diff options
Diffstat (limited to 'drivers/video/omap2/displays/panel-nec-nl8048hl11-01b.c')
| -rw-r--r-- | drivers/video/omap2/displays/panel-nec-nl8048hl11-01b.c | 135 |
1 files changed, 43 insertions, 92 deletions
diff --git a/drivers/video/omap2/displays/panel-nec-nl8048hl11-01b.c b/drivers/video/omap2/displays/panel-nec-nl8048hl11-01b.c index c4e9c2b1b46..20c3cd91ff9 100644 --- a/drivers/video/omap2/displays/panel-nec-nl8048hl11-01b.c +++ b/drivers/video/omap2/displays/panel-nec-nl8048hl11-01b.c @@ -19,10 +19,11 @@ #include <linux/module.h> #include <linux/delay.h> #include <linux/spi/spi.h> -#include <linux/backlight.h> #include <linux/fb.h> +#include <linux/gpio.h> #include <video/omapdss.h> +#include <video/omap-panel-data.h> #define LCD_XRES 800 #define LCD_YRES 480 @@ -32,10 +33,6 @@ */ #define LCD_PIXEL_CLOCK 23800 -struct nec_8048_data { - struct backlight_device *bl; -}; - static const struct { unsigned char addr; unsigned char dat; @@ -84,93 +81,47 @@ static struct omap_video_timings nec_8048_panel_timings = { .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, }; -static int nec_8048_bl_update_status(struct backlight_device *bl) -{ - struct omap_dss_device *dssdev = dev_get_drvdata(&bl->dev); - int level; - - if (!dssdev->set_backlight) - return -EINVAL; - - if (bl->props.fb_blank == FB_BLANK_UNBLANK && - bl->props.power == FB_BLANK_UNBLANK) - level = bl->props.brightness; - else - level = 0; - - return dssdev->set_backlight(dssdev, level); -} - -static int nec_8048_bl_get_brightness(struct backlight_device *bl) +static inline struct panel_nec_nl8048_data +*get_panel_data(const struct omap_dss_device *dssdev) { - if (bl->props.fb_blank == FB_BLANK_UNBLANK && - bl->props.power == FB_BLANK_UNBLANK) - return bl->props.brightness; - - return 0; + return (struct panel_nec_nl8048_data *) dssdev->data; } -static const struct backlight_ops nec_8048_bl_ops = { - .get_brightness = nec_8048_bl_get_brightness, - .update_status = nec_8048_bl_update_status, -}; - static int nec_8048_panel_probe(struct omap_dss_device *dssdev) { - struct backlight_device *bl; - struct nec_8048_data *necd; - struct backlight_properties props; + struct panel_nec_nl8048_data *pd = get_panel_data(dssdev); int r; - dssdev->panel.timings = nec_8048_panel_timings; - - necd = kzalloc(sizeof(*necd), GFP_KERNEL); - if (!necd) - return -ENOMEM; - - dev_set_drvdata(&dssdev->dev, necd); + if (!pd) + return -EINVAL; - memset(&props, 0, sizeof(struct backlight_properties)); - props.max_brightness = 255; + dssdev->panel.timings = nec_8048_panel_timings; - bl = backlight_device_register("nec-8048", &dssdev->dev, dssdev, - &nec_8048_bl_ops, &props); - if (IS_ERR(bl)) { - r = PTR_ERR(bl); - kfree(necd); - return r; + if (gpio_is_valid(pd->qvga_gpio)) { + r = devm_gpio_request_one(&dssdev->dev, pd->qvga_gpio, + GPIOF_OUT_INIT_HIGH, "lcd QVGA"); + if (r) + return r; } - necd->bl = bl; - - bl->props.fb_blank = FB_BLANK_UNBLANK; - bl->props.power = FB_BLANK_UNBLANK; - bl->props.max_brightness = dssdev->max_backlight_level; - bl->props.brightness = dssdev->max_backlight_level; - r = nec_8048_bl_update_status(bl); - if (r < 0) - dev_err(&dssdev->dev, "failed to set lcd brightness\n"); + if (gpio_is_valid(pd->res_gpio)) { + r = devm_gpio_request_one(&dssdev->dev, pd->res_gpio, + GPIOF_OUT_INIT_LOW, "lcd RES"); + if (r) + return r; + } return 0; } static void nec_8048_panel_remove(struct omap_dss_device *dssdev) { - struct nec_8048_data *necd = dev_get_drvdata(&dssdev->dev); - struct backlight_device *bl = necd->bl; - - bl->props.power = FB_BLANK_POWERDOWN; - nec_8048_bl_update_status(bl); - backlight_device_unregister(bl); - - kfree(necd); } static int nec_8048_panel_power_on(struct omap_dss_device *dssdev) { + struct panel_nec_nl8048_data *pd = get_panel_data(dssdev); int r; - struct nec_8048_data *necd = dev_get_drvdata(&dssdev->dev); - struct backlight_device *bl = necd->bl; if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) return 0; @@ -182,36 +133,24 @@ static int nec_8048_panel_power_on(struct omap_dss_device *dssdev) if (r) goto err0; - if (dssdev->platform_enable) { - r = dssdev->platform_enable(dssdev); - if (r) - goto err1; - } - - r = nec_8048_bl_update_status(bl); - if (r < 0) - dev_err(&dssdev->dev, "failed to set lcd brightness\n"); + if (gpio_is_valid(pd->res_gpio)) + gpio_set_value_cansleep(pd->res_gpio, 1); return 0; -err1: - omapdss_dpi_display_disable(dssdev); + err0: return r; } static void nec_8048_panel_power_off(struct omap_dss_device *dssdev) { - struct nec_8048_data *necd = dev_get_drvdata(&dssdev->dev); - struct backlight_device *bl = necd->bl; + struct panel_nec_nl8048_data *pd = get_panel_data(dssdev); if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) return; - bl->props.brightness = 0; - nec_8048_bl_update_status(bl); - - if (dssdev->platform_disable) - dssdev->platform_disable(dssdev); + if (gpio_is_valid(pd->res_gpio)) + gpio_set_value_cansleep(pd->res_gpio, 0); omapdss_dpi_display_disable(dssdev); } @@ -303,16 +242,22 @@ static int nec_8048_spi_remove(struct spi_device *spi) return 0; } -static int nec_8048_spi_suspend(struct spi_device *spi, pm_message_t mesg) +#ifdef CONFIG_PM_SLEEP + +static int nec_8048_spi_suspend(struct device *dev) { + struct spi_device *spi = to_spi_device(dev); + nec_8048_spi_send(spi, 2, 0x01); mdelay(40); return 0; } -static int nec_8048_spi_resume(struct spi_device *spi) +static int nec_8048_spi_resume(struct device *dev) { + struct spi_device *spi = to_spi_device(dev); + /* reinitialize the panel */ spi_setup(spi); nec_8048_spi_send(spi, 2, 0x00); @@ -321,14 +266,20 @@ static int nec_8048_spi_resume(struct spi_device *spi) return 0; } +static SIMPLE_DEV_PM_OPS(nec_8048_spi_pm_ops, nec_8048_spi_suspend, + nec_8048_spi_resume); +#define NEC_8048_SPI_PM_OPS (&nec_8048_spi_pm_ops) +#else +#define NEC_8048_SPI_PM_OPS NULL +#endif + static struct spi_driver nec_8048_spi_driver = { .probe = nec_8048_spi_probe, .remove = nec_8048_spi_remove, - .suspend = nec_8048_spi_suspend, - .resume = nec_8048_spi_resume, .driver = { .name = "nec_8048_spi", .owner = THIS_MODULE, + .pm = NEC_8048_SPI_PM_OPS, }, }; |