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This is required by the mt8365 for the MM power domain. Signed-off-by: Alexandre Bailon Signed-off-by: Fabien Parent --- drivers/soc/mediatek/mtk-pm-domains.c | 64 +++++++++++++++++++++------ drivers/soc/mediatek/mtk-pm-domains.h | 27 ++++++----- 2 files changed, 67 insertions(+), 24 deletions(-) diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c index 5ced254b082b..90b91b3b19a8 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.c +++ b/drivers/soc/mediatek/mtk-pm-domains.c @@ -44,6 +44,7 @@ struct scpsys_domain { struct clk_bulk_data *subsys_clks; struct regmap *infracfg; struct regmap *smi; + struct regmap *infracfg_nao; struct regulator *supply; }; @@ -116,23 +117,38 @@ static int scpsys_sram_disable(struct scpsys_domain *pd) MTK_POLL_TIMEOUT); } -static int _scpsys_bus_protect_enable(const struct scpsys_bus_prot_data *bpd, struct regmap *regmap) +static int _scpsys_bus_protect_enable(const struct scpsys_bus_prot_data *bpd, + struct regmap *regmap, struct regmap *infracfg_nao) { int i, ret; for (i = 0; i < SPM_MAX_BUS_PROT_DATA; i++) { - u32 val, mask = bpd[i].bus_prot_mask; + u32 mask = bpd[i].bus_prot_mask; + u32 val = mask, sta_mask = mask; + struct regmap *ack_regmap = regmap; if (!mask) break; + if (bpd[i].wayen) { + if (!infracfg_nao) + return -ENODEV; + + val = 0; + sta_mask = bpd[i].bus_prot_sta_mask; + ack_regmap = infracfg_nao; + } + if (bpd[i].bus_prot_reg_update) - regmap_set_bits(regmap, bpd[i].bus_prot_set, mask); + regmap_update_bits(regmap, bpd[i].bus_prot_set, mask, val); else regmap_write(regmap, bpd[i].bus_prot_set, mask); - ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, - val, (val & mask) == mask, + if (bpd[i].ignore_clr_ack) + continue; + + ret = regmap_read_poll_timeout(ack_regmap, bpd[i].bus_prot_sta, + val, (val & sta_mask) == sta_mask, MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret) return ret; @@ -145,34 +161,49 @@ static int scpsys_bus_protect_enable(struct scpsys_domain *pd) { int ret; - ret = _scpsys_bus_protect_enable(pd->data->bp_infracfg, pd->infracfg); + ret = _scpsys_bus_protect_enable(pd->data->bp_infracfg, + pd->infracfg, pd->infracfg_nao); if (ret) return ret; - return _scpsys_bus_protect_enable(pd->data->bp_smi, pd->smi); + return _scpsys_bus_protect_enable(pd->data->bp_smi, pd->smi, NULL); } +#define mask_cond(wayen, val, mask) \ + ((wayen && ((val & mask) == mask)) || (!wayen && !(val & mask))) + static int _scpsys_bus_protect_disable(const struct scpsys_bus_prot_data *bpd, - struct regmap *regmap) + struct regmap *regmap, struct regmap *infracfg_nao) { int i, ret; for (i = SPM_MAX_BUS_PROT_DATA - 1; i >= 0; i--) { - u32 val, mask = bpd[i].bus_prot_mask; + u32 val = 0, mask = bpd[i].bus_prot_mask; + u32 sta_mask = mask; + struct regmap *ack_regmap = regmap; if (!mask) continue; + if (bpd[i].wayen) { + if (!infracfg_nao) + return -ENODEV; + + val = mask; + sta_mask = bpd[i].bus_prot_sta_mask; + ack_regmap = infracfg_nao; + } + if (bpd[i].bus_prot_reg_update) - regmap_clear_bits(regmap, bpd[i].bus_prot_clr, mask); + regmap_update_bits(regmap, bpd[i].bus_prot_clr, mask, val); else regmap_write(regmap, bpd[i].bus_prot_clr, mask); if (bpd[i].ignore_clr_ack) continue; - ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, - val, !(val & mask), + ret = regmap_read_poll_timeout(ack_regmap, bpd[i].bus_prot_sta, + val, mask_cond(bpd[i].wayen, val, sta_mask), MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret) return ret; @@ -185,11 +216,12 @@ static int scpsys_bus_protect_disable(struct scpsys_domain *pd) { int ret; - ret = _scpsys_bus_protect_disable(pd->data->bp_smi, pd->smi); + ret = _scpsys_bus_protect_disable(pd->data->bp_smi, pd->smi, NULL); if (ret) return ret; - return _scpsys_bus_protect_disable(pd->data->bp_infracfg, pd->infracfg); + return _scpsys_bus_protect_disable(pd->data->bp_infracfg, + pd->infracfg, pd->infracfg_nao); } static int scpsys_regulator_enable(struct regulator *supply) @@ -363,6 +395,10 @@ generic_pm_domain *scpsys_add_one_domain(struct scpsys *scpsys, struct device_no return ERR_CAST(pd->smi); } + pd->infracfg_nao = syscon_regmap_lookup_by_phandle_optional(node, "mediatek,infracfg_nao"); + if (IS_ERR(pd->infracfg_nao)) + return ERR_CAST(pd->infracfg_nao); + num_clks = of_clk_get_parent_count(node); if (num_clks > 0) { /* Calculate number of subsys_clks */ diff --git a/drivers/soc/mediatek/mtk-pm-domains.h b/drivers/soc/mediatek/mtk-pm-domains.h index daa24e890dd4..a3955d960233 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.h +++ b/drivers/soc/mediatek/mtk-pm-domains.h @@ -39,23 +39,28 @@ #define SPM_MAX_BUS_PROT_DATA 6 -#define _BUS_PROT(_mask, _set, _clr, _sta, _update, _ignore) { \ - .bus_prot_mask = (_mask), \ - .bus_prot_set = _set, \ - .bus_prot_clr = _clr, \ - .bus_prot_sta = _sta, \ - .bus_prot_reg_update = _update, \ - .ignore_clr_ack = _ignore, \ +#define _BUS_PROT(_mask, _sta_mask, _set, _clr, _sta, _update, _ignore, _wayen) { \ + .bus_prot_mask = (_mask), \ + .bus_prot_set = _set, \ + .bus_prot_clr = _clr, \ + .bus_prot_sta = _sta, \ + .bus_prot_sta_mask = _sta_mask, \ + .bus_prot_reg_update = _update, \ + .ignore_clr_ack = _ignore, \ + .wayen = _wayen, \ } #define BUS_PROT_WR(_mask, _set, _clr, _sta) \ - _BUS_PROT(_mask, _set, _clr, _sta, false, false) + _BUS_PROT(_mask, _mask, _set, _clr, _sta, false, false, false) #define BUS_PROT_WR_IGN(_mask, _set, _clr, _sta) \ - _BUS_PROT(_mask, _set, _clr, _sta, false, true) + _BUS_PROT(_mask, _mask, _set, _clr, _sta, false, true, false) #define BUS_PROT_UPDATE(_mask, _set, _clr, _sta) \ - _BUS_PROT(_mask, _set, _clr, _sta, true, false) + _BUS_PROT(_mask, _mask, _set, _clr, _sta, true, false, false) + +#define BUS_PROT_WAYEN(_en_mask, _sta_mask, _set, _sta) \ + _BUS_PROT(_en_mask, _sta_mask, _set, _set, _sta, true, false, true) #define BUS_PROT_UPDATE_TOPAXI(_mask) \ BUS_PROT_UPDATE(_mask, \ @@ -68,8 +73,10 @@ struct scpsys_bus_prot_data { u32 bus_prot_set; u32 bus_prot_clr; u32 bus_prot_sta; + u32 bus_prot_sta_mask; bool bus_prot_reg_update; bool ignore_clr_ack; + bool wayen; }; /**