diff options
| -rw-r--r-- | drivers/pmdomain/mediatek/mtk-pm-domains.c | 57 |
1 files changed, 38 insertions, 19 deletions
diff --git a/drivers/pmdomain/mediatek/mtk-pm-domains.c b/drivers/pmdomain/mediatek/mtk-pm-domains.c index 6118a389244a..d84f0e7cde12 100644 --- a/drivers/pmdomain/mediatek/mtk-pm-domains.c +++ b/drivers/pmdomain/mediatek/mtk-pm-domains.c @@ -244,11 +244,45 @@ static int scpsys_regulator_disable(struct regulator *supply) return supply ? regulator_disable(supply) : 0; } +static int scpsys_ctl_pwrseq_on(struct scpsys_domain *pd) +{ + struct scpsys *scpsys = pd->scpsys; + bool tmp; + int ret; + + /* subsys power on */ + regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); + regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_2ND_BIT); + + /* wait until PWR_ACK = 1 */ + ret = readx_poll_timeout(scpsys_domain_is_on, pd, tmp, tmp, MTK_POLL_DELAY_US, + MTK_POLL_TIMEOUT); + if (ret < 0) + return ret; + + regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_CLK_DIS_BIT); + regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ISO_BIT); + regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_RST_B_BIT); + + return 0; +} + +static void scpsys_ctl_pwrseq_off(struct scpsys_domain *pd) +{ + struct scpsys *scpsys = pd->scpsys; + + /* subsys power off */ + regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ISO_BIT); + regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_CLK_DIS_BIT); + regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_RST_B_BIT); + regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_2ND_BIT); + regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); +} + static int scpsys_power_on(struct generic_pm_domain *genpd) { struct scpsys_domain *pd = container_of(genpd, struct scpsys_domain, genpd); struct scpsys *scpsys = pd->scpsys; - bool tmp; int ret; ret = scpsys_regulator_enable(pd->supply); @@ -263,20 +297,10 @@ static int scpsys_power_on(struct generic_pm_domain *genpd) regmap_clear_bits(scpsys->base, pd->data->ext_buck_iso_offs, pd->data->ext_buck_iso_mask); - /* subsys power on */ - regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); - regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_2ND_BIT); - - /* wait until PWR_ACK = 1 */ - ret = readx_poll_timeout(scpsys_domain_is_on, pd, tmp, tmp, MTK_POLL_DELAY_US, - MTK_POLL_TIMEOUT); - if (ret < 0) + ret = scpsys_ctl_pwrseq_on(pd); + if (ret) goto err_pwr_ack; - regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_CLK_DIS_BIT); - regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ISO_BIT); - regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_RST_B_BIT); - /* * In few Mediatek platforms(e.g. MT6779), the bus protect policy is * stricter, which leads to bus protect release must be prior to bus @@ -342,12 +366,7 @@ static int scpsys_power_off(struct generic_pm_domain *genpd) clk_bulk_disable_unprepare(pd->num_subsys_clks, pd->subsys_clks); - /* subsys power off */ - regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ISO_BIT); - regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_CLK_DIS_BIT); - regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_RST_B_BIT); - regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_2ND_BIT); - regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); + scpsys_ctl_pwrseq_off(pd); /* wait until PWR_ACK = 0 */ ret = readx_poll_timeout(scpsys_domain_is_on, pd, tmp, !tmp, MTK_POLL_DELAY_US, |