From: Vivek Gautam <gautam.vivek@samsung.com>
To: linux-usb@vger.kernel.org
Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org,
gregkh@linuxfoundation.org, balbi@ti.com, kishon@ti.com,
kgene.kim@samsung.com, Vivek Gautam <gautam.vivek@samsung.com>
Subject: [PATCH 1/5] usb: dwc3: exynos: Add support for SCLK present on Exynos7
Date: Thu, 28 Aug 2014 13:31:56 +0530 [thread overview]
Message-ID: <1409212920-28526-2-git-send-email-gautam.vivek@samsung.com> (raw)
In-Reply-To: <1409212920-28526-1-git-send-email-gautam.vivek@samsung.com>
Exynos7 also has a separate special gate clock going to the IP
apart from the usual AHB clock. So add support for the same.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
---
drivers/usb/dwc3/dwc3-exynos.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index f9fb8ad..bab6395 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -35,6 +35,7 @@ struct dwc3_exynos {
struct device *dev;
struct clk *clk;
+ struct clk *sclk;
struct regulator *vdd33;
struct regulator *vdd10;
};
@@ -141,10 +142,17 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
return -EINVAL;
}
+ /* Exynos7 has a special gate clock going to this IP */
+ exynos->sclk = devm_clk_get(dev, "usbdrd30_sclk");
+ if (IS_ERR(exynos->sclk))
+ dev_warn(dev, "couldn't get sclk\n");
+
exynos->dev = dev;
exynos->clk = clk;
clk_prepare_enable(exynos->clk);
+ if (!IS_ERR(exynos->sclk))
+ clk_prepare_enable(exynos->sclk);
exynos->vdd33 = devm_regulator_get(dev, "vdd33");
if (IS_ERR(exynos->vdd33)) {
@@ -187,6 +195,8 @@ err4:
err3:
regulator_disable(exynos->vdd33);
err2:
+ if (!IS_ERR(exynos->sclk))
+ clk_disable_unprepare(exynos->sclk);
clk_disable_unprepare(clk);
return ret;
}
@@ -199,6 +209,8 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
platform_device_unregister(exynos->usb2_phy);
platform_device_unregister(exynos->usb3_phy);
+ if (!IS_ERR(exynos->sclk))
+ clk_disable_unprepare(exynos->sclk);
clk_disable_unprepare(exynos->clk);
regulator_disable(exynos->vdd33);
@@ -220,6 +232,8 @@ static int dwc3_exynos_suspend(struct device *dev)
{
struct dwc3_exynos *exynos = dev_get_drvdata(dev);
+ if (!IS_ERR(exynos->sclk))
+ clk_disable(exynos->sclk);
clk_disable(exynos->clk);
regulator_disable(exynos->vdd33);
@@ -245,6 +259,8 @@ static int dwc3_exynos_resume(struct device *dev)
}
clk_enable(exynos->clk);
+ if (!IS_ERR(exynos->sclk))
+ clk_enable(exynos->sclk);
/* runtime set active to reflect active state. */
pm_runtime_disable(dev);
--
1.7.10.4
next prev parent reply other threads:[~2014-08-28 8:02 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-28 8:01 [PATCH 0/5] usb: dwc3/phy-exynos5-usbdrd: Extend support to Exynos7 Vivek Gautam
2014-08-28 8:01 ` Vivek Gautam [this message]
2014-08-28 18:48 ` [PATCH 1/5] usb: dwc3: exynos: Add support for SCLK present on Exynos7 Mark Rutland
2014-09-02 10:39 ` Vivek Gautam
2014-09-02 11:01 ` Mark Rutland
2014-09-02 14:35 ` Felipe Balbi
2014-08-28 8:01 ` [PATCH 2/5] phy: exynos5-usbdrd: Add pipe-clk and utmi-clk support Vivek Gautam
2014-08-28 18:50 ` Mark Rutland
2014-08-28 8:01 ` [PATCH 3/5] phy: exynos5-usbdrd: Add facility for VBUS-BOOST-5V supply Vivek Gautam
2014-08-28 19:16 ` Felipe Balbi
2014-09-01 7:57 ` Vivek Gautam
2014-08-28 8:01 ` [PATCH 4/5] usb: dwc3: Adding Kconfig dependency for Exynos7 Vivek Gautam
2014-08-28 19:28 ` Felipe Balbi
2014-09-03 3:53 ` Vivek Gautam
2014-08-28 8:02 ` [PATCH 5/5] phy: exynos5-usbdrd: " Vivek Gautam
2014-08-28 15:06 ` Daniele Forsi
2014-09-01 8:00 ` Vivek Gautam
2014-09-02 14:37 ` Felipe Balbi
2014-09-03 4:02 ` Vivek Gautam
2014-09-03 14:46 ` Felipe Balbi
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