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Wed, 4 Aug 2021 11:44:33 +0000 (GMT) From: Marek Szyprowski To: linux-usb@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Marek Szyprowski , Minas Harutyunyan , Artur Petrosyan , Felipe Balbi , Bartlomiej Zolnierkiewicz , Krzysztof Kozlowski Subject: [PATCH 2/2] usb: dwc2: add true DWC2_POWER_DOWN_PARAM_NONE state Date: Wed, 4 Aug 2021 13:44:21 +0200 Message-Id: <20210804114421.10282-2-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210804114421.10282-1-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrCIsWRmVeSWpSXmKPExsWy7djP87qLarkSDd43MVr03jGx2DhjPavF sbYn7BaNv/ayW5w/v4Hd4vKuOWwWM87vY7JYtKyV2WLtkbvsDpwem1Z1snn0bVnF6LFl/2dG j8+b5AJYorhsUlJzMstSi/TtErgyFl6cylbQIV/R/3otUwPjNskuRk4OCQETiZbzD9lBbCGB FYwSp7eIdjFyAdlfGCXurF/HCuF8ZpT4sKmbFabj/5sTLBCJ5YwSh8+uYYZr+XG1iw2kik3A UKLrLYQtIpAgcWTze7AiZoFeJonp6zcygySEBTwl3pz9wwJiswioSrTdPw0W5xWwlei+cYYN Yp28xOoNB8DinAJ2Em+bPoLdJCEwl0OiY+VUqJtcJOa8Oc4MYQtLvDq+hR3ClpH4v3M+E0RD M6PEw3Nr2SGcHkaJy00zGCGqrCXunPsFtI4D6D5NifW79CHCjhKvnhxnAglLCPBJ3HgrCBJm BjInbZvODBHmlehoE4KoVpOYdXwd3NqDFy5BneMh8f9DHxskhCYCA7XlLfsERvlZCMsWMDKu YhRPLS3OTU8tNspLLdcrTswtLs1L10vOz93ECEwYp/8d/7KDcfmrj3qHGJk4GA8xSnAwK4nw ht7gSBTiTUmsrEotyo8vKs1JLT7EKM3BoiTOm7RlTbyQQHpiSWp2ampBahFMlomDU6qBaTG7 l4lUssmq7Oqb1XoV3tFfV2xc1Lk83mnP2VvBP0tNn0gue/8qa95NzrX7wg2fiOwqSPote8F3 ztuuOok7cWuPzpsqylQ0Peai4Lwvpy97JtjN6GoyUrl7z3Wni/y6m3ZnzPceyd1peOvHq/qF lR1SW043qdWcSbbQk5zbNuH7RAap1ackV8x2WaK2ZXvI/5p1qhu3ZW16FvMkMLTI3H+pqvv8 pp7u/s4IZt7e3r9h5f9Zo1kPxm7rO3HP7q7j54zrrdJ7XZYmMyq/m7Qy/Jb+hgfb6n4qv/9Q vE2d7/qOBsHw7aEnmx1zVO8HmiruYOZ7YFu0/8AnU7eOu4LpWa7ZbTvsjp4+URe2ZtuKaiWW 4oxEQy3mouJEAJtJoUmHAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrKLMWRmVeSWpSXmKPExsVy+t/xe7oLa7kSDZbNVrPovWNisXHGelaL Y21P2C0af+1ltzh/fgO7xeVdc9gsZpzfx2SxaFkrs8XaI3fZHTg9Nq3qZPPo27KK0WPL/s+M Hp83yQWwROnZFOWXlqQqZOQXl9gqRRtaGOkZWlroGZlY6hkam8daGZkq6dvZpKTmZJalFunb JehlLLw4la2gQ76i//VapgbGbZJdjJwcEgImEv/fnGDpYuTiEBJYyijxZ94fRoiEjMTJaQ2s ELawxJ9rXWwQRZ8YJU7euMgMkmATMJToeguS4OQQEUiSuP7kNNgkZoGJTBKTZv4HSwgLeEq8 OfuHBcRmEVCVaLt/GqyZV8BWovvGGTaIDfISqzccAItzCthJvG36CLZZCKjmyMeXjBMY+RYw MqxiFEktLc5Nzy020itOzC0uzUvXS87P3cQIDN9tx35u2cG48tVHvUOMTByMhxglOJiVRHhD b3AkCvGmJFZWpRblxxeV5qQWH2I0BbpjIrOUaHI+MILySuINzQxMDU3MLA1MLc2MlcR5TY6s iRcSSE8sSc1OTS1ILYLpY+LglGpgsmo3E63zqWSb/EV/pYm8UcWkswnldamBd6bwqpyVrr7a 4rghgfd+S3gmc1VOwqe3UQJMLhs8mU+zPy1dcO/alW87DjR8LtCafrnpifaFSJltLozzlA+d LWH/tbN1dTO/d2ftxtW/ci5vmRXwND9Kl0V2Bu/VsJuCGpPW/Lvypr/Gfsv0YM2CN+sq9wUk 3PlnvJFzd8ZTHZs4hZLD6/icX7/fVmRnu6tnR7DS04stl+MO84m29p8+eHfR0hmffLkbj0et fMIj9bgmroAhP8D6xLfVDQrORnbrlgm0S+82El6oySDWeG6x+X1Rx1RWN/3AI8J+gdGrhLKq 9Vv3R9zmsYtRv8Gx9ui15EOGAveVWIozEg21mIuKEwG0+idn6AIAAA== X-CMS-MailID: 20210804114433eucas1p255ac5db7e56a8d5e50b8937c07559587 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20210804114433eucas1p255ac5db7e56a8d5e50b8937c07559587 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20210804114433eucas1p255ac5db7e56a8d5e50b8937c07559587 References: <20210804114421.10282-1-m.szyprowski@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Refactor no_clock_gating flag into separate DWC2_POWER_DOWN_PARAM_NONE power down state. Suggested-by: Minas Harutyunyan Signed-off-by: Marek Szyprowski --- This is a follow-up of this discussion: https://lore.kernel.org/linux-usb/26099de1-826f-42bf-0de7-759a47faf4a0@samsung.com/ This should be applied on top of v5.14-rc3. --- drivers/usb/dwc2/core.h | 6 ++---- drivers/usb/dwc2/core_intr.c | 6 ++++-- drivers/usb/dwc2/hcd.c | 8 ++++---- drivers/usb/dwc2/params.c | 4 ++-- 4 files changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 38b6733d26ec..d590eda952a2 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -382,12 +382,10 @@ enum dwc2_ep0_state { * If power_down is enabled, the controller will enter * power_down in both peripheral and host mode when * needed. + * (-1) - None * 0 - Clock gating (default) * 1 - Partial power down * 2 - Hibernation - * @no_clock_gating: Specifies whether to avoid clock gating feature. - * 0 - No (use clock gating) - * 1 - Yes (avoid it) * @lpm: Enable LPM support. * 0 - No * 1 - Yes @@ -482,10 +480,10 @@ struct dwc2_core_params { bool external_id_pin_ctl; int power_down; +#define DWC2_POWER_DOWN_PARAM_NONE (-1) #define DWC2_POWER_DOWN_PARAM_CLOCK_GATING 0 #define DWC2_POWER_DOWN_PARAM_PARTIAL 1 #define DWC2_POWER_DOWN_PARAM_HIBERNATION 2 - bool no_clock_gating; bool lpm; bool lpm_clock_gating; diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 660abff1d42b..cdd39199780e 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -556,8 +556,10 @@ static void dwc2_handle_usb_suspend_intr(struct dwc2_hsotg *hsotg) * If neither hibernation nor partial power down are supported, * clock gating is used to save power. */ - if (!hsotg->params.no_clock_gating) - dwc2_gadget_enter_clock_gating(hsotg); + dwc2_gadget_enter_clock_gating(hsotg); + break; + case DWC2_POWER_DOWN_PARAM_NONE: + break; } /* diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 067f2770c2ef..d06bb927a073 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -3338,8 +3338,9 @@ int dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex) * If not hibernation nor partial power down are supported, * clock gating is used to save power. */ - if (!hsotg->params.no_clock_gating) - dwc2_host_enter_clock_gating(hsotg); + dwc2_host_enter_clock_gating(hsotg); + break; + case DWC2_POWER_DOWN_PARAM_NONE: break; } @@ -4403,8 +4404,7 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) * If not hibernation nor partial power down are supported, * clock gating is used to save power. */ - if (!hsotg->params.no_clock_gating) - dwc2_host_enter_clock_gating(hsotg); + dwc2_host_enter_clock_gating(hsotg); /* After entering suspend, hardware is not accessible */ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index dac26410b575..2ad9f407ca40 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -75,8 +75,7 @@ static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg) { struct dwc2_core_params *p = &hsotg->params; - p->power_down = DWC2_POWER_DOWN_PARAM_CLOCK_GATING; - p->no_clock_gating = true; + p->power_down = DWC2_POWER_DOWN_PARAM_NONE; p->phy_utmi_width = 8; } @@ -585,6 +584,7 @@ static void dwc2_check_param_power_down(struct dwc2_hsotg *hsotg) int param = hsotg->params.power_down; switch (param) { + case DWC2_POWER_DOWN_PARAM_NONE: case DWC2_POWER_DOWN_PARAM_CLOCK_GATING: break; case DWC2_POWER_DOWN_PARAM_PARTIAL: -- 2.17.1