diff options
Diffstat (limited to 'drivers/bus/ti-sysc.c')
| -rw-r--r-- | drivers/bus/ti-sysc.c | 87 |
1 files changed, 33 insertions, 54 deletions
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c index 2b6670daf7fc..97b85493aa43 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -917,6 +917,9 @@ set_midle: return -EINVAL; } + if (ddata->cfg.quirks & SYSC_QUIRK_SWSUP_MSTANDBY) + best_mode = SYSC_IDLE_NO; + reg &= ~(SYSC_IDLE_MASK << regbits->midle_shift); reg |= best_mode << regbits->midle_shift; sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg); @@ -978,6 +981,9 @@ static int sysc_disable_module(struct device *dev) return ret; } + if (ddata->cfg.quirks & SYSC_QUIRK_SWSUP_MSTANDBY) + best_mode = SYSC_IDLE_FORCE; + reg &= ~(SYSC_IDLE_MASK << regbits->midle_shift); reg |= best_mode << regbits->midle_shift; sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg); @@ -1037,8 +1043,6 @@ static int __maybe_unused sysc_runtime_resume_legacy(struct device *dev, struct ti_sysc_platform_data *pdata; int error; - reset_control_deassert(ddata->rsts); - pdata = dev_get_platdata(ddata->dev); if (!pdata) return 0; @@ -1051,6 +1055,8 @@ static int __maybe_unused sysc_runtime_resume_legacy(struct device *dev, dev_err(dev, "%s: could not enable: %i\n", __func__, error); + reset_control_deassert(ddata->rsts); + return 0; } @@ -1104,8 +1110,6 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev) sysc_clkdm_deny_idle(ddata); - reset_control_deassert(ddata->rsts); - if (sysc_opt_clks_needed(ddata)) { error = sysc_enable_opt_clocks(ddata); if (error) @@ -1116,6 +1120,8 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev) if (error) goto err_opt_clocks; + reset_control_deassert(ddata->rsts); + if (ddata->legacy_mode) { error = sysc_runtime_resume_legacy(dev, ddata); if (error) @@ -1251,6 +1257,10 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = { SYSC_QUIRK("gpu", 0x50000000, 0x14, -1, -1, 0x00010201, 0xffffffff, 0), SYSC_QUIRK("gpu", 0x50000000, 0xfe00, 0xfe10, -1, 0x40000000 , 0xffffffff, SYSC_MODULE_QUIRK_SGX), + SYSC_QUIRK("usb_otg_hs", 0, 0x400, 0x404, 0x408, 0x00000050, + 0xffffffff, SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), + SYSC_QUIRK("usb_otg_hs", 0, 0, 0x10, -1, 0x4ea2080d, 0xffffffff, + SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), SYSC_QUIRK("wdt", 0, 0, 0x10, 0x14, 0x502a0500, 0xfffff0f0, SYSC_MODULE_QUIRK_WDT), /* Watchdog on am3 and am4 */ @@ -1309,8 +1319,6 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = { SYSC_QUIRK("usbhstll", 0, 0, 0x10, 0x14, 0x00000008, 0xffffffff, 0), SYSC_QUIRK("usb_host_hs", 0, 0, 0x10, 0x14, 0x50700100, 0xffffffff, 0), SYSC_QUIRK("usb_host_hs", 0, 0, 0x10, -1, 0x50700101, 0xffffffff, 0), - SYSC_QUIRK("usb_otg_hs", 0, 0x400, 0x404, 0x408, 0x00000050, - 0xffffffff, 0), SYSC_QUIRK("vfpe", 0, 0, 0x104, -1, 0x4d001200, 0xffffffff, 0), #endif }; @@ -1532,37 +1540,6 @@ static int sysc_legacy_init(struct sysc *ddata) return error; } -/** - * sysc_rstctrl_reset_deassert - deassert rstctrl reset - * @ddata: device driver data - * @reset: reset before deassert - * - * A module can have both OCP softreset control and external rstctrl. - * If more complicated rstctrl resets are needed, please handle these - * directly from the child device driver and map only the module reset - * for the parent interconnect target module device. - * - * Automatic reset of the module on init can be skipped with the - * "ti,no-reset-on-init" device tree property. - */ -static int sysc_rstctrl_reset_deassert(struct sysc *ddata, bool reset) -{ - int error; - - if (!ddata->rsts) - return 0; - - if (reset) { - error = reset_control_assert(ddata->rsts); - if (error) - return error; - } - - reset_control_deassert(ddata->rsts); - - return 0; -} - /* * Note that the caller must ensure the interconnect target module is enabled * before calling reset. Otherwise reset will not complete. @@ -1625,15 +1602,6 @@ static int sysc_reset(struct sysc *ddata) static int sysc_init_module(struct sysc *ddata) { int error = 0; - bool manage_clocks = true; - - error = sysc_rstctrl_reset_deassert(ddata, false); - if (error) - return error; - - if (ddata->cfg.quirks & - (SYSC_QUIRK_NO_IDLE | SYSC_QUIRK_NO_IDLE_ON_INIT)) - manage_clocks = false; error = sysc_clockdomain_init(ddata); if (error) @@ -1654,7 +1622,7 @@ static int sysc_init_module(struct sysc *ddata) goto err_opt_clocks; if (!(ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)) { - error = sysc_rstctrl_reset_deassert(ddata, true); + error = reset_control_deassert(ddata->rsts); if (error) goto err_main_clocks; } @@ -1666,28 +1634,32 @@ static int sysc_init_module(struct sysc *ddata) if (ddata->legacy_mode) { error = sysc_legacy_init(ddata); if (error) - goto err_main_clocks; + goto err_reset; } if (!ddata->legacy_mode) { error = sysc_enable_module(ddata->dev); if (error) - goto err_main_clocks; + goto err_reset; } error = sysc_reset(ddata); if (error) dev_err(ddata->dev, "Reset failed with %d\n", error); - if (!ddata->legacy_mode && manage_clocks) + if (error && !ddata->legacy_mode) sysc_disable_module(ddata->dev); +err_reset: + if (error && !(ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)) + reset_control_assert(ddata->rsts); + err_main_clocks: - if (manage_clocks) + if (error) sysc_disable_main_clocks(ddata); err_opt_clocks: /* No re-enable of clockdomain autoidle to prevent module autoidle */ - if (manage_clocks) { + if (error) { sysc_disable_opt_clocks(ddata); sysc_clkdm_allow_idle(ddata); } @@ -2460,10 +2432,17 @@ static int sysc_probe(struct platform_device *pdev) goto unprepare; } - /* Balance reset counts */ - if (ddata->rsts) + /* Balance use counts as PM runtime should have enabled these all */ + if (!(ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)) reset_control_assert(ddata->rsts); + if (!(ddata->cfg.quirks & + (SYSC_QUIRK_NO_IDLE | SYSC_QUIRK_NO_IDLE_ON_INIT))) { + sysc_disable_main_clocks(ddata); + sysc_disable_opt_clocks(ddata); + sysc_clkdm_allow_idle(ddata); + } + sysc_show_registers(ddata); ddata->dev->type = &sysc_device_type; |