SH: add support for the RJ54N1CB0C camera for the kfr2r09 platform

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 139 insertions, 0 deletions

diff --git a/arch/sh/boards/mach-kfr2r09/setup.c b/arch/sh/boards/mach-kfr2r09/setup.c
index c08d33fe2104..ce01d6a953b8 100644
--- a/arch/sh/boards/mach-kfr2r09/setup.c
+++ b/arch/sh/boards/mach-kfr2r09/setup.c
@@ -18,6 +18,8 @@
 #include <linux/input.h>
 #include <linux/i2c.h>
 #include <linux/usb/r8a66597.h>
+#include <media/soc_camera.h>
+#include <media/sh_mobile_ceu.h>
 #include <video/sh_mobile_lcdc.h>
 #include <asm/clock.h>
 #include <asm/machvec.h>
@@ -212,11 +214,131 @@ static struct platform_device kfr2r09_usb0_gadget_device = {
         .resource       = kfr2r09_usb0_gadget_resources,
 };
 
+static struct sh_mobile_ceu_info sh_mobile_ceu_info = {
+        .flags = SH_CEU_FLAG_USE_8BIT_BUS,
+};
+
+static struct resource kfr2r09_ceu_resources[] = {
+        [0] = {
+                .name   = "CEU",
+                .start  = 0xfe910000,
+                .end    = 0xfe91009f,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = 52,
+                .end  = 52,
+                .flags  = IORESOURCE_IRQ,
+        },
+        [2] = {
+                /* place holder for contiguous memory */
+        },
+};
+
+static struct platform_device kfr2r09_ceu_device = {
+        .name           = "sh_mobile_ceu",
+        .id             = 0, /* "ceu0" clock */
+        .num_resources  = ARRAY_SIZE(kfr2r09_ceu_resources),
+        .resource       = kfr2r09_ceu_resources,
+        .dev    = {
+                .platform_data  = &sh_mobile_ceu_info,
+        },
+        .archdata = {
+                .hwblk_id = HWBLK_CEU0,
+        },
+};
+
+static struct i2c_board_info kfr2r09_i2c_camera = {
+        I2C_BOARD_INFO("rj54n1cb0c", 0x50),
+};
+
+static struct clk *camera_clk;
+
+#define DRVCRB 0xA405018C
+static int camera_power(struct device *dev, int mode)
+{
+        int ret;
+
+        if (mode) {
+                long rate;
+
+                camera_clk = clk_get(NULL, "video_clk");
+                if (IS_ERR(camera_clk))
+                        return PTR_ERR(camera_clk);
+
+                /* set VIO_CKO clock to 25MHz */
+                rate = clk_round_rate(camera_clk, 25000000);
+                ret = clk_set_rate(camera_clk, rate);
+                if (ret < 0)
+                        goto eclkrate;
+
+                /* set DRVCRB
+                 *
+                 * use 1.8 V for VccQ_VIO
+                 * use 2.85V for VccQ_SR
+                 */
+                ctrl_outw((ctrl_inw(DRVCRB) & ~0x0003) | 0x0001, DRVCRB);
+
+                /* reset clear */
+                ret = gpio_request(GPIO_PTB4, NULL);
+                if (ret < 0)
+                        goto eptb4;
+                ret = gpio_request(GPIO_PTB7, NULL);
+                if (ret < 0)
+                        goto eptb7;
+
+                ret = gpio_direction_output(GPIO_PTB4, 1);
+                if (!ret)
+                        ret = gpio_direction_output(GPIO_PTB7, 1);
+                if (ret < 0)
+                        goto egpioout;
+                msleep(1);
+
+                ret = clk_enable(camera_clk);   /* start VIO_CKO */
+                if (ret < 0)
+                        goto eclkon;
+
+                return 0;
+        }
+
+        ret = 0;
+
+        clk_disable(camera_clk);
+eclkon:
+        gpio_set_value(GPIO_PTB7, 0);
+egpioout:
+        gpio_set_value(GPIO_PTB4, 0);
+        gpio_free(GPIO_PTB7);
+eptb7:
+        gpio_free(GPIO_PTB4);
+eptb4:
+eclkrate:
+        clk_put(camera_clk);
+        return ret;
+}
+
+static struct soc_camera_link rj54n1_link = {
+        .power          = camera_power,
+        .board_info     = &kfr2r09_i2c_camera,
+        .i2c_adapter_id = 1,
+        .module_name    = "rj54n1cb0c",
+};
+
+static struct platform_device kfr2r09_camera = {
+        .name   = "soc-camera-pdrv",
+        .id     = 0,
+        .dev    = {
+                .platform_data = &rj54n1_link,
+        },
+};
+
 static struct platform_device *kfr2r09_devices[] __initdata = {
         &kfr2r09_nor_flash_device,
         &kfr2r09_nand_flash_device,
         &kfr2r09_sh_keysc_device,
         &kfr2r09_sh_lcdc_device,
+        &kfr2r09_ceu_device,
+        &kfr2r09_camera,
 };
 
 #define BSC_CS0BCR 0xfec10004
@@ -361,6 +483,23 @@ static int __init kfr2r09_devices_setup(void)
         if (kfr2r09_usb0_gadget_setup() == 0)
                 platform_device_register(&kfr2r09_usb0_gadget_device);
 
+        /* CEU */
+        gpio_request(GPIO_FN_VIO_CKO, NULL);
+        gpio_request(GPIO_FN_VIO0_CLK, NULL);
+        gpio_request(GPIO_FN_VIO0_VD, NULL);
+        gpio_request(GPIO_FN_VIO0_HD, NULL);
+        gpio_request(GPIO_FN_VIO0_FLD, NULL);
+        gpio_request(GPIO_FN_VIO0_D7, NULL);
+        gpio_request(GPIO_FN_VIO0_D6, NULL);
+        gpio_request(GPIO_FN_VIO0_D5, NULL);
+        gpio_request(GPIO_FN_VIO0_D4, NULL);
+        gpio_request(GPIO_FN_VIO0_D3, NULL);
+        gpio_request(GPIO_FN_VIO0_D2, NULL);
+        gpio_request(GPIO_FN_VIO0_D1, NULL);
+        gpio_request(GPIO_FN_VIO0_D0, NULL);
+
+        platform_resource_setup_memory(&kfr2r09_ceu_device, "ceu", 4 << 20);
+
         return platform_add_devices(kfr2r09_devices,
                                     ARRAY_SIZE(kfr2r09_devices));
 }