[PATCH 3/7] drm/msm/dsi: drop unused GPIOs handling

[Dmitry Baryshkov]

Neither disp-enable-gpios nor disp-te-gpios are defined in the schema.
None of the board DT files use those GPIO pins. Drop them from the
driver.

Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 37 -------------------------------------
 1 file changed, 37 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c 
b/drivers/gpu/drm/msm/dsi/dsi_host.c
index a50f4dda5941..c4d72562c95a 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -7,7 +7,6 @@
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
-#include <linux/gpio/consumer.h>
 #include <linux/interrupt.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of.h>
@@ -130,9 +129,6 @@ struct msm_dsi_host {
 
        unsigned long src_clk_rate;
 
-       struct gpio_desc *disp_en_gpio;
-       struct gpio_desc *te_gpio;
-
        const struct msm_dsi_cfg_handler *cfg_hnd;
 
        struct completion dma_comp;
@@ -1613,28 +1609,6 @@ static irqreturn_t dsi_host_irq(int irq, void *ptr)
        return IRQ_HANDLED;
 }
 
-static int dsi_host_init_panel_gpios(struct msm_dsi_host *msm_host,
-                       struct device *panel_device)
-{
-       msm_host->disp_en_gpio = devm_gpiod_get_optional(panel_device,
-                                                        "disp-enable",
-                                                        GPIOD_OUT_LOW);
-       if (IS_ERR(msm_host->disp_en_gpio)) {
-               DBG("cannot get disp-enable-gpios %ld",
-                               PTR_ERR(msm_host->disp_en_gpio));
-               return PTR_ERR(msm_host->disp_en_gpio);
-       }
-
-       msm_host->te_gpio = devm_gpiod_get_optional(panel_device, "disp-te",
-                                                               GPIOD_IN);
-       if (IS_ERR(msm_host->te_gpio)) {
-               DBG("cannot get disp-te-gpios %ld", PTR_ERR(msm_host->te_gpio));
-               return PTR_ERR(msm_host->te_gpio);
-       }
-
-       return 0;
-}
-
 static int dsi_host_attach(struct mipi_dsi_host *host,
                                        struct mipi_dsi_device *dsi)
 {
@@ -1651,11 +1625,6 @@ static int dsi_host_attach(struct mipi_dsi_host *host,
        if (dsi->dsc)
                msm_host->dsc = dsi->dsc;
 
-       /* Some gpios defined in panel DT need to be controlled by host */
-       ret = dsi_host_init_panel_gpios(msm_host, &dsi->dev);
-       if (ret)
-               return ret;
-
        ret = dsi_dev_attach(msm_host->pdev);
        if (ret)
                return ret;
@@ -2422,9 +2391,6 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host,
        dsi_sw_reset(msm_host);
        dsi_ctrl_enable(msm_host, phy_shared_timings, phy);
 
-       if (msm_host->disp_en_gpio)
-               gpiod_set_value(msm_host->disp_en_gpio, 1);
-
        msm_host->power_on = true;
        mutex_unlock(&msm_host->dev_mutex);
 
@@ -2454,9 +2420,6 @@ int msm_dsi_host_power_off(struct mipi_dsi_host *host)
 
        dsi_ctrl_disable(msm_host);
 
-       if (msm_host->disp_en_gpio)
-               gpiod_set_value(msm_host->disp_en_gpio, 0);
-
        pinctrl_pm_select_sleep_state(&msm_host->pdev->dev);
 
        cfg_hnd->ops->link_clk_disable(msm_host);

-- 
2.39.2