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@xxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/drm/msm/dsi.txt | 7 +++++++
drivers/gpu/drm/msm/dsi/dsi_host.c | 12 ++++++++++++
2 files changed, 19 insertions(+)
diff --git a/Documentation/devicetree/bindings/drm/msm/dsi.txt b/Documentation/devicetree/bindings/drm/msm/dsi.txt
index 6ccd860..4edd6fa 100644
--- a/Documentation/devicetree/bindings/drm/msm/dsi.txt
+++ b/Documentation/devicetree/bindings/drm/msm/dsi.txt
@@ -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>;
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index de04009..69c1397 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -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);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
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