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authorArchit Taneja <architt@codeaurora.org>2017-07-28 16:17:03 +0530
committerRob Clark <robdclark@gmail.com>2017-08-02 07:53:46 -0400
commitf6be1121ea8aa563f5a651cf5a96742c965a95f7 (patch)
tree9a941c42154d13780f31206467c95f124d8d8f95 /drivers/gpu/drm/msm/dsi/dsi_host.c
parent6ed9ed484d04c2f6db0f68b0a31ef24db27d6454 (diff)
drm/msm/dsi: Set up runtime PM for DSI
Call the pm_runtime_get/put API where we need the clocks enabled. The main entry/exit points are 1) enabling/disabling the DSI bridge and 2) Sending commands from the DSI host to the device. Signed-off-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi_host.c')
-rw-r--r--drivers/gpu/drm/msm/dsi/dsi_host.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index c7b612c3d771..da0913a33ca0 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -221,6 +221,8 @@ static const struct msm_dsi_cfg_handler *dsi_get_config(
goto put_gdsc;
}
+ pm_runtime_get_sync(dev);
+
ret = regulator_enable(gdsc_reg);
if (ret) {
pr_err("%s: unable to enable gdsc\n", __func__);
@@ -247,6 +249,7 @@ disable_clks:
clk_disable_unprepare(ahb_clk);
disable_gdsc:
regulator_disable(gdsc_reg);
+ pm_runtime_put_autosuspend(dev);
put_clk:
clk_put(ahb_clk);
put_gdsc:
@@ -1713,6 +1716,8 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
goto fail;
}
+ pm_runtime_enable(&pdev->dev);
+
msm_host->cfg_hnd = dsi_get_config(msm_host);
if (!msm_host->cfg_hnd) {
ret = -EINVAL;
@@ -1786,6 +1791,8 @@ void msm_dsi_host_destroy(struct mipi_dsi_host *host)
mutex_destroy(&msm_host->clk_mutex);
mutex_destroy(&msm_host->cmd_mutex);
mutex_destroy(&msm_host->dev_mutex);
+
+ pm_runtime_disable(&msm_host->pdev->dev);
}
int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
@@ -1881,6 +1888,7 @@ int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
* mdss interrupt is generated in mdp core clock domain
* mdp clock need to be enabled to receive dsi interrupt
*/
+ pm_runtime_get_sync(&msm_host->pdev->dev);
dsi_clk_ctrl(msm_host, 1);
/* TODO: vote for bus bandwidth */
@@ -1912,6 +1920,7 @@ void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
/* TODO: unvote for bus bandwidth */
dsi_clk_ctrl(msm_host, 0);
+ pm_runtime_put_autosuspend(&msm_host->pdev->dev);
}
int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
@@ -2217,6 +2226,7 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host,
goto unlock_ret;
}
+ pm_runtime_get_sync(&msm_host->pdev->dev);
ret = dsi_clk_ctrl(msm_host, 1);
if (ret) {
pr_err("%s: failed to enable clocks. ret=%d\n", __func__, ret);
@@ -2269,6 +2279,7 @@ int msm_dsi_host_power_off(struct mipi_dsi_host *host)
pinctrl_pm_select_sleep_state(&msm_host->pdev->dev);
dsi_clk_ctrl(msm_host, 0);
+ pm_runtime_put_autosuspend(&msm_host->pdev->dev);
dsi_host_regulator_disable(msm_host);