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Tue, 16 Jun 2020 23:15:14 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 17 Jun 2020 00:05:23 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 17 Jun 2020 15:05:23 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 17 Jun 2020 15:05:23 +0800 From: Weiyi Lu To: Enric Balletbo Serra , Matthias Brugger , Nicolas Boichat , "Rob Herring" , Sascha Hauer Subject: [PATCH v16 05/11] soc: mediatek: Add multiple step bus protection control Date: Wed, 17 Jun 2020 15:05:11 +0800 Message-ID: <1592377517-14817-6-git-send-email-weiyi.lu@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1592377517-14817-1-git-send-email-weiyi.lu@mediatek.com> References: <1592377517-14817-1-git-send-email-weiyi.lu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200617_001532_132285_ACB13B9C X-CRM114-Status: GOOD ( 15.53 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: James Liao , Weiyi Lu , srv_heupstream@mediatek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Fan Chen , linux-mediatek@lists.infradead.org, Wendell Lin , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Both MT8183 & MT6765 have more control steps of bus protection than previous project. And there add more bus protection registers reside at infracfg & smi-common. Extend function to support multiple step bus protection control with more customized arguments. And then use bp_table for bus protection of all compatibles, instead of mixing bus_prot_mask and bus_prot_reg_update. Signed-off-by: Weiyi Lu --- drivers/soc/mediatek/mtk-scpsys.c | 235 +++++++++++++++++++++++++++----------- 1 file changed, 168 insertions(+), 67 deletions(-) diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c index b603af7..59a525a 100644 --- a/drivers/soc/mediatek/mtk-scpsys.c +++ b/drivers/soc/mediatek/mtk-scpsys.c @@ -78,11 +78,6 @@ #define PWR_STATUS_HIF1 BIT(26) /* MT7622 */ #define PWR_STATUS_WB BIT(27) /* MT7622 */ -#define INFRA_TOPAXI_PROTECTEN 0x0220 -#define INFRA_TOPAXI_PROTECTSTA1 0x0228 -#define INFRA_TOPAXI_PROTECTEN_SET 0x0260 -#define INFRA_TOPAXI_PROTECTEN_CLR 0x0264 - #define MT2701_TOP_AXI_PROT_EN_MM_M0 BIT(1) #define MT2701_TOP_AXI_PROT_EN_CONN_M BIT(2) #define MT2701_TOP_AXI_PROT_EN_CONN_S BIT(8) @@ -103,6 +98,45 @@ #define MAX_CLKS 3 +#define MAX_STEPS 4 + +#define _BUS_PROT(_type, _set_ofs, _clr_ofs, \ + _en_ofs, _sta_ofs, _mask, _ignore_clr_ack) { \ + .type = _type, \ + .set_ofs = _set_ofs, \ + .clr_ofs = _clr_ofs, \ + .en_ofs = _en_ofs, \ + .sta_ofs = _sta_ofs, \ + .mask = _mask, \ + .ignore_clr_ack = _ignore_clr_ack, \ + } + +#define BUS_PROT(_type, _set_ofs, _clr_ofs, \ + _en_ofs, _sta_ofs, _mask) \ + _BUS_PROT(_type, _set_ofs, _clr_ofs, \ + _en_ofs, _sta_ofs, _mask, false) + +#define BUS_PROT_IGN(_type, _set_ofs, _clr_ofs, \ + _en_ofs, _sta_ofs, _mask) \ + _BUS_PROT(_type, _set_ofs, _clr_ofs, \ + _en_ofs, _sta_ofs, _mask, true) + +enum regmap_type { + INVALID_TYPE = 0, + IFR_TYPE, + SMI_TYPE, +}; + +struct bus_prot { + enum regmap_type type; + u32 set_ofs; + u32 clr_ofs; + u32 en_ofs; + u32 sta_ofs; + u32 mask; + bool ignore_clr_ack; +}; + /** * struct scp_domain_data - scp domain data for power on/off flow * @name: The domain name. @@ -110,9 +144,9 @@ * @ctl_offs: The offset for main power control register. * @sram_pdn_bits: The mask for sram power control bits. * @sram_pdn_ack_bits: The mask for sram power control acked bits. - * @bus_prot_mask: The mask for single step bus protection. * @basic_clk_name: The basic clocks required by this power domain. * @caps: The flag for active wake-up action. + * @bp_table: The mask table for multiple step bus protection. */ struct scp_domain_data { const char *name; @@ -120,9 +154,9 @@ struct scp_domain_data { int ctl_offs; u32 sram_pdn_bits; u32 sram_pdn_ack_bits; - u32 bus_prot_mask; const char *basic_clk_name[MAX_CLKS]; u8 caps; + struct bus_prot bp_table[MAX_STEPS]; }; struct scp; @@ -146,8 +180,8 @@ struct scp { struct device *dev; void __iomem *base; struct regmap *infracfg; + struct regmap *smi_common; struct scp_ctrl_reg ctrl_reg; - bool bus_prot_reg_update; }; struct scp_subdomain { @@ -161,7 +195,6 @@ struct scp_soc_data { const struct scp_subdomain *subdomains; int num_subdomains; const struct scp_ctrl_reg regs; - bool bus_prot_reg_update; }; static int scpsys_domain_is_on(struct scp_domain *scpd) @@ -271,53 +304,87 @@ static int scpsys_sram_disable(struct scp_domain *scpd, void __iomem *ctl_addr) MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); } +static int set_bus_protection(struct regmap *map, const struct bus_prot *bp) +{ + u32 val; + + if (bp->set_ofs) + regmap_write(map, bp->set_ofs, bp->mask); + else + regmap_update_bits(map, bp->en_ofs, bp->mask, bp->mask); + + return regmap_read_poll_timeout(map, bp->sta_ofs, + val, (val & bp->mask) == bp->mask, + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); +} + +static int clear_bus_protection(struct regmap *map, const struct bus_prot *bp) +{ + u32 val; + + if (bp->clr_ofs) + regmap_write(map, bp->clr_ofs, bp->mask); + else + regmap_update_bits(map, bp->en_ofs, bp->mask, 0); + + if (bp->ignore_clr_ack) + return 0; + + return regmap_read_poll_timeout(map, bp->sta_ofs, + val, !(val & bp->mask), + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); +} + static int scpsys_bus_protect_enable(struct scp_domain *scpd) { struct scp *scp = scpd->scp; + const struct bus_prot *bp_table = scpd->data->bp_table; struct regmap *infracfg = scp->infracfg; - u32 mask = scpd->data->bus_prot_mask; - bool reg_update = scp->bus_prot_reg_update; - u32 val; - int ret; + struct regmap *smi_common = scp->smi_common; + struct regmap *map; + int i, ret; - if (!mask) - return 0; + for (i = 0; i < MAX_STEPS; i++) { + if (bp_table[i].type == IFR_TYPE) + map = infracfg; + else if (bp_table[i].type == SMI_TYPE) + map = smi_common; + else + break; - if (reg_update) - regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, - mask); - else - regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_SET, mask); + ret = set_bus_protection(map, &bp_table[i]); - ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1, - val, (val & mask) == mask, - MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); + if (ret) + return ret; + } - return ret; + return 0; } static int scpsys_bus_protect_disable(struct scp_domain *scpd) { struct scp *scp = scpd->scp; + const struct bus_prot *bp_table = scpd->data->bp_table; struct regmap *infracfg = scp->infracfg; - u32 mask = scpd->data->bus_prot_mask; - bool reg_update = scp->bus_prot_reg_update; - u32 val; - int ret; + struct regmap *smi_common = scp->smi_common; + struct regmap *map; + int i, ret; - if (!mask) - return 0; + for (i = MAX_STEPS - 1; i >= 0; i--) { + if (bp_table[i].type == IFR_TYPE) + map = infracfg; + else if (bp_table[i].type == SMI_TYPE) + map = smi_common; + else + continue; - if (reg_update) - regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, 0); - else - regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_CLR, mask); + ret = clear_bus_protection(map, &bp_table[i]); - ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1, - val, !(val & mask), - MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); + if (ret) + return ret; + } - return ret; + return 0; } static int scpsys_power_on(struct generic_pm_domain *genpd) @@ -448,8 +515,7 @@ static int init_basic_clks(struct platform_device *pdev, struct clk **clk, static struct scp *init_scp(struct platform_device *pdev, const struct scp_domain_data *scp_domain_data, int num, - const struct scp_ctrl_reg *scp_ctrl_reg, - bool bus_prot_reg_update) + const struct scp_ctrl_reg *scp_ctrl_reg) { struct genpd_onecell_data *pd_data; struct resource *res; @@ -463,8 +529,6 @@ static struct scp *init_scp(struct platform_device *pdev, scp->ctrl_reg.pwr_sta_offs = scp_ctrl_reg->pwr_sta_offs; scp->ctrl_reg.pwr_sta2nd_offs = scp_ctrl_reg->pwr_sta2nd_offs; - scp->bus_prot_reg_update = bus_prot_reg_update; - scp->dev = &pdev->dev; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -492,6 +556,17 @@ static struct scp *init_scp(struct platform_device *pdev, return ERR_CAST(scp->infracfg); } + scp->smi_common = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, + "mediatek,smi"); + + if (scp->smi_common == ERR_PTR(-ENODEV)) { + scp->smi_common = NULL; + } else if (IS_ERR(scp->smi_common)) { + dev_err(&pdev->dev, "Cannot find smi_common controller: %ld\n", + PTR_ERR(scp->smi_common)); + return ERR_CAST(scp->smi_common); + } + for (i = 0; i < num; i++) { struct scp_domain *scpd = &scp->domains[i]; const struct scp_domain_data *data = &scp_domain_data[i]; @@ -574,8 +649,11 @@ static void mtk_register_power_domains(struct platform_device *pdev, .name = "conn", .sta_mask = PWR_STATUS_CONN, .ctl_offs = SPM_CONN_PWR_CON, - .bus_prot_mask = MT2701_TOP_AXI_PROT_EN_CONN_M | - MT2701_TOP_AXI_PROT_EN_CONN_S, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT2701_TOP_AXI_PROT_EN_CONN_M | + MT2701_TOP_AXI_PROT_EN_CONN_S), + }, .caps = MTK_SCPD_ACTIVE_WAKEUP, }, [MT2701_POWER_DOMAIN_DISP] = { @@ -584,7 +662,10 @@ static void mtk_register_power_domains(struct platform_device *pdev, .ctl_offs = SPM_DIS_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .basic_clk_name = {"mm"}, - .bus_prot_mask = MT2701_TOP_AXI_PROT_EN_MM_M0, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT2701_TOP_AXI_PROT_EN_MM_M0), + }, .caps = MTK_SCPD_ACTIVE_WAKEUP, }, [MT2701_POWER_DOMAIN_MFG] = { @@ -719,7 +800,10 @@ static void mtk_register_power_domains(struct platform_device *pdev, .sram_pdn_bits = GENMASK(8, 8), .sram_pdn_ack_bits = GENMASK(16, 16), .basic_clk_name = {"mfg"}, - .bus_prot_mask = BIT(14) | BIT(21) | BIT(23), + .bp_table = { + BUS_PROT(IFR_TYPE, 0x260, 0x264, 0x220, 0x228, + BIT(14) | BIT(21) | BIT(23)), + }, .caps = MTK_SCPD_ACTIVE_WAKEUP, }, [MT2712_POWER_DOMAIN_MFG_SC1] = { @@ -791,7 +875,10 @@ static void mtk_register_power_domains(struct platform_device *pdev, .sram_pdn_bits = GENMASK(8, 8), .sram_pdn_ack_bits = GENMASK(12, 12), .basic_clk_name = {"mm"}, - .bus_prot_mask = (BIT(1) | BIT(2)), + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + BIT(1) | BIT(2)), + }, }, [MT6797_POWER_DOMAIN_AUDIO] = { .name = "audio", @@ -838,7 +925,10 @@ static void mtk_register_power_domains(struct platform_device *pdev, .ctl_offs = SPM_ETHSYS_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(15, 12), - .bus_prot_mask = MT7622_TOP_AXI_PROT_EN_ETHSYS, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT7622_TOP_AXI_PROT_EN_ETHSYS), + }, .caps = MTK_SCPD_ACTIVE_WAKEUP, }, [MT7622_POWER_DOMAIN_HIF0] = { @@ -848,7 +938,10 @@ static void mtk_register_power_domains(struct platform_device *pdev, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(15, 12), .basic_clk_name = {"hif_sel"}, - .bus_prot_mask = MT7622_TOP_AXI_PROT_EN_HIF0, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT7622_TOP_AXI_PROT_EN_HIF0), + }, .caps = MTK_SCPD_ACTIVE_WAKEUP, }, [MT7622_POWER_DOMAIN_HIF1] = { @@ -858,7 +951,10 @@ static void mtk_register_power_domains(struct platform_device *pdev, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(15, 12), .basic_clk_name = {"hif_sel"}, - .bus_prot_mask = MT7622_TOP_AXI_PROT_EN_HIF1, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT7622_TOP_AXI_PROT_EN_HIF1), + }, .caps = MTK_SCPD_ACTIVE_WAKEUP, }, [MT7622_POWER_DOMAIN_WB] = { @@ -867,7 +963,10 @@ static void mtk_register_power_domains(struct platform_device *pdev, .ctl_offs = SPM_WB_PWR_CON, .sram_pdn_bits = 0, .sram_pdn_ack_bits = 0, - .bus_prot_mask = MT7622_TOP_AXI_PROT_EN_WB, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT7622_TOP_AXI_PROT_EN_WB), + }, .caps = MTK_SCPD_ACTIVE_WAKEUP | MTK_SCPD_FWAIT_SRAM, }, }; @@ -881,8 +980,11 @@ static void mtk_register_power_domains(struct platform_device *pdev, .name = "conn", .sta_mask = PWR_STATUS_CONN, .ctl_offs = SPM_CONN_PWR_CON, - .bus_prot_mask = MT2701_TOP_AXI_PROT_EN_CONN_M | - MT2701_TOP_AXI_PROT_EN_CONN_S, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT2701_TOP_AXI_PROT_EN_CONN_M | + MT2701_TOP_AXI_PROT_EN_CONN_S), + }, .caps = MTK_SCPD_ACTIVE_WAKEUP, }, [MT7623A_POWER_DOMAIN_ETH] = { @@ -947,8 +1049,11 @@ static void mtk_register_power_domains(struct platform_device *pdev, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(12, 12), .basic_clk_name = {"mm"}, - .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 | - MT8173_TOP_AXI_PROT_EN_MM_M1, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT8173_TOP_AXI_PROT_EN_MM_M0 | + MT8173_TOP_AXI_PROT_EN_MM_M1), + }, }, [MT8173_POWER_DOMAIN_VENC_LT] = { .name = "venc_lt", @@ -994,10 +1099,13 @@ static void mtk_register_power_domains(struct platform_device *pdev, .ctl_offs = SPM_MFG_PWR_CON, .sram_pdn_bits = GENMASK(13, 8), .sram_pdn_ack_bits = GENMASK(21, 16), - .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MFG_S | - MT8173_TOP_AXI_PROT_EN_MFG_M0 | - MT8173_TOP_AXI_PROT_EN_MFG_M1 | - MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT, + .bp_table = { + BUS_PROT(IFR_TYPE, 0, 0, 0x220, 0x228, + MT8173_TOP_AXI_PROT_EN_MFG_S | + MT8173_TOP_AXI_PROT_EN_MFG_M0 | + MT8173_TOP_AXI_PROT_EN_MFG_M1 | + MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT), + }, }, }; @@ -1013,7 +1121,6 @@ static void mtk_register_power_domains(struct platform_device *pdev, .pwr_sta_offs = SPM_PWR_STATUS, .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND }, - .bus_prot_reg_update = true, }; static const struct scp_soc_data mt2712_data = { @@ -1025,7 +1132,6 @@ static void mtk_register_power_domains(struct platform_device *pdev, .pwr_sta_offs = SPM_PWR_STATUS, .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND }, - .bus_prot_reg_update = false, }; static const struct scp_soc_data mt6797_data = { @@ -1037,7 +1143,6 @@ static void mtk_register_power_domains(struct platform_device *pdev, .pwr_sta_offs = SPM_PWR_STATUS_MT6797, .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND_MT6797 }, - .bus_prot_reg_update = true, }; static const struct scp_soc_data mt7622_data = { @@ -1047,7 +1152,6 @@ static void mtk_register_power_domains(struct platform_device *pdev, .pwr_sta_offs = SPM_PWR_STATUS, .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND }, - .bus_prot_reg_update = true, }; static const struct scp_soc_data mt7623a_data = { @@ -1057,7 +1161,6 @@ static void mtk_register_power_domains(struct platform_device *pdev, .pwr_sta_offs = SPM_PWR_STATUS, .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND }, - .bus_prot_reg_update = true, }; static const struct scp_soc_data mt8173_data = { @@ -1069,7 +1172,6 @@ static void mtk_register_power_domains(struct platform_device *pdev, .pwr_sta_offs = SPM_PWR_STATUS, .pwr_sta2nd_offs = SPM_PWR_STATUS_2ND }, - .bus_prot_reg_update = true, }; /* @@ -1110,8 +1212,7 @@ static int scpsys_probe(struct platform_device *pdev) soc = of_device_get_match_data(&pdev->dev); - scp = init_scp(pdev, soc->domains, soc->num_domains, &soc->regs, - soc->bus_prot_reg_update); + scp = init_scp(pdev, soc->domains, soc->num_domains, &soc->regs); if (IS_ERR(scp)) return PTR_ERR(scp);