diff options
Diffstat (limited to 'drivers/media/platform/qcom/venus/pm_helpers.c')
| -rw-r--r-- | drivers/media/platform/qcom/venus/pm_helpers.c | 94 |
1 files changed, 86 insertions, 8 deletions
diff --git a/drivers/media/platform/qcom/venus/pm_helpers.c b/drivers/media/platform/qcom/venus/pm_helpers.c index 531e7a41658f..57877eacecf0 100644 --- a/drivers/media/platform/qcom/venus/pm_helpers.c +++ b/drivers/media/platform/qcom/venus/pm_helpers.c @@ -9,6 +9,7 @@ #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/pm_domain.h> +#include <linux/pm_opp.h> #include <linux/pm_runtime.h> #include <linux/types.h> #include <media/v4l2-mem2mem.h> @@ -66,10 +67,9 @@ static void core_clks_disable(struct venus_core *core) static int core_clks_set_rate(struct venus_core *core, unsigned long freq) { - struct clk *clk = core->clks[0]; int ret; - ret = clk_set_rate(clk, freq); + ret = dev_pm_opp_set_rate(core->dev, freq); if (ret) return ret; @@ -212,7 +212,7 @@ static int load_scale_bw(struct venus_core *core) } mutex_unlock(&core->lock); - dev_dbg(core->dev, "total: avg_bw: %u, peak_bw: %u\n", + dev_dbg(core->dev, VDBGL "total: avg_bw: %u, peak_bw: %u\n", total_avg, total_peak); return icc_set_bw(core->video_path, total_avg, total_peak); @@ -744,13 +744,16 @@ static int venc_power_v4(struct device *dev, int on) static int vcodec_domains_get(struct device *dev) { + int ret; + struct opp_table *opp_table; + struct device **opp_virt_dev; struct venus_core *core = dev_get_drvdata(dev); const struct venus_resources *res = core->res; struct device *pd; unsigned int i; if (!res->vcodec_pmdomains_num) - return -ENODEV; + goto skip_pmdomains; for (i = 0; i < res->vcodec_pmdomains_num; i++) { pd = dev_pm_domain_attach_by_name(dev, @@ -767,7 +770,41 @@ static int vcodec_domains_get(struct device *dev) if (!core->pd_dl_venus) return -ENODEV; +skip_pmdomains: + if (!core->has_opp_table) + return 0; + + /* Attach the power domain for setting performance state */ + opp_table = dev_pm_opp_attach_genpd(dev, res->opp_pmdomain, &opp_virt_dev); + if (IS_ERR(opp_table)) { + ret = PTR_ERR(opp_table); + goto opp_attach_err; + } + + core->opp_pmdomain = *opp_virt_dev; + core->opp_dl_venus = device_link_add(dev, core->opp_pmdomain, + DL_FLAG_RPM_ACTIVE | + DL_FLAG_PM_RUNTIME | + DL_FLAG_STATELESS); + if (!core->opp_dl_venus) { + ret = -ENODEV; + goto opp_dl_add_err; + } + return 0; + +opp_dl_add_err: + dev_pm_domain_detach(core->opp_pmdomain, true); +opp_attach_err: + if (core->pd_dl_venus) { + device_link_del(core->pd_dl_venus); + for (i = 0; i < res->vcodec_pmdomains_num; i++) { + if (IS_ERR_OR_NULL(core->pmdomains[i])) + continue; + dev_pm_domain_detach(core->pmdomains[i], true); + } + } + return ret; } static void vcodec_domains_put(struct device *dev) @@ -777,7 +814,7 @@ static void vcodec_domains_put(struct device *dev) unsigned int i; if (!res->vcodec_pmdomains_num) - return; + goto skip_pmdomains; if (core->pd_dl_venus) device_link_del(core->pd_dl_venus); @@ -787,6 +824,15 @@ static void vcodec_domains_put(struct device *dev) continue; dev_pm_domain_detach(core->pmdomains[i], true); } + +skip_pmdomains: + if (!core->has_opp_table) + return; + + if (core->opp_dl_venus) + device_link_del(core->opp_dl_venus); + + dev_pm_domain_detach(core->opp_pmdomain, true); } static int core_get_v4(struct device *dev) @@ -815,19 +861,46 @@ static int core_get_v4(struct device *dev) if (legacy_binding) return 0; + core->opp_table = dev_pm_opp_set_clkname(dev, "core"); + if (IS_ERR(core->opp_table)) + return PTR_ERR(core->opp_table); + + if (core->res->opp_pmdomain) { + ret = dev_pm_opp_of_add_table(dev); + if (!ret) { + core->has_opp_table = true; + } else if (ret != -ENODEV) { + dev_err(dev, "invalid OPP table in device tree\n"); + dev_pm_opp_put_clkname(core->opp_table); + return ret; + } + } + ret = vcodec_domains_get(dev); - if (ret) + if (ret) { + if (core->has_opp_table) + dev_pm_opp_of_remove_table(dev); + dev_pm_opp_put_clkname(core->opp_table); return ret; + } return 0; } static void core_put_v4(struct device *dev) { + struct venus_core *core = dev_get_drvdata(dev); + if (legacy_binding) return; vcodec_domains_put(dev); + + if (core->has_opp_table) + dev_pm_opp_of_remove_table(dev); + if (core->opp_table) + dev_pm_opp_put_clkname(core->opp_table); + } static int core_power_v4(struct device *dev, int on) @@ -835,10 +908,15 @@ static int core_power_v4(struct device *dev, int on) struct venus_core *core = dev_get_drvdata(dev); int ret = 0; - if (on == POWER_ON) + if (on == POWER_ON) { ret = core_clks_enable(core); - else + } else { + /* Drop the performance state vote */ + if (core->opp_pmdomain) + dev_pm_opp_set_rate(dev, 0); + core_clks_disable(core); + } return ret; } |