usb: phy: msm: Use reset framework for LINK and PHY resets
Using reset framework eliminate need of platform specific callbacks and enable reset lines to be specified in DT files. Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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@ -32,6 +32,7 @@
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#include <linux/pm_runtime.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/reset.h>
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#include <linux/usb.h>
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#include <linux/usb/otg.h>
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@ -235,12 +236,15 @@ static void ulpi_init(struct msm_otg *motg)
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static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert)
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{
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int ret = 0;
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int ret;
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if (!motg->pdata->link_clk_reset)
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return ret;
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if (motg->pdata->link_clk_reset)
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ret = motg->pdata->link_clk_reset(motg->clk, assert);
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else if (assert)
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ret = reset_control_assert(motg->link_rst);
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else
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ret = reset_control_deassert(motg->link_rst);
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ret = motg->pdata->link_clk_reset(motg->clk, assert);
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if (ret)
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dev_err(motg->phy.dev, "usb link clk reset %s failed\n",
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assert ? "assert" : "deassert");
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@ -250,12 +254,13 @@ static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert)
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static int msm_otg_phy_clk_reset(struct msm_otg *motg)
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{
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int ret = 0;
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int ret;
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if (!motg->pdata->phy_clk_reset)
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return ret;
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if (motg->pdata->phy_clk_reset)
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ret = motg->pdata->phy_clk_reset(motg->phy_reset_clk);
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else
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ret = reset_control_reset(motg->phy_rst);
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ret = motg->pdata->phy_clk_reset(motg->phy_reset_clk);
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if (ret)
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dev_err(motg->phy.dev, "usb phy clk reset failed\n");
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@ -1377,6 +1382,14 @@ static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg)
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id = of_match_device(msm_otg_dt_match, &pdev->dev);
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pdata->phy_type = (int) id->data;
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motg->link_rst = devm_reset_control_get(&pdev->dev, "link");
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if (IS_ERR(motg->link_rst))
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return PTR_ERR(motg->link_rst);
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motg->phy_rst = devm_reset_control_get(&pdev->dev, "phy");
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if (IS_ERR(motg->phy_rst))
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return PTR_ERR(motg->phy_rst);
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pdata->mode = of_usb_get_dr_mode(node);
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if (pdata->mode == USB_DR_MODE_UNKNOWN)
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pdata->mode = USB_DR_MODE_OTG;
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@ -165,6 +165,9 @@ struct msm_otg {
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struct regulator *v3p3;
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struct regulator *v1p8;
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struct regulator *vddcx;
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struct reset_control *phy_rst;
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struct reset_control *link_rst;
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};
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#endif
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