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path: root/drivers/gpu/drm/msm/dsi/dsi_host.c
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Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi_host.c')
-rw-r--r--drivers/gpu/drm/msm/dsi/dsi_host.c120
1 files changed, 68 insertions, 52 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index f97a7803a02d..dbb31a014419 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -32,6 +32,7 @@
#include "dsi.xml.h"
#include "sfpb.xml.h"
#include "dsi_cfg.h"
+#include "msm_kms.h"
static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor)
{
@@ -134,7 +135,6 @@ struct msm_dsi_host {
struct completion video_comp;
struct mutex dev_mutex;
struct mutex cmd_mutex;
- struct mutex clk_mutex;
spinlock_t intr_lock; /* Protect interrupt ctrl register */
u32 err_work_state;
@@ -220,6 +220,8 @@ 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__);
@@ -246,6 +248,7 @@ 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:
@@ -454,6 +457,34 @@ static void dsi_bus_clk_disable(struct msm_dsi_host *msm_host)
clk_disable_unprepare(msm_host->bus_clks[i]);
}
+int msm_dsi_runtime_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
+ struct mipi_dsi_host *host = msm_dsi->host;
+ struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
+
+ if (!msm_host->cfg_hnd)
+ return 0;
+
+ dsi_bus_clk_disable(msm_host);
+
+ return 0;
+}
+
+int msm_dsi_runtime_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
+ struct mipi_dsi_host *host = msm_dsi->host;
+ struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
+
+ if (!msm_host->cfg_hnd)
+ return 0;
+
+ return dsi_bus_clk_enable(msm_host);
+}
+
static int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host)
{
int ret;
@@ -595,35 +626,6 @@ static void dsi_link_clk_disable(struct msm_dsi_host *msm_host)
}
}
-static int dsi_clk_ctrl(struct msm_dsi_host *msm_host, bool enable)
-{
- int ret = 0;
-
- mutex_lock(&msm_host->clk_mutex);
- if (enable) {
- ret = dsi_bus_clk_enable(msm_host);
- if (ret) {
- pr_err("%s: Can not enable bus clk, %d\n",
- __func__, ret);
- goto unlock_ret;
- }
- ret = dsi_link_clk_enable(msm_host);
- if (ret) {
- pr_err("%s: Can not enable link clk, %d\n",
- __func__, ret);
- dsi_bus_clk_disable(msm_host);
- goto unlock_ret;
- }
- } else {
- dsi_link_clk_disable(msm_host);
- dsi_bus_clk_disable(msm_host);
- }
-
-unlock_ret:
- mutex_unlock(&msm_host->clk_mutex);
- return ret;
-}
-
static int dsi_calc_clk_rate(struct msm_dsi_host *msm_host)
{
struct drm_display_mode *mode = msm_host->mode;
@@ -975,23 +977,23 @@ static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host)
static int dsi_tx_buf_alloc(struct msm_dsi_host *msm_host, int size)
{
struct drm_device *dev = msm_host->dev;
+ struct msm_drm_private *priv = dev->dev_private;
const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
int ret;
uint64_t iova;
if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) {
- mutex_lock(&dev->struct_mutex);
msm_host->tx_gem_obj = msm_gem_new(dev, size, MSM_BO_UNCACHED);
if (IS_ERR(msm_host->tx_gem_obj)) {
ret = PTR_ERR(msm_host->tx_gem_obj);
pr_err("%s: failed to allocate gem, %d\n",
__func__, ret);
msm_host->tx_gem_obj = NULL;
- mutex_unlock(&dev->struct_mutex);
return ret;
}
- ret = msm_gem_get_iova_locked(msm_host->tx_gem_obj, 0, &iova);
+ ret = msm_gem_get_iova(msm_host->tx_gem_obj,
+ priv->kms->aspace, &iova);
mutex_unlock(&dev->struct_mutex);
if (ret) {
pr_err("%s: failed to get iova, %d\n", __func__, ret);
@@ -1141,12 +1143,15 @@ static int dsi_long_read_resp(u8 *buf, const struct mipi_dsi_msg *msg)
static int dsi_cmd_dma_tx(struct msm_dsi_host *msm_host, int len)
{
const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
+ struct drm_device *dev = msm_host->dev;
+ struct msm_drm_private *priv = dev->dev_private;
int ret;
uint64_t dma_base;
bool triggered;
if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) {
- ret = msm_gem_get_iova(msm_host->tx_gem_obj, 0, &dma_base);
+ ret = msm_gem_get_iova(msm_host->tx_gem_obj,
+ priv->kms->aspace, &dma_base);
if (ret) {
pr_err("%s: failed to get iova: %d\n", __func__, ret);
return ret;
@@ -1695,6 +1700,7 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
}
msm_host->pdev = pdev;
+ msm_dsi->host = &msm_host->base;
ret = dsi_host_parse_dt(msm_host);
if (ret) {
@@ -1709,6 +1715,8 @@ 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;
@@ -1749,7 +1757,6 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
init_completion(&msm_host->video_comp);
mutex_init(&msm_host->dev_mutex);
mutex_init(&msm_host->cmd_mutex);
- mutex_init(&msm_host->clk_mutex);
spin_lock_init(&msm_host->intr_lock);
/* setup workqueue */
@@ -1757,7 +1764,6 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
INIT_WORK(&msm_host->err_work, dsi_err_worker);
INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker);
- msm_dsi->host = &msm_host->base;
msm_dsi->id = msm_host->id;
DBG("Dsi Host %d initialized", msm_host->id);
@@ -1779,9 +1785,10 @@ void msm_dsi_host_destroy(struct mipi_dsi_host *host)
msm_host->workqueue = NULL;
}
- 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,
@@ -1877,7 +1884,8 @@ 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
*/
- dsi_clk_ctrl(msm_host, 1);
+ pm_runtime_get_sync(&msm_host->pdev->dev);
+ dsi_link_clk_enable(msm_host);
/* TODO: vote for bus bandwidth */
@@ -1907,7 +1915,8 @@ void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
/* TODO: unvote for bus bandwidth */
- dsi_clk_ctrl(msm_host, 0);
+ dsi_link_clk_disable(msm_host);
+ pm_runtime_put_autosuspend(&msm_host->pdev->dev);
}
int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
@@ -2133,6 +2142,13 @@ void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
struct msm_dsi_phy_clk_request *clk_req)
{
struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
+ int ret;
+
+ ret = dsi_calc_clk_rate(msm_host);
+ if (ret) {
+ pr_err("%s: unable to calc clk rate, %d\n", __func__, ret);
+ return;
+ }
clk_req->bitclk_rate = msm_host->byte_clk_rate * 8;
clk_req->escclk_rate = msm_host->esc_clk_rate;
@@ -2149,8 +2165,11 @@ int msm_dsi_host_enable(struct mipi_dsi_host *host)
* and only turned on before MDP START.
* This part of code should be enabled once mdp driver support it.
*/
- /* if (msm_panel->mode == MSM_DSI_CMD_MODE)
- dsi_clk_ctrl(msm_host, 0); */
+ /* if (msm_panel->mode == MSM_DSI_CMD_MODE) {
+ * dsi_link_clk_disable(msm_host);
+ * pm_runtime_put_autosuspend(&msm_host->pdev->dev);
+ * }
+ */
return 0;
}
@@ -2206,9 +2225,11 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host,
goto unlock_ret;
}
- ret = dsi_clk_ctrl(msm_host, 1);
+ pm_runtime_get_sync(&msm_host->pdev->dev);
+ ret = dsi_link_clk_enable(msm_host);
if (ret) {
- pr_err("%s: failed to enable clocks. ret=%d\n", __func__, ret);
+ pr_err("%s: failed to enable link clocks. ret=%d\n",
+ __func__, ret);
goto fail_disable_reg;
}
@@ -2232,7 +2253,8 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host,
return 0;
fail_disable_clk:
- dsi_clk_ctrl(msm_host, 0);
+ dsi_link_clk_disable(msm_host);
+ pm_runtime_put_autosuspend(&msm_host->pdev->dev);
fail_disable_reg:
dsi_host_regulator_disable(msm_host);
unlock_ret:
@@ -2257,7 +2279,8 @@ 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);
+ dsi_link_clk_disable(msm_host);
+ pm_runtime_put_autosuspend(&msm_host->pdev->dev);
dsi_host_regulator_disable(msm_host);
@@ -2276,7 +2299,6 @@ int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
struct drm_display_mode *mode)
{
struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
- int ret;
if (msm_host->mode) {
drm_mode_destroy(msm_host->dev, msm_host->mode);
@@ -2289,12 +2311,6 @@ int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
return -ENOMEM;
}
- ret = dsi_calc_clk_rate(msm_host);
- if (ret) {
- pr_err("%s: unable to calc clk rate, %d\n", __func__, ret);
- return ret;
- }
-
return 0;
}
generated by cgit v1.2.3 (git 2.51.0) at 2025-09-18 05:03:37 +0000