[PATCH - v4 4/4] DaVinci-vpfe-capture-converting-ccdc-drivers-to-platform-drivers

[m-karicheri2@ti.com]

From: Muralidharan Karicheri <m-karicheri2@ti.com>

Following are the changes from v3 :-

 - added ccdc clocks through clk_add_alias() calls

This combines the two patches sent earlier to change the clock configuration
and converting ccdc drivers to platform drivers. This has updated comments
against v2 of these patches. Two new clocks "master" and "slave" are defined for ccdc driver
as per comments from Kevin Hilman.

This adds platform code for ccdc driver on DM355 and DM6446.

Reviewed-by: Vaibhav Hiremath <hvaibhav@ti.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>

Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
---
Re-sending the patches based on Kevin's comments.
Applies to Linus tree
 arch/arm/mach-davinci/dm355.c  |   43 +++++++++++++++++++++++++++------------
 arch/arm/mach-davinci/dm644x.c |   21 ++++++++++++++++++-
 2 files changed, 50 insertions(+), 14 deletions(-)

diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index dedf4d4..d84e854 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -125,7 +125,6 @@ static struct clk vpss_slave_clk = {
 	.lpsc = DAVINCI_LPSC_VPSSSLV,
 };
 
-
 static struct clk clkout1_clk = {
 	.name = "clkout1",
 	.parent = &pll1_aux_clk,
@@ -665,6 +664,17 @@ static struct platform_device dm355_asp1_device = {
 	.resource	= dm355_asp1_resources,
 };
 
+static void dm355_ccdc_setup_pinmux(void)
+{
+	davinci_cfg_reg(DM355_VIN_PCLK);
+	davinci_cfg_reg(DM355_VIN_CAM_WEN);
+	davinci_cfg_reg(DM355_VIN_CAM_VD);
+	davinci_cfg_reg(DM355_VIN_CAM_HD);
+	davinci_cfg_reg(DM355_VIN_YIN_EN);
+	davinci_cfg_reg(DM355_VIN_CINL_EN);
+	davinci_cfg_reg(DM355_VIN_CINH_EN);
+}
+
 static struct resource dm355_vpss_resources[] = {
 	{
 		/* VPSS BL Base address */
@@ -701,6 +711,10 @@ static struct resource vpfe_resources[] = {
 		.end            = IRQ_VDINT1,
 		.flags          = IORESOURCE_IRQ,
 	},
+};
+
+static u64 vpfe_capture_dma_mask = DMA_BIT_MASK(32);
+static struct resource dm355_ccdc_resource[] = {
 	/* CCDC Base address */
 	{
 		.flags          = IORESOURCE_MEM,
@@ -708,8 +722,18 @@ static struct resource vpfe_resources[] = {
 		.end            = 0x01c70600 + 0x1ff,
 	},
 };
+static struct platform_device dm355_ccdc_dev = {
+	.name           = "dm355_ccdc",
+	.id             = -1,
+	.num_resources  = ARRAY_SIZE(dm355_ccdc_resource),
+	.resource       = dm355_ccdc_resource,
+	.dev = {
+		.dma_mask               = &vpfe_capture_dma_mask,
+		.coherent_dma_mask      = DMA_BIT_MASK(32),
+		.platform_data		= dm355_ccdc_setup_pinmux,
+	},
+};
 
-static u64 vpfe_capture_dma_mask = DMA_BIT_MASK(32);
 static struct platform_device vpfe_capture_dev = {
 	.name		= CAPTURE_DRV_NAME,
 	.id		= -1,
@@ -857,20 +881,13 @@ static int __init dm355_init_devices(void)
 	if (!cpu_is_davinci_dm355())
 		return 0;
 
+	/* Add ccdc clock aliases */
+	clk_add_alias("master", dm355_ccdc_dev.name, "vpss_master", NULL);
+	clk_add_alias("slave", dm355_ccdc_dev.name, "vpss_master", NULL);
 	davinci_cfg_reg(DM355_INT_EDMA_CC);
 	platform_device_register(&dm355_edma_device);
 	platform_device_register(&dm355_vpss_device);
-	/*
-	 * setup Mux configuration for vpfe input and register
-	 * vpfe capture platform device
-	 */
-	davinci_cfg_reg(DM355_VIN_PCLK);
-	davinci_cfg_reg(DM355_VIN_CAM_WEN);
-	davinci_cfg_reg(DM355_VIN_CAM_VD);
-	davinci_cfg_reg(DM355_VIN_CAM_HD);
-	davinci_cfg_reg(DM355_VIN_YIN_EN);
-	davinci_cfg_reg(DM355_VIN_CINL_EN);
-	davinci_cfg_reg(DM355_VIN_CINH_EN);
+	platform_device_register(&dm355_ccdc_dev);
 	platform_device_register(&vpfe_capture_dev);
 
 	return 0;
diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index 2cd0081..92aeb56 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -612,6 +612,11 @@ static struct resource vpfe_resources[] = {
 		.end            = IRQ_VDINT1,
 		.flags          = IORESOURCE_IRQ,
 	},
+};
+
+static u64 vpfe_capture_dma_mask = DMA_BIT_MASK(32);
+static struct resource dm644x_ccdc_resource[] = {
+	/* CCDC Base address */
 	{
 		.start          = 0x01c70400,
 		.end            = 0x01c70400 + 0xff,
@@ -619,7 +624,17 @@ static struct resource vpfe_resources[] = {
 	},
 };
 
-static u64 vpfe_capture_dma_mask = DMA_BIT_MASK(32);
+static struct platform_device dm644x_ccdc_dev = {
+	.name           = "dm644x_ccdc",
+	.id             = -1,
+	.num_resources  = ARRAY_SIZE(dm644x_ccdc_resource),
+	.resource       = dm644x_ccdc_resource,
+	.dev = {
+		.dma_mask               = &vpfe_capture_dma_mask,
+		.coherent_dma_mask      = DMA_BIT_MASK(32),
+	},
+};
+
 static struct platform_device vpfe_capture_dev = {
 	.name		= CAPTURE_DRV_NAME,
 	.id		= -1,
@@ -769,9 +784,13 @@ static int __init dm644x_init_devices(void)
 	if (!cpu_is_davinci_dm644x())
 		return 0;
 
+	/* Add ccdc clock aliases */
+	clk_add_alias("master", dm644x_ccdc_dev.name, "vpss_master", NULL);
+	clk_add_alias("slave", dm644x_ccdc_dev.name, "vpss_slave", NULL);
 	platform_device_register(&dm644x_edma_device);
 	platform_device_register(&dm644x_emac_device);
 	platform_device_register(&dm644x_vpss_device);
+	platform_device_register(&dm644x_ccdc_dev);
 	platform_device_register(&vpfe_capture_dev);
 
 	return 0;
-- 
1.6.0.4