ASoC: Samsung: I2S: Add quirks as driver data in I2S

Samsung has different versions of I2S introduced in different
platforms. Each version has some new support added for multichannel,
secondary fifo, s/w reset control and internal mux for rclk src clk.
Each newly added change has a quirk. So this patch adds all the
required quirks as driver data and based on compatible string from
dtsi fetches the quirks.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

2 files changed, 42 insertions, 38 deletions

diff --git a/Documentation/devicetree/bindings/sound/samsung-i2s.txt b/Documentation/devicetree/bindings/sound/samsung-i2s.txt
index 025e66b85a43..25a0024d1b0a 100644
--- a/Documentation/devicetree/bindings/sound/samsung-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/samsung-i2s.txt
@@ -2,7 +2,11 @@
 
 Required SoC Specific Properties:
 
-- compatible : "samsung,i2s-v5"
+- compatible : should be one of the following.
+   - samsung,s3c6410-i2s: for 8/16/24bit stereo I2S.
+   - samsung,s5pv210-i2s: for 8/16/24bit multichannel(5.1) I2S with
+     secondary fifo, s/w reset control and internal mux for root clk src.
+
 - reg: physical base address of the controller and length of memory mapped
   region.
 - dmas: list of DMA controller phandle and DMA request line ordered pairs.
@@ -21,13 +25,6 @@ Required SoC Specific Properties:
 
 Optional SoC Specific Properties:
 
-- samsung,supports-6ch: If the I2S Primary sound source has 5.1 Channel
-  support, this flag is enabled.
-- samsung,supports-rstclr: This flag should be set if I2S software reset bit
-  control is required. When this flag is set I2S software reset bit will be
-  enabled or disabled based on need.
-- samsung,supports-secdai:If I2S block has a secondary FIFO and internal DMA,
-  then this flag is enabled.
 - samsung,idma-addr: Internal DMA register base address of the audio
   sub system(used in secondary sound source).
 - pinctrl-0: Should specify pin control groups used for this controller.
@@ -36,7 +33,7 @@ Optional SoC Specific Properties:
 Example:
 
 i2s0: i2s@03830000 {
-        compatible = "samsung,i2s-v5";
+        compatible = "samsung,s5pv210-i2s";
         reg = <0x03830000 0x100>;
         dmas = <&pdma0 10
                 &pdma0 9
@@ -46,9 +43,6 @@ i2s0: i2s@03830000 {
                 <&clock_audss EXYNOS_I2S_BUS>,
                 <&clock_audss EXYNOS_SCLK_I2S>;
         clock-names = "iis", "i2s_opclk0", "i2s_opclk1";
-        samsung,supports-6ch;
-        samsung,supports-rstclr;
-        samsung,supports-secdai;
         samsung,idma-addr = <0x03000000>;
         pinctrl-names = "default";
         pinctrl-0 = <&i2s0_bus>;
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 849ac0e225ca..3b4835a1bd23 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -40,6 +40,7 @@ enum samsung_dai_type {
 
 struct samsung_i2s_dai_data {
         int dai_type;
+        u32 quirks;
 };
 
 struct i2s_dai {
@@ -1032,18 +1033,18 @@ static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec)
 
 static const struct of_device_id exynos_i2s_match[];
 
-static inline int samsung_i2s_get_driver_data(struct platform_device *pdev)
+static inline const struct samsung_i2s_dai_data *samsung_i2s_get_driver_data(
+                                                struct platform_device *pdev)
 {
 #ifdef CONFIG_OF
-        struct samsung_i2s_dai_data *data;
         if (pdev->dev.of_node) {
                 const struct of_device_id *match;
                 match = of_match_node(exynos_i2s_match, pdev->dev.of_node);
-                data = (struct samsung_i2s_dai_data *) match->data;
-                return data->dai_type;
+                return match->data;
         } else
 #endif
-                return platform_get_device_id(pdev)->driver_data;
+                return (struct samsung_i2s_dai_data *)
+                                platform_get_device_id(pdev)->driver_data;
 }
 
 #ifdef CONFIG_PM_RUNTIME
@@ -1074,13 +1075,13 @@ static int samsung_i2s_probe(struct platform_device *pdev)
         struct resource *res;
         u32 regs_base, quirks = 0, idma_addr = 0;
         struct device_node *np = pdev->dev.of_node;
-        enum samsung_dai_type samsung_dai_type;
+        const struct samsung_i2s_dai_data *i2s_dai_data;
         int ret = 0;
 
         /* Call during Seconday interface registration */
-        samsung_dai_type = samsung_i2s_get_driver_data(pdev);
+        i2s_dai_data = samsung_i2s_get_driver_data(pdev);
 
-        if (samsung_dai_type == TYPE_SEC) {
+        if (i2s_dai_data->dai_type == TYPE_SEC) {
                 sec_dai = dev_get_drvdata(&pdev->dev);
                 if (!sec_dai) {
                         dev_err(&pdev->dev, "Unable to get drvdata\n");
@@ -1129,15 +1130,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
                         idma_addr = i2s_cfg->idma_addr;
                 }
         } else {
-                if (of_find_property(np, "samsung,supports-6ch", NULL))
-                        quirks |= QUIRK_PRI_6CHAN;
-
-                if (of_find_property(np, "samsung,supports-secdai", NULL))
-                        quirks |= QUIRK_SEC_DAI;
-
-                if (of_find_property(np, "samsung,supports-rstclr", NULL))
-                        quirks |= QUIRK_NEED_RSTCLR;
-
+                quirks = i2s_dai_data->quirks;
                 if (of_property_read_u32(np, "samsung,idma-addr",
                                          &idma_addr)) {
                         if (quirks & QUIRK_SEC_DAI) {
@@ -1250,27 +1243,44 @@ static int samsung_i2s_remove(struct platform_device *pdev)
         return 0;
 }
 
+static const struct samsung_i2s_dai_data i2sv3_dai_type = {
+        .dai_type = TYPE_PRI,
+        .quirks = QUIRK_NO_MUXPSR,
+};
+
+static const struct samsung_i2s_dai_data i2sv5_dai_type = {
+        .dai_type = TYPE_PRI,
+        .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR,
+};
+
+static const struct samsung_i2s_dai_data samsung_dai_type_pri = {
+        .dai_type = TYPE_PRI,
+};
+
+static const struct samsung_i2s_dai_data samsung_dai_type_sec = {
+        .dai_type = TYPE_SEC,
+};
+
 static struct platform_device_id samsung_i2s_driver_ids[] = {
         {
                 .name           = "samsung-i2s",
-                .driver_data    = TYPE_PRI,
+                .driver_data    = (kernel_ulong_t)&samsung_dai_type_pri,
         }, {
                 .name           = "samsung-i2s-sec",
-                .driver_data    = TYPE_SEC,
+                .driver_data    = (kernel_ulong_t)&samsung_dai_type_sec,
         },
         {},
 };
 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids);
 
 #ifdef CONFIG_OF
-static struct samsung_i2s_dai_data samsung_i2s_dai_data_array[] = {
-        [TYPE_PRI] = { TYPE_PRI },
-        [TYPE_SEC] = { TYPE_SEC },
-};
-
 static const struct of_device_id exynos_i2s_match[] = {
-        { .compatible = "samsung,i2s-v5",
-          .data = &samsung_i2s_dai_data_array[TYPE_PRI],
+        {
+                .compatible = "samsung,s3c6410-i2s",
+                .data = &i2sv3_dai_type,
+        }, {
+                .compatible = "samsung,s5pv210-i2s",
+                .data = &i2sv5_dai_type,
         },
         {},
 };