diff options
| author | Mohan Pallaka <mpallaka@codeaurora.org> | 2013-10-24 11:06:54 +0530 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:22:38 -0700 |
| commit | 743d5ec77e1e81df875ddb0e32c7935657271114 (patch) | |
| tree | cce4d5b07a2c7bc9f6f755dc766ada16b1b5c08d /drivers/video | |
| parent | 0991d5ecc3184c3e7def3cd8d4638e0c5e7e98d7 (diff) | |
msm: mdss: Add support for backlight gpio
Backlight gpio is used to support display backlight.
Parse the gpio from dts and request.
Change-Id: I776373029e96526710406f6820472ad9319952c7
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/msm/dsi_v2.c | 21 | ||||
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dsi.h | 1 |
2 files changed, 22 insertions, 0 deletions
diff --git a/drivers/video/fbdev/msm/dsi_v2.c b/drivers/video/fbdev/msm/dsi_v2.c index 65cca0ed5a51..0b93740e3199 100644 --- a/drivers/video/fbdev/msm/dsi_v2.c +++ b/drivers/video/fbdev/msm/dsi_v2.c @@ -173,6 +173,13 @@ static int dsi_parse_gpio(struct platform_device *pdev, pr_info("%s:%d, reset gpio not specified\n", __func__, __LINE__); } + + ctrl_pdata->bklt_en_gpio = of_get_named_gpio(np, + "qcom,platform-bklight-en-gpio", 0); + if (!gpio_is_valid(ctrl_pdata->bklt_en_gpio)) + pr_err("%s:%d, bklt_en gpio not specified\n", + __func__, __LINE__); + return 0; } @@ -228,8 +235,18 @@ int dsi_ctrl_gpio_request(struct mdss_dsi_ctrl_pdata *ctrl_pdata) ctrl_pdata->mode_gpio_requested = 1; } + if (gpio_is_valid(ctrl_pdata->bklt_en_gpio)) { + rc = gpio_request(ctrl_pdata->bklt_en_gpio, "bklt_enable"); + if (rc) + goto gpio_request_err0; + ctrl_pdata->bklt_en_gpio_requested = 1; + } + return rc; +gpio_request_err0: + if (gpio_is_valid(ctrl_pdata->mode_gpio)) + gpio_free(ctrl_pdata->mode_gpio); gpio_request_err1: if (gpio_is_valid(ctrl_pdata->disp_te_gpio)) gpio_free(ctrl_pdata->disp_te_gpio); @@ -265,6 +282,10 @@ void dsi_ctrl_gpio_free(struct mdss_dsi_ctrl_pdata *ctrl_pdata) gpio_free(ctrl_pdata->mode_gpio); ctrl_pdata->mode_gpio_requested = 0; } + if (ctrl_pdata->bklt_en_gpio_requested) { + gpio_free(ctrl_pdata->bklt_en_gpio); + ctrl_pdata->bklt_en_gpio_requested = 0; + } } static int dsi_parse_vreg(struct device *dev, struct dss_module_power *mp) diff --git a/drivers/video/fbdev/msm/mdss_dsi.h b/drivers/video/fbdev/msm/mdss_dsi.h index 460ed2407e04..54e4d49569ff 100644 --- a/drivers/video/fbdev/msm/mdss_dsi.h +++ b/drivers/video/fbdev/msm/mdss_dsi.h @@ -338,6 +338,7 @@ struct mdss_dsi_ctrl_pdata { int disp_en_gpio_requested; int disp_te_gpio_requested; int mode_gpio_requested; + int bklt_en_gpio_requested; int bklt_ctrl; /* backlight ctrl */ int pwm_period; int pwm_pmic_gpio; |