From: Tero Kristo <t-kristo@ti.com> To: <linux-omap@vger.kernel.org>, <tony@atomide.com>, <s-anna@ti.com> Cc: <linux-kernel@vger.kernel.org> Subject: [PATCH 2/3] bus: ti-sysc: rework the reset handling Date: Wed, 7 Aug 2019 15:46:04 +0300 [thread overview] Message-ID: <1565181965-21039-3-git-send-email-t-kristo@ti.com> (raw) In-Reply-To: <1565181965-21039-1-git-send-email-t-kristo@ti.com> If reset controllers are assigned to the ti-sysc target-module, only ti-sysc is going to be able to control these. Thus, remove all the disable_on_idle flag usage, and assert/de-assert the reset always in the idle path. Otherwise the reset signal will always just be de-asserted. Signed-off-by: Tero Kristo <t-kristo@ti.com> --- drivers/bus/ti-sysc.c | 25 +++++-------------------- 1 file changed, 5 insertions(+), 20 deletions(-) diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c index ad9c6d3..e08125a 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -95,7 +95,6 @@ struct sysc { unsigned int enabled:1; unsigned int needs_resume:1; unsigned int child_needs_resume:1; - unsigned int disable_on_idle:1; struct delayed_work idle_work; void (*clk_enable_quirk)(struct sysc *sysc); void (*clk_disable_quirk)(struct sysc *sysc); @@ -1031,8 +1030,7 @@ static int __maybe_unused sysc_runtime_suspend_legacy(struct device *dev, dev_err(dev, "%s: could not idle: %i\n", __func__, error); - if (ddata->disable_on_idle) - reset_control_assert(ddata->rsts); + reset_control_assert(ddata->rsts); return 0; } @@ -1043,8 +1041,7 @@ static int __maybe_unused sysc_runtime_resume_legacy(struct device *dev, struct ti_sysc_platform_data *pdata; int error; - if (ddata->disable_on_idle) - reset_control_deassert(ddata->rsts); + reset_control_deassert(ddata->rsts); pdata = dev_get_platdata(ddata->dev); if (!pdata) @@ -1091,8 +1088,7 @@ static int __maybe_unused sysc_runtime_suspend(struct device *dev) ddata->enabled = false; err_allow_idle: - if (ddata->disable_on_idle) - reset_control_assert(ddata->rsts); + reset_control_assert(ddata->rsts); sysc_clkdm_allow_idle(ddata); @@ -1112,8 +1108,7 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev) sysc_clkdm_deny_idle(ddata); - if (ddata->disable_on_idle) - reset_control_deassert(ddata->rsts); + reset_control_deassert(ddata->rsts); if (sysc_opt_clks_needed(ddata)) { error = sysc_enable_opt_clocks(ddata); @@ -1543,14 +1538,7 @@ static int sysc_rstctrl_reset_deassert(struct sysc *ddata, bool reset) return error; } - error = reset_control_deassert(ddata->rsts); - if (error == -EEXIST) - return 0; - - error = readx_poll_timeout(reset_control_status, ddata->rsts, val, - val == 0, 100, MAX_MODULE_SOFTRESET_WAIT); - - return error; + return reset_control_deassert(ddata->rsts); } /* @@ -2449,9 +2437,6 @@ static int sysc_probe(struct platform_device *pdev) pm_runtime_put(&pdev->dev); } - if (!of_get_available_child_count(ddata->dev->of_node)) - ddata->disable_on_idle = true; - return 0; err: -- 1.9.1 -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
WARNING: multiple messages have this Message-ID (diff)
From: Tero Kristo <t-kristo@ti.com> To: linux-omap@vger.kernel.org, tony@atomide.com, s-anna@ti.com Cc: linux-kernel@vger.kernel.org Subject: [PATCH 2/3] bus: ti-sysc: rework the reset handling Date: Wed, 7 Aug 2019 15:46:04 +0300 [thread overview] Message-ID: <1565181965-21039-3-git-send-email-t-kristo@ti.com> (raw) In-Reply-To: <1565181965-21039-1-git-send-email-t-kristo@ti.com> If reset controllers are assigned to the ti-sysc target-module, only ti-sysc is going to be able to control these. Thus, remove all the disable_on_idle flag usage, and assert/de-assert the reset always in the idle path. Otherwise the reset signal will always just be de-asserted. Signed-off-by: Tero Kristo <t-kristo@ti.com> --- drivers/bus/ti-sysc.c | 25 +++++-------------------- 1 file changed, 5 insertions(+), 20 deletions(-) diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c index ad9c6d3..e08125a 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -95,7 +95,6 @@ struct sysc { unsigned int enabled:1; unsigned int needs_resume:1; unsigned int child_needs_resume:1; - unsigned int disable_on_idle:1; struct delayed_work idle_work; void (*clk_enable_quirk)(struct sysc *sysc); void (*clk_disable_quirk)(struct sysc *sysc); @@ -1031,8 +1030,7 @@ static int __maybe_unused sysc_runtime_suspend_legacy(struct device *dev, dev_err(dev, "%s: could not idle: %i\n", __func__, error); - if (ddata->disable_on_idle) - reset_control_assert(ddata->rsts); + reset_control_assert(ddata->rsts); return 0; } @@ -1043,8 +1041,7 @@ static int __maybe_unused sysc_runtime_resume_legacy(struct device *dev, struct ti_sysc_platform_data *pdata; int error; - if (ddata->disable_on_idle) - reset_control_deassert(ddata->rsts); + reset_control_deassert(ddata->rsts); pdata = dev_get_platdata(ddata->dev); if (!pdata) @@ -1091,8 +1088,7 @@ static int __maybe_unused sysc_runtime_suspend(struct device *dev) ddata->enabled = false; err_allow_idle: - if (ddata->disable_on_idle) - reset_control_assert(ddata->rsts); + reset_control_assert(ddata->rsts); sysc_clkdm_allow_idle(ddata); @@ -1112,8 +1108,7 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev) sysc_clkdm_deny_idle(ddata); - if (ddata->disable_on_idle) - reset_control_deassert(ddata->rsts); + reset_control_deassert(ddata->rsts); if (sysc_opt_clks_needed(ddata)) { error = sysc_enable_opt_clocks(ddata); @@ -1543,14 +1538,7 @@ static int sysc_rstctrl_reset_deassert(struct sysc *ddata, bool reset) return error; } - error = reset_control_deassert(ddata->rsts); - if (error == -EEXIST) - return 0; - - error = readx_poll_timeout(reset_control_status, ddata->rsts, val, - val == 0, 100, MAX_MODULE_SOFTRESET_WAIT); - - return error; + return reset_control_deassert(ddata->rsts); } /* @@ -2449,9 +2437,6 @@ static int sysc_probe(struct platform_device *pdev) pm_runtime_put(&pdev->dev); } - if (!of_get_available_child_count(ddata->dev->of_node)) - ddata->disable_on_idle = true; - return 0; err: -- 1.9.1 -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next prev parent reply other threads:[~2019-08-07 12:46 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-08-07 12:46 [PATCH 0/3] bus: ti-sysc: fixes for reset handling Tero Kristo 2019-08-07 12:46 ` Tero Kristo 2019-08-07 12:46 ` [PATCH 1/3] bus: ti-sysc: re-order the clkdm control around " Tero Kristo 2019-08-07 12:46 ` Tero Kristo 2019-08-07 12:46 ` Tero Kristo [this message] 2019-08-07 12:46 ` [PATCH 2/3] bus: ti-sysc: rework the " Tero Kristo 2019-08-07 12:46 ` [PATCH 3/3] bus: ti-sysc: allow reset sharing across devices Tero Kristo 2019-08-07 12:46 ` Tero Kristo 2019-08-13 11:33 ` [PATCH 0/3] bus: ti-sysc: fixes for reset handling Tony Lindgren
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