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drm/msm/dsi: Use pinctrl in DSI driver 

Some targets use pinctrl framework to configure some
pins. This change allows DSI driver to set default and
sleep pinctrl status.

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Hai Li 2015-06-11 10:56:46 -04:00 committed by Rob Clark
parent 678565c3cb
commit ab8909b032
2 changed files with 19 additions and 0 deletions
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7
Documentation/devicetree/bindings/drm/msm/dsi.txt
View File

@ -38,6 +38,9 @@ Optional properties:
driving a 2-DSI panel whose 2 links need receive command simultaneously.
- interrupt-parent: phandle to the MDP block if the interrupt signal is routed
through MDP block
- pinctrl-names: the pin control state names; should contain "default"
- pinctrl-0: the default pinctrl state (active)
- pinctrl-n: the "sleep" pinctrl state
DSI PHY:
Required properties:
@ -94,6 +97,10 @@ Example:
qcom,master-dsi;
qcom,sync-dual-dsi;
pinctrl-names = "default", "sleep";
pinctrl-0 = <&mdss_dsi_active>;
pinctrl-1 = <&mdss_dsi_suspend>;
panel: panel@0 {
compatible = "sharp,lq101r1sx01";
reg = <0>;

12
drivers/gpu/drm/msm/dsi/dsi_host.c
View File

@ -20,6 +20,7 @@
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/pinctrl/consumer.h>
#include <linux/regulator/consumer.h>
#include <linux/spinlock.h>
#include <video/mipi_display.h>
@ -1919,6 +1920,13 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host)
goto fail_disable_reg;
}
ret = pinctrl_pm_select_default_state(&msm_host->pdev->dev);
if (ret) {
pr_err("%s: failed to set pinctrl default state, %d\n",
__func__, ret);
goto fail_disable_clk;
}
dsi_timing_setup(msm_host);
dsi_sw_reset(msm_host);
dsi_ctrl_config(msm_host, true, clk_pre, clk_post);
@ -1931,6 +1939,8 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host)
return 0;
fail_disable_clk:
dsi_clk_ctrl(msm_host, 0);
fail_disable_reg:
dsi_host_regulator_disable(msm_host);
unlock_ret:
@ -1953,6 +1963,8 @@ int msm_dsi_host_power_off(struct mipi_dsi_host *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);
msm_dsi_manager_phy_disable(msm_host->id);
dsi_clk_ctrl(msm_host, 0);