MDSS and dpu drivers manage their respective clocks via runtime_pm. Remove custom clock management code from dpu_power_handle.
Also dpu core clock management code is restricted to dpu_core_perf module.
Changes in v2: - remove local variable to hold and return error code in _dpu_core_perf_set_core_clk_rate() instead return retcode directly from msm_dss_clk_set_rate() call (Sean Paul) - dpu_core_perf_init() is called from dpu_kms_hw_init() and most of the params passed are already validated so remove redundant checks from dpu_core_perf_init() (Sean Paul) - return &mp->clk_config[i] directly to avoid local variable in _dpu_kms_get_clk() (Sean Paul) - invert conditional check to eliminate local rate variable from dpu_kms_get_clk_rate() (Sean Paul) - remove end label from dpu_power_resource_init() and return directly on dpu_power_parse_dt_supply() failure as no cleanup is needed (Sean Paul) - remove checks for vtotal and vrefresh from dpu_encoder_phys_cmd_tearcheck_config() as they should be valid in mode_set call (Sean Paul)
Signed-off-by: Rajesh Yadav ryadav@codeaurora.org --- drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 41 ++--- drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h | 8 +- .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 9 +- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 28 ++- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 9 + drivers/gpu/drm/msm/dpu_power_handle.c | 196 +-------------------- drivers/gpu/drm/msm/dpu_power_handle.h | 40 ----- 7 files changed, 63 insertions(+), 268 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c index 981f77f..5b79077 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c @@ -365,6 +365,17 @@ void dpu_core_perf_crtc_release_bw(struct drm_crtc *crtc) } }
+static int _dpu_core_perf_set_core_clk_rate(struct dpu_kms *kms, u64 rate) +{ + struct dss_clk *core_clk = kms->perf.core_clk; + + if (core_clk->max_rate && (rate > core_clk->max_rate)) + rate = core_clk->max_rate; + + core_clk->rate = rate; + return msm_dss_clk_set_rate(core_clk, 1); +} + static u64 _dpu_core_perf_get_core_clk_rate(struct dpu_kms *kms) { u64 clk_rate = kms->perf.perf_tune.min_core_clk; @@ -376,7 +387,8 @@ static u64 _dpu_core_perf_get_core_clk_rate(struct dpu_kms *kms) dpu_cstate = to_dpu_crtc_state(crtc->state); clk_rate = max(dpu_cstate->new_perf.core_clk_rate, clk_rate); - clk_rate = clk_round_rate(kms->perf.core_clk, clk_rate); + clk_rate = clk_round_rate(kms->perf.core_clk->clk, + clk_rate); } }
@@ -484,15 +496,11 @@ void dpu_core_perf_crtc_update(struct drm_crtc *crtc,
DPU_EVT32(kms->dev, stop_req, clk_rate);
- /* Temp change to avoid crash in clk_set_rate API. */ -#ifdef QCOM_DPU_SET_CLK - if (dpu_power_clk_set_rate(&priv->phandle, - kms->perf.clk_name, clk_rate)) { + if (_dpu_core_perf_set_core_clk_rate(kms, clk_rate)) { DPU_ERROR("failed to set %s clock rate %llu\n", - kms->perf.clk_name, clk_rate); + kms->perf.core_clk->clk_name, clk_rate); return; } -#endif
kms->perf.core_clk_rate = clk_rate; DPU_DEBUG("update clk rate = %lld HZ\n", clk_rate); @@ -656,7 +664,6 @@ void dpu_core_perf_destroy(struct dpu_core_perf *perf) dpu_core_perf_debugfs_destroy(perf); perf->max_core_clk_rate = 0; perf->core_clk = NULL; - perf->clk_name = NULL; perf->phandle = NULL; perf->catalog = NULL; perf->dev = NULL; @@ -667,9 +674,9 @@ int dpu_core_perf_init(struct dpu_core_perf *perf, struct dpu_mdss_cfg *catalog, struct dpu_power_handle *phandle, struct dpu_power_client *pclient, - char *clk_name) + struct dss_clk *core_clk) { - if (!perf || !dev || !catalog || !phandle || !pclient || !clk_name) { + if (!pclient) { DPU_ERROR("invalid parameters\n"); return -EINVAL; } @@ -678,23 +685,13 @@ int dpu_core_perf_init(struct dpu_core_perf *perf, perf->catalog = catalog; perf->phandle = phandle; perf->pclient = pclient; - perf->clk_name = clk_name; - - perf->core_clk = dpu_power_clk_get_clk(phandle, clk_name); - if (!perf->core_clk) { - DPU_ERROR("invalid core clk\n"); - goto err; - } + perf->core_clk = core_clk;
- perf->max_core_clk_rate = dpu_power_clk_get_max_rate(phandle, clk_name); + perf->max_core_clk_rate = core_clk->max_rate; if (!perf->max_core_clk_rate) { DPU_DEBUG("optional max core clk rate, use default\n"); perf->max_core_clk_rate = DPU_PERF_DEFAULT_MAX_CORE_CLK_RATE; }
return 0; - -err: - dpu_core_perf_destroy(perf); - return -ENODEV; } diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h index 1965ff5..9c1a719 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h @@ -54,7 +54,6 @@ struct dpu_core_perf_tune { * @catalog: Pointer to catalog configuration * @phandle: Pointer to power handler * @pclient: Pointer to power client - * @clk_name: core clock name * @core_clk: Pointer to core clock structure * @core_clk_rate: current core clock rate * @max_core_clk_rate: maximum allowable core clock rate @@ -70,8 +69,7 @@ struct dpu_core_perf { struct dpu_mdss_cfg *catalog; struct dpu_power_handle *phandle; struct dpu_power_client *pclient; - char *clk_name; - struct clk *core_clk; + struct dss_clk *core_clk; u64 core_clk_rate; u64 max_core_clk_rate; struct dpu_core_perf_tune perf_tune; @@ -118,14 +116,14 @@ void dpu_core_perf_crtc_update(struct drm_crtc *crtc, * @catalog: Pointer to catalog * @phandle: Pointer to power handle * @pclient: Pointer to power client - * @clk_name: core clock name + * @core_clk: pointer to core clock */ int dpu_core_perf_init(struct dpu_core_perf *perf, struct drm_device *dev, struct dpu_mdss_cfg *catalog, struct dpu_power_handle *phandle, struct dpu_power_client *pclient, - char *clk_name); + struct dss_clk *core_clk);
/** * dpu_core_perf_debugfs_init - initialize debugfs for core performance context diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c index 072939c..388de38 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c @@ -428,11 +428,10 @@ static void dpu_encoder_phys_cmd_tearcheck_config( * vsync_count is ratio of MDP VSYNC clock frequency to LCD panel * frequency divided by the no. of rows (lines) in the LCDpanel. */ - vsync_hz = dpu_power_clk_get_rate(&priv->phandle, "vsync_clk"); - if (!vsync_hz || !mode->vtotal || !mode->vrefresh) { - DPU_DEBUG_CMDENC(cmd_enc, - "invalid params - vsync_hz %u vtot %u vrefresh %u\n", - vsync_hz, mode->vtotal, mode->vrefresh); + vsync_hz = dpu_kms_get_clk_rate(dpu_kms, "vsync_clk"); + if (vsync_hz <= 0) { + DPU_DEBUG_CMDENC(cmd_enc, "invalid - vsync_hz %u\n", + vsync_hz); return; }
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index cda4d12..349bda5 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -1499,6 +1499,31 @@ static int _dpu_kms_mmu_init(struct dpu_kms *dpu_kms) return ret; }
+static struct dss_clk *_dpu_kms_get_clk(struct dpu_kms *dpu_kms, + char *clock_name) +{ + struct dss_module_power *mp = &dpu_kms->mp; + int i; + + for (i = 0; i < mp->num_clk; i++) { + if (!strcmp(mp->clk_config[i].clk_name, clock_name)) + return &mp->clk_config[i]; + } + + return NULL; +} + +u64 dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name) +{ + struct dss_clk *clk; + + clk = _dpu_kms_get_clk(dpu_kms, clock_name); + if (!clk) + return -EINVAL; + + return clk_get_rate(clk->clk); +} + static void dpu_kms_handle_power_event(u32 event_type, void *usr) { struct dpu_kms *dpu_kms = usr; @@ -1696,7 +1721,8 @@ static int dpu_kms_hw_init(struct msm_kms *kms) #endif
rc = dpu_core_perf_init(&dpu_kms->perf, dev, dpu_kms->catalog, - &priv->phandle, priv->pclient, "core_clk"); + &priv->phandle, priv->pclient, + _dpu_kms_get_clk(dpu_kms, "core_clk")); if (rc) { DPU_ERROR("failed to init perf %d\n", rc); goto perf_err; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h index 3c69921..a8255fe 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h @@ -537,4 +537,13 @@ struct dpu_kms_fbo *dpu_kms_fbo_alloc(struct drm_device *dev,
void dpu_kms_encoder_enable(struct drm_encoder *encoder);
+/** + * dpu_kms_get_clk_rate() - get the clock rate + * @dpu_kms: poiner to dpu_kms structure + * @clock_name: clock name to get the rate + * + * Return: current clock rate + */ +u64 dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name); + #endif /* __dpu_kms_H__ */ diff --git a/drivers/gpu/drm/msm/dpu_power_handle.c b/drivers/gpu/drm/msm/dpu_power_handle.c index e9e344a..12602ae 100644 --- a/drivers/gpu/drm/msm/dpu_power_handle.c +++ b/drivers/gpu/drm/msm/dpu_power_handle.c @@ -13,7 +13,6 @@
#define pr_fmt(fmt) "[drm:%s:%d]: " fmt, __func__, __LINE__
-#include <linux/clk.h> #include <linux/kernel.h> #include <linux/of.h> #include <linux/string.h> @@ -246,62 +245,6 @@ static int dpu_power_parse_dt_supply(struct platform_device *pdev, return rc; }
-static int dpu_power_parse_dt_clock(struct platform_device *pdev, - struct dss_module_power *mp) -{ - u32 i = 0, rc = 0; - const char *clock_name; - u32 clock_rate = 0; - u32 clock_max_rate = 0; - int num_clk = 0; - - if (!pdev || !mp) { - pr_err("invalid input param pdev:%pK mp:%pK\n", pdev, mp); - return -EINVAL; - } - - mp->num_clk = 0; - num_clk = of_property_count_strings(pdev->dev.of_node, - "clock-names"); - if (num_clk <= 0) { - pr_debug("clocks are not defined\n"); - goto clk_err; - } - - mp->num_clk = num_clk; - mp->clk_config = devm_kzalloc(&pdev->dev, - sizeof(struct dss_clk) * num_clk, GFP_KERNEL); - if (!mp->clk_config) { - rc = -ENOMEM; - mp->num_clk = 0; - goto clk_err; - } - - for (i = 0; i < num_clk; i++) { - of_property_read_string_index(pdev->dev.of_node, "clock-names", - i, &clock_name); - strlcpy(mp->clk_config[i].clk_name, clock_name, - sizeof(mp->clk_config[i].clk_name)); - - of_property_read_u32_index(pdev->dev.of_node, "clock-rate", - i, &clock_rate); - mp->clk_config[i].rate = clock_rate; - - if (!clock_rate) - mp->clk_config[i].type = DSS_CLK_AHB; - else - mp->clk_config[i].type = DSS_CLK_PCLK; - - clock_max_rate = 0; - of_property_read_u32_index(pdev->dev.of_node, "clock-max-rate", - i, &clock_max_rate); - mp->clk_config[i].max_rate = clock_max_rate; - } - -clk_err: - return rc; -} - #ifdef CONFIG_QCOM_BUS_SCALING
#define MAX_AXI_PORT_COUNT 3 @@ -681,16 +624,10 @@ int dpu_power_resource_init(struct platform_device *pdev, mp = &phandle->mp; phandle->dev = &pdev->dev;
- rc = dpu_power_parse_dt_clock(pdev, mp); - if (rc) { - pr_err("device clock parsing failed\n"); - goto end; - } - rc = dpu_power_parse_dt_supply(pdev, mp); if (rc) { pr_err("device vreg supply parsing failed\n"); - goto parse_vreg_err; + return rc; }
rc = msm_dss_config_vreg(&pdev->dev, @@ -700,18 +637,6 @@ int dpu_power_resource_init(struct platform_device *pdev, goto vreg_err; }
- rc = msm_dss_get_clk(&pdev->dev, mp->clk_config, mp->num_clk); - if (rc) { - pr_err("clock get failed rc=%d\n", rc); - goto clk_err; - } - - rc = msm_dss_clk_set_rate(mp->clk_config, mp->num_clk); - if (rc) { - pr_err("clock set rate failed rc=%d\n", rc); - goto bus_err; - } - rc = dpu_power_reg_bus_parse(pdev, phandle); if (rc) { pr_err("register bus parse failed rc=%d\n", rc); @@ -742,18 +667,11 @@ int dpu_power_resource_init(struct platform_device *pdev, dpu_power_data_bus_unregister(&phandle->data_bus_handle[i]); dpu_power_reg_bus_unregister(phandle->reg_bus_hdl); bus_err: - msm_dss_put_clk(mp->clk_config, mp->num_clk); -clk_err: msm_dss_config_vreg(&pdev->dev, mp->vreg_config, mp->num_vreg, 0); vreg_err: if (mp->vreg_config) devm_kfree(&pdev->dev, mp->vreg_config); mp->num_vreg = 0; -parse_vreg_err: - if (mp->clk_config) - devm_kfree(&pdev->dev, mp->clk_config); - mp->num_clk = 0; -end: return rc; }
@@ -796,19 +714,12 @@ void dpu_power_resource_deinit(struct platform_device *pdev,
dpu_power_reg_bus_unregister(phandle->reg_bus_hdl);
- msm_dss_put_clk(mp->clk_config, mp->num_clk); - msm_dss_config_vreg(&pdev->dev, mp->vreg_config, mp->num_vreg, 0);
- if (mp->clk_config) - devm_kfree(&pdev->dev, mp->clk_config); - if (mp->vreg_config) devm_kfree(&pdev->dev, mp->vreg_config);
mp->num_vreg = 0; - mp->num_clk = 0; - }
int dpu_power_resource_enable(struct dpu_power_handle *phandle, @@ -885,12 +796,6 @@ int dpu_power_resource_enable(struct dpu_power_handle *phandle, goto reg_bus_hdl_err; }
- rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, enable); - if (rc) { - pr_err("clock enable failed rc:%d\n", rc); - goto clk_err; - } - dpu_power_event_trigger_locked(phandle, DPU_POWER_EVENT_POST_ENABLE);
@@ -898,8 +803,6 @@ int dpu_power_resource_enable(struct dpu_power_handle *phandle, dpu_power_event_trigger_locked(phandle, DPU_POWER_EVENT_PRE_DISABLE);
- msm_dss_enable_clk(mp->clk_config, mp->num_clk, enable); - dpu_power_reg_bus_update(phandle->reg_bus_hdl, max_usecase_ndx);
@@ -917,8 +820,6 @@ int dpu_power_resource_enable(struct dpu_power_handle *phandle, mutex_unlock(&phandle->phandle_lock); return rc;
-clk_err: - dpu_power_reg_bus_update(phandle->reg_bus_hdl, prev_usecase_ndx); reg_bus_hdl_err: msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg, 0); vreg_err: @@ -930,101 +831,6 @@ int dpu_power_resource_enable(struct dpu_power_handle *phandle, return rc; }
-int dpu_power_clk_set_rate(struct dpu_power_handle *phandle, char *clock_name, - u64 rate) -{ - int i, rc = -EINVAL; - struct dss_module_power *mp; - - if (!phandle) { - pr_err("invalid input power handle\n"); - return -EINVAL; - } - mp = &phandle->mp; - - for (i = 0; i < mp->num_clk; i++) { - if (!strcmp(mp->clk_config[i].clk_name, clock_name)) { - if (mp->clk_config[i].max_rate && - (rate > mp->clk_config[i].max_rate)) - rate = mp->clk_config[i].max_rate; - - mp->clk_config[i].rate = rate; - rc = msm_dss_clk_set_rate(mp->clk_config, mp->num_clk); - break; - } - } - - return rc; -} - -u64 dpu_power_clk_get_rate(struct dpu_power_handle *phandle, char *clock_name) -{ - int i; - struct dss_module_power *mp; - u64 rate = -EINVAL; - - if (!phandle) { - pr_err("invalid input power handle\n"); - return -EINVAL; - } - mp = &phandle->mp; - - for (i = 0; i < mp->num_clk; i++) { - if (!strcmp(mp->clk_config[i].clk_name, clock_name)) { - rate = clk_get_rate(mp->clk_config[i].clk); - break; - } - } - - return rate; -} - -u64 dpu_power_clk_get_max_rate(struct dpu_power_handle *phandle, - char *clock_name) -{ - int i; - struct dss_module_power *mp; - u64 rate = 0; - - if (!phandle) { - pr_err("invalid input power handle\n"); - return 0; - } - mp = &phandle->mp; - - for (i = 0; i < mp->num_clk; i++) { - if (!strcmp(mp->clk_config[i].clk_name, clock_name)) { - rate = mp->clk_config[i].max_rate; - break; - } - } - - return rate; -} - -struct clk *dpu_power_clk_get_clk(struct dpu_power_handle *phandle, - char *clock_name) -{ - int i; - struct dss_module_power *mp; - struct clk *clk = NULL; - - if (!phandle) { - pr_err("invalid input power handle\n"); - return 0; - } - mp = &phandle->mp; - - for (i = 0; i < mp->num_clk; i++) { - if (!strcmp(mp->clk_config[i].clk_name, clock_name)) { - clk = mp->clk_config[i].clk; - break; - } - } - - return clk; -} - struct dpu_power_event *dpu_power_handle_register_event( struct dpu_power_handle *phandle, u32 event_type, void (*cb_fnc)(u32 event_type, void *usr), diff --git a/drivers/gpu/drm/msm/dpu_power_handle.h b/drivers/gpu/drm/msm/dpu_power_handle.h index 1edae5c..83f048d 100644 --- a/drivers/gpu/drm/msm/dpu_power_handle.h +++ b/drivers/gpu/drm/msm/dpu_power_handle.h @@ -230,46 +230,6 @@ int dpu_power_data_bus_state_update(struct dpu_power_handle *phandle, bool enable);
/** - * dpu_power_clk_set_rate() - set the clock rate - * @pdata: power handle containing the resources - * @clock_name: clock name which needs rate update. - * @rate: Requested rate. - * - * Return: error code. - */ -int dpu_power_clk_set_rate(struct dpu_power_handle *pdata, char *clock_name, - u64 rate); - -/** - * dpu_power_clk_get_rate() - get the clock rate - * @pdata: power handle containing the resources - * @clock_name: clock name to get the rate - * - * Return: current clock rate - */ -u64 dpu_power_clk_get_rate(struct dpu_power_handle *pdata, char *clock_name); - -/** - * dpu_power_clk_get_max_rate() - get the maximum clock rate - * @pdata: power handle containing the resources - * @clock_name: clock name to get the max rate. - * - * Return: maximum clock rate or 0 if not found. - */ -u64 dpu_power_clk_get_max_rate(struct dpu_power_handle *pdata, - char *clock_name); - -/** - * dpu_power_clk_get_clk() - get the clock - * @pdata: power handle containing the resources - * @clock_name: clock name to get the clk pointer. - * - * Return: Pointer to clock - */ -struct clk *dpu_power_clk_get_clk(struct dpu_power_handle *phandle, - char *clock_name); - -/** * dpu_power_data_bus_set_quota() - set data bus quota for power client * @phandle: power handle containing the resources * @client: client information to set quota