[v5,17/26] phy: sun4i-usb: Use CLK and RESET support
diff mbox series

Message ID 20181231165927.13803-18-jagan@amarulasolutions.com
State New
Headers show
Series
  • [v5,01/26] clk: Add Allwinner A64 CLK driver
Related show

Commit Message

Jagan Teki Dec. 31, 2018, 4:59 p.m. UTC 
Now clock and reset drivers are available for respective
SoC's so use clk and reset ops on phy driver.

Cc: Marek Vasut <marex@denx.de> 
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 drivers/phy/allwinner/phy-sun4i-usb.c | 77 ++++++++++++++++++++-------
 1 file changed, 57 insertions(+), 20 deletions(-)

Comments

Marek Vasut Dec. 31, 2018, 6:29 p.m. UTC | #1 
On 12/31/18 5:59 PM, Jagan Teki wrote:
> Now clock and reset drivers are available for respective
> SoC's so use clk and reset ops on phy driver.
> 
> Cc: Marek Vasut <marex@denx.de> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>

Reviewed-by: Marek Vasut <marex@denx.de>

btw I hope this is planned for _after_ 2019.01 release ?

[...]
Jagan Teki Dec. 31, 2018, 6:38 p.m. UTC | #2 
On Tue, Jan 1, 2019 at 12:01 AM Marek Vasut <marex@denx.de> wrote:
>
> On 12/31/18 5:59 PM, Jagan Teki wrote:
> > Now clock and reset drivers are available for respective
> > SoC's so use clk and reset ops on phy driver.
> >
> > Cc: Marek Vasut <marex@denx.de>
> > Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> > Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
>
> Reviewed-by: Marek Vasut <marex@denx.de>
>
> btw I hope this is planned for _after_ 2019.01 release ?

Yes.

Patch
diff mbox series 

diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c
index a7d7e3f044..f206fa3f5d 100644
--- a/drivers/phy/allwinner/phy-sun4i-usb.c
+++ b/drivers/phy/allwinner/phy-sun4i-usb.c
@@ -11,10 +11,12 @@ 
  */
 
 #include <common.h>
+#include <clk.h>
 #include <dm.h>
 #include <dm/device.h>
 #include <generic-phy.h>
 #include <phy-sun4i-usb.h>
+#include <reset.h>
 #include <asm/gpio.h>
 #include <asm/io.h>
 #include <asm/arch/clock.h>
@@ -80,6 +82,7 @@  struct sun4i_usb_phy_cfg {
 	enum sun4i_usb_phy_type type;
 	u32 disc_thresh;
 	u8 phyctl_offset;
+	bool dedicated_clocks;
 	bool enable_pmu_unk1;
 	bool phy0_dual_route;
 };
@@ -88,30 +91,21 @@  struct sun4i_usb_phy_info {
 	const char *gpio_vbus;
 	const char *gpio_vbus_det;
 	const char *gpio_id_det;
-	int rst_mask;
 } phy_info[] = {
 	{
 		.gpio_vbus = CONFIG_USB0_VBUS_PIN,
 		.gpio_vbus_det = CONFIG_USB0_VBUS_DET,
 		.gpio_id_det = CONFIG_USB0_ID_DET,
-		.rst_mask = (CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK),
 	},
 	{
 		.gpio_vbus = CONFIG_USB1_VBUS_PIN,
 		.gpio_vbus_det = NULL,
 		.gpio_id_det = NULL,
-		.rst_mask = (CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK),
 	},
 	{
 		.gpio_vbus = CONFIG_USB2_VBUS_PIN,
 		.gpio_vbus_det = NULL,
 		.gpio_id_det = NULL,
-#ifdef CONFIG_MACH_SUN8I_A83T
-		.rst_mask = (CCM_USB_CTRL_HSIC_RST | CCM_USB_CTRL_HSIC_CLK |
-			     CCM_USB_CTRL_12M_CLK),
-#else
-		.rst_mask = (CCM_USB_CTRL_PHY2_RST | CCM_USB_CTRL_PHY2_CLK),
-#endif
 	},
 	{
 		.gpio_vbus = CONFIG_USB3_VBUS_PIN,
@@ -126,13 +120,13 @@  struct sun4i_usb_phy_plat {
 	int gpio_vbus;
 	int gpio_vbus_det;
 	int gpio_id_det;
-	int rst_mask;
+	struct clk clocks;
+	struct reset_ctl resets;
 	int id;
 };
 
 struct sun4i_usb_phy_data {
 	void __iomem *base;
-	struct sunxi_ccm_reg *ccm;
 	const struct sun4i_usb_phy_cfg *cfg;
 	struct sun4i_usb_phy_plat *usb_phy;
 };
@@ -266,8 +260,19 @@  static int sun4i_usb_phy_init(struct phy *phy)
 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
 	u32 val;
+	int ret;
 
-	setbits_le32(&data->ccm->usb_clk_cfg, usb_phy->rst_mask);
+	ret = clk_enable(&usb_phy->clocks);
+	if (ret) {
+		dev_err(dev, "failed to enable usb_%ldphy clock\n", phy->id);
+		return ret;
+	}
+
+	ret = reset_deassert(&usb_phy->resets);
+	if (ret) {
+		dev_err(dev, "failed to deassert usb_%ldreset reset\n", phy->id);
+		return ret;
+	}
 
 	if (data->cfg->type == sun8i_a83t_phy) {
 		if (phy->id == 0) {
@@ -308,6 +313,7 @@  static int sun4i_usb_phy_exit(struct phy *phy)
 {
 	struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
 	struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
+	int ret;
 
 	if (phy->id == 0) {
 		if (data->cfg->type == sun8i_a83t_phy) {
@@ -320,7 +326,17 @@  static int sun4i_usb_phy_exit(struct phy *phy)
 
 	sun4i_usb_phy_passby(phy, false);
 
-	clrbits_le32(&data->ccm->usb_clk_cfg, usb_phy->rst_mask);
+	ret = clk_disable(&usb_phy->clocks);
+	if (ret) {
+		dev_err(dev, "failed to disable usb_%ldphy clock\n", phy->id);
+		return ret;
+	}
+
+	ret = reset_assert(&usb_phy->resets);
+	if (ret) {
+		dev_err(dev, "failed to assert usb_%ldreset reset\n", phy->id);
+		return ret;
+	}
 
 	return 0;
 }
@@ -407,10 +423,6 @@  static int sun4i_usb_phy_probe(struct udevice *dev)
 	if (IS_ERR(data->base))
 		return PTR_ERR(data->base);
 
-	data->ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-	if (IS_ERR(data->ccm))
-		return PTR_ERR(data->ccm);
-
 	data->usb_phy = plat;
 	for (i = 0; i < data->cfg->num_phys; i++) {
 		struct sun4i_usb_phy_plat *phy = &plat[i];
@@ -448,6 +460,24 @@  static int sun4i_usb_phy_probe(struct udevice *dev)
 			sunxi_gpio_set_pull(phy->gpio_id_det, SUNXI_GPIO_PULL_UP);
 		}
 
+		if (data->cfg->dedicated_clocks)
+			snprintf(name, sizeof(name), "usb%d_phy", i);
+		else
+			strlcpy(name, "usb_phy", sizeof(name));
+
+		ret = clk_get_by_name(dev, name, &phy->clocks);
+		if (ret) {
+			dev_err(dev, "failed to get usb%d_phy clock phandle\n", i);
+			return ret;
+		}
+
+		snprintf(name, sizeof(name), "usb%d_reset", i);
+		ret = reset_get_by_name(dev, name, &phy->resets);
+		if (ret) {
+			dev_err(dev, "failed to get usb%d_reset reset phandle\n", i);
+			return ret;
+		}
+
 		if (i || data->cfg->phy0_dual_route) {
 			snprintf(name, sizeof(name), "pmu%d", i);
 			phy->pmu = (void __iomem *)devfdt_get_addr_name(dev, name);
@@ -456,9 +486,6 @@  static int sun4i_usb_phy_probe(struct udevice *dev)
 		}
 
 		phy->id = i;
-		phy->rst_mask = info->rst_mask;
-		if ((data->cfg->type == sun8i_h3_phy) && (phy->id == 3))
-			phy->rst_mask = (BIT(3) | BIT(11));
 	};
 
 	debug("Allwinner Sun4I USB PHY driver loaded\n");
@@ -470,6 +497,7 @@  static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
 	.type = sun4i_a10_phy,
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A10,
+	.dedicated_clocks = false,
 	.enable_pmu_unk1 = false,
 };
 
@@ -478,6 +506,7 @@  static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
 	.type = sun4i_a10_phy,
 	.disc_thresh = 2,
 	.phyctl_offset = REG_PHYCTL_A10,
+	.dedicated_clocks = false,
 	.enable_pmu_unk1 = false,
 };
 
@@ -486,6 +515,7 @@  static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
 	.type = sun6i_a31_phy,
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A10,
+	.dedicated_clocks = true,
 	.enable_pmu_unk1 = false,
 };
 
@@ -494,6 +524,7 @@  static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
 	.type = sun4i_a10_phy,
 	.disc_thresh = 2,
 	.phyctl_offset = REG_PHYCTL_A10,
+	.dedicated_clocks = false,
 	.enable_pmu_unk1 = false,
 };
 
@@ -502,6 +533,7 @@  static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
 	.type = sun4i_a10_phy,
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A10,
+	.dedicated_clocks = true,
 	.enable_pmu_unk1 = false,
 };
 
@@ -510,6 +542,7 @@  static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
 	.type = sun8i_a33_phy,
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A33,
+	.dedicated_clocks = true,
 	.enable_pmu_unk1 = false,
 };
 
@@ -517,6 +550,7 @@  static const struct sun4i_usb_phy_cfg sun8i_a83t_cfg = {
 	.num_phys = 3,
 	.type = sun8i_a83t_phy,
 	.phyctl_offset = REG_PHYCTL_A33,
+	.dedicated_clocks = true,
 };
 
 static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
@@ -524,6 +558,7 @@  static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
 	.type = sun8i_h3_phy,
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A33,
+	.dedicated_clocks = true,
 	.enable_pmu_unk1 = true,
 	.phy0_dual_route = true,
 };
@@ -533,6 +568,7 @@  static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = {
 	.type = sun8i_v3s_phy,
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A33,
+	.dedicated_clocks = true,
 	.enable_pmu_unk1 = true,
 	.phy0_dual_route = true,
 };
@@ -542,6 +578,7 @@  static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = {
 	.type = sun50i_a64_phy,
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A33,
+	.dedicated_clocks = true,
 	.enable_pmu_unk1 = true,
 	.phy0_dual_route = true,
 };