diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-10 14:56:23 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-10 14:56:23 -0800 |
commit | 56e0464980febfa50432a070261579415c72664e (patch) | |
tree | ec4753abd2562c317ed5f33b81c156b319456fd5 /drivers/soc/mediatek/mtk-scpsys.c | |
parent | a5e1d715a8d0696961d99d31d869aa522f1cad5a (diff) | |
parent | b1e4006aeda8c8784029de17d47987c21ea75f6d (diff) |
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Olof Johansson:
"New and/or improved SoC support for this release:
Marvell Berlin:
- Enable standard DT-based cpufreq
- Add CPU hotplug support
Freescale:
- Ethernet init for i.MX7D
- Suspend/resume support for i.MX6UL
Allwinner:
- Support for R8 chipset (used on NTC's $9 C.H.I.P board)
Mediatek:
- SMP support for some platforms
Uniphier:
- L2 support
- Cleaned up SMP support, etc.
plus a handful of other patches around above functionality, and a few
other smaller changes"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (42 commits)
ARM: uniphier: rework SMP operations to use trampoline code
ARM: uniphier: add outer cache support
Documentation: EXYNOS: Update bootloader interface on exynos542x
ARM: mvebu: add broken-idle option
ARM: orion5x: use mac_pton() helper
ARM: at91: pm: at91_pm_suspend_in_sram() must be 8-byte aligned
ARM: sunxi: Add R8 support
ARM: digicolor: select pinctrl/gpio driver
arm: berlin: add CPU hotplug support
arm: berlin: use non-self-cleared reset register to reset cpu
ARM: mediatek: add smp bringup code
ARM: mediatek: enable gpt6 on boot up to make arch timer working
soc: mediatek: Fix random hang up issue while kernel init
soc: ti: qmss: make acc queue support optional in the driver
soc: ti: add firmware file name as part of the driver
Documentation: dt: soc: Add description for knav qmss driver
ARM: S3C64XX: Use PWM lookup table for mach-smartq
ARM: S3C64XX: Use PWM lookup table for mach-hmt
ARM: S3C64XX: Use PWM lookup table for mach-crag6410
ARM: S3C64XX: Use PWM lookup table for smdk6410
...
Diffstat (limited to 'drivers/soc/mediatek/mtk-scpsys.c')
-rw-r--r-- | drivers/soc/mediatek/mtk-scpsys.c | 83 |
1 files changed, 60 insertions, 23 deletions
diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c index 164a7d8439b1..4d4203c896c4 100644 --- a/drivers/soc/mediatek/mtk-scpsys.c +++ b/drivers/soc/mediatek/mtk-scpsys.c @@ -54,12 +54,16 @@ #define PWR_STATUS_USB BIT(25) enum clk_id { + MT8173_CLK_NONE, MT8173_CLK_MM, MT8173_CLK_MFG, - MT8173_CLK_NONE, - MT8173_CLK_MAX = MT8173_CLK_NONE, + MT8173_CLK_VENC, + MT8173_CLK_VENC_LT, + MT8173_CLK_MAX, }; +#define MAX_CLKS 2 + struct scp_domain_data { const char *name; u32 sta_mask; @@ -67,7 +71,8 @@ struct scp_domain_data { u32 sram_pdn_bits; u32 sram_pdn_ack_bits; u32 bus_prot_mask; - enum clk_id clk_id; + enum clk_id clk_id[MAX_CLKS]; + bool active_wakeup; }; static const struct scp_domain_data scp_domain_data[] __initconst = { @@ -77,7 +82,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_VDE_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(12, 12), - .clk_id = MT8173_CLK_MM, + .clk_id = {MT8173_CLK_MM}, }, [MT8173_POWER_DOMAIN_VENC] = { .name = "venc", @@ -85,7 +90,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_VEN_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(15, 12), - .clk_id = MT8173_CLK_MM, + .clk_id = {MT8173_CLK_MM, MT8173_CLK_VENC}, }, [MT8173_POWER_DOMAIN_ISP] = { .name = "isp", @@ -93,7 +98,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_ISP_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(13, 12), - .clk_id = MT8173_CLK_MM, + .clk_id = {MT8173_CLK_MM}, }, [MT8173_POWER_DOMAIN_MM] = { .name = "mm", @@ -101,7 +106,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_DIS_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(12, 12), - .clk_id = MT8173_CLK_MM, + .clk_id = {MT8173_CLK_MM}, .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 | MT8173_TOP_AXI_PROT_EN_MM_M1, }, @@ -111,7 +116,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_VEN2_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(15, 12), - .clk_id = MT8173_CLK_MM, + .clk_id = {MT8173_CLK_MM, MT8173_CLK_VENC_LT}, }, [MT8173_POWER_DOMAIN_AUDIO] = { .name = "audio", @@ -119,7 +124,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_AUDIO_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(15, 12), - .clk_id = MT8173_CLK_NONE, + .clk_id = {MT8173_CLK_NONE}, }, [MT8173_POWER_DOMAIN_USB] = { .name = "usb", @@ -127,7 +132,8 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_USB_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(15, 12), - .clk_id = MT8173_CLK_NONE, + .clk_id = {MT8173_CLK_NONE}, + .active_wakeup = true, }, [MT8173_POWER_DOMAIN_MFG_ASYNC] = { .name = "mfg_async", @@ -135,7 +141,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_MFG_ASYNC_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = 0, - .clk_id = MT8173_CLK_MFG, + .clk_id = {MT8173_CLK_MFG}, }, [MT8173_POWER_DOMAIN_MFG_2D] = { .name = "mfg_2d", @@ -143,7 +149,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_MFG_2D_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(13, 12), - .clk_id = MT8173_CLK_NONE, + .clk_id = {MT8173_CLK_NONE}, }, [MT8173_POWER_DOMAIN_MFG] = { .name = "mfg", @@ -151,7 +157,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = { .ctl_offs = SPM_MFG_PWR_CON, .sram_pdn_bits = GENMASK(13, 8), .sram_pdn_ack_bits = GENMASK(21, 16), - .clk_id = MT8173_CLK_NONE, + .clk_id = {MT8173_CLK_NONE}, .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MFG_S | MT8173_TOP_AXI_PROT_EN_MFG_M0 | MT8173_TOP_AXI_PROT_EN_MFG_M1 | @@ -166,12 +172,13 @@ struct scp; struct scp_domain { struct generic_pm_domain genpd; struct scp *scp; - struct clk *clk; + struct clk *clk[MAX_CLKS]; u32 sta_mask; void __iomem *ctl_addr; u32 sram_pdn_bits; u32 sram_pdn_ack_bits; u32 bus_prot_mask; + bool active_wakeup; }; struct scp { @@ -212,11 +219,16 @@ static int scpsys_power_on(struct generic_pm_domain *genpd) u32 sram_pdn_ack = scpd->sram_pdn_ack_bits; u32 val; int ret; + int i; + + for (i = 0; i < MAX_CLKS && scpd->clk[i]; i++) { + ret = clk_prepare_enable(scpd->clk[i]); + if (ret) { + for (--i; i >= 0; i--) + clk_disable_unprepare(scpd->clk[i]); - if (scpd->clk) { - ret = clk_prepare_enable(scpd->clk); - if (ret) goto err_clk; + } } val = readl(ctl_addr); @@ -282,7 +294,10 @@ static int scpsys_power_on(struct generic_pm_domain *genpd) return 0; err_pwr_ack: - clk_disable_unprepare(scpd->clk); + for (i = MAX_CLKS - 1; i >= 0; i--) { + if (scpd->clk[i]) + clk_disable_unprepare(scpd->clk[i]); + } err_clk: dev_err(scp->dev, "Failed to power on domain %s\n", genpd->name); @@ -299,6 +314,7 @@ static int scpsys_power_off(struct generic_pm_domain *genpd) u32 pdn_ack = scpd->sram_pdn_ack_bits; u32 val; int ret; + int i; if (scpd->bus_prot_mask) { ret = mtk_infracfg_set_bus_protection(scp->infracfg, @@ -360,8 +376,8 @@ static int scpsys_power_off(struct generic_pm_domain *genpd) expired = true; } - if (scpd->clk) - clk_disable_unprepare(scpd->clk); + for (i = 0; i < MAX_CLKS && scpd->clk[i]; i++) + clk_disable_unprepare(scpd->clk[i]); return 0; @@ -371,11 +387,22 @@ out: return ret; } +static bool scpsys_active_wakeup(struct device *dev) +{ + struct generic_pm_domain *genpd; + struct scp_domain *scpd; + + genpd = pd_to_genpd(dev->pm_domain); + scpd = container_of(genpd, struct scp_domain, genpd); + + return scpd->active_wakeup; +} + static int __init scpsys_probe(struct platform_device *pdev) { struct genpd_onecell_data *pd_data; struct resource *res; - int i, ret; + int i, j, ret; struct scp *scp; struct clk *clk[MT8173_CLK_MAX]; @@ -405,6 +432,14 @@ static int __init scpsys_probe(struct platform_device *pdev) if (IS_ERR(clk[MT8173_CLK_MFG])) return PTR_ERR(clk[MT8173_CLK_MFG]); + clk[MT8173_CLK_VENC] = devm_clk_get(&pdev->dev, "venc"); + if (IS_ERR(clk[MT8173_CLK_VENC])) + return PTR_ERR(clk[MT8173_CLK_VENC]); + + clk[MT8173_CLK_VENC_LT] = devm_clk_get(&pdev->dev, "venc_lt"); + if (IS_ERR(clk[MT8173_CLK_VENC_LT])) + return PTR_ERR(clk[MT8173_CLK_VENC_LT]); + scp->infracfg = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "infracfg"); if (IS_ERR(scp->infracfg)) { @@ -428,12 +463,14 @@ static int __init scpsys_probe(struct platform_device *pdev) scpd->sram_pdn_bits = data->sram_pdn_bits; scpd->sram_pdn_ack_bits = data->sram_pdn_ack_bits; scpd->bus_prot_mask = data->bus_prot_mask; - if (data->clk_id != MT8173_CLK_NONE) - scpd->clk = clk[data->clk_id]; + scpd->active_wakeup = data->active_wakeup; + for (j = 0; j < MAX_CLKS && data->clk_id[j]; j++) + scpd->clk[j] = clk[data->clk_id[j]]; genpd->name = data->name; genpd->power_off = scpsys_power_off; genpd->power_on = scpsys_power_on; + genpd->dev_ops.active_wakeup = scpsys_active_wakeup; /* * Initially turn on all domains to make the domains usable |