From 0eb0dafb674cd6bfac2e3204b2f8b907e26b1138 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 17 Dec 2013 09:43:04 +0200 Subject: [PATCH] OMAPDSS: panel-acx565akm: clean-up locking The locking in the acx565akm panel driver was getting too complex. Clean it up by making new functions, acx565akm_bl_get_intensity_locked and acx565akm_bl_update_status_locked, which are called by the backlight subsystem. This way the non-locked versions can be called by the panel's other funcs, simplifying the lock management. Signed-off-by: Tomi Valkeinen --- .../omap2/displays-new/panel-sony-acx565akm.c | 44 +++++++++++++++------- 1 file changed, 30 insertions(+), 14 deletions(-) diff --git a/drivers/video/omap2/displays-new/panel-sony-acx565akm.c b/drivers/video/omap2/displays-new/panel-sony-acx565akm.c index d94f35d..8e97d06 100644 --- a/drivers/video/omap2/displays-new/panel-sony-acx565akm.c +++ b/drivers/video/omap2/displays-new/panel-sony-acx565akm.c @@ -346,28 +346,22 @@ static int acx565akm_get_actual_brightness(struct panel_drv_data *ddata) static int acx565akm_bl_update_status(struct backlight_device *dev) { struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); - int r; int level; dev_dbg(&ddata->spi->dev, "%s\n", __func__); - mutex_lock(&ddata->mutex); - if (dev->props.fb_blank == FB_BLANK_UNBLANK && dev->props.power == FB_BLANK_UNBLANK) level = dev->props.brightness; else level = 0; - r = 0; if (ddata->has_bc) acx565akm_set_brightness(ddata, level); else - r = -ENODEV; - - mutex_unlock(&ddata->mutex); + return -ENODEV; - return r; + return 0; } static int acx565akm_bl_get_intensity(struct backlight_device *dev) @@ -390,9 +384,33 @@ static int acx565akm_bl_get_intensity(struct backlight_device *dev) return 0; } +static int acx565akm_bl_update_status_locked(struct backlight_device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); + int r; + + mutex_lock(&ddata->mutex); + r = acx565akm_bl_update_status(dev); + mutex_unlock(&ddata->mutex); + + return r; +} + +static int acx565akm_bl_get_intensity_locked(struct backlight_device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); + int r; + + mutex_lock(&ddata->mutex); + r = acx565akm_bl_get_intensity(dev); + mutex_unlock(&ddata->mutex); + + return r; +} + static const struct backlight_ops acx565akm_bl_ops = { - .get_brightness = acx565akm_bl_get_intensity, - .update_status = acx565akm_bl_update_status, + .get_brightness = acx565akm_bl_get_intensity_locked, + .update_status = acx565akm_bl_update_status_locked, }; /*--------------------Auto Brightness control via Sysfs---------------------*/ @@ -526,8 +544,6 @@ static int acx565akm_panel_power_on(struct omap_dss_device *dssdev) struct omap_dss_device *in = ddata->in; int r; - mutex_lock(&ddata->mutex); - dev_dbg(&ddata->spi->dev, "%s\n", __func__); in->ops.sdi->set_timings(in, &ddata->videomode); @@ -568,8 +584,6 @@ static int acx565akm_panel_power_on(struct omap_dss_device *dssdev) set_display_state(ddata, 1); set_cabc_mode(ddata, ddata->cabc_mode); - mutex_unlock(&ddata->mutex); - return acx565akm_bl_update_status(ddata->bl_dev); } @@ -616,7 +630,9 @@ static int acx565akm_enable(struct omap_dss_device *dssdev) if (omapdss_device_is_enabled(dssdev)) return 0; + mutex_lock(&ddata->mutex); r = acx565akm_panel_power_on(dssdev); + mutex_unlock(&ddata->mutex); if (r) return r; -- 2.7.4