diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dsi.c | 3 | ||||
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dsi.h | 1 | ||||
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dsi_panel.c | 120 |
3 files changed, 82 insertions, 42 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dsi.c b/drivers/video/fbdev/msm/mdss_dsi.c index 8aca639bfb61..c7cac996e5c0 100644 --- a/drivers/video/fbdev/msm/mdss_dsi.c +++ b/drivers/video/fbdev/msm/mdss_dsi.c @@ -4364,6 +4364,9 @@ int dsi_panel_device_register(struct platform_device *ctrl_pdev, return rc; } + /* default state of gpio is false */ + ctrl_pdata->bklt_en_gpio_state = false; + pinfo->panel_max_fps = mdss_panel_get_framerate(pinfo); pinfo->panel_max_vtotal = mdss_panel_get_vtotal(pinfo); diff --git a/drivers/video/fbdev/msm/mdss_dsi.h b/drivers/video/fbdev/msm/mdss_dsi.h index 335037860ffe..62d88f0af652 100644 --- a/drivers/video/fbdev/msm/mdss_dsi.h +++ b/drivers/video/fbdev/msm/mdss_dsi.h @@ -454,6 +454,7 @@ struct mdss_dsi_ctrl_pdata { int disp_en_gpio; int bklt_en_gpio; bool bklt_en_gpio_invert; + bool bklt_en_gpio_state; int lcd_mode_sel_gpio; int bklt_ctrl; /* backlight ctrl */ bool pwm_pmi; diff --git a/drivers/video/fbdev/msm/mdss_dsi_panel.c b/drivers/video/fbdev/msm/mdss_dsi_panel.c index 9faa1531c256..60012c71449c 100644 --- a/drivers/video/fbdev/msm/mdss_dsi_panel.c +++ b/drivers/video/fbdev/msm/mdss_dsi_panel.c @@ -260,16 +260,6 @@ static int mdss_dsi_request_gpios(struct mdss_dsi_ctrl_pdata *ctrl_pdata) rc); goto rst_gpio_err; } - if (gpio_is_valid(ctrl_pdata->bklt_en_gpio)) { - rc = gpio_request(ctrl_pdata->bklt_en_gpio, - "bklt_enable"); - if (rc) { - pr_err("request bklt gpio failed, rc=%d\n", - rc); - goto bklt_en_gpio_err; - } - } - if (gpio_is_valid(ctrl_pdata->lcd_mode_sel_gpio)) { rc = gpio_request(ctrl_pdata->lcd_mode_sel_gpio, "mode_sel"); if (rc) { @@ -282,9 +272,6 @@ static int mdss_dsi_request_gpios(struct mdss_dsi_ctrl_pdata *ctrl_pdata) return rc; lcd_mode_sel_gpio_err: - if (gpio_is_valid(ctrl_pdata->bklt_en_gpio)) - gpio_free(ctrl_pdata->bklt_en_gpio); -bklt_en_gpio_err: gpio_free(ctrl_pdata->rst_gpio); rst_gpio_err: if (gpio_is_valid(ctrl_pdata->disp_en_gpio)) @@ -293,6 +280,81 @@ disp_en_gpio_err: return rc; } +int mdss_dsi_bl_gpio_ctrl(struct mdss_panel_data *pdata, int enable) +{ + struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL; + int rc = 0, val = 0; + + if (pdata == NULL) { + pr_err("%s: Invalid input data\n", __func__); + return -EINVAL; + } + + ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata, + panel_data); + if (ctrl_pdata == NULL) { + pr_err("%s: Invalid ctrl data\n", __func__); + return -EINVAL; + } + + /* if gpio is not valid */ + if (!gpio_is_valid(ctrl_pdata->bklt_en_gpio)) + return rc; + + pr_debug("%s: enable = %d\n", __func__, enable); + + /* + * if gpio state is false and enable (bl level) is + * non zero then toggle the gpio + */ + if (!ctrl_pdata->bklt_en_gpio_state && enable) { + rc = gpio_request(ctrl_pdata->bklt_en_gpio, "bklt_enable"); + if (rc) { + pr_err("request bklt gpio failed, rc=%d\n", rc); + goto free; + } + + if (ctrl_pdata->bklt_en_gpio_invert) + val = 0; + else + val = 1; + + rc = gpio_direction_output(ctrl_pdata->bklt_en_gpio, val); + if (rc) { + pr_err("%s: unable to set dir for bklt gpio val %d\n", + __func__, val); + goto free; + } + ctrl_pdata->bklt_en_gpio_state = true; + goto ret; + } else if (ctrl_pdata->bklt_en_gpio_state && !enable) { + /* + * if gpio state is true and enable (bl level) is + * zero then toggle the gpio + */ + if (ctrl_pdata->bklt_en_gpio_invert) + val = 1; + else + val = 0; + + rc = gpio_direction_output(ctrl_pdata->bklt_en_gpio, val); + if (rc) + pr_err("%s: unable to set dir for bklt gpio val %d\n", + __func__, val); + goto free; + } + + /* gpio state is true and bl level is non zero */ + goto ret; + +free: + pr_debug("%s: free bklt gpio\n", __func__); + ctrl_pdata->bklt_en_gpio_state = false; + gpio_free(ctrl_pdata->bklt_en_gpio); +ret: + return rc; +} + int mdss_dsi_panel_reset(struct mdss_panel_data *pdata, int enable) { struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL; @@ -362,26 +424,6 @@ int mdss_dsi_panel_reset(struct mdss_panel_data *pdata, int enable) if (pdata->panel_info.rst_seq[++i]) usleep_range(pinfo->rst_seq[i] * 1000, pinfo->rst_seq[i] * 1000); } - - if (gpio_is_valid(ctrl_pdata->bklt_en_gpio)) { - - if (ctrl_pdata->bklt_en_gpio_invert) { - rc = gpio_direction_output( - ctrl_pdata->bklt_en_gpio, 0); - gpio_set_value( - (ctrl_pdata->bklt_en_gpio), 0); - } else { - rc = gpio_direction_output( - ctrl_pdata->bklt_en_gpio, 1); - gpio_set_value( - (ctrl_pdata->bklt_en_gpio), 1); - } - if (rc) { - pr_err("%s: unable to set dir for bklt gpio\n", - __func__); - goto exit; - } - } } if (gpio_is_valid(ctrl_pdata->lcd_mode_sel_gpio)) { @@ -410,15 +452,6 @@ int mdss_dsi_panel_reset(struct mdss_panel_data *pdata, int enable) pr_debug("%s: Reset panel done\n", __func__); } } else { - if (gpio_is_valid(ctrl_pdata->bklt_en_gpio)) { - - if (ctrl_pdata->bklt_en_gpio_invert) - gpio_set_value((ctrl_pdata->bklt_en_gpio), 1); - else - gpio_set_value((ctrl_pdata->bklt_en_gpio), 0); - - gpio_free(ctrl_pdata->bklt_en_gpio); - } if (gpio_is_valid(ctrl_pdata->disp_en_gpio)) { gpio_set_value((ctrl_pdata->disp_en_gpio), 0); gpio_free(ctrl_pdata->disp_en_gpio); @@ -801,6 +834,9 @@ static void mdss_dsi_panel_bl_ctrl(struct mdss_panel_data *pdata, if ((bl_level < pdata->panel_info.bl_min) && (bl_level != 0)) bl_level = pdata->panel_info.bl_min; + /* enable the backlight gpio if present */ + mdss_dsi_bl_gpio_ctrl(pdata, bl_level); + switch (ctrl_pdata->bklt_ctrl) { case BL_WLED: led_trigger_event(bl_led_trigger, bl_level); |