uwe Kleine-König
` (5 subsequent siblings)
7 siblings, 0 replies; 15+ messages in thread
From: Uwe Kleine-König @ 2021-01-15 15:51 UTC (permalink / raw)
To: Arnd Bergmann, Olof Johansson, Michael Turquette, Stephen Boyd
Cc: soc, kernel, linux-arm-kernel, linux-clk
Support for this machine was just removed, so drop the now unused clk
driver, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
drivers/clk/Makefile | 1 -
drivers/clk/clk-efm32gg.c | 84 ---------------------------------------
2 files changed, 85 deletions(-)
delete mode 100644 drivers/clk/clk-efm32gg.c
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index dbdc590e7de3..a1197d753d82 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_COMMON_CLK_CDCE706) += clk-cdce706.o
obj-$(CONFIG_COMMON_CLK_CDCE925) += clk-cdce925.o
obj-$(CONFIG_ARCH_CLPS711X) += clk-clps711x.o
obj-$(CONFIG_COMMON_CLK_CS2000_CP) += clk-cs2000-cp.o
-obj-$(CONFIG_ARCH_EFM32) += clk-efm32gg.o
obj-$(CONFIG_ARCH_SPARX5) += clk-sparx5.o
obj-$(CONFIG_COMMON_CLK_FIXED_MMIO) += clk-fixed-mmio.o
obj-$(CONFIG_COMMON_CLK_FSL_FLEXSPI) += clk-fsl-flexspi.o
diff --git a/drivers/clk/clk-efm32gg.c b/drivers/clk/clk-efm32gg.c
deleted file mode 100644
index 85beaacb4088..000000000000
--- a/drivers/clk/clk-efm32gg.c
+++ /dev/null
@@ -1,84 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2013 Pengutronix
- * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
- */
-#include <linux/io.h>
-#include <linux/clk-provider.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/slab.h>
-
-#include <dt-bindings/clock/efm32-cmu.h>
-
-#define CMU_HFPERCLKEN0 0x44
-#define CMU_MAX_CLKS 37
-
-static struct clk_hw_onecell_data *clk_data;
-
-static void __init efm32gg_cmu_init(struct device_node *np)
-{
- int i;
- void __iomem *base;
- struct clk_hw **hws;
-
- clk_data = kzalloc(struct_size(clk_data, hws, CMU_MAX_CLKS),
- GFP_KERNEL);
-
- if (!clk_data)
- return;
-
- hws = clk_data->hws;
-
- for (i = 0; i < CMU_MAX_CLKS; ++i)
- hws[i] = ERR_PTR(-ENOENT);
-
- base = of_iomap(np, 0);
- if (!base) {
- pr_warn("Failed to map address range for efm32gg,cmu node\n");
- return;
- }
-
- hws[clk_HFXO] = clk_hw_register_fixed_rate(NULL, "HFXO", NULL, 0,
- 48000000);
-
- hws[clk_HFPERCLKUSART0] = clk_hw_register_gate(NULL, "HFPERCLK.USART0",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 0, 0, NULL);
- hws[clk_HFPERCLKUSART1] = clk_hw_register_gate(NULL, "HFPERCLK.USART1",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 1, 0, NULL);
- hws[clk_HFPERCLKUSART2] = clk_hw_register_gate(NULL, "HFPERCLK.USART2",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 2, 0, NULL);
- hws[clk_HFPERCLKUART0] = clk_hw_register_gate(NULL, "HFPERCLK.UART0",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 3, 0, NULL);
- hws[clk_HFPERCLKUART1] = clk_hw_register_gate(NULL, "HFPERCLK.UART1",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 4, 0, NULL);
- hws[clk_HFPERCLKTIMER0] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER0",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 5, 0, NULL);
- hws[clk_HFPERCLKTIMER1] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER1",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 6, 0, NULL);
- hws[clk_HFPERCLKTIMER2] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER2",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 7, 0, NULL);
- hws[clk_HFPERCLKTIMER3] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER3",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 8, 0, NULL);
- hws[clk_HFPERCLKACMP0] = clk_hw_register_gate(NULL, "HFPERCLK.ACMP0",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 9, 0, NULL);
- hws[clk_HFPERCLKACMP1] = clk_hw_register_gate(NULL, "HFPERCLK.ACMP1",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 10, 0, NULL);
- hws[clk_HFPERCLKI2C0] = clk_hw_register_gate(NULL, "HFPERCLK.I2C0",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 11, 0, NULL);
- hws[clk_HFPERCLKI2C1] = clk_hw_register_gate(NULL, "HFPERCLK.I2C1",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 12, 0, NULL);
- hws[clk_HFPERCLKGPIO] = clk_hw_register_gate(NULL, "HFPERCLK.GPIO",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 13, 0, NULL);
- hws[clk_HFPERCLKVCMP] = clk_hw_register_gate(NULL, "HFPERCLK.VCMP",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 14, 0, NULL);
- hws[clk_HFPERCLKPRS] = clk_hw_register_gate(NULL, "HFPERCLK.PRS",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 15, 0, NULL);
- hws[clk_HFPERCLKADC0] = clk_hw_register_gate(NULL, "HFPERCLK.ADC0",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 16, 0, NULL);
- hws[clk_HFPERCLKDAC0] = clk_hw_register_gate(NULL, "HFPERCLK.DAC0",
- "HFXO", 0, base + CMU_HFPERCLKEN0, 17, 0, NULL);
-
- of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
-}
-CLK_OF_DECLARE(efm32ggcmu, "efm32gg,cmu", efm32gg_cmu_init);
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v2 3/7] clocksource: Drop unused efm32 timer code
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 1/7] ARM: drop efm32 platform Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 2/7] clk: Drop unused efm32gg driver Uwe Kleine-König
@ 2021-01-15 15:51 ` Uwe Kleine-König
2021-01-18 15:18 ` Daniel Lezcano
2021-01-18 18:09 ` Daniel Lezcano
2021-01-15 15:51 ` [PATCH v2 4/7] spi: Drop unused efm32 bus driver Uwe Kleine-König
` (4 subsequent siblings)
7 siblings, 2 replies; 15+ messages in thread
From: Uwe Kleine-König @ 2021-01-15 15:51 UTC (permalink / raw)
To: Arnd Bergmann, Olof Johansson, Daniel Lezcano, Thomas Gleixner
Cc: soc, kernel, linux-arm-kernel, linux-kernel
Support for this machine was just removed, so drop the now unused timer
code, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
drivers/clocksource/Kconfig | 9 -
drivers/clocksource/Makefile | 1 -
drivers/clocksource/timer-efm32.c | 278 ------------------------------
3 files changed, 288 deletions(-)
delete mode 100644 drivers/clocksource/timer-efm32.c
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 14c7c4712478..1416a32140c5 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -242,15 +242,6 @@ config INTEGRATOR_AP_TIMER
help
Enables support for the Integrator-AP timer.
-config CLKSRC_EFM32
- bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
- depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
- select CLKSRC_MMIO
- default ARCH_EFM32
- help
- Support to use the timers of EFM32 SoCs as clock source and clock
- event device.
-
config CLKSRC_LPC32XX
bool "Clocksource for LPC32XX" if COMPILE_TEST
depends on HAS_IOMEM
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 3c75cbbf8533..08173383f2d9 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -43,7 +43,6 @@ obj-$(CONFIG_VT8500_TIMER) += timer-vt8500.o
obj-$(CONFIG_NSPIRE_TIMER) += timer-zevio.o
obj-$(CONFIG_BCM_KONA_TIMER) += bcm_kona_timer.o
obj-$(CONFIG_CADENCE_TTC_TIMER) += timer-cadence-ttc.o
-obj-$(CONFIG_CLKSRC_EFM32) += timer-efm32.o
obj-$(CONFIG_CLKSRC_STM32) += timer-stm32.o
obj-$(CONFIG_CLKSRC_STM32_LP) += timer-stm32-lp.o
obj-$(CONFIG_CLKSRC_EXYNOS_MCT) += exynos_mct.o
diff --git a/drivers/clocksource/timer-efm32.c b/drivers/clocksource/timer-efm32.c
deleted file mode 100644
index 441a4b916841..000000000000
--- a/drivers/clocksource/timer-efm32.c
+++ /dev/null
@@ -1,278 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2013 Pengutronix
- * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/clocksource.h>
-#include <linux/clockchips.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/clk.h>
-
-#define TIMERn_CTRL 0x00
-#define TIMERn_CTRL_PRESC(val) (((val) & 0xf) << 24)
-#define TIMERn_CTRL_PRESC_1024 TIMERn_CTRL_PRESC(10)
-#define TIMERn_CTRL_CLKSEL(val) (((val) & 0x3) << 16)
-#define TIMERn_CTRL_CLKSEL_PRESCHFPERCLK TIMERn_CTRL_CLKSEL(0)
-#define TIMERn_CTRL_OSMEN 0x00000010
-#define TIMERn_CTRL_MODE(val) (((val) & 0x3) << 0)
-#define TIMERn_CTRL_MODE_UP TIMERn_CTRL_MODE(0)
-#define TIMERn_CTRL_MODE_DOWN TIMERn_CTRL_MODE(1)
-
-#define TIMERn_CMD 0x04
-#define TIMERn_CMD_START 0x00000001
-#define TIMERn_CMD_STOP 0x00000002
-
-#define TIMERn_IEN 0x0c
-#define TIMERn_IF 0x10
-#define TIMERn_IFS 0x14
-#define TIMERn_IFC 0x18
-#define TIMERn_IRQ_UF 0x00000002
-
-#define TIMERn_TOP 0x1c
-#define TIMERn_CNT 0x24
-
-struct efm32_clock_event_ddata {
- struct clock_event_device evtdev;
- void __iomem *base;
- unsigned periodic_top;
-};
-
-static int efm32_clock_event_shutdown(struct clock_event_device *evtdev)
-{
- struct efm32_clock_event_ddata *ddata =
- container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
-
- writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
- return 0;
-}
-
-static int efm32_clock_event_set_oneshot(struct clock_event_device *evtdev)
-{
- struct efm32_clock_event_ddata *ddata =
- container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
-
- writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
- writel_relaxed(TIMERn_CTRL_PRESC_1024 |
- TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
- TIMERn_CTRL_OSMEN |
- TIMERn_CTRL_MODE_DOWN,
- ddata->base + TIMERn_CTRL);
- return 0;
-}
-
-static int efm32_clock_event_set_periodic(struct clock_event_device *evtdev)
-{
- struct efm32_clock_event_ddata *ddata =
- container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
-
- writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
- writel_relaxed(ddata->periodic_top, ddata->base + TIMERn_TOP);
- writel_relaxed(TIMERn_CTRL_PRESC_1024 |
- TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
- TIMERn_CTRL_MODE_DOWN,
- ddata->base + TIMERn_CTRL);
- writel_relaxed(TIMERn_CMD_START, ddata->base + TIMERn_CMD);
- return 0;
-}
-
-static int efm32_clock_event_set_next_event(unsigned long evt,
- struct clock_event_device *evtdev)
-{
- struct efm32_clock_event_ddata *ddata =
- container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
-
- writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
- writel_relaxed(evt, ddata->base + TIMERn_CNT);
- writel_relaxed(TIMERn_CMD_START, ddata->base + TIMERn_CMD);
-
- return 0;
-}
-
-static irqreturn_t efm32_clock_event_handler(int irq, void *dev_id)
-{
- struct efm32_clock_event_ddata *ddata = dev_id;
-
- writel_relaxed(TIMERn_IRQ_UF, ddata->base + TIMERn_IFC);
-
- ddata->evtdev.event_handler(&ddata->evtdev);
-
- return IRQ_HANDLED;
-}
-
-static struct efm32_clock_event_ddata clock_event_ddata = {
- .evtdev = {
- .name = "efm32 clockevent",
- .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
- .set_state_shutdown = efm32_clock_event_shutdown,
- .set_state_periodic = efm32_clock_event_set_periodic,
- .set_state_oneshot = efm32_clock_event_set_oneshot,
- .set_next_event = efm32_clock_event_set_next_event,
- .rating = 200,
- },
-};
-
-static int __init efm32_clocksource_init(struct device_node *np)
-{
- struct clk *clk;
- void __iomem *base;
- unsigned long rate;
- int ret;
-
- clk = of_clk_get(np, 0);
- if (IS_ERR(clk)) {
- ret = PTR_ERR(clk);
- pr_err("failed to get clock for clocksource (%d)\n", ret);
- goto err_clk_get;
- }
-
- ret = clk_prepare_enable(clk);
- if (ret) {
- pr_err("failed to enable timer clock for clocksource (%d)\n",
- ret);
- goto err_clk_enable;
- }
- rate = clk_get_rate(clk);
-
- base = of_iomap(np, 0);
- if (!base) {
- ret = -EADDRNOTAVAIL;
- pr_err("failed to map registers for clocksource\n");
- goto err_iomap;
- }
-
- writel_relaxed(TIMERn_CTRL_PRESC_1024 |
- TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
- TIMERn_CTRL_MODE_UP, base + TIMERn_CTRL);
- writel_relaxed(TIMERn_CMD_START, base + TIMERn_CMD);
-
- ret = clocksource_mmio_init(base + TIMERn_CNT, "efm32 timer",
- DIV_ROUND_CLOSEST(rate, 1024), 200, 16,
- clocksource_mmio_readl_up);
- if (ret) {
- pr_err("failed to init clocksource (%d)\n", ret);
- goto err_clocksource_init;
- }
-
- return 0;
-
-err_clocksource_init:
-
- iounmap(base);
-err_iomap:
-
- clk_disable_unprepare(clk);
-err_clk_enable:
-
- clk_put(clk);
-err_clk_get:
-
- return ret;
-}
-
-static int __init efm32_clockevent_init(struct device_node *np)
-{
- struct clk *clk;
- void __iomem *base;
- unsigned long rate;
- int irq;
- int ret;
-
- clk = of_clk_get(np, 0);
- if (IS_ERR(clk)) {
- ret = PTR_ERR(clk);
- pr_err("failed to get clock for clockevent (%d)\n", ret);
- goto err_clk_get;
- }
-
- ret = clk_prepare_enable(clk);
- if (ret) {
- pr_err("failed to enable timer clock for clockevent (%d)\n",
- ret);
- goto err_clk_enable;
- }
- rate = clk_get_rate(clk);
-
- base = of_iomap(np, 0);
- if (!base) {
- ret = -EADDRNOTAVAIL;
- pr_err("failed to map registers for clockevent\n");
- goto err_iomap;
- }
-
- irq = irq_of_parse_and_map(np, 0);
- if (!irq) {
- ret = -ENOENT;
- pr_err("failed to get irq for clockevent\n");
- goto err_get_irq;
- }
-
- writel_relaxed(TIMERn_IRQ_UF, base + TIMERn_IEN);
-
- clock_event_ddata.base = base;
- clock_event_ddata.periodic_top = DIV_ROUND_CLOSEST(rate, 1024 * HZ);
-
- clockevents_config_and_register(&clock_event_ddata.evtdev,
- DIV_ROUND_CLOSEST(rate, 1024),
- 0xf, 0xffff);
-
- ret = request_irq(irq, efm32_clock_event_handler, IRQF_TIMER,
- "efm32 clockevent", &clock_event_ddata);
- if (ret) {
- pr_err("Failed setup irq\n");
- goto err_setup_irq;
- }
-
- return 0;
-
-err_setup_irq:
-err_get_irq:
-
- iounmap(base);
-err_iomap:
-
- clk_disable_unprepare(clk);
-err_clk_enable:
-
- clk_put(clk);
-err_clk_get:
-
- return ret;
-}
-
-/*
- * This function asserts that we have exactly one clocksource and one
- * clock_event_device in the end.
- */
-static int __init efm32_timer_init(struct device_node *np)
-{
- static int has_clocksource, has_clockevent;
- int ret = 0;
-
- if (!has_clocksource) {
- ret = efm32_clocksource_init(np);
- if (!ret) {
- has_clocksource = 1;
- return 0;
- }
- }
-
- if (!has_clockevent) {
- ret = efm32_clockevent_init(np);
- if (!ret) {
- has_clockevent = 1;
- return 0;
- }
- }
-
- return ret;
-}
-TIMER_OF_DECLARE(efm32compat, "efm32,timer", efm32_timer_init);
-TIMER_OF_DECLARE(efm32, "energymicro,efm32-timer", efm32_timer_init);
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v2 4/7] spi: Drop unused efm32 bus driver
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
` (2 preceding siblings ...)
2021-01-15 15:51 ` [PATCH v2 3/7] clocksource: Drop unused efm32 timer code Uwe Kleine-König
@ 2021-01-15 15:51 ` Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 5/7] i2c: " Uwe Kleine-König
` (3 subsequent siblings)
7 siblings, 0 replies; 15+ messages in thread
From: Uwe Kleine-König @ 2021-01-15 15:51 UTC (permalink / raw)
To: Arnd Bergmann, Olof Johansson, Mark Brown
Cc: soc, kernel, linux-arm-kernel, linux-spi
Support for this machine was just removed, so drop the now unused spi
bus driver, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
drivers/spi/Kconfig | 7 -
drivers/spi/Makefile | 1 -
drivers/spi/spi-efm32.c | 462 ------------------------
include/linux/platform_data/efm32-spi.h | 15 -
4 files changed, 485 deletions(-)
delete mode 100644 drivers/spi/spi-efm32.c
delete mode 100644 include/linux/platform_data/efm32-spi.h
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index aadaea052f51..d3375aa6e292 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -292,13 +292,6 @@ config SPI_DLN2
This driver can also be built as a module. If so, the module
will be called spi-dln2.
-config SPI_EFM32
- tristate "EFM32 SPI controller"
- depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
- select SPI_BITBANG
- help
- Driver for the spi controller found on Energy Micro's EFM32 SoCs.
-
config SPI_EP93XX
tristate "Cirrus Logic EP93xx SPI controller"
depends on ARCH_EP93XX || COMPILE_TEST
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 6fea5821662e..5a21b5cc8015 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -42,7 +42,6 @@ spi-dw-$(CONFIG_SPI_DW_DMA) += spi-dw-dma.o
obj-$(CONFIG_SPI_DW_BT1) += spi-dw-bt1.o
obj-$(CONFIG_SPI_DW_MMIO) += spi-dw-mmio.o
obj-$(CONFIG_SPI_DW_PCI) += spi-dw-pci.o
-obj-$(CONFIG_SPI_EFM32) += spi-efm32.o
obj-$(CONFIG_SPI_EP93XX) += spi-ep93xx.o
obj-$(CONFIG_SPI_FALCON) += spi-falcon.o
obj-$(CONFIG_SPI_FSI) += spi-fsi.o
diff --git a/drivers/spi/spi-efm32.c b/drivers/spi/spi-efm32.c
deleted file mode 100644
index ea6e4a7b3feb..000000000000
--- a/drivers/spi/spi-efm32.c
+++ /dev/null
@@ -1,462 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2012-2013 Uwe Kleine-Koenig for Pengutronix
- */
-#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_bitbang.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/platform_data/efm32-spi.h>
-#include <linux/of.h>
-
-#define DRIVER_NAME "efm32-spi"
-
-#define MASK_VAL(mask, val) ((val << __ffs(mask)) & mask)
-
-#define REG_CTRL 0x00
-#define REG_CTRL_SYNC 0x0001
-#define REG_CTRL_CLKPOL 0x0100
-#define REG_CTRL_CLKPHA 0x0200
-#define REG_CTRL_MSBF 0x0400
-#define REG_CTRL_TXBIL 0x1000
-
-#define REG_FRAME 0x04
-#define REG_FRAME_DATABITS__MASK 0x000f
-#define REG_FRAME_DATABITS(n) ((n) - 3)
-
-#define REG_CMD 0x0c
-#define REG_CMD_RXEN 0x0001
-#define REG_CMD_RXDIS 0x0002
-#define REG_CMD_TXEN 0x0004
-#define REG_CMD_TXDIS 0x0008
-#define REG_CMD_MASTEREN 0x0010
-
-#define REG_STATUS 0x10
-#define REG_STATUS_TXENS 0x0002
-#define REG_STATUS_TXC 0x0020
-#define REG_STATUS_TXBL 0x0040
-#define REG_STATUS_RXDATAV 0x0080
-
-#define REG_CLKDIV 0x14
-
-#define REG_RXDATAX 0x18
-#define REG_RXDATAX_RXDATA__MASK 0x01ff
-#define REG_RXDATAX_PERR 0x4000
-#define REG_RXDATAX_FERR 0x8000
-
-#define REG_TXDATA 0x34
-
-#define REG_IF 0x40
-#define REG_IF_TXBL 0x0002
-#define REG_IF_RXDATAV 0x0004
-
-#define REG_IFS 0x44
-#define REG_IFC 0x48
-#define REG_IEN 0x4c
-
-#define REG_ROUTE 0x54
-#define REG_ROUTE_RXPEN 0x0001
-#define REG_ROUTE_TXPEN 0x0002
-#define REG_ROUTE_CLKPEN 0x0008
-#define REG_ROUTE_LOCATION__MASK 0x0700
-#define REG_ROUTE_LOCATION(n) MASK_VAL(REG_ROUTE_LOCATION__MASK, (n))
-
-struct efm32_spi_ddata {
- struct spi_bitbang bitbang;
-
- spinlock_t lock;
-
- struct clk *clk;
- void __iomem *base;
- unsigned int rxirq, txirq;
- struct efm32_spi_pdata pdata;
-
- /* irq data */
- struct completion done;
- const u8 *tx_buf;
- u8 *rx_buf;
- unsigned tx_len, rx_len;
-};
-
-#define ddata_to_dev(ddata) (&(ddata->bitbang.master->dev))
-#define efm32_spi_vdbg(ddata, format, arg...) \
- dev_vdbg(ddata_to_dev(ddata), format, ##arg)
-
-static void efm32_spi_write32(struct efm32_spi_ddata *ddata,
- u32 value, unsigned offset)
-{
- writel_relaxed(value, ddata->base + offset);
-}
-
-static u32 efm32_spi_read32(struct efm32_spi_ddata *ddata, unsigned offset)
-{
- return readl_relaxed(ddata->base + offset);
-}
-
-static int efm32_spi_setup_transfer(struct spi_device *spi,
- struct spi_transfer *t)
-{
- struct efm32_spi_ddata *ddata = spi_master_get_devdata(spi->master);
-
- unsigned bpw = t->bits_per_word ?: spi->bits_per_word;
- unsigned speed = t->speed_hz ?: spi->max_speed_hz;
- unsigned long clkfreq = clk_get_rate(ddata->clk);
- u32 clkdiv;
-
- efm32_spi_write32(ddata, REG_CTRL_SYNC | REG_CTRL_MSBF |
- (spi->mode & SPI_CPHA ? REG_CTRL_CLKPHA : 0) |
- (spi->mode & SPI_CPOL ? REG_CTRL_CLKPOL : 0), REG_CTRL);
-
- efm32_spi_write32(ddata,
- REG_FRAME_DATABITS(bpw), REG_FRAME);
-
- if (2 * speed >= clkfreq)
- clkdiv = 0;
- else
- clkdiv = 64 * (DIV_ROUND_UP(2 * clkfreq, speed) - 4);
-
- if (clkdiv > (1U << 21))
- return -EINVAL;
-
- efm32_spi_write32(ddata, clkdiv, REG_CLKDIV);
- efm32_spi_write32(ddata, REG_CMD_MASTEREN, REG_CMD);
- efm32_spi_write32(ddata, REG_CMD_RXEN | REG_CMD_TXEN, REG_CMD);
-
- return 0;
-}
-
-static void efm32_spi_tx_u8(struct efm32_spi_ddata *ddata)
-{
- u8 val = 0;
-
- if (ddata->tx_buf) {
- val = *ddata->tx_buf;
- ddata->tx_buf++;
- }
-
- ddata->tx_len--;
- efm32_spi_write32(ddata, val, REG_TXDATA);
- efm32_spi_vdbg(ddata, "%s: tx 0x%x\n", __func__, val);
-}
-
-static void efm32_spi_rx_u8(struct efm32_spi_ddata *ddata)
-{
- u32 rxdata = efm32_spi_read32(ddata, REG_RXDATAX);
- efm32_spi_vdbg(ddata, "%s: rx 0x%x\n", __func__, rxdata);
-
- if (ddata->rx_buf) {
- *ddata->rx_buf = rxdata;
- ddata->rx_buf++;
- }
-
- ddata->rx_len--;
-}
-
-static void efm32_spi_filltx(struct efm32_spi_ddata *ddata)
-{
- while (ddata->tx_len &&
- ddata->tx_len + 2 > ddata->rx_len &&
- efm32_spi_read32(ddata, REG_STATUS) & REG_STATUS_TXBL) {
- efm32_spi_tx_u8(ddata);
- }
-}
-
-static int efm32_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
-{
- struct efm32_spi_ddata *ddata = spi_master_get_devdata(spi->master);
- int ret = -EBUSY;
-
- spin_lock_irq(&ddata->lock);
-
- if (ddata->tx_buf || ddata->rx_buf)
- goto out_unlock;
-
- ddata->tx_buf = t->tx_buf;
- ddata->rx_buf = t->rx_buf;
- ddata->tx_len = ddata->rx_len =
- t->len * DIV_ROUND_UP(t->bits_per_word, 8);
-
- efm32_spi_filltx(ddata);
-
- reinit_completion(&ddata->done);
-
- efm32_spi_write32(ddata, REG_IF_TXBL | REG_IF_RXDATAV, REG_IEN);
-
- spin_unlock_irq(&ddata->lock);
-
- wait_for_completion(&ddata->done);
-
- spin_lock_irq(&ddata->lock);
-
- ret = t->len - max(ddata->tx_len, ddata->rx_len);
-
- efm32_spi_write32(ddata, 0, REG_IEN);
- ddata->tx_buf = ddata->rx_buf = NULL;
-
-out_unlock:
- spin_unlock_irq(&ddata->lock);
-
- return ret;
-}
-
-static irqreturn_t efm32_spi_rxirq(int irq, void *data)
-{
- struct efm32_spi_ddata *ddata = data;
- irqreturn_t ret = IRQ_NONE;
-
- spin_lock(&ddata->lock);
-
- while (ddata->rx_len > 0 &&
- efm32_spi_read32(ddata, REG_STATUS) &
- REG_STATUS_RXDATAV) {
- efm32_spi_rx_u8(ddata);
-
- ret = IRQ_HANDLED;
- }
-
- if (!ddata->rx_len) {
- u32 ien = efm32_spi_read32(ddata, REG_IEN);
-
- ien &= ~REG_IF_RXDATAV;
-
- efm32_spi_write32(ddata, ien, REG_IEN);
-
- complete(&ddata->done);
- }
-
- spin_unlock(&ddata->lock);
-
- return ret;
-}
-
-static irqreturn_t efm32_spi_txirq(int irq, void *data)
-{
- struct efm32_spi_ddata *ddata = data;
-
- efm32_spi_vdbg(ddata,
- "%s: txlen = %u, rxlen = %u, if=0x%08x, stat=0x%08x\n",
- __func__, ddata->tx_len, ddata->rx_len,
- efm32_spi_read32(ddata, REG_IF),
- efm32_spi_read32(ddata, REG_STATUS));
-
- spin_lock(&ddata->lock);
-
- efm32_spi_filltx(ddata);
-
- efm32_spi_vdbg(ddata, "%s: txlen = %u, rxlen = %u\n",
- __func__, ddata->tx_len, ddata->rx_len);
-
- if (!ddata->tx_len) {
- u32 ien = efm32_spi_read32(ddata, REG_IEN);
-
- ien &= ~REG_IF_TXBL;
-
- efm32_spi_write32(ddata, ien, REG_IEN);
- efm32_spi_vdbg(ddata, "disable TXBL\n");
- }
-
- spin_unlock(&ddata->lock);
-
- return IRQ_HANDLED;
-}
-
-static u32 efm32_spi_get_configured_location(struct efm32_spi_ddata *ddata)
-{
- u32 reg = efm32_spi_read32(ddata, REG_ROUTE);
-
- return (reg & REG_ROUTE_LOCATION__MASK) >> __ffs(REG_ROUTE_LOCATION__MASK);
-}
-
-static void efm32_spi_probe_dt(struct platform_device *pdev,
- struct spi_master *master, struct efm32_spi_ddata *ddata)
-{
- struct device_node *np = pdev->dev.of_node;
- u32 location;
- int ret;
-
- ret = of_property_read_u32(np, "energymicro,location", &location);
-
- if (ret)
- /* fall back to wrongly namespaced property */
- ret = of_property_read_u32(np, "efm32,location", &location);
-
- if (ret)
- /* fall back to old and (wrongly) generic property "location" */
- ret = of_property_read_u32(np, "location", &location);
-
- if (!ret) {
- dev_dbg(&pdev->dev, "using location %u\n", location);
- } else {
- /* default to location configured in hardware */
- location = efm32_spi_get_configured_location(ddata);
-
- dev_info(&pdev->dev, "fall back to location %u\n", location);
- }
-
- ddata->pdata.location = location;
-}
-
-static int efm32_spi_probe(struct platform_device *pdev)
-{
- struct efm32_spi_ddata *ddata;
- struct resource *res;
- int ret;
- struct spi_master *master;
- struct device_node *np = pdev->dev.of_node;
-
- if (!np)
- return -EINVAL;
-
- master = spi_alloc_master(&pdev->dev, sizeof(*ddata));
- if (!master) {
- dev_dbg(&pdev->dev,
- "failed to allocate spi master controller\n");
- return -ENOMEM;
- }
- platform_set_drvdata(pdev, master);
-
- master->dev.of_node = pdev->dev.of_node;
-
- master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
- master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16);
- master->use_gpio_descriptors = true;
-
- ddata = spi_master_get_devdata(master);
-
- ddata->bitbang.master = master;
- ddata->bitbang.setup_transfer = efm32_spi_setup_transfer;
- ddata->bitbang.txrx_bufs = efm32_spi_txrx_bufs;
-
- spin_lock_init(&ddata->lock);
- init_completion(&ddata->done);
-
- ddata->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(ddata->clk)) {
- ret = PTR_ERR(ddata->clk);
- dev_err(&pdev->dev, "failed to get clock: %d\n", ret);
- goto err;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENODEV;
- dev_err(&pdev->dev, "failed to determine base address\n");
- goto err;
- }
-
- if (resource_size(res) < 0x60) {
- ret = -EINVAL;
- dev_err(&pdev->dev, "memory resource too small\n");
- goto err;
- }
-
- ddata->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(ddata->base)) {
- ret = PTR_ERR(ddata->base);
- goto err;
- }
-
- ret = platform_get_irq(pdev, 0);
- if (ret <= 0)
- goto err;
-
- ddata->rxirq = ret;
-
- ret = platform_get_irq(pdev, 1);
- if (ret <= 0)
- ret = ddata->rxirq + 1;
-
- ddata->txirq = ret;
-
- ret = clk_prepare_enable(ddata->clk);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to enable clock (%d)\n", ret);
- goto err;
- }
-
- efm32_spi_probe_dt(pdev, master, ddata);
-
- efm32_spi_write32(ddata, 0, REG_IEN);
- efm32_spi_write32(ddata, REG_ROUTE_TXPEN | REG_ROUTE_RXPEN |
- REG_ROUTE_CLKPEN |
- REG_ROUTE_LOCATION(ddata->pdata.location), REG_ROUTE);
-
- ret = request_irq(ddata->rxirq, efm32_spi_rxirq,
- 0, DRIVER_NAME " rx", ddata);
- if (ret) {
- dev_err(&pdev->dev, "failed to register rxirq (%d)\n", ret);
- goto err_disable_clk;
- }
-
- ret = request_irq(ddata->txirq, efm32_spi_txirq,
- 0, DRIVER_NAME " tx", ddata);
- if (ret) {
- dev_err(&pdev->dev, "failed to register txirq (%d)\n", ret);
- goto err_free_rx_irq;
- }
-
- ret = spi_bitbang_start(&ddata->bitbang);
- if (ret) {
- dev_err(&pdev->dev, "spi_bitbang_start failed (%d)\n", ret);
-
- free_irq(ddata->txirq, ddata);
-err_free_rx_irq:
- free_irq(ddata->rxirq, ddata);
-err_disable_clk:
- clk_disable_unprepare(ddata->clk);
-err:
- spi_master_put(master);
- }
-
- return ret;
-}
-
-static int efm32_spi_remove(struct platform_device *pdev)
-{
- struct spi_master *master = platform_get_drvdata(pdev);
- struct efm32_spi_ddata *ddata = spi_master_get_devdata(master);
-
- spi_bitbang_stop(&ddata->bitbang);
-
- efm32_spi_write32(ddata, 0, REG_IEN);
-
- free_irq(ddata->txirq, ddata);
- free_irq(ddata->rxirq, ddata);
- clk_disable_unprepare(ddata->clk);
- spi_master_put(master);
-
- return 0;
-}
-
-static const struct of_device_id efm32_spi_dt_ids[] = {
- {
- .compatible = "energymicro,efm32-spi",
- }, {
- /* doesn't follow the "vendor,device" scheme, don't use */
- .compatible = "efm32,spi",
- }, {
- /* sentinel */
- }
-};
-MODULE_DEVICE_TABLE(of, efm32_spi_dt_ids);
-
-static struct platform_driver efm32_spi_driver = {
- .probe = efm32_spi_probe,
- .remove = efm32_spi_remove,
-
- .driver = {
- .name = DRIVER_NAME,
- .of_match_table = efm32_spi_dt_ids,
- },
-};
-module_platform_driver(efm32_spi_driver);
-
-MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");
-MODULE_DESCRIPTION("EFM32 SPI driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/include/linux/platform_data/efm32-spi.h b/include/linux/platform_data/efm32-spi.h
deleted file mode 100644
index a2c56fcd0534..000000000000
--- a/include/linux/platform_data/efm32-spi.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __LINUX_PLATFORM_DATA_EFM32_SPI_H__
-#define __LINUX_PLATFORM_DATA_EFM32_SPI_H__
-
-#include <linux/types.h>
-
-/**
- * struct efm32_spi_pdata
- * @location: pinmux location for the I/O pins (to be written to the ROUTE
- * register)
- */
-struct efm32_spi_pdata {
- u8 location;
-};
-#endif /* ifndef __LINUX_PLATFORM_DATA_EFM32_SPI_H__ */
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v2 5/7] i2c: Drop unused efm32 bus driver
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
` (3 preceding siblings ...)
2021-01-15 15:51 ` [PATCH v2 4/7] spi: Drop unused efm32 bus driver Uwe Kleine-König
@ 2021-01-15 15:51 ` Uwe Kleine-König
2021-01-17 11:09 ` Wolfram Sang
2021-01-15 15:51 ` [PATCH v2 6/7] tty: serial: Drop unused efm32 serial driver Uwe Kleine-König
` (2 subsequent siblings)
7 siblings, 1 reply; 15+ messages in thread
From: Uwe Kleine-König @ 2021-01-15 15:51 UTC (permalink / raw)
To: Arnd Bergmann, Olof Johansson, Wolfram Sang
Cc: soc, kernel, linux-arm-kernel, linux-i2c
Support for this machine was just removed, so drop the now unused i2c
bus driver, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
drivers/i2c/busses/Kconfig | 7 -
drivers/i2c/busses/Makefile | 1 -
drivers/i2c/busses/i2c-efm32.c | 469 ---------------------------------
3 files changed, 477 deletions(-)
delete mode 100644 drivers/i2c/busses/i2c-efm32.c
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index d4d60ad0eda0..fd919f9339d6 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -586,13 +586,6 @@ config I2C_DIGICOLOR
This driver can also be built as a module. If so, the module
will be called i2c-digicolor.
-config I2C_EFM32
- tristate "EFM32 I2C controller"
- depends on ARCH_EFM32 || COMPILE_TEST
- help
- This driver supports the i2c block found in Energy Micro's EFM32
- SoCs.
-
config I2C_EG20T
tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) I2C"
depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 683c49faca05..894ff95885b8 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -58,7 +58,6 @@ i2c-designware-platform-$(CONFIG_I2C_DESIGNWARE_BAYTRAIL) += i2c-designware-bayt
obj-$(CONFIG_I2C_DESIGNWARE_PCI) += i2c-designware-pci.o
i2c-designware-pci-y := i2c-designware-pcidrv.o
obj-$(CONFIG_I2C_DIGICOLOR) += i2c-digicolor.o
-obj-$(CONFIG_I2C_EFM32) += i2c-efm32.o
obj-$(CONFIG_I2C_EG20T) += i2c-eg20t.o
obj-$(CONFIG_I2C_EMEV2) += i2c-emev2.o
obj-$(CONFIG_I2C_EXYNOS5) += i2c-exynos5.o
diff --git a/drivers/i2c/busses/i2c-efm32.c b/drivers/i2c/busses/i2c-efm32.c
deleted file mode 100644
index f6e13ceeb2b3..000000000000
--- a/drivers/i2c/busses/i2c-efm32.c
+++ /dev/null
@@ -1,469 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2014 Uwe Kleine-Koenig for Pengutronix
- */
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/i2c.h>
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-
-#define DRIVER_NAME "efm32-i2c"
-
-#define MASK_VAL(mask, val) ((val << __ffs(mask)) & mask)
-
-#define REG_CTRL 0x00
-#define REG_CTRL_EN 0x00001
-#define REG_CTRL_SLAVE 0x00002
-#define REG_CTRL_AUTOACK 0x00004
-#define REG_CTRL_AUTOSE 0x00008
-#define REG_CTRL_AUTOSN 0x00010
-#define REG_CTRL_ARBDIS 0x00020
-#define REG_CTRL_GCAMEN 0x00040
-#define REG_CTRL_CLHR__MASK 0x00300
-#define REG_CTRL_BITO__MASK 0x03000
-#define REG_CTRL_BITO_OFF 0x00000
-#define REG_CTRL_BITO_40PCC 0x01000
-#define REG_CTRL_BITO_80PCC 0x02000
-#define REG_CTRL_BITO_160PCC 0x03000
-#define REG_CTRL_GIBITO 0x08000
-#define REG_CTRL_CLTO__MASK 0x70000
-#define REG_CTRL_CLTO_OFF 0x00000
-
-#define REG_CMD 0x04
-#define REG_CMD_START 0x00001
-#define REG_CMD_STOP 0x00002
-#define REG_CMD_ACK 0x00004
-#define REG_CMD_NACK 0x00008
-#define REG_CMD_CONT 0x00010
-#define REG_CMD_ABORT 0x00020
-#define REG_CMD_CLEARTX 0x00040
-#define REG_CMD_CLEARPC 0x00080
-
-#define REG_STATE 0x08
-#define REG_STATE_BUSY 0x00001
-#define REG_STATE_MASTER 0x00002
-#define REG_STATE_TRANSMITTER 0x00004
-#define REG_STATE_NACKED 0x00008
-#define REG_STATE_BUSHOLD 0x00010
-#define REG_STATE_STATE__MASK 0x000e0
-#define REG_STATE_STATE_IDLE 0x00000
-#define REG_STATE_STATE_WAIT 0x00020
-#define REG_STATE_STATE_START 0x00040
-#define REG_STATE_STATE_ADDR 0x00060
-#define REG_STATE_STATE_ADDRACK 0x00080
-#define REG_STATE_STATE_DATA 0x000a0
-#define REG_STATE_STATE_DATAACK 0x000c0
-
-#define REG_STATUS 0x0c
-#define REG_STATUS_PSTART 0x00001
-#define REG_STATUS_PSTOP 0x00002
-#define REG_STATUS_PACK 0x00004
-#define REG_STATUS_PNACK 0x00008
-#define REG_STATUS_PCONT 0x00010
-#define REG_STATUS_PABORT 0x00020
-#define REG_STATUS_TXC 0x00040
-#define REG_STATUS_TXBL 0x00080
-#define REG_STATUS_RXDATAV 0x00100
-
-#define REG_CLKDIV 0x10
-#define REG_CLKDIV_DIV__MASK 0x001ff
-#define REG_CLKDIV_DIV(div) MASK_VAL(REG_CLKDIV_DIV__MASK, (div))
-
-#define REG_SADDR 0x14
-#define REG_SADDRMASK 0x18
-#define REG_RXDATA 0x1c
-#define REG_RXDATAP 0x20
-#define REG_TXDATA 0x24
-#define REG_IF 0x28
-#define REG_IF_START 0x00001
-#define REG_IF_RSTART 0x00002
-#define REG_IF_ADDR 0x00004
-#define REG_IF_TXC 0x00008
-#define REG_IF_TXBL 0x00010
-#define REG_IF_RXDATAV 0x00020
-#define REG_IF_ACK 0x00040
-#define REG_IF_NACK 0x00080
-#define REG_IF_MSTOP 0x00100
-#define REG_IF_ARBLOST 0x00200
-#define REG_IF_BUSERR 0x00400
-#define REG_IF_BUSHOLD 0x00800
-#define REG_IF_TXOF 0x01000
-#define REG_IF_RXUF 0x02000
-#define REG_IF_BITO 0x04000
-#define REG_IF_CLTO 0x08000
-#define REG_IF_SSTOP 0x10000
-
-#define REG_IFS 0x2c
-#define REG_IFC 0x30
-#define REG_IFC__MASK 0x1ffcf
-
-#define REG_IEN 0x34
-
-#define REG_ROUTE 0x38
-#define REG_ROUTE_SDAPEN 0x00001
-#define REG_ROUTE_SCLPEN 0x00002
-#define REG_ROUTE_LOCATION__MASK 0x00700
-#define REG_ROUTE_LOCATION(n) MASK_VAL(REG_ROUTE_LOCATION__MASK, (n))
-
-struct efm32_i2c_ddata {
- struct i2c_adapter adapter;
-
- struct clk *clk;
- void __iomem *base;
- unsigned int irq;
- u8 location;
- unsigned long frequency;
-
- /* transfer data */
- struct completion done;
- struct i2c_msg *msgs;
- size_t num_msgs;
- size_t current_word, current_msg;
- int retval;
-};
-
-static u32 efm32_i2c_read32(struct efm32_i2c_ddata *ddata, unsigned offset)
-{
- return readl(ddata->base + offset);
-}
-
-static void efm32_i2c_write32(struct efm32_i2c_ddata *ddata,
- unsigned offset, u32 value)
-{
- writel(value, ddata->base + offset);
-}
-
-static void efm32_i2c_send_next_msg(struct efm32_i2c_ddata *ddata)
-{
- struct i2c_msg *cur_msg = &ddata->msgs[ddata->current_msg];
-
- efm32_i2c_write32(ddata, REG_CMD, REG_CMD_START);
- efm32_i2c_write32(ddata, REG_TXDATA, i2c_8bit_addr_from_msg(cur_msg));
-}
-
-static void efm32_i2c_send_next_byte(struct efm32_i2c_ddata *ddata)
-{
- struct i2c_msg *cur_msg = &ddata->msgs[ddata->current_msg];
-
- if (ddata->current_word >= cur_msg->len) {
- /* cur_msg completely transferred */
- ddata->current_word = 0;
- ddata->current_msg += 1;
-
- if (ddata->current_msg >= ddata->num_msgs) {
- efm32_i2c_write32(ddata, REG_CMD, REG_CMD_STOP);
- complete(&ddata->done);
- } else {
- efm32_i2c_send_next_msg(ddata);
- }
- } else {
- efm32_i2c_write32(ddata, REG_TXDATA,
- cur_msg->buf[ddata->current_word++]);
- }
-}
-
-static void efm32_i2c_recv_next_byte(struct efm32_i2c_ddata *ddata)
-{
- struct i2c_msg *cur_msg = &ddata->msgs[ddata->current_msg];
-
- cur_msg->buf[ddata->current_word] = efm32_i2c_read32(ddata, REG_RXDATA);
- ddata->current_word += 1;
- if (ddata->current_word >= cur_msg->len) {
- /* cur_msg completely transferred */
- ddata->current_word = 0;
- ddata->current_msg += 1;
-
- efm32_i2c_write32(ddata, REG_CMD, REG_CMD_NACK);
-
- if (ddata->current_msg >= ddata->num_msgs) {
- efm32_i2c_write32(ddata, REG_CMD, REG_CMD_STOP);
- complete(&ddata->done);
- } else {
- efm32_i2c_send_next_msg(ddata);
- }
- } else {
- efm32_i2c_write32(ddata, REG_CMD, REG_CMD_ACK);
- }
-}
-
-static irqreturn_t efm32_i2c_irq(int irq, void *dev_id)
-{
- struct efm32_i2c_ddata *ddata = dev_id;
- struct i2c_msg *cur_msg = &ddata->msgs[ddata->current_msg];
- u32 irqflag = efm32_i2c_read32(ddata, REG_IF);
- u32 state = efm32_i2c_read32(ddata, REG_STATE);
-
- efm32_i2c_write32(ddata, REG_IFC, irqflag & REG_IFC__MASK);
-
- switch (state & REG_STATE_STATE__MASK) {
- case REG_STATE_STATE_IDLE:
- /* arbitration lost? */
- ddata->retval = -EAGAIN;
- complete(&ddata->done);
- break;
- case REG_STATE_STATE_WAIT:
- /*
- * huh, this shouldn't happen.
- * Reset hardware state and get out
- */
- ddata->retval = -EIO;
- efm32_i2c_write32(ddata, REG_CMD,
- REG_CMD_STOP | REG_CMD_ABORT |
- REG_CMD_CLEARTX | REG_CMD_CLEARPC);
- complete(&ddata->done);
- break;
- case REG_STATE_STATE_START:
- /* "caller" is expected to send an address */
- break;
- case REG_STATE_STATE_ADDR:
- /* wait for Ack or NAck of slave */
- break;
- case REG_STATE_STATE_ADDRACK:
- if (state & REG_STATE_NACKED) {
- efm32_i2c_write32(ddata, REG_CMD, REG_CMD_STOP);
- ddata->retval = -ENXIO;
- complete(&ddata->done);
- } else if (cur_msg->flags & I2C_M_RD) {
- /* wait for slave to send first data byte */
- } else {
- efm32_i2c_send_next_byte(ddata);
- }
- break;
- case REG_STATE_STATE_DATA:
- if (cur_msg->flags & I2C_M_RD) {
- efm32_i2c_recv_next_byte(ddata);
- } else {
- /* wait for Ack or Nack of slave */
- }
- break;
- case REG_STATE_STATE_DATAACK:
- if (state & REG_STATE_NACKED) {
- efm32_i2c_write32(ddata, REG_CMD, REG_CMD_STOP);
- complete(&ddata->done);
- } else {
- efm32_i2c_send_next_byte(ddata);
- }
- }
-
- return IRQ_HANDLED;
-}
-
-static int efm32_i2c_master_xfer(struct i2c_adapter *adap,
- struct i2c_msg *msgs, int num)
-{
- struct efm32_i2c_ddata *ddata = i2c_get_adapdata(adap);
- int ret;
-
- if (ddata->msgs)
- return -EBUSY;
-
- ddata->msgs = msgs;
- ddata->num_msgs = num;
- ddata->current_word = 0;
- ddata->current_msg = 0;
- ddata->retval = -EIO;
-
- reinit_completion(&ddata->done);
-
- dev_dbg(&ddata->adapter.dev, "state: %08x, status: %08x\n",
- efm32_i2c_read32(ddata, REG_STATE),
- efm32_i2c_read32(ddata, REG_STATUS));
-
- efm32_i2c_send_next_msg(ddata);
-
- wait_for_completion(&ddata->done);
-
- if (ddata->current_msg >= ddata->num_msgs)
- ret = ddata->num_msgs;
- else
- ret = ddata->retval;
-
- return ret;
-}
-
-static u32 efm32_i2c_functionality(struct i2c_adapter *adap)
-{
- return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
-}
-
-static const struct i2c_algorithm efm32_i2c_algo = {
- .master_xfer = efm32_i2c_master_xfer,
- .functionality = efm32_i2c_functionality,
-};
-
-static u32 efm32_i2c_get_configured_location(struct efm32_i2c_ddata *ddata)
-{
- u32 reg = efm32_i2c_read32(ddata, REG_ROUTE);
-
- return (reg & REG_ROUTE_LOCATION__MASK) >>
- __ffs(REG_ROUTE_LOCATION__MASK);
-}
-
-static int efm32_i2c_probe(struct platform_device *pdev)
-{
- struct efm32_i2c_ddata *ddata;
- struct resource *res;
- unsigned long rate;
- struct device_node *np = pdev->dev.of_node;
- u32 location, frequency;
- int ret;
- u32 clkdiv;
-
- ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
- if (!ddata)
- return -ENOMEM;
- platform_set_drvdata(pdev, ddata);
-
- init_completion(&ddata->done);
- strlcpy(ddata->adapter.name, pdev->name, sizeof(ddata->adapter.name));
- ddata->adapter.owner = THIS_MODULE;
- ddata->adapter.algo = &efm32_i2c_algo;
- ddata->adapter.dev.parent = &pdev->dev;
- ddata->adapter.dev.of_node = pdev->dev.of_node;
- i2c_set_adapdata(&ddata->adapter, ddata);
-
- ddata->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(ddata->clk)) {
- ret = PTR_ERR(ddata->clk);
- dev_err(&pdev->dev, "failed to get clock: %d\n", ret);
- return ret;
- }
-
- ddata->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
- if (IS_ERR(ddata->base))
- return PTR_ERR(ddata->base);
-
- if (resource_size(res) < 0x42) {
- dev_err(&pdev->dev, "memory resource too small\n");
- return -EINVAL;
- }
-
- ret = platform_get_irq(pdev, 0);
- if (ret <= 0) {
- if (!ret)
- ret = -EINVAL;
- return ret;
- }
-
- ddata->irq = ret;
-
- ret = clk_prepare_enable(ddata->clk);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to enable clock (%d)\n", ret);
- return ret;
- }
-
-
- ret = of_property_read_u32(np, "energymicro,location", &location);
-
- if (ret)
- /* fall back to wrongly namespaced property */
- ret = of_property_read_u32(np, "efm32,location", &location);
-
- if (!ret) {
- dev_dbg(&pdev->dev, "using location %u\n", location);
- } else {
- /* default to location configured in hardware */
- location = efm32_i2c_get_configured_location(ddata);
-
- dev_info(&pdev->dev, "fall back to location %u\n", location);
- }
-
- ddata->location = location;
-
- ret = of_property_read_u32(np, "clock-frequency", &frequency);
- if (!ret) {
- dev_dbg(&pdev->dev, "using frequency %u\n", frequency);
- } else {
- frequency = I2C_MAX_STANDARD_MODE_FREQ;
- dev_info(&pdev->dev, "defaulting to 100 kHz\n");
- }
- ddata->frequency = frequency;
-
- rate = clk_get_rate(ddata->clk);
- if (!rate) {
- dev_err(&pdev->dev, "there is no input clock available\n");
- ret = -EINVAL;
- goto err_disable_clk;
- }
- clkdiv = DIV_ROUND_UP(rate, 8 * ddata->frequency) - 1;
- if (clkdiv >= 0x200) {
- dev_err(&pdev->dev,
- "input clock too fast (%lu) to divide down to bus freq (%lu)",
- rate, ddata->frequency);
- ret = -EINVAL;
- goto err_disable_clk;
- }
-
- dev_dbg(&pdev->dev, "input clock = %lu, bus freq = %lu, clkdiv = %lu\n",
- rate, ddata->frequency, (unsigned long)clkdiv);
- efm32_i2c_write32(ddata, REG_CLKDIV, REG_CLKDIV_DIV(clkdiv));
-
- efm32_i2c_write32(ddata, REG_ROUTE, REG_ROUTE_SDAPEN |
- REG_ROUTE_SCLPEN |
- REG_ROUTE_LOCATION(ddata->location));
-
- efm32_i2c_write32(ddata, REG_CTRL, REG_CTRL_EN |
- REG_CTRL_BITO_160PCC | 0 * REG_CTRL_GIBITO);
-
- efm32_i2c_write32(ddata, REG_IFC, REG_IFC__MASK);
- efm32_i2c_write32(ddata, REG_IEN, REG_IF_TXC | REG_IF_ACK | REG_IF_NACK
- | REG_IF_ARBLOST | REG_IF_BUSERR | REG_IF_RXDATAV);
-
- /* to make bus idle */
- efm32_i2c_write32(ddata, REG_CMD, REG_CMD_ABORT);
-
- ret = request_irq(ddata->irq, efm32_i2c_irq, 0, DRIVER_NAME, ddata);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to request irq (%d)\n", ret);
- goto err_disable_clk;
- }
-
- ret = i2c_add_adapter(&ddata->adapter);
- if (ret) {
- free_irq(ddata->irq, ddata);
-
-err_disable_clk:
- clk_disable_unprepare(ddata->clk);
- }
- return ret;
-}
-
-static int efm32_i2c_remove(struct platform_device *pdev)
-{
- struct efm32_i2c_ddata *ddata = platform_get_drvdata(pdev);
-
- i2c_del_adapter(&ddata->adapter);
- free_irq(ddata->irq, ddata);
- clk_disable_unprepare(ddata->clk);
-
- return 0;
-}
-
-static const struct of_device_id efm32_i2c_dt_ids[] = {
- {
- .compatible = "energymicro,efm32-i2c",
- }, {
- /* sentinel */
- }
-};
-MODULE_DEVICE_TABLE(of, efm32_i2c_dt_ids);
-
-static struct platform_driver efm32_i2c_driver = {
- .probe = efm32_i2c_probe,
- .remove = efm32_i2c_remove,
-
- .driver = {
- .name = DRIVER_NAME,
- .of_match_table = efm32_i2c_dt_ids,
- },
-};
-module_platform_driver(efm32_i2c_driver);
-
-MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");
-MODULE_DESCRIPTION("EFM32 i2c driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:" DRIVER_NAME);
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v2 6/7] tty: serial: Drop unused efm32 serial driver
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
` (4 preceding siblings ...)
2021-01-15 15:51 ` [PATCH v2 5/7] i2c: " Uwe Kleine-König
@ 2021-01-15 15:51 ` Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 7/7] MAINTAINERS: Remove deleted platform efm32 Uwe Kleine-König
2021-01-15 16:44 ` [PATCH v2 0/7] Remove ARM " Arnd Bergmann
7 siblings, 0 replies; 15+ messages in thread
From: Uwe Kleine-König @ 2021-01-15 15:51 UTC (permalink / raw)
To: Arnd Bergmann, Olof Johansson, Greg Kroah-Hartman, Jiri Slaby
Cc: soc, kernel, linux-arm-kernel, linux-serial
Support for this machine was just removed, so drop the now unused UART
driver, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
drivers/tty/serial/Kconfig | 13 -
drivers/tty/serial/Makefile | 1 -
drivers/tty/serial/efm32-uart.c | 852 -----------------------
include/linux/platform_data/efm32-uart.h | 19 -
include/uapi/linux/serial_core.h | 3 -
5 files changed, 888 deletions(-)
delete mode 100644 drivers/tty/serial/efm32-uart.c
delete mode 100644 include/linux/platform_data/efm32-uart.h
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 34a2899e69c0..83f6ca4bf210 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1295,14 +1295,6 @@ config SERIAL_AR933X_NR_UARTS
Set this to the number of serial ports you want the driver
to support.
-config SERIAL_EFM32_UART
- tristate "EFM32 UART/USART port"
- depends on ARM && (ARCH_EFM32 || COMPILE_TEST)
- select SERIAL_CORE
- help
- This driver support the USART and UART ports on
- Energy Micro's efm32 SoCs.
-
config SERIAL_MPS2_UART_CONSOLE
bool "MPS2 UART console support"
depends on SERIAL_MPS2_UART
@@ -1316,11 +1308,6 @@ config SERIAL_MPS2_UART
help
This driver support the UART ports on ARM MPS2.
-config SERIAL_EFM32_UART_CONSOLE
- bool "EFM32 UART/USART console support"
- depends on SERIAL_EFM32_UART=y
- select SERIAL_CORE_CONSOLE
-
config SERIAL_ARC
tristate "ARC UART driver support"
select SERIAL_CORE
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index b85d53f9e9ff..ec2b74091f0c 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -73,7 +73,6 @@ obj-$(CONFIG_SERIAL_SIRFSOC) += sirfsoc_uart.o
obj-$(CONFIG_SERIAL_TEGRA) += serial-tegra.o
obj-$(CONFIG_SERIAL_TEGRA_TCU) += tegra-tcu.o
obj-$(CONFIG_SERIAL_AR933X) += ar933x_uart.o
-obj-$(CONFIG_SERIAL_EFM32_UART) += efm32-uart.o
obj-$(CONFIG_SERIAL_ARC) += arc_uart.o
obj-$(CONFIG_SERIAL_RP2) += rp2.o
obj-$(CONFIG_SERIAL_FSL_LPUART) += fsl_lpuart.o
diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
deleted file mode 100644
index f12f29cf4f31..000000000000
--- a/drivers/tty/serial/efm32-uart.c
+++ /dev/null
@@ -1,852 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/serial_core.h>
-#include <linux/tty_flip.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-
-#include <linux/platform_data/efm32-uart.h>
-
-#define DRIVER_NAME "efm32-uart"
-#define DEV_NAME "ttyefm"
-
-#define UARTn_CTRL 0x00
-#define UARTn_CTRL_SYNC 0x0001
-#define UARTn_CTRL_TXBIL 0x1000
-
-#define UARTn_FRAME 0x04
-#define UARTn_FRAME_DATABITS__MASK 0x000f
-#define UARTn_FRAME_DATABITS(n) ((n) - 3)
-#define UARTn_FRAME_PARITY__MASK 0x0300
-#define UARTn_FRAME_PARITY_NONE 0x0000
-#define UARTn_FRAME_PARITY_EVEN 0x0200
-#define UARTn_FRAME_PARITY_ODD 0x0300
-#define UARTn_FRAME_STOPBITS_HALF 0x0000
-#define UARTn_FRAME_STOPBITS_ONE 0x1000
-#define UARTn_FRAME_STOPBITS_TWO 0x3000
-
-#define UARTn_CMD 0x0c
-#define UARTn_CMD_RXEN 0x0001
-#define UARTn_CMD_RXDIS 0x0002
-#define UARTn_CMD_TXEN 0x0004
-#define UARTn_CMD_TXDIS 0x0008
-
-#define UARTn_STATUS 0x10
-#define UARTn_STATUS_TXENS 0x0002
-#define UARTn_STATUS_TXC 0x0020
-#define UARTn_STATUS_TXBL 0x0040
-#define UARTn_STATUS_RXDATAV 0x0080
-
-#define UARTn_CLKDIV 0x14
-
-#define UARTn_RXDATAX 0x18
-#define UARTn_RXDATAX_RXDATA__MASK 0x01ff
-#define UARTn_RXDATAX_PERR 0x4000
-#define UARTn_RXDATAX_FERR 0x8000
-/*
- * This is a software only flag used for ignore_status_mask and
- * read_status_mask! It's used for breaks that the hardware doesn't report
- * explicitly.
- */
-#define SW_UARTn_RXDATAX_BERR 0x2000
-
-#define UARTn_TXDATA 0x34
-
-#define UARTn_IF 0x40
-#define UARTn_IF_TXC 0x0001
-#define UARTn_IF_TXBL 0x0002
-#define UARTn_IF_RXDATAV 0x0004
-#define UARTn_IF_RXOF 0x0010
-
-#define UARTn_IFS 0x44
-#define UARTn_IFC 0x48
-#define UARTn_IEN 0x4c
-
-#define UARTn_ROUTE 0x54
-#define UARTn_ROUTE_LOCATION__MASK 0x0700
-#define UARTn_ROUTE_LOCATION(n) (((n) << 8) & UARTn_ROUTE_LOCATION__MASK)
-#define UARTn_ROUTE_RXPEN 0x0001
-#define UARTn_ROUTE_TXPEN 0x0002
-
-struct efm32_uart_port {
- struct uart_port port;
- unsigned int txirq;
- struct clk *clk;
- struct efm32_uart_pdata pdata;
-};
-#define to_efm_port(_port) container_of(_port, struct efm32_uart_port, port)
-#define efm_debug(efm_port, format, arg...) \
- dev_dbg(efm_port->port.dev, format, ##arg)
-
-static void efm32_uart_write32(struct efm32_uart_port *efm_port,
- u32 value, unsigned offset)
-{
- writel_relaxed(value, efm_port->port.membase + offset);
-}
-
-static u32 efm32_uart_read32(struct efm32_uart_port *efm_port,
- unsigned offset)
-{
- return readl_relaxed(efm_port->port.membase + offset);
-}
-
-static unsigned int efm32_uart_tx_empty(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- u32 status = efm32_uart_read32(efm_port, UARTn_STATUS);
-
- if (status & UARTn_STATUS_TXC)
- return TIOCSER_TEMT;
- else
- return 0;
-}
-
-static void efm32_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
- /* sorry, neither handshaking lines nor loop functionallity */
-}
-
-static unsigned int efm32_uart_get_mctrl(struct uart_port *port)
-{
- /* sorry, no handshaking lines available */
- return TIOCM_CAR | TIOCM_CTS | TIOCM_DSR;
-}
-
-static void efm32_uart_stop_tx(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- u32 ien = efm32_uart_read32(efm_port, UARTn_IEN);
-
- efm32_uart_write32(efm_port, UARTn_CMD_TXDIS, UARTn_CMD);
- ien &= ~(UARTn_IF_TXC | UARTn_IF_TXBL);
- efm32_uart_write32(efm_port, ien, UARTn_IEN);
-}
-
-static void efm32_uart_tx_chars(struct efm32_uart_port *efm_port)
-{
- struct uart_port *port = &efm_port->port;
- struct circ_buf *xmit = &port->state->xmit;
-
- while (efm32_uart_read32(efm_port, UARTn_STATUS) &
- UARTn_STATUS_TXBL) {
- if (port->x_char) {
- port->icount.tx++;
- efm32_uart_write32(efm_port, port->x_char,
- UARTn_TXDATA);
- port->x_char = 0;
- continue;
- }
- if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) {
- port->icount.tx++;
- efm32_uart_write32(efm_port, xmit->buf[xmit->tail],
- UARTn_TXDATA);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- } else
- break;
- }
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(port);
-
- if (!port->x_char && uart_circ_empty(xmit) &&
- efm32_uart_read32(efm_port, UARTn_STATUS) &
- UARTn_STATUS_TXC)
- efm32_uart_stop_tx(port);
-}
-
-static void efm32_uart_start_tx(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- u32 ien;
-
- efm32_uart_write32(efm_port,
- UARTn_IF_TXBL | UARTn_IF_TXC, UARTn_IFC);
- ien = efm32_uart_read32(efm_port, UARTn_IEN);
- efm32_uart_write32(efm_port,
- ien | UARTn_IF_TXBL | UARTn_IF_TXC, UARTn_IEN);
- efm32_uart_write32(efm_port, UARTn_CMD_TXEN, UARTn_CMD);
-
- efm32_uart_tx_chars(efm_port);
-}
-
-static void efm32_uart_stop_rx(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
-
- efm32_uart_write32(efm_port, UARTn_CMD_RXDIS, UARTn_CMD);
-}
-
-static void efm32_uart_break_ctl(struct uart_port *port, int ctl)
-{
- /* not possible without fiddling with gpios */
-}
-
-static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port)
-{
- struct uart_port *port = &efm_port->port;
-
- while (efm32_uart_read32(efm_port, UARTn_STATUS) &
- UARTn_STATUS_RXDATAV) {
- u32 rxdata = efm32_uart_read32(efm_port, UARTn_RXDATAX);
- int flag = 0;
-
- /*
- * This is a reserved bit and I only saw it read as 0. But to be
- * sure not to be confused too much by new devices adhere to the
- * warning in the reference manual that reserved bits might
- * read as 1 in the future.
- */
- rxdata &= ~SW_UARTn_RXDATAX_BERR;
-
- port->icount.rx++;
-
- if ((rxdata & UARTn_RXDATAX_FERR) &&
- !(rxdata & UARTn_RXDATAX_RXDATA__MASK)) {
- rxdata |= SW_UARTn_RXDATAX_BERR;
- port->icount.brk++;
- if (uart_handle_break(port))
- continue;
- } else if (rxdata & UARTn_RXDATAX_PERR)
- port->icount.parity++;
- else if (rxdata & UARTn_RXDATAX_FERR)
- port->icount.frame++;
-
- rxdata &= port->read_status_mask;
-
- if (rxdata & SW_UARTn_RXDATAX_BERR)
- flag = TTY_BREAK;
- else if (rxdata & UARTn_RXDATAX_PERR)
- flag = TTY_PARITY;
- else if (rxdata & UARTn_RXDATAX_FERR)
- flag = TTY_FRAME;
- else if (uart_handle_sysrq_char(port,
- rxdata & UARTn_RXDATAX_RXDATA__MASK))
- continue;
-
- if ((rxdata & port->ignore_status_mask) == 0)
- tty_insert_flip_char(&port->state->port,
- rxdata & UARTn_RXDATAX_RXDATA__MASK, flag);
- }
-}
-
-static irqreturn_t efm32_uart_rxirq(int irq, void *data)
-{
- struct efm32_uart_port *efm_port = data;
- u32 irqflag = efm32_uart_read32(efm_port, UARTn_IF);
- int handled = IRQ_NONE;
- struct uart_port *port = &efm_port->port;
- struct tty_port *tport = &port->state->port;
-
- spin_lock(&port->lock);
-
- if (irqflag & UARTn_IF_RXDATAV) {
- efm32_uart_write32(efm_port, UARTn_IF_RXDATAV, UARTn_IFC);
- efm32_uart_rx_chars(efm_port);
-
- handled = IRQ_HANDLED;
- }
-
- if (irqflag & UARTn_IF_RXOF) {
- efm32_uart_write32(efm_port, UARTn_IF_RXOF, UARTn_IFC);
- port->icount.overrun++;
- tty_insert_flip_char(tport, 0, TTY_OVERRUN);
-
- handled = IRQ_HANDLED;
- }
-
- spin_unlock(&port->lock);
-
- tty_flip_buffer_push(tport);
-
- return handled;
-}
-
-static irqreturn_t efm32_uart_txirq(int irq, void *data)
-{
- struct efm32_uart_port *efm_port = data;
- u32 irqflag = efm32_uart_read32(efm_port, UARTn_IF);
-
- /* TXBL doesn't need to be cleared */
- if (irqflag & UARTn_IF_TXC)
- efm32_uart_write32(efm_port, UARTn_IF_TXC, UARTn_IFC);
-
- if (irqflag & (UARTn_IF_TXC | UARTn_IF_TXBL)) {
- efm32_uart_tx_chars(efm_port);
- return IRQ_HANDLED;
- } else
- return IRQ_NONE;
-}
-
-static int efm32_uart_startup(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- int ret;
-
- ret = clk_enable(efm_port->clk);
- if (ret) {
- efm_debug(efm_port, "failed to enable clk\n");
- goto err_clk_enable;
- }
- port->uartclk = clk_get_rate(efm_port->clk);
-
- /* Enable pins at configured location */
- efm32_uart_write32(efm_port,
- UARTn_ROUTE_LOCATION(efm_port->pdata.location) |
- UARTn_ROUTE_RXPEN | UARTn_ROUTE_TXPEN,
- UARTn_ROUTE);
-
- ret = request_irq(port->irq, efm32_uart_rxirq, 0,
- DRIVER_NAME, efm_port);
- if (ret) {
- efm_debug(efm_port, "failed to register rxirq\n");
- goto err_request_irq_rx;
- }
-
- /* disable all irqs */
- efm32_uart_write32(efm_port, 0, UARTn_IEN);
-
- ret = request_irq(efm_port->txirq, efm32_uart_txirq, 0,
- DRIVER_NAME, efm_port);
- if (ret) {
- efm_debug(efm_port, "failed to register txirq\n");
- free_irq(port->irq, efm_port);
-err_request_irq_rx:
-
- clk_disable(efm_port->clk);
- } else {
- efm32_uart_write32(efm_port,
- UARTn_IF_RXDATAV | UARTn_IF_RXOF, UARTn_IEN);
- efm32_uart_write32(efm_port, UARTn_CMD_RXEN, UARTn_CMD);
- }
-
-err_clk_enable:
- return ret;
-}
-
-static void efm32_uart_shutdown(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
-
- efm32_uart_write32(efm_port, 0, UARTn_IEN);
- free_irq(port->irq, efm_port);
-
- clk_disable(efm_port->clk);
-}
-
-static void efm32_uart_set_termios(struct uart_port *port,
- struct ktermios *new, struct ktermios *old)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- unsigned long flags;
- unsigned baud;
- u32 clkdiv;
- u32 frame = 0;
-
- /* no modem control lines */
- new->c_cflag &= ~(CRTSCTS | CMSPAR);
-
- baud = uart_get_baud_rate(port, new, old,
- DIV_ROUND_CLOSEST(port->uartclk, 16 * 8192),
- DIV_ROUND_CLOSEST(port->uartclk, 16));
-
- switch (new->c_cflag & CSIZE) {
- case CS5:
- frame |= UARTn_FRAME_DATABITS(5);
- break;
- case CS6:
- frame |= UARTn_FRAME_DATABITS(6);
- break;
- case CS7:
- frame |= UARTn_FRAME_DATABITS(7);
- break;
- case CS8:
- frame |= UARTn_FRAME_DATABITS(8);
- break;
- }
-
- if (new->c_cflag & CSTOPB)
- /* the receiver only verifies the first stop bit */
- frame |= UARTn_FRAME_STOPBITS_TWO;
- else
- frame |= UARTn_FRAME_STOPBITS_ONE;
-
- if (new->c_cflag & PARENB) {
- if (new->c_cflag & PARODD)
- frame |= UARTn_FRAME_PARITY_ODD;
- else
- frame |= UARTn_FRAME_PARITY_EVEN;
- } else
- frame |= UARTn_FRAME_PARITY_NONE;
-
- /*
- * the 6 lowest bits of CLKDIV are dc, bit 6 has value 0.25.
- * port->uartclk <= 14e6, so 4 * port->uartclk doesn't overflow.
- */
- clkdiv = (DIV_ROUND_CLOSEST(4 * port->uartclk, 16 * baud) - 4) << 6;
-
- spin_lock_irqsave(&port->lock, flags);
-
- efm32_uart_write32(efm_port,
- UARTn_CMD_TXDIS | UARTn_CMD_RXDIS, UARTn_CMD);
-
- port->read_status_mask = UARTn_RXDATAX_RXDATA__MASK;
- if (new->c_iflag & INPCK)
- port->read_status_mask |=
- UARTn_RXDATAX_FERR | UARTn_RXDATAX_PERR;
- if (new->c_iflag & (IGNBRK | BRKINT | PARMRK))
- port->read_status_mask |= SW_UARTn_RXDATAX_BERR;
-
- port->ignore_status_mask = 0;
- if (new->c_iflag & IGNPAR)
- port->ignore_status_mask |=
- UARTn_RXDATAX_FERR | UARTn_RXDATAX_PERR;
- if (new->c_iflag & IGNBRK)
- port->ignore_status_mask |= SW_UARTn_RXDATAX_BERR;
-
- uart_update_timeout(port, new->c_cflag, baud);
-
- efm32_uart_write32(efm_port, UARTn_CTRL_TXBIL, UARTn_CTRL);
- efm32_uart_write32(efm_port, frame, UARTn_FRAME);
- efm32_uart_write32(efm_port, clkdiv, UARTn_CLKDIV);
-
- efm32_uart_write32(efm_port, UARTn_CMD_TXEN | UARTn_CMD_RXEN,
- UARTn_CMD);
-
- spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static const char *efm32_uart_type(struct uart_port *port)
-{
- return port->type == PORT_EFMUART ? "efm32-uart" : NULL;
-}
-
-static void efm32_uart_release_port(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
-
- clk_unprepare(efm_port->clk);
- clk_put(efm_port->clk);
- iounmap(port->membase);
-}
-
-static int efm32_uart_request_port(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- int ret;
-
- port->membase = ioremap(port->mapbase, 60);
- if (!efm_port->port.membase) {
- ret = -ENOMEM;
- efm_debug(efm_port, "failed to remap\n");
- goto err_ioremap;
- }
-
- efm_port->clk = clk_get(port->dev, NULL);
- if (IS_ERR(efm_port->clk)) {
- ret = PTR_ERR(efm_port->clk);
- efm_debug(efm_port, "failed to get clock\n");
- goto err_clk_get;
- }
-
- ret = clk_prepare(efm_port->clk);
- if (ret) {
- clk_put(efm_port->clk);
-err_clk_get:
-
- iounmap(port->membase);
-err_ioremap:
- return ret;
- }
- return 0;
-}
-
-static void efm32_uart_config_port(struct uart_port *port, int type)
-{
- if (type & UART_CONFIG_TYPE &&
- !efm32_uart_request_port(port))
- port->type = PORT_EFMUART;
-}
-
-static int efm32_uart_verify_port(struct uart_port *port,
- struct serial_struct *serinfo)
-{
- int ret = 0;
-
- if (serinfo->type != PORT_UNKNOWN && serinfo->type != PORT_EFMUART)
- ret = -EINVAL;
-
- return ret;
-}
-
-static const struct uart_ops efm32_uart_pops = {
- .tx_empty = efm32_uart_tx_empty,
- .set_mctrl = efm32_uart_set_mctrl,
- .get_mctrl = efm32_uart_get_mctrl,
- .stop_tx = efm32_uart_stop_tx,
- .start_tx = efm32_uart_start_tx,
- .stop_rx = efm32_uart_stop_rx,
- .break_ctl = efm32_uart_break_ctl,
- .startup = efm32_uart_startup,
- .shutdown = efm32_uart_shutdown,
- .set_termios = efm32_uart_set_termios,
- .type = efm32_uart_type,
- .release_port = efm32_uart_release_port,
- .request_port = efm32_uart_request_port,
- .config_port = efm32_uart_config_port,
- .verify_port = efm32_uart_verify_port,
-};
-
-static struct efm32_uart_port *efm32_uart_ports[5];
-
-#ifdef CONFIG_SERIAL_EFM32_UART_CONSOLE
-static void efm32_uart_console_putchar(struct uart_port *port, int ch)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- unsigned int timeout = 0x400;
- u32 status;
-
- while (1) {
- status = efm32_uart_read32(efm_port, UARTn_STATUS);
-
- if (status & UARTn_STATUS_TXBL)
- break;
- if (!timeout--)
- return;
- }
- efm32_uart_write32(efm_port, ch, UARTn_TXDATA);
-}
-
-static void efm32_uart_console_write(struct console *co, const char *s,
- unsigned int count)
-{
- struct efm32_uart_port *efm_port = efm32_uart_ports[co->index];
- u32 status = efm32_uart_read32(efm_port, UARTn_STATUS);
- unsigned int timeout = 0x400;
-
- if (!(status & UARTn_STATUS_TXENS))
- efm32_uart_write32(efm_port, UARTn_CMD_TXEN, UARTn_CMD);
-
- uart_console_write(&efm_port->port, s, count,
- efm32_uart_console_putchar);
-
- /* Wait for the transmitter to become empty */
- while (1) {
- u32 status = efm32_uart_read32(efm_port, UARTn_STATUS);
- if (status & UARTn_STATUS_TXC)
- break;
- if (!timeout--)
- break;
- }
-
- if (!(status & UARTn_STATUS_TXENS))
- efm32_uart_write32(efm_port, UARTn_CMD_TXDIS, UARTn_CMD);
-}
-
-static void efm32_uart_console_get_options(struct efm32_uart_port *efm_port,
- int *baud, int *parity, int *bits)
-{
- u32 ctrl = efm32_uart_read32(efm_port, UARTn_CTRL);
- u32 route, clkdiv, frame;
-
- if (ctrl & UARTn_CTRL_SYNC)
- /* not operating in async mode */
- return;
-
- route = efm32_uart_read32(efm_port, UARTn_ROUTE);
- if (!(route & UARTn_ROUTE_TXPEN))
- /* tx pin not routed */
- return;
-
- clkdiv = efm32_uart_read32(efm_port, UARTn_CLKDIV);
-
- *baud = DIV_ROUND_CLOSEST(4 * efm_port->port.uartclk,
- 16 * (4 + (clkdiv >> 6)));
-
- frame = efm32_uart_read32(efm_port, UARTn_FRAME);
- switch (frame & UARTn_FRAME_PARITY__MASK) {
- case UARTn_FRAME_PARITY_ODD:
- *parity = 'o';
- break;
- case UARTn_FRAME_PARITY_EVEN:
- *parity = 'e';
- break;
- default:
- *parity = 'n';
- }
-
- *bits = (frame & UARTn_FRAME_DATABITS__MASK) -
- UARTn_FRAME_DATABITS(4) + 4;
-
- efm_debug(efm_port, "get_opts: options=%d%c%d\n",
- *baud, *parity, *bits);
-}
-
-static int efm32_uart_console_setup(struct console *co, char *options)
-{
- struct efm32_uart_port *efm_port;
- int baud = 115200;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
- int ret;
-
- if (co->index < 0 || co->index >= ARRAY_SIZE(efm32_uart_ports)) {
- unsigned i;
- for (i = 0; i < ARRAY_SIZE(efm32_uart_ports); ++i) {
- if (efm32_uart_ports[i]) {
- pr_warn("efm32-console: fall back to console index %u (from %hhi)\n",
- i, co->index);
- co->index = i;
- break;
- }
- }
- }
-
- efm_port = efm32_uart_ports[co->index];
- if (!efm_port) {
- pr_warn("efm32-console: No port at %d\n", co->index);
- return -ENODEV;
- }
-
- ret = clk_prepare(efm_port->clk);
- if (ret) {
- dev_warn(efm_port->port.dev,
- "console: clk_prepare failed: %d\n", ret);
- return ret;
- }
-
- efm_port->port.uartclk = clk_get_rate(efm_port->clk);
-
- if (options)
- uart_parse_options(options, &baud, &parity, &bits, &flow);
- else
- efm32_uart_console_get_options(efm_port,
- &baud, &parity, &bits);
-
- return uart_set_options(&efm_port->port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver efm32_uart_reg;
-
-static struct console efm32_uart_console = {
- .name = DEV_NAME,
- .write = efm32_uart_console_write,
- .device = uart_console_device,
- .setup = efm32_uart_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &efm32_uart_reg,
-};
-
-#else
-#define efm32_uart_console (*(struct console *)NULL)
-#endif /* ifdef CONFIG_SERIAL_EFM32_UART_CONSOLE / else */
-
-static struct uart_driver efm32_uart_reg = {
- .owner = THIS_MODULE,
- .driver_name = DRIVER_NAME,
- .dev_name = DEV_NAME,
- .nr = ARRAY_SIZE(efm32_uart_ports),
- .cons = &efm32_uart_console,
-};
-
-static int efm32_uart_probe_dt(struct platform_device *pdev,
- struct efm32_uart_port *efm_port)
-{
- struct device_node *np = pdev->dev.of_node;
- u32 location;
- int ret;
-
- if (!np)
- return 1;
-
- ret = of_property_read_u32(np, "energymicro,location", &location);
-
- if (ret)
- /* fall back to wrongly namespaced property */
- ret = of_property_read_u32(np, "efm32,location", &location);
-
- if (ret)
- /* fall back to old and (wrongly) generic property "location" */
- ret = of_property_read_u32(np, "location", &location);
-
- if (!ret) {
- if (location > 5) {
- dev_err(&pdev->dev, "invalid location\n");
- return -EINVAL;
- }
- efm_debug(efm_port, "using location %u\n", location);
- efm_port->pdata.location = location;
- } else {
- efm_debug(efm_port, "fall back to location 0\n");
- }
-
- ret = of_alias_get_id(np, "serial");
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to get alias id: %d\n", ret);
- return ret;
- } else {
- efm_port->port.line = ret;
- return 0;
- }
-
-}
-
-static int efm32_uart_probe(struct platform_device *pdev)
-{
- struct efm32_uart_port *efm_port;
- struct resource *res;
- unsigned int line;
- int ret;
-
- efm_port = kzalloc(sizeof(*efm_port), GFP_KERNEL);
- if (!efm_port) {
- dev_dbg(&pdev->dev, "failed to allocate private data\n");
- return -ENOMEM;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENODEV;
- dev_dbg(&pdev->dev, "failed to determine base address\n");
- goto err_get_base;
- }
-
- if (resource_size(res) < 60) {
- ret = -EINVAL;
- dev_dbg(&pdev->dev, "memory resource too small\n");
- goto err_too_small;
- }
-
- ret = platform_get_irq(pdev, 0);
- if (ret <= 0) {
- dev_dbg(&pdev->dev, "failed to get rx irq\n");
- goto err_get_rxirq;
- }
-
- efm_port->port.irq = ret;
-
- ret = platform_get_irq(pdev, 1);
- if (ret <= 0)
- ret = efm_port->port.irq + 1;
-
- efm_port->txirq = ret;
-
- efm_port->port.dev = &pdev->dev;
- efm_port->port.mapbase = res->start;
- efm_port->port.type = PORT_EFMUART;
- efm_port->port.iotype = UPIO_MEM32;
- efm_port->port.fifosize = 2;
- efm_port->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_EFM32_UART_CONSOLE);
- efm_port->port.ops = &efm32_uart_pops;
- efm_port->port.flags = UPF_BOOT_AUTOCONF;
-
- ret = efm32_uart_probe_dt(pdev, efm_port);
- if (ret > 0) {
- /* not created by device tree */
- const struct efm32_uart_pdata *pdata = dev_get_platdata(&pdev->dev);
-
- efm_port->port.line = pdev->id;
-
- if (pdata)
- efm_port->pdata = *pdata;
- } else if (ret < 0)
- goto err_probe_dt;
-
- line = efm_port->port.line;
-
- if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
- efm32_uart_ports[line] = efm_port;
-
- ret = uart_add_one_port(&efm32_uart_reg, &efm_port->port);
- if (ret) {
- dev_dbg(&pdev->dev, "failed to add port: %d\n", ret);
-
- if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
- efm32_uart_ports[line] = NULL;
-err_probe_dt:
-err_get_rxirq:
-err_too_small:
-err_get_base:
- kfree(efm_port);
- } else {
- platform_set_drvdata(pdev, efm_port);
- dev_dbg(&pdev->dev, "\\o/\n");
- }
-
- return ret;
-}
-
-static int efm32_uart_remove(struct platform_device *pdev)
-{
- struct efm32_uart_port *efm_port = platform_get_drvdata(pdev);
- unsigned int line = efm_port->port.line;
-
- uart_remove_one_port(&efm32_uart_reg, &efm_port->port);
-
- if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
- efm32_uart_ports[line] = NULL;
-
- kfree(efm_port);
-
- return 0;
-}
-
-static const struct of_device_id efm32_uart_dt_ids[] = {
- {
- .compatible = "energymicro,efm32-uart",
- }, {
- /* doesn't follow the "vendor,device" scheme, don't use */
- .compatible = "efm32,uart",
- }, {
- /* sentinel */
- }
-};
-MODULE_DEVICE_TABLE(of, efm32_uart_dt_ids);
-
-static struct platform_driver efm32_uart_driver = {
- .probe = efm32_uart_probe,
- .remove = efm32_uart_remove,
-
- .driver = {
- .name = DRIVER_NAME,
- .of_match_table = efm32_uart_dt_ids,
- },
-};
-
-static int __init efm32_uart_init(void)
-{
- int ret;
-
- ret = uart_register_driver(&efm32_uart_reg);
- if (ret)
- return ret;
-
- ret = platform_driver_register(&efm32_uart_driver);
- if (ret)
- uart_unregister_driver(&efm32_uart_reg);
-
- pr_info("EFM32 UART/USART driver\n");
-
- return ret;
-}
-module_init(efm32_uart_init);
-
-static void __exit efm32_uart_exit(void)
-{
- platform_driver_unregister(&efm32_uart_driver);
- uart_unregister_driver(&efm32_uart_reg);
-}
-module_exit(efm32_uart_exit);
-
-MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");
-MODULE_DESCRIPTION("EFM32 UART/USART driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/include/linux/platform_data/efm32-uart.h b/include/linux/platform_data/efm32-uart.h
deleted file mode 100644
index ccbb8f11db75..000000000000
--- a/include/linux/platform_data/efm32-uart.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *
- *
- */
-#ifndef __LINUX_PLATFORM_DATA_EFM32_UART_H__
-#define __LINUX_PLATFORM_DATA_EFM32_UART_H__
-
-#include <linux/types.h>
-
-/**
- * struct efm32_uart_pdata
- * @location: pinmux location for the I/O pins (to be written to the ROUTE
- * register)
- */
-struct efm32_uart_pdata {
- u8 location;
-};
-#endif /* ifndef __LINUX_PLATFORM_DATA_EFM32_UART_H__ */
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h
index 62c22045fe65..c4042dcfdc0c 100644
--- a/include/uapi/linux/serial_core.h
+++ b/include/uapi/linux/serial_core.h
@@ -208,9 +208,6 @@
/* Atheros AR933X SoC */
#define PORT_AR933X 99
-/* Energy Micro efm32 SoC */
-#define PORT_EFMUART 100
-
/* ARC (Synopsys) on-chip UART */
#define PORT_ARC 101
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v2 7/7] MAINTAINERS: Remove deleted platform efm32
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
` (5 preceding siblings ...)
2021-01-15 15:51 ` [PATCH v2 6/7] tty: serial: Drop unused efm32 serial driver Uwe Kleine-König
@ 2021-01-15 15:51 ` Uwe Kleine-König
2021-01-15 16:44 ` [PATCH v2 0/7] Remove ARM " Arnd Bergmann
7 siblings, 0 replies; 15+ messages in thread
From: Uwe Kleine-König @ 2021-01-15 15:51 UTC (permalink / raw)
To: Arnd Bergmann, Olof Johansson; +Cc: soc, kernel, linux-arm-kernel, linux-kernel
There are no files left to be maintained, to remove the maintainer
entry, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
MAINTAINERS | 7 -------
1 file changed, 7 deletions(-)
diff --git a/MAINTAINERS b/MAINTAINERS
index 546aa66428c9..93e56233c6de 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1807,13 +1807,6 @@ F: drivers/firmware/turris-mox-rwtm.c
F: drivers/gpio/gpio-moxtet.c
F: include/linux/moxtet.h
-ARM/ENERGY MICRO (SILICON LABS) EFM32 SUPPORT
-M: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
-R: Pengutronix Kernel Team <kernel@pengutronix.de>
-L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S: Maintained
-N: efm32
-
ARM/EZX SMARTPHONES (A780, A910, A1200, E680, ROKR E2 and ROKR E6)
M: Robert Jarzmik <robert.jarzmik@free.fr>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 15+ messages in thread
* Re: [PATCH v2 0/7] Remove ARM platform efm32
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
` (6 preceding siblings ...)
2021-01-15 15:51 ` [PATCH v2 7/7] MAINTAINERS: Remove deleted platform efm32 Uwe Kleine-König
@ 2021-01-15 16:44 ` Arnd Bergmann
2021-01-15 16:48 ` Wolfram Sang
2021-01-16 8:02 ` Greg Kroah-Hartman
7 siblings, 2 replies; 15+ messages in thread
From: Arnd Bergmann @ 2021-01-15 16:44 UTC (permalink / raw)
To: Uwe Kleine-König
Cc: DTML, Uwe Kleine-König, Arnd Bergmann, Stephen Boyd,
Greg Kroah-Hartman, Michael Turquette, Daniel Lezcano,
linux-kernel, linux-spi, Wolfram Sang, SoC Team, Rob Herring,
Mark Brown, Sascha Hauer, linux-serial, Olof Johansson,
Thomas Gleixner, Jiri Slaby, linux-clk, Linux ARM, Linux I2C
On Fri, Jan 15, 2021 at 4:51 PM Uwe Kleine-König
<u.kleine-koenig@pengutronix.de> wrote:
>
> From: Uwe Kleine-König <uwe@kleine-koenig.org>
>
> Hello,
>
> compared to v1 (Message-Id:
> 20210114151630.128830-1-u.kleine-koenig@pengutronix.de) I did the following changes:
>
> - add "serial" to the summary line of the patch removing the serial
> driver
> - actually remove the serial driver in the patch that claims to do this
> instead of patch 1.
>
> On irc Arnd signalled to want to merge the first patch. As there are no
> hard interdependencies between these, I think the best approach is for the
> individual maintainers to pick up the patches they are responsible for.
I've applied patches 1 *and* 7 now, left 2 through 6.
Subsystem maintainers: Please let me know if you want to pick the
driver removal patches into your tree, or if which ones I should apply
here, with your Ack.
Arnd
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2 0/7] Remove ARM platform efm32
2021-01-15 16:44 ` [PATCH v2 0/7] Remove ARM " Arnd Bergmann
@ 2021-01-15 16:48 ` Wolfram Sang
2021-01-16 8:02 ` Greg Kroah-Hartman
1 sibling, 0 replies; 15+ messages in thread
From: Wolfram Sang @ 2021-01-15 16:48 UTC (permalink / raw)
To: Arnd Bergmann
Cc: DTML, Uwe Kleine-König, Arnd Bergmann, linux-serial,
Stephen Boyd, Greg Kroah-Hartman, Michael Turquette,
Daniel Lezcano, linux-kernel, linux-spi, SoC Team, Rob Herring,
Mark Brown, Sascha Hauer, Uwe Kleine-König, Olof Johansson,
Thomas Gleixner, Jiri Slaby, linux-clk, Linux ARM, Linux I2C
[-- Attachment #1.1: Type: text/plain, Size: 220 bytes --]
> Subsystem maintainers: Please let me know if you want to pick the
> driver removal patches into your tree, or if which ones I should apply
> here, with your Ack.
I'll apply the I2C patch here. Thanks, Uwe and Arnd!
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
[-- Attachment #2: Type: text/plain, Size: 176 bytes --]
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2 0/7] Remove ARM platform efm32
2021-01-15 16:44 ` [PATCH v2 0/7] Remove ARM " Arnd Bergmann
2021-01-15 16:48 ` Wolfram Sang
@ 2021-01-16 8:02 ` Greg Kroah-Hartman
1 sibling, 0 replies; 15+ messages in thread
From: Greg Kroah-Hartman @ 2021-01-16 8:02 UTC (permalink / raw)
To: Arnd Bergmann
Cc: DTML, Uwe Kleine-König, Arnd Bergmann, linux-serial,
Stephen Boyd, Michael Turquette, Daniel Lezcano, linux-kernel,
linux-spi, Wolfram Sang, SoC Team, Rob Herring, Mark Brown,
Sascha Hauer, Uwe Kleine-König, Olof Johansson,
Thomas Gleixner, Jiri Slaby, linux-clk, Linux ARM, Linux I2C
On Fri, Jan 15, 2021 at 05:44:59PM +0100, Arnd Bergmann wrote:
> On Fri, Jan 15, 2021 at 4:51 PM Uwe Kleine-König
> <u.kleine-koenig@pengutronix.de> wrote:
> >
> > From: Uwe Kleine-König <uwe@kleine-koenig.org>
> >
> > Hello,
> >
> > compared to v1 (Message-Id:
> > 20210114151630.128830-1-u.kleine-koenig@pengutronix.de) I did the following changes:
> >
> > - add "serial" to the summary line of the patch removing the serial
> > driver
> > - actually remove the serial driver in the patch that claims to do this
> > instead of patch 1.
> >
> > On irc Arnd signalled to want to merge the first patch. As there are no
> > hard interdependencies between these, I think the best approach is for the
> > individual maintainers to pick up the patches they are responsible for.
>
> I've applied patches 1 *and* 7 now, left 2 through 6.
>
> Subsystem maintainers: Please let me know if you want to pick the
> driver removal patches into your tree, or if which ones I should apply
> here, with your Ack.
I've already taken patch 6 into my tty/serial tree, thanks.
greg k-h
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2 5/7] i2c: Drop unused efm32 bus driver
2021-01-15 15:51 ` [PATCH v2 5/7] i2c: " Uwe Kleine-König
@ 2021-01-17 11:09 ` Wolfram Sang
0 siblings, 0 replies; 15+ messages in thread
From: Wolfram Sang @ 2021-01-17 11:09 UTC (permalink / raw)
To: Uwe Kleine-König
Cc: Arnd Bergmann, soc, linux-i2c, kernel, Olof Johansson, linux-arm-kernel
[-- Attachment #1.1: Type: text/plain, Size: 268 bytes --]
On Fri, Jan 15, 2021 at 04:51:28PM +0100, Uwe Kleine-König wrote:
> Support for this machine was just removed, so drop the now unused i2c
> bus driver, too.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Applied to for-next, thanks!
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
[-- Attachment #2: Type: text/plain, Size: 176 bytes --]
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2 3/7] clocksource: Drop unused efm32 timer code
2021-01-15 15:51 ` [PATCH v2 3/7] clocksource: Drop unused efm32 timer code Uwe Kleine-König
@ 2021-01-18 15:18 ` Daniel Lezcano
2021-01-18 15:20 ` Arnd Bergmann
2021-01-18 18:09 ` Daniel Lezcano
1 sibling, 1 reply; 15+ messages in thread
From: Daniel Lezcano @ 2021-01-18 15:18 UTC (permalink / raw)
To: Uwe Kleine-König, Arnd Bergmann, Olof Johansson, Thomas Gleixner
Cc: soc, kernel, linux-arm-kernel, linux-kernel
On 15/01/2021 16:51, Uwe Kleine-König wrote:
> Support for this machine was just removed, so drop the now unused timer
> code, too.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Shall I take it through my tree ?
> ---
> drivers/clocksource/Kconfig | 9 -
> drivers/clocksource/Makefile | 1 -
> drivers/clocksource/timer-efm32.c | 278 ------------------------------
> 3 files changed, 288 deletions(-)
> delete mode 100644 drivers/clocksource/timer-efm32.c
>
> diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
> index 14c7c4712478..1416a32140c5 100644
> --- a/drivers/clocksource/Kconfig
> +++ b/drivers/clocksource/Kconfig
> @@ -242,15 +242,6 @@ config INTEGRATOR_AP_TIMER
> help
> Enables support for the Integrator-AP timer.
>
> -config CLKSRC_EFM32
> - bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
> - depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
> - select CLKSRC_MMIO
> - default ARCH_EFM32
> - help
> - Support to use the timers of EFM32 SoCs as clock source and clock
> - event device.
> -
> config CLKSRC_LPC32XX
> bool "Clocksource for LPC32XX" if COMPILE_TEST
> depends on HAS_IOMEM
> diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
> index 3c75cbbf8533..08173383f2d9 100644
> --- a/drivers/clocksource/Makefile
> +++ b/drivers/clocksource/Makefile
> @@ -43,7 +43,6 @@ obj-$(CONFIG_VT8500_TIMER) += timer-vt8500.o
> obj-$(CONFIG_NSPIRE_TIMER) += timer-zevio.o
> obj-$(CONFIG_BCM_KONA_TIMER) += bcm_kona_timer.o
> obj-$(CONFIG_CADENCE_TTC_TIMER) += timer-cadence-ttc.o
> -obj-$(CONFIG_CLKSRC_EFM32) += timer-efm32.o
> obj-$(CONFIG_CLKSRC_STM32) += timer-stm32.o
> obj-$(CONFIG_CLKSRC_STM32_LP) += timer-stm32-lp.o
> obj-$(CONFIG_CLKSRC_EXYNOS_MCT) += exynos_mct.o
> diff --git a/drivers/clocksource/timer-efm32.c b/drivers/clocksource/timer-efm32.c
> deleted file mode 100644
> index 441a4b916841..000000000000
> --- a/drivers/clocksource/timer-efm32.c
> +++ /dev/null
> @@ -1,278 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0-only
> -/*
> - * Copyright (C) 2013 Pengutronix
> - * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
> - */
> -
> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> -
> -#include <linux/kernel.h>
> -#include <linux/clocksource.h>
> -#include <linux/clockchips.h>
> -#include <linux/irq.h>
> -#include <linux/interrupt.h>
> -#include <linux/of.h>
> -#include <linux/of_address.h>
> -#include <linux/of_irq.h>
> -#include <linux/clk.h>
> -
> -#define TIMERn_CTRL 0x00
> -#define TIMERn_CTRL_PRESC(val) (((val) & 0xf) << 24)
> -#define TIMERn_CTRL_PRESC_1024 TIMERn_CTRL_PRESC(10)
> -#define TIMERn_CTRL_CLKSEL(val) (((val) & 0x3) << 16)
> -#define TIMERn_CTRL_CLKSEL_PRESCHFPERCLK TIMERn_CTRL_CLKSEL(0)
> -#define TIMERn_CTRL_OSMEN 0x00000010
> -#define TIMERn_CTRL_MODE(val) (((val) & 0x3) << 0)
> -#define TIMERn_CTRL_MODE_UP TIMERn_CTRL_MODE(0)
> -#define TIMERn_CTRL_MODE_DOWN TIMERn_CTRL_MODE(1)
> -
> -#define TIMERn_CMD 0x04
> -#define TIMERn_CMD_START 0x00000001
> -#define TIMERn_CMD_STOP 0x00000002
> -
> -#define TIMERn_IEN 0x0c
> -#define TIMERn_IF 0x10
> -#define TIMERn_IFS 0x14
> -#define TIMERn_IFC 0x18
> -#define TIMERn_IRQ_UF 0x00000002
> -
> -#define TIMERn_TOP 0x1c
> -#define TIMERn_CNT 0x24
> -
> -struct efm32_clock_event_ddata {
> - struct clock_event_device evtdev;
> - void __iomem *base;
> - unsigned periodic_top;
> -};
> -
> -static int efm32_clock_event_shutdown(struct clock_event_device *evtdev)
> -{
> - struct efm32_clock_event_ddata *ddata =
> - container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
> -
> - writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
> - return 0;
> -}
> -
> -static int efm32_clock_event_set_oneshot(struct clock_event_device *evtdev)
> -{
> - struct efm32_clock_event_ddata *ddata =
> - container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
> -
> - writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
> - writel_relaxed(TIMERn_CTRL_PRESC_1024 |
> - TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
> - TIMERn_CTRL_OSMEN |
> - TIMERn_CTRL_MODE_DOWN,
> - ddata->base + TIMERn_CTRL);
> - return 0;
> -}
> -
> -static int efm32_clock_event_set_periodic(struct clock_event_device *evtdev)
> -{
> - struct efm32_clock_event_ddata *ddata =
> - container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
> -
> - writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
> - writel_relaxed(ddata->periodic_top, ddata->base + TIMERn_TOP);
> - writel_relaxed(TIMERn_CTRL_PRESC_1024 |
> - TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
> - TIMERn_CTRL_MODE_DOWN,
> - ddata->base + TIMERn_CTRL);
> - writel_relaxed(TIMERn_CMD_START, ddata->base + TIMERn_CMD);
> - return 0;
> -}
> -
> -static int efm32_clock_event_set_next_event(unsigned long evt,
> - struct clock_event_device *evtdev)
> -{
> - struct efm32_clock_event_ddata *ddata =
> - container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
> -
> - writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
> - writel_relaxed(evt, ddata->base + TIMERn_CNT);
> - writel_relaxed(TIMERn_CMD_START, ddata->base + TIMERn_CMD);
> -
> - return 0;
> -}
> -
> -static irqreturn_t efm32_clock_event_handler(int irq, void *dev_id)
> -{
> - struct efm32_clock_event_ddata *ddata = dev_id;
> -
> - writel_relaxed(TIMERn_IRQ_UF, ddata->base + TIMERn_IFC);
> -
> - ddata->evtdev.event_handler(&ddata->evtdev);
> -
> - return IRQ_HANDLED;
> -}
> -
> -static struct efm32_clock_event_ddata clock_event_ddata = {
> - .evtdev = {
> - .name = "efm32 clockevent",
> - .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
> - .set_state_shutdown = efm32_clock_event_shutdown,
> - .set_state_periodic = efm32_clock_event_set_periodic,
> - .set_state_oneshot = efm32_clock_event_set_oneshot,
> - .set_next_event = efm32_clock_event_set_next_event,
> - .rating = 200,
> - },
> -};
> -
> -static int __init efm32_clocksource_init(struct device_node *np)
> -{
> - struct clk *clk;
> - void __iomem *base;
> - unsigned long rate;
> - int ret;
> -
> - clk = of_clk_get(np, 0);
> - if (IS_ERR(clk)) {
> - ret = PTR_ERR(clk);
> - pr_err("failed to get clock for clocksource (%d)\n", ret);
> - goto err_clk_get;
> - }
> -
> - ret = clk_prepare_enable(clk);
> - if (ret) {
> - pr_err("failed to enable timer clock for clocksource (%d)\n",
> - ret);
> - goto err_clk_enable;
> - }
> - rate = clk_get_rate(clk);
> -
> - base = of_iomap(np, 0);
> - if (!base) {
> - ret = -EADDRNOTAVAIL;
> - pr_err("failed to map registers for clocksource\n");
> - goto err_iomap;
> - }
> -
> - writel_relaxed(TIMERn_CTRL_PRESC_1024 |
> - TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
> - TIMERn_CTRL_MODE_UP, base + TIMERn_CTRL);
> - writel_relaxed(TIMERn_CMD_START, base + TIMERn_CMD);
> -
> - ret = clocksource_mmio_init(base + TIMERn_CNT, "efm32 timer",
> - DIV_ROUND_CLOSEST(rate, 1024), 200, 16,
> - clocksource_mmio_readl_up);
> - if (ret) {
> - pr_err("failed to init clocksource (%d)\n", ret);
> - goto err_clocksource_init;
> - }
> -
> - return 0;
> -
> -err_clocksource_init:
> -
> - iounmap(base);
> -err_iomap:
> -
> - clk_disable_unprepare(clk);
> -err_clk_enable:
> -
> - clk_put(clk);
> -err_clk_get:
> -
> - return ret;
> -}
> -
> -static int __init efm32_clockevent_init(struct device_node *np)
> -{
> - struct clk *clk;
> - void __iomem *base;
> - unsigned long rate;
> - int irq;
> - int ret;
> -
> - clk = of_clk_get(np, 0);
> - if (IS_ERR(clk)) {
> - ret = PTR_ERR(clk);
> - pr_err("failed to get clock for clockevent (%d)\n", ret);
> - goto err_clk_get;
> - }
> -
> - ret = clk_prepare_enable(clk);
> - if (ret) {
> - pr_err("failed to enable timer clock for clockevent (%d)\n",
> - ret);
> - goto err_clk_enable;
> - }
> - rate = clk_get_rate(clk);
> -
> - base = of_iomap(np, 0);
> - if (!base) {
> - ret = -EADDRNOTAVAIL;
> - pr_err("failed to map registers for clockevent\n");
> - goto err_iomap;
> - }
> -
> - irq = irq_of_parse_and_map(np, 0);
> - if (!irq) {
> - ret = -ENOENT;
> - pr_err("failed to get irq for clockevent\n");
> - goto err_get_irq;
> - }
> -
> - writel_relaxed(TIMERn_IRQ_UF, base + TIMERn_IEN);
> -
> - clock_event_ddata.base = base;
> - clock_event_ddata.periodic_top = DIV_ROUND_CLOSEST(rate, 1024 * HZ);
> -
> - clockevents_config_and_register(&clock_event_ddata.evtdev,
> - DIV_ROUND_CLOSEST(rate, 1024),
> - 0xf, 0xffff);
> -
> - ret = request_irq(irq, efm32_clock_event_handler, IRQF_TIMER,
> - "efm32 clockevent", &clock_event_ddata);
> - if (ret) {
> - pr_err("Failed setup irq\n");
> - goto err_setup_irq;
> - }
> -
> - return 0;
> -
> -err_setup_irq:
> -err_get_irq:
> -
> - iounmap(base);
> -err_iomap:
> -
> - clk_disable_unprepare(clk);
> -err_clk_enable:
> -
> - clk_put(clk);
> -err_clk_get:
> -
> - return ret;
> -}
> -
> -/*
> - * This function asserts that we have exactly one clocksource and one
> - * clock_event_device in the end.
> - */
> -static int __init efm32_timer_init(struct device_node *np)
> -{
> - static int has_clocksource, has_clockevent;
> - int ret = 0;
> -
> - if (!has_clocksource) {
> - ret = efm32_clocksource_init(np);
> - if (!ret) {
> - has_clocksource = 1;
> - return 0;
> - }
> - }
> -
> - if (!has_clockevent) {
> - ret = efm32_clockevent_init(np);
> - if (!ret) {
> - has_clockevent = 1;
> - return 0;
> - }
> - }
> -
> - return ret;
> -}
> -TIMER_OF_DECLARE(efm32compat, "efm32,timer", efm32_timer_init);
> -TIMER_OF_DECLARE(efm32, "energymicro,efm32-timer", efm32_timer_init);
>
--
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2 3/7] clocksource: Drop unused efm32 timer code
2021-01-18 15:18 ` Daniel Lezcano
@ 2021-01-18 15:20 ` Arnd Bergmann
0 siblings, 0 replies; 15+ messages in thread
From: Arnd Bergmann @ 2021-01-18 15:20 UTC (permalink / raw)
To: Daniel Lezcano
Cc: Arnd Bergmann, linux-kernel, SoC Team, Sascha Hauer,
Uwe Kleine-König, Olof Johansson, Thomas Gleixner,
Linux ARM
On Mon, Jan 18, 2021 at 4:18 PM Daniel Lezcano
<daniel.lezcano@linaro.org> wrote:
>
> On 15/01/2021 16:51, Uwe Kleine-König wrote:
> > Support for this machine was just removed, so drop the now unused timer
> > code, too.
> >
> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
>
> Shall I take it through my tree ?
Yes, please do. I have a couple more coming for the other removed platforms.
Arnd
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2 3/7] clocksource: Drop unused efm32 timer code
2021-01-15 15:51 ` [PATCH v2 3/7] clocksource: Drop unused efm32 timer code Uwe Kleine-König
2021-01-18 15:18 ` Daniel Lezcano
@ 2021-01-18 18:09 ` Daniel Lezcano
1 sibling, 0 replies; 15+ messages in thread
From: Daniel Lezcano @ 2021-01-18 18:09 UTC (permalink / raw)
To: Uwe Kleine-König, Arnd Bergmann, Olof Johansson, Thomas Gleixner
Cc: soc, kernel, linux-arm-kernel, linux-kernel
On 15/01/2021 16:51, Uwe Kleine-König wrote:
> Support for this machine was just removed, so drop the now unused timer
> code, too.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> ---
I've applied this patch in the clocksource tree.
Thanks
-- Daniel
--
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
end of thread, other threads:[~2021-01-18 18:10 UTC | newest]
Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-15 15:51 [PATCH v2 0/7] Remove ARM platform efm32 Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 1/7] ARM: drop efm32 platform Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 2/7] clk: Drop unused efm32gg driver Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 3/7] clocksource: Drop unused efm32 timer code Uwe Kleine-König
2021-01-18 15:18 ` Daniel Lezcano
2021-01-18 15:20 ` Arnd Bergmann
2021-01-18 18:09 ` Daniel Lezcano
2021-01-15 15:51 ` [PATCH v2 4/7] spi: Drop unused efm32 bus driver Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 5/7] i2c: " Uwe Kleine-König
2021-01-17 11:09 ` Wolfram Sang
2021-01-15 15:51 ` [PATCH v2 6/7] tty: serial: Drop unused efm32 serial driver Uwe Kleine-König
2021-01-15 15:51 ` [PATCH v2 7/7] MAINTAINERS: Remove deleted platform efm32 Uwe Kleine-König
2021-01-15 16:44 ` [PATCH v2 0/7] Remove ARM " Arnd Bergmann
2021-01-15 16:48 ` Wolfram Sang
2021-01-16 8:02 ` Greg Kroah-Hartman
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).