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drm/msm/hdmi: enable lpm-mux if it is present

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lpm-mux is programmed to enable HDMI connector
on the docking station for S805 chipset based
devices.

Signed-off-by: Beeresh Gopal <gbeeresh@codeaurora.org>
Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Beeresh Gopal 2014-07-31 11:48:49 -04:00 committed by Rob Clark
parent 3d47fd47f2
commit 1930f38a5d
3 changed files with 23 additions and 0 deletions
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1
drivers/gpu/drm/msm/hdmi/hdmi.c
View File

@ -317,6 +317,7 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data)
config.hpd_gpio = get_gpio("qcom,hdmi-tx-hpd");
config.mux_en_gpio = get_gpio("qcom,hdmi-tx-mux-en");
config.mux_sel_gpio = get_gpio("qcom,hdmi-tx-mux-sel");
config.mux_lpm_gpio = get_gpio("qcom,hdmi-tx-mux-lpm");
#else
static const char *hpd_clk_names[] = {

1
drivers/gpu/drm/msm/hdmi/hdmi.h
View File

@ -96,6 +96,7 @@ struct hdmi_platform_config {
/* gpio's: */
int ddc_clk_gpio, ddc_data_gpio, hpd_gpio, mux_en_gpio, mux_sel_gpio;
int mux_lpm_gpio;
/* older devices had their own irq, mdp5+ it is shared w/ mdp: */
bool shared_irq;

21
drivers/gpu/drm/msm/hdmi/hdmi_connector.c
View File

@ -78,6 +78,19 @@ static int gpio_config(struct hdmi *hdmi, bool on)
}
gpio_set_value_cansleep(config->mux_sel_gpio, 0);
}
if (config->mux_lpm_gpio != -1) {
ret = gpio_request(config->mux_lpm_gpio,
"HDMI_MUX_LPM");
if (ret) {
dev_err(dev->dev,
"'%s'(%d) gpio_request failed: %d\n",
"HDMI_MUX_LPM",
config->mux_lpm_gpio, ret);
goto error6;
}
gpio_set_value_cansleep(config->mux_lpm_gpio, 1);
}
DBG("gpio on");
} else {
gpio_free(config->ddc_clk_gpio);
@ -93,11 +106,19 @@ static int gpio_config(struct hdmi *hdmi, bool on)
gpio_set_value_cansleep(config->mux_sel_gpio, 1);
gpio_free(config->mux_sel_gpio);
}
if (config->mux_lpm_gpio != -1) {
gpio_set_value_cansleep(config->mux_lpm_gpio, 0);
gpio_free(config->mux_lpm_gpio);
}
DBG("gpio off");
}
return 0;
error6:
if (config->mux_sel_gpio != -1)
gpio_free(config->mux_sel_gpio);
error5:
if (config->mux_en_gpio != -1)
gpio_free(config->mux_en_gpio);