mx25: add support for the CSI device

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 35 insertions, 2 deletions

diff --git a/arch/arm/mach-mx25/clock.c b/arch/arm/mach-mx25/clock.c
index 2bb4f1d73cbb..1a58cae4d5e8 100644
--- a/arch/arm/mach-mx25/clock.c
+++ b/arch/arm/mach-mx25/clock.c
@@ -139,6 +139,11 @@ static unsigned long get_rate_lcdc(struct clk *clk)
         return get_rate_per(7);
 }
 
+static unsigned long get_rate_csi(struct clk *clk)
+{
+        return get_rate_per(0);
+}
+
 static unsigned long get_rate_otg(struct clk *clk)
 {
         unsigned long cctl = readl(CRM_BASE + CCM_CCTL);
@@ -211,6 +216,8 @@ DEFINE_CLOCK(cspi3_clk,  0, CCM_CGCR1,  7, get_rate_ipg, NULL, NULL);
 DEFINE_CLOCK(fec_ahb_clk, 0, CCM_CGCR0, 23, NULL,        NULL, NULL);
 DEFINE_CLOCK(lcdc_ahb_clk, 0, CCM_CGCR0, 24, NULL,       NULL, NULL);
 DEFINE_CLOCK(lcdc_per_clk, 0, CCM_CGCR0,  7, NULL,       NULL, &lcdc_ahb_clk);
+DEFINE_CLOCK(csi_ahb_clk, 0, CCM_CGCR0, 18, get_rate_csi, NULL, NULL);
+DEFINE_CLOCK(csi_per_clk, 0, CCM_CGCR0, 0, get_rate_csi, NULL, &csi_ahb_clk);
 DEFINE_CLOCK(uart1_clk,  0, CCM_CGCR2, 14, get_rate_uart, NULL, &uart_per_clk);
 DEFINE_CLOCK(uart2_clk,  0, CCM_CGCR2, 15, get_rate_uart, NULL, &uart_per_clk);
 DEFINE_CLOCK(uart3_clk,  0, CCM_CGCR2, 16, get_rate_uart, NULL, &uart_per_clk);
@@ -232,6 +239,7 @@ DEFINE_CLOCK(wdt_clk,    0, CCM_CGCR2, 19, get_rate_ipg, NULL,  NULL);
 DEFINE_CLOCK(ssi1_clk,  0, CCM_CGCR2, 11, get_rate_ssi1, NULL, &ssi1_per_clk);
 DEFINE_CLOCK(ssi2_clk,  1, CCM_CGCR2, 12, get_rate_ssi2, NULL, &ssi2_per_clk);
 DEFINE_CLOCK(audmux_clk, 0, CCM_CGCR1, 0, NULL, NULL, NULL);
+DEFINE_CLOCK(csi_clk,    0, CCM_CGCR1,  4, get_rate_csi, NULL,  &csi_per_clk);
 
 #define _REGISTER_CLOCK(d, n, c)        \
         {                               \
@@ -269,6 +277,7 @@ static struct clk_lookup lookups[] = {
         _REGISTER_CLOCK("imx-wdt.0", NULL, wdt_clk)
         _REGISTER_CLOCK("imx-ssi.0", NULL, ssi1_clk)
         _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk)
+        _REGISTER_CLOCK("mx2-camera.0", NULL, csi_clk)
         _REGISTER_CLOCK(NULL, "audmux", audmux_clk)
 };
 
@@ -284,8 +293,9 @@ int __init mx25_clocks_init(void)
         __raw_writel((0xf << 16) | (3 << 26), CRM_BASE + CCM_CGCR1);
         __raw_writel((1 << 5), CRM_BASE + CCM_CGCR2);
 
-        /* Clock source for lcdc is upll */
-        __raw_writel(__raw_readl(CRM_BASE+0x64) | (1 << 7), CRM_BASE + 0x64);
+        /* Clock source for lcdc and csi is upll */
+        __raw_writel(__raw_readl(CRM_BASE+0x64) | (1 << 7) | (1 << 0),
+                        CRM_BASE + 0x64);
 
         mxc_timer_init(&gpt_clk, MX25_IO_ADDRESS(MX25_GPT1_BASE_ADDR), 54);
 
diff --git a/arch/arm/mach-mx25/devices.c b/arch/arm/mach-mx25/devices.c
index baf0a7913644..82d3e53f01f2 100644
--- a/arch/arm/mach-mx25/devices.c
+++ b/arch/arm/mach-mx25/devices.c
@@ -571,3 +571,25 @@ struct platform_device imx_ssi_device1 = {
         .num_resources = ARRAY_SIZE(imx_ssi_resources1),
         .resource = imx_ssi_resources1,
 };
+
+static struct resource mx25_csi_resources[] = {
+        {
+                .start  = MX25_CSI_BASE_ADDR,
+                .end    = MX25_CSI_BASE_ADDR + 0xfff,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = MX25_INT_CSI,
+                .flags  = IORESOURCE_IRQ
+        },
+};
+
+struct platform_device mx25_csi_device = {
+        .name   = "mx2-camera",
+        .id     = 0,
+        .num_resources  = ARRAY_SIZE(mx25_csi_resources),
+        .resource       = mx25_csi_resources,
+        .dev            = {
+                .coherent_dma_mask = 0xffffffff,
+        },
+};
diff --git a/arch/arm/mach-mx25/devices.h b/arch/arm/mach-mx25/devices.h
index 290843bdddf3..00e29f57a596 100644
--- a/arch/arm/mach-mx25/devices.h
+++ b/arch/arm/mach-mx25/devices.h
@@ -25,3 +25,4 @@ extern struct platform_device mxc_wdt;
 extern struct platform_device mx25_kpp_device;
 extern struct platform_device imx_ssi_device0;
 extern struct platform_device imx_ssi_device1;
+extern struct platform_device mx25_csi_device;