[PATCH v3 0/4] clk: qcom : add sm8250 LPASS GFM drivers

[PATCH v3 0/4] clk: qcom : add sm8250 LPASS GFM drivers

[Srinivas Kandagatla]

This patchset adds support for GFM Muxes found in LPASS
(Low Power Audio SubSystem) IP in Audio Clock Controller
and Always ON clock controller.

Clocks derived from these muxes are consumed by LPASS Digital Codec.
Currently the driver for Audio and Always ON clock controller only
supports GFM Muxes, however it should be easy to add more clock
support when required

Changes since v2:
- updated Kconfig text and help as suggested by Stephen
- removed unnecessary header file include
- use fw_name instead of name for parents
- use devm_platform_ioremap_resource

verified dt_binding_check to pass on linux master,

Srinivas Kandagatla (4):
  dt-bindings: clock: Add support for LPASS Audio Clock Controller
  dt-bindings: clock: Add support for LPASS Always ON Controller
  clk: qcom: Add support to LPASS AUDIO_CC Glitch Free Mux clocks
  clk: qcom: Add support to LPASS AON_CC Glitch Free Mux clocks

 .../bindings/clock/qcom,aoncc-sm8250.yaml     |  58 ++++
 .../bindings/clock/qcom,audiocc-sm8250.yaml   |  58 ++++
 drivers/clk/qcom/Kconfig                      |   6 +
 drivers/clk/qcom/Makefile                     |   1 +
 drivers/clk/qcom/lpass-gfm-sm8250.c           | 320 ++++++++++++++++++
 .../clock/qcom,sm8250-lpass-aoncc.h           |  11 +
 .../clock/qcom,sm8250-lpass-audiocc.h         |  13 +
 7 files changed, 467 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,audiocc-sm8250.yaml
 create mode 100644 drivers/clk/qcom/lpass-gfm-sm8250.c
 create mode 100644 include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h
 create mode 100644 include/dt-bindings/clock/qcom,sm8250-lpass-audiocc.h

-- 
2.21.0

[PATCH v3 1/4] dt-bindings: clock: Add support for LPASS Audio Clock Controller

[Srinivas Kandagatla]

Audio Clock controller is a block inside LPASS which controls
2 Glitch free muxes to LPASS codec Macros.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 .../bindings/clock/qcom,audiocc-sm8250.yaml   | 58 +++++++++++++++++++
 .../clock/qcom,sm8250-lpass-audiocc.h         | 13 +++++
 2 files changed, 71 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,audiocc-sm8250.yaml
 create mode 100644 include/dt-bindings/clock/qcom,sm8250-lpass-audiocc.h

diff --git a/Documentation/devicetree/bindings/clock/qcom,audiocc-sm8250.yaml b/Documentation/devicetree/bindings/clock/qcom,audiocc-sm8250.yaml
new file mode 100644
index 000000000000..915d76206ad0
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,audiocc-sm8250.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,audiocc-sm8250.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock bindings for LPASS Audio Clock Controller on SM8250 SoCs
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description: |
+  The clock consumer should specify the desired clock by having the clock
+  ID in its "clocks" phandle cell.
+  See include/dt-bindings/clock/qcom,sm8250-lpass-audiocc.h for the full list
+  of Audio Clock controller clock IDs.
+
+properties:
+  compatible:
+    const: qcom,sm8250-lpass-audiocc
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+  clocks:
+    items:
+      - description: LPASS Core voting clock
+      - description: Glitch Free Mux register clock
+
+  clock-names:
+    items:
+      - const: core
+      - const: bus
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,sm8250-lpass-audiocc.h>
+    #include <dt-bindings/sound/qcom,q6afe.h>
+    clock-controller@3300000 {
+      #clock-cells = <1>;
+      compatible = "qcom,sm8250-lpass-audiocc";
+      reg = <0x03300000 0x30000>;
+      clocks = <&q6afecc LPASS_HW_MACRO_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>,
+               <&q6afecc LPASS_CLK_ID_TX_CORE_MCLK LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+      clock-names = "core", "bus";
+    };
diff --git a/include/dt-bindings/clock/qcom,sm8250-lpass-audiocc.h b/include/dt-bindings/clock/qcom,sm8250-lpass-audiocc.h
new file mode 100644
index 000000000000..a1aa6cb5d840
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,sm8250-lpass-audiocc.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _DT_BINDINGS_CLK_LPASS_AUDIOCC_SM8250_H
+#define _DT_BINDINGS_CLK_LPASS_AUDIOCC_SM8250_H
+
+/* From AudioCC */
+#define LPASS_CDC_WSA_NPL				0
+#define LPASS_CDC_WSA_MCLK				1
+#define LPASS_CDC_RX_MCLK				2
+#define LPASS_CDC_RX_NPL				3
+#define LPASS_CDC_RX_MCLK_MCLK2				4
+
+#endif /* _DT_BINDINGS_CLK_LPASS_AUDIOCC_SM8250_H */
-- 
2.21.0

Re: [PATCH v3 1/4] dt-bindings: clock: Add support for LPASS Audio Clock Controller

[Rob Herring]

On Fri, 16 Oct 2020 15:12:38 +0100, Srinivas Kandagatla wrote:
> Audio Clock controller is a block inside LPASS which controls
> 2 Glitch free muxes to LPASS codec Macros.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> ---
>  .../bindings/clock/qcom,audiocc-sm8250.yaml   | 58 +++++++++++++++++++
>  .../clock/qcom,sm8250-lpass-audiocc.h         | 13 +++++
>  2 files changed, 71 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/qcom,audiocc-sm8250.yaml
>  create mode 100644 include/dt-bindings/clock/qcom,sm8250-lpass-audiocc.h
> 


My bot found errors running 'make dt_binding_check' on your patch:

Error: Documentation/devicetree/bindings/clock/qcom,audiocc-sm8250.example.dts:25.30-31 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [scripts/Makefile.lib:342: Documentation/devicetree/bindings/clock/qcom,audiocc-sm8250.example.dt.yaml] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1366: dt_binding_check] Error 2


See https://patchwork.ozlabs.org/patch/1383373

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.

[PATCH v3 2/4] dt-bindings: clock: Add support for LPASS Always ON Controller

[Srinivas Kandagatla]

Always ON Clock controller is a block inside LPASS which controls
1 Glitch free muxes to LPASS codec Macros.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 .../bindings/clock/qcom,aoncc-sm8250.yaml     | 58 +++++++++++++++++++
 .../clock/qcom,sm8250-lpass-aoncc.h           | 11 ++++
 2 files changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml
 create mode 100644 include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h

diff --git a/Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml b/Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml
new file mode 100644
index 000000000000..c40a74b5d672
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,aoncc-sm8250.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock bindings for LPASS Always ON Clock Controller on SM8250 SoCs
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description: |
+  The clock consumer should specify the desired clock by having the clock
+  ID in its "clocks" phandle cell.
+  See include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h for the full list
+  of Audio Clock controller clock IDs.
+
+properties:
+  compatible:
+    const: qcom,sm8250-lpass-aon
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+  clocks:
+    items:
+      - description: LPASS Core voting clock
+      - description: Glitch Free Mux register clock
+
+  clock-names:
+    items:
+      - const: core
+      - const: bus
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,sm8250-lpass-aoncc.h>
+    #include <dt-bindings/sound/qcom,q6afe.h>
+    clock-controller@3800000 {
+      #clock-cells = <1>;
+      compatible = "qcom,sm8250-lpass-aon";
+      reg = <0x03380000 0x40000>;
+      clocks = <&q6afecc LPASS_HW_MACRO_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>,
+               <&q6afecc LPASS_CLK_ID_TX_CORE_MCLK LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+      clock-names = "core", "bus";
+    };
diff --git a/include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h b/include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h
new file mode 100644
index 000000000000..f5a1cfac8612
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _DT_BINDINGS_CLK_LPASS_AONCC_SM8250_H
+#define _DT_BINDINGS_CLK_LPASS_AONCC_SM8250_H
+
+/* from AOCC */
+#define LPASS_CDC_VA_MCLK				0
+#define LPASS_CDC_TX_NPL				1
+#define LPASS_CDC_TX_MCLK				2
+
+#endif /* _DT_BINDINGS_CLK_LPASS_AONCC_SM8250_H */
-- 
2.21.0

Re: [PATCH v3 2/4] dt-bindings: clock: Add support for LPASS Always ON Controller

[Rob Herring]

On Fri, 16 Oct 2020 15:12:39 +0100, Srinivas Kandagatla wrote:
> Always ON Clock controller is a block inside LPASS which controls
> 1 Glitch free muxes to LPASS codec Macros.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> ---
>  .../bindings/clock/qcom,aoncc-sm8250.yaml     | 58 +++++++++++++++++++
>  .../clock/qcom,sm8250-lpass-aoncc.h           | 11 ++++
>  2 files changed, 69 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml
>  create mode 100644 include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h
> 


My bot found errors running 'make dt_binding_check' on your patch:

Error: Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.example.dts:25.30-31 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [scripts/Makefile.lib:342: Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.example.dt.yaml] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1366: dt_binding_check] Error 2


See https://patchwork.ozlabs.org/patch/1383375

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.

[PATCH v3 3/4] clk: qcom: Add support to LPASS AUDIO_CC Glitch Free Mux clocks

[Srinivas Kandagatla]

GFM Muxes in AUDIO_CC control clocks to LPASS WSA and RX Codec Macros.
This patch adds support to these muxes.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/clk/qcom/Kconfig            |   6 +
 drivers/clk/qcom/Makefile           |   1 +
 drivers/clk/qcom/lpass-gfm-sm8250.c | 257 ++++++++++++++++++++++++++++
 3 files changed, 264 insertions(+)
 create mode 100644 drivers/clk/qcom/lpass-gfm-sm8250.c

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 058327310c25..c00911c110ac 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -475,4 +475,10 @@ config KRAITCC
 	  Support for the Krait CPU clocks on Qualcomm devices.
 	  Say Y if you want to support CPU frequency scaling.
 
+config CLK_GFM_LPASS_SM8250
+	tristate "SM8250 GFM LPASS Clocks"
+	help
+	  Support for the Glitch Free Mux (GFM) Low power audio
+          subsystem (LPASS) clocks found on SM8250 SoCs.
+
 endif
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 9677e769e7e9..7465cabc86aa 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -19,6 +19,7 @@ clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o
 # Keep alphabetically sorted by config
 obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o
 obj-$(CONFIG_APQ_MMCC_8084) += mmcc-apq8084.o
+obj-$(CONFIG_CLK_GFM_LPASS_SM8250) += lpass-gfm-sm8250.o
 obj-$(CONFIG_IPQ_APSS_PLL) += apss-ipq-pll.o
 obj-$(CONFIG_IPQ_APSS_6018) += apss-ipq6018.o
 obj-$(CONFIG_IPQ_GCC_4019) += gcc-ipq4019.o
diff --git a/drivers/clk/qcom/lpass-gfm-sm8250.c b/drivers/clk/qcom/lpass-gfm-sm8250.c
new file mode 100644
index 000000000000..48a73dd97d0d
--- /dev/null
+++ b/drivers/clk/qcom/lpass-gfm-sm8250.c
@@ -0,0 +1,257 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * LPASS Audio CC and Always ON CC Glitch Free Mux clock driver
+ *
+ * Copyright (c) 2020 Linaro Ltd.
+ * Author: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/pm_clock.h>
+#include <linux/pm_runtime.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/of_device.h>
+#include <dt-bindings/clock/qcom,sm8250-lpass-audiocc.h>
+
+struct lpass_gfm {
+	struct device *dev;
+	void __iomem *base;
+};
+
+struct clk_gfm {
+	unsigned int mux_reg;
+	unsigned int mux_mask;
+	struct clk_hw	hw;
+	struct lpass_gfm *priv;
+	void __iomem *gfm_mux;
+};
+
+#define GFM_MASK	BIT(1)
+#define to_clk_gfm(_hw) container_of(_hw, struct clk_gfm, hw)
+
+static u8 clk_gfm_get_parent(struct clk_hw *hw)
+{
+	struct clk_gfm *clk = to_clk_gfm(hw);
+
+	return readl(clk->gfm_mux) & GFM_MASK;
+}
+
+static int clk_gfm_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct clk_gfm *clk = to_clk_gfm(hw);
+	unsigned int val;
+
+	val = readl(clk->gfm_mux);
+
+	if (index)
+		val |= GFM_MASK;
+	else
+		val &= ~GFM_MASK;
+
+	writel(val, clk->gfm_mux);
+
+	return 0;
+}
+
+static const struct clk_ops clk_gfm_ops = {
+	.get_parent = clk_gfm_get_parent,
+	.set_parent = clk_gfm_set_parent,
+	.determine_rate = __clk_mux_determine_rate,
+};
+
+static struct clk_gfm lpass_gfm_wsa_mclk = {
+	.mux_reg = 0x220d8,
+	.mux_mask = BIT(0),
+	.hw.init = &(struct clk_init_data) {
+		.name = "WSA_MCLK",
+		.ops = &clk_gfm_ops,
+		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+		.parent_data = (const struct clk_parent_data[]){
+			{
+				.index = 0,
+				.fw_name = "LPASS_CLK_ID_TX_CORE_MCLK",
+			}, {
+				.index = 1,
+				.fw_name = "LPASS_CLK_ID_WSA_CORE_MCLK",
+			},
+		},
+		.num_parents = 2,
+	},
+};
+
+static struct clk_gfm lpass_gfm_wsa_npl = {
+	.mux_reg = 0x220d8,
+	.mux_mask = BIT(0),
+	.hw.init = &(struct clk_init_data) {
+		.name = "WSA_NPL",
+		.ops = &clk_gfm_ops,
+		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+		.parent_data = (const struct clk_parent_data[]){
+			{
+				.index = 0,
+				.fw_name = "LPASS_CLK_ID_TX_CORE_NPL_MCLK",
+			}, {
+				.index = 1,
+				.fw_name = "LPASS_CLK_ID_WSA_CORE_NPL_MCLK",
+			},
+		},
+		.num_parents = 2,
+	},
+};
+
+static struct clk_gfm lpass_gfm_rx_mclk_mclk2 = {
+	.mux_reg = 0x240d8,
+	.mux_mask = BIT(0),
+	.hw.init = &(struct clk_init_data) {
+		.name = "RX_MCLK_MCLK2",
+		.ops = &clk_gfm_ops,
+		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+		.parent_data = (const struct clk_parent_data[]){
+			{
+				.index = 0,
+				.fw_name = "LPASS_CLK_ID_TX_CORE_MCLK",
+			}, {
+				.index = 1,
+				.fw_name = "LPASS_CLK_ID_RX_CORE_MCLK",
+			},
+		},
+		.num_parents = 2,
+	},
+};
+
+static struct clk_gfm lpass_gfm_rx_npl = {
+	.mux_reg = 0x240d8,
+	.mux_mask = BIT(0),
+	.hw.init = &(struct clk_init_data) {
+		.name = "RX_NPL",
+		.ops = &clk_gfm_ops,
+		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+		.parent_data = (const struct clk_parent_data[]){
+			{
+				.index = 0,
+				.fw_name = "LPASS_CLK_ID_TX_CORE_NPL_MCLK",
+			}, {
+				.index = 1,
+				.fw_name = "LPASS_CLK_ID_RX_CORE_NPL_MCLK",
+			},
+		},
+		.num_parents = 2,
+	},
+};
+
+static struct clk_gfm *audiocc_gfm_clks[] = {
+	[LPASS_CDC_WSA_NPL]		= &lpass_gfm_wsa_npl,
+	[LPASS_CDC_WSA_MCLK]		= &lpass_gfm_wsa_mclk,
+	[LPASS_CDC_RX_NPL]		= &lpass_gfm_rx_npl,
+	[LPASS_CDC_RX_MCLK_MCLK2]	= &lpass_gfm_rx_mclk_mclk2,
+};
+
+static struct clk_hw_onecell_data audiocc_hw_onecell_data = {
+	.hws = {
+		[LPASS_CDC_WSA_NPL]	= &lpass_gfm_wsa_npl.hw,
+		[LPASS_CDC_WSA_MCLK]	= &lpass_gfm_wsa_mclk.hw,
+		[LPASS_CDC_RX_NPL]	= &lpass_gfm_rx_npl.hw,
+		[LPASS_CDC_RX_MCLK_MCLK2] = &lpass_gfm_rx_mclk_mclk2.hw,
+	},
+	.num = ARRAY_SIZE(audiocc_gfm_clks),
+};
+
+struct lpass_gfm_data {
+	struct clk_hw_onecell_data *onecell_data;
+	struct clk_gfm **gfm_clks;
+};
+
+static struct lpass_gfm_data audiocc_data = {
+	.onecell_data = &audiocc_hw_onecell_data,
+	.gfm_clks = audiocc_gfm_clks,
+};
+
+static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
+{
+	const struct lpass_gfm_data *data;
+	struct device *dev = &pdev->dev;
+	struct clk_gfm *gfm;
+	struct lpass_gfm *cc;
+	int err, i;
+
+	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
+	cc = devm_kzalloc(dev, sizeof(*cc), GFP_KERNEL);
+	if (!cc)
+		return -ENOMEM;
+
+	cc->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(cc->base))
+		return PTR_ERR(cc->base);
+
+	pm_runtime_enable(dev);
+	err = pm_clk_create(dev);
+	if (err)
+		goto pm_clk_err;
+
+	err = of_pm_clk_add_clks(dev);
+	if (err < 0) {
+		dev_dbg(dev, "Failed to get lpass core voting clocks\n");
+		goto clk_reg_err;
+	}
+
+	for (i = 0; i < data->onecell_data->num; i++) {
+		if (!data->gfm_clks[i])
+			continue;
+
+		gfm = data->gfm_clks[i];
+		gfm->priv = cc;
+		gfm->gfm_mux = cc->base;
+		gfm->gfm_mux = gfm->gfm_mux + data->gfm_clks[i]->mux_reg;
+
+		err = devm_clk_hw_register(dev, &data->gfm_clks[i]->hw);
+		if (err)
+			goto clk_reg_err;
+
+	}
+
+	err = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
+					  data->onecell_data);
+	if (err)
+		goto clk_reg_err;
+
+	return 0;
+
+clk_reg_err:
+	pm_clk_destroy(dev);
+pm_clk_err:
+	pm_runtime_disable(dev);
+	return err;
+}
+
+static const struct of_device_id lpass_gfm_clk_match_table[] = {
+	{
+		.compatible = "qcom,sm8250-lpass-audiocc",
+		.data = &audiocc_data,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, lpass_gfm_clk_match_table);
+
+static const struct dev_pm_ops lpass_gfm_pm_ops = {
+	SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL)
+};
+
+static struct platform_driver lpass_gfm_clk_driver = {
+	.probe		= lpass_gfm_clk_driver_probe,
+	.driver		= {
+		.name	= "lpass-gfm-clk",
+		.of_match_table = lpass_gfm_clk_match_table,
+		.pm = &lpass_gfm_pm_ops,
+	},
+};
+module_platform_driver(lpass_gfm_clk_driver);
+MODULE_LICENSE("GPL v2");
-- 
2.21.0

[PATCH v3 4/4] clk: qcom: Add support to LPASS AON_CC Glitch Free Mux clocks

[Srinivas Kandagatla]

LPASS Always ON Clock controller has one GFM mux to control VA
and TX clocks to codec macro on LPASS.
This patch adds support to this mux.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/clk/qcom/lpass-gfm-sm8250.c | 63 +++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/drivers/clk/qcom/lpass-gfm-sm8250.c b/drivers/clk/qcom/lpass-gfm-sm8250.c
index 48a73dd97d0d..d366c7c2abc7 100644
--- a/drivers/clk/qcom/lpass-gfm-sm8250.c
+++ b/drivers/clk/qcom/lpass-gfm-sm8250.c
@@ -18,6 +18,7 @@
 #include <linux/platform_device.h>
 #include <linux/of_device.h>
 #include <dt-bindings/clock/qcom,sm8250-lpass-audiocc.h>
+#include <dt-bindings/clock/qcom,sm8250-lpass-aoncc.h>
 
 struct lpass_gfm {
 	struct device *dev;
@@ -65,6 +66,46 @@ static const struct clk_ops clk_gfm_ops = {
 	.determine_rate = __clk_mux_determine_rate,
 };
 
+static struct clk_gfm lpass_gfm_va_mclk = {
+	.mux_reg = 0x20000,
+	.mux_mask = BIT(0),
+	.hw.init = &(struct clk_init_data) {
+		.name = "VA_MCLK",
+		.ops = &clk_gfm_ops,
+		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+		.num_parents = 2,
+		.parent_data = (const struct clk_parent_data[]){
+			{
+				.index = 0,
+				.fw_name = "LPASS_CLK_ID_TX_CORE_MCLK",
+			}, {
+				.index = 1,
+				.fw_name = "LPASS_CLK_ID_VA_CORE_MCLK",
+			},
+		},
+	},
+};
+
+static struct clk_gfm lpass_gfm_tx_npl = {
+	.mux_reg = 0x20000,
+	.mux_mask = BIT(0),
+	.hw.init = &(struct clk_init_data) {
+		.name = "TX_NPL",
+		.ops = &clk_gfm_ops,
+		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+		.parent_data = (const struct clk_parent_data[]){
+			{
+				.index = 0,
+				.fw_name = "LPASS_CLK_ID_TX_CORE_NPL_MCLK",
+			}, {
+				.index = 1,
+				.fw_name = "LPASS_CLK_ID_VA_CORE_2X_MCLK",
+			},
+		},
+		.num_parents = 2,
+	},
+};
+
 static struct clk_gfm lpass_gfm_wsa_mclk = {
 	.mux_reg = 0x220d8,
 	.mux_mask = BIT(0),
@@ -145,6 +186,19 @@ static struct clk_gfm lpass_gfm_rx_npl = {
 	},
 };
 
+static struct clk_gfm *aoncc_gfm_clks[] = {
+	[LPASS_CDC_VA_MCLK]		= &lpass_gfm_va_mclk,
+	[LPASS_CDC_TX_NPL]		= &lpass_gfm_tx_npl,
+};
+
+static struct clk_hw_onecell_data aoncc_hw_onecell_data = {
+	.hws = {
+		[LPASS_CDC_VA_MCLK]	= &lpass_gfm_va_mclk.hw,
+		[LPASS_CDC_TX_NPL]	= &lpass_gfm_tx_npl.hw,
+	},
+	.num = ARRAY_SIZE(aoncc_gfm_clks),
+};
+
 static struct clk_gfm *audiocc_gfm_clks[] = {
 	[LPASS_CDC_WSA_NPL]		= &lpass_gfm_wsa_npl,
 	[LPASS_CDC_WSA_MCLK]		= &lpass_gfm_wsa_mclk,
@@ -172,6 +226,11 @@ static struct lpass_gfm_data audiocc_data = {
 	.gfm_clks = audiocc_gfm_clks,
 };
 
+static struct lpass_gfm_data aoncc_data = {
+	.onecell_data = &aoncc_hw_onecell_data,
+	.gfm_clks = aoncc_gfm_clks,
+};
+
 static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
 {
 	const struct lpass_gfm_data *data;
@@ -233,6 +292,10 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id lpass_gfm_clk_match_table[] = {
+	{
+		.compatible = "qcom,sm8250-lpass-aoncc",
+		.data = &aoncc_data,
+	},
 	{
 		.compatible = "qcom,sm8250-lpass-audiocc",
 		.data = &audiocc_data,
-- 
2.21.0

Re: [PATCH v3 0/4] clk: qcom : add sm8250 LPASS GFM drivers

[Stephen Boyd]

Quoting Srinivas Kandagatla (2020-10-16 07:12:37)
> This patchset adds support for GFM Muxes found in LPASS
> (Low Power Audio SubSystem) IP in Audio Clock Controller
> and Always ON clock controller.
> 
> Clocks derived from these muxes are consumed by LPASS Digital Codec.
> Currently the driver for Audio and Always ON clock controller only
> supports GFM Muxes, however it should be easy to add more clock
> support when required
> 
> Changes since v2:
> - updated Kconfig text and help as suggested by Stephen
> - removed unnecessary header file include
> - use fw_name instead of name for parents
> - use devm_platform_ioremap_resource
> 
> verified dt_binding_check to pass on linux master,

Which linux master? Can you try on linux-next?

Re: [PATCH v3 0/4] clk: qcom : add sm8250 LPASS GFM drivers

[Srinivas Kandagatla]

On 19/10/2020 23:42, Stephen Boyd wrote:
> Quoting Srinivas Kandagatla (2020-10-16 07:12:37)
>> This patchset adds support for GFM Muxes found in LPASS
>> (Low Power Audio SubSystem) IP in Audio Clock Controller
>> and Always ON clock controller.
>>
>> Clocks derived from these muxes are consumed by LPASS Digital Codec.
>> Currently the driver for Audio and Always ON clock controller only
>> supports GFM Muxes, however it should be easy to add more clock
>> support when required
>>
>> Changes since v2:
>> - updated Kconfig text and help as suggested by Stephen
>> - removed unnecessary header file include
>> - use fw_name instead of name for parents
>> - use devm_platform_ioremap_resource
>>
>> verified dt_binding_check to pass on linux master,
> Which linux master? Can you try on linux-next?

I meant linus master branch. However I learned that Bot runs only based 
on rc1 tag (5.9-rc1 in this case) which is why its still reporting this 
errors even though the dependent patches are already in linus master branch!

I will resend this version patchset once rc1 is out!

thanks,
srini