diff options
Diffstat (limited to 'drivers/staging/dream/camera/msm_io7x.c')
-rw-r--r-- | drivers/staging/dream/camera/msm_io7x.c | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/drivers/staging/dream/camera/msm_io7x.c b/drivers/staging/dream/camera/msm_io7x.c new file mode 100644 index 00000000000..55c020bb7af --- /dev/null +++ b/drivers/staging/dream/camera/msm_io7x.c @@ -0,0 +1,291 @@ +/* + * Copyright (c) 2008-2009 QUALCOMM Incorporated + */ + +#include <linux/delay.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <mach/gpio.h> +#include <mach/board.h> +#include <mach/camera.h> + +#define CAMIF_CFG_RMSK 0x1fffff +#define CAM_SEL_BMSK 0x2 +#define CAM_PCLK_SRC_SEL_BMSK 0x60000 +#define CAM_PCLK_INVERT_BMSK 0x80000 +#define CAM_PAD_REG_SW_RESET_BMSK 0x100000 + +#define EXT_CAM_HSYNC_POL_SEL_BMSK 0x10000 +#define EXT_CAM_VSYNC_POL_SEL_BMSK 0x8000 +#define MDDI_CLK_CHICKEN_BIT_BMSK 0x80 + +#define CAM_SEL_SHFT 0x1 +#define CAM_PCLK_SRC_SEL_SHFT 0x11 +#define CAM_PCLK_INVERT_SHFT 0x13 +#define CAM_PAD_REG_SW_RESET_SHFT 0x14 + +#define EXT_CAM_HSYNC_POL_SEL_SHFT 0x10 +#define EXT_CAM_VSYNC_POL_SEL_SHFT 0xF +#define MDDI_CLK_CHICKEN_BIT_SHFT 0x7 +#define APPS_RESET_OFFSET 0x00000210 + +static struct clk *camio_vfe_mdc_clk; +static struct clk *camio_mdc_clk; +static struct clk *camio_vfe_clk; + +static struct msm_camera_io_ext camio_ext; +static struct resource *appio, *mdcio; +void __iomem *appbase, *mdcbase; + +static struct msm_camera_io_ext camio_ext; +static struct resource *appio, *mdcio; +void __iomem *appbase, *mdcbase; + +extern int clk_set_flags(struct clk *clk, unsigned long flags); + +int msm_camio_clk_enable(enum msm_camio_clk_type clktype) +{ + int rc = -1; + struct clk *clk = NULL; + + switch (clktype) { + case CAMIO_VFE_MDC_CLK: + clk = camio_vfe_mdc_clk = clk_get(NULL, "vfe_mdc_clk"); + break; + + case CAMIO_MDC_CLK: + clk = camio_mdc_clk = clk_get(NULL, "mdc_clk"); + break; + + case CAMIO_VFE_CLK: + clk = camio_vfe_clk = clk_get(NULL, "vfe_clk"); + break; + + default: + break; + } + + if (!IS_ERR(clk)) { + clk_enable(clk); + rc = 0; + } + + return rc; +} + +int msm_camio_clk_disable(enum msm_camio_clk_type clktype) +{ + int rc = -1; + struct clk *clk = NULL; + + switch (clktype) { + case CAMIO_VFE_MDC_CLK: + clk = camio_vfe_mdc_clk; + break; + + case CAMIO_MDC_CLK: + clk = camio_mdc_clk; + break; + + case CAMIO_VFE_CLK: + clk = camio_vfe_clk; + break; + + default: + break; + } + + if (!IS_ERR(clk)) { + clk_disable(clk); + clk_put(clk); + rc = 0; + } + + return rc; +} + +void msm_camio_clk_rate_set(int rate) +{ + struct clk *clk = camio_vfe_clk; + + if (clk != ERR_PTR(-ENOENT)) + clk_set_rate(clk, rate); +} + +int msm_camio_enable(struct platform_device *pdev) +{ + int rc = 0; + struct msm_camera_sensor_info *sinfo = pdev->dev.platform_data; + struct msm_camera_device_platform_data *camdev = sinfo->pdata; + + camio_ext = camdev->ioext; + + appio = request_mem_region(camio_ext.appphy, + camio_ext.appsz, pdev->name); + if (!appio) { + rc = -EBUSY; + goto enable_fail; + } + + appbase = ioremap(camio_ext.appphy, + camio_ext.appsz); + if (!appbase) { + rc = -ENOMEM; + goto apps_no_mem; + } + + mdcio = request_mem_region(camio_ext.mdcphy, + camio_ext.mdcsz, pdev->name); + if (!mdcio) { + rc = -EBUSY; + goto mdc_busy; + } + + mdcbase = ioremap(camio_ext.mdcphy, + camio_ext.mdcsz); + if (!mdcbase) { + rc = -ENOMEM; + goto mdc_no_mem; + } + + camdev->camera_gpio_on(); + + msm_camio_clk_enable(CAMIO_VFE_CLK); + msm_camio_clk_enable(CAMIO_MDC_CLK); + msm_camio_clk_enable(CAMIO_VFE_MDC_CLK); + return 0; + +mdc_no_mem: + release_mem_region(camio_ext.mdcphy, camio_ext.mdcsz); +mdc_busy: + iounmap(appbase); +apps_no_mem: + release_mem_region(camio_ext.appphy, camio_ext.appsz); +enable_fail: + return rc; +} + +void msm_camio_disable(struct platform_device *pdev) +{ + struct msm_camera_sensor_info *sinfo = pdev->dev.platform_data; + struct msm_camera_device_platform_data *camdev = sinfo->pdata; + + iounmap(mdcbase); + release_mem_region(camio_ext.mdcphy, camio_ext.mdcsz); + iounmap(appbase); + release_mem_region(camio_ext.appphy, camio_ext.appsz); + + camdev->camera_gpio_off(); + + msm_camio_clk_disable(CAMIO_VFE_CLK); + msm_camio_clk_disable(CAMIO_MDC_CLK); + msm_camio_clk_disable(CAMIO_VFE_MDC_CLK); +} + +void msm_camio_camif_pad_reg_reset(void) +{ + uint32_t reg; + uint32_t mask, value; + + /* select CLKRGM_VFE_SRC_CAM_VFE_SRC: internal source */ + msm_camio_clk_sel(MSM_CAMIO_CLK_SRC_INTERNAL); + + reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; + + mask = CAM_SEL_BMSK | + CAM_PCLK_SRC_SEL_BMSK | + CAM_PCLK_INVERT_BMSK; + + value = 1 << CAM_SEL_SHFT | + 3 << CAM_PCLK_SRC_SEL_SHFT | + 0 << CAM_PCLK_INVERT_SHFT; + + writel((reg & (~mask)) | (value & mask), mdcbase); + mdelay(10); + + reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; + mask = CAM_PAD_REG_SW_RESET_BMSK; + value = 1 << CAM_PAD_REG_SW_RESET_SHFT; + writel((reg & (~mask)) | (value & mask), mdcbase); + mdelay(10); + + reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; + mask = CAM_PAD_REG_SW_RESET_BMSK; + value = 0 << CAM_PAD_REG_SW_RESET_SHFT; + writel((reg & (~mask)) | (value & mask), mdcbase); + mdelay(10); + + msm_camio_clk_sel(MSM_CAMIO_CLK_SRC_EXTERNAL); + mdelay(10); +} + +void msm_camio_vfe_blk_reset(void) +{ + uint32_t val; + + val = readl(appbase + 0x00000210); + val |= 0x1; + writel(val, appbase + 0x00000210); + mdelay(10); + + val = readl(appbase + 0x00000210); + val &= ~0x1; + writel(val, appbase + 0x00000210); + mdelay(10); +} + +void msm_camio_camif_pad_reg_reset_2(void) +{ + uint32_t reg; + uint32_t mask, value; + + reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; + mask = CAM_PAD_REG_SW_RESET_BMSK; + value = 1 << CAM_PAD_REG_SW_RESET_SHFT; + writel((reg & (~mask)) | (value & mask), mdcbase); + mdelay(10); + + reg = (readl(mdcbase)) & CAMIF_CFG_RMSK; + mask = CAM_PAD_REG_SW_RESET_BMSK; + value = 0 << CAM_PAD_REG_SW_RESET_SHFT; + writel((reg & (~mask)) | (value & mask), mdcbase); + mdelay(10); +} + +void msm_camio_clk_sel(enum msm_camio_clk_src_type srctype) +{ + struct clk *clk = NULL; + + clk = camio_vfe_clk; + + if (clk != NULL && clk != ERR_PTR(-ENOENT)) { + switch (srctype) { + case MSM_CAMIO_CLK_SRC_INTERNAL: + clk_set_flags(clk, 0x00000100 << 1); + break; + + case MSM_CAMIO_CLK_SRC_EXTERNAL: + clk_set_flags(clk, 0x00000100); + break; + + default: + break; + } + } +} + +int msm_camio_probe_on(struct platform_device *pdev) +{ + struct msm_camera_sensor_info *sinfo = pdev->dev.platform_data; + struct msm_camera_device_platform_data *camdev = sinfo->pdata; + camdev->camera_gpio_on(); + return msm_camio_clk_enable(CAMIO_VFE_CLK); +} + +int msm_camio_probe_off(struct platform_device *pdev) +{ + struct msm_camera_sensor_info *sinfo = pdev->dev.platform_data; + struct msm_camera_device_platform_data *camdev = sinfo->pdata; + camdev->camera_gpio_off(); + return msm_camio_clk_disable(CAMIO_VFE_CLK); +} |