Commit 2a6c0b82 authored by 周琰杰 (Zhou Yanjie)'s avatar 周琰杰 (Zhou Yanjie) Committed by Felipe Balbi
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USB: PHY: JZ4770: Add support for new Ingenic SoCs. 



Add support for probing the phy-jz4770 driver on the JZ4780 SoC,
the X1000 SoC and the X1830 SoC from Ingenic.

Tested-by: default avatar周正 (Zhou Zheng) <sernia.zhou@foxmail.com>
Co-developed-by: default avatar漆鹏振 (Qi Pengzhen) <aric.pzqi@ingenic.com>
Signed-off-by: default avatar漆鹏振 (Qi Pengzhen) <aric.pzqi@ingenic.com>
Signed-off-by: default avatar周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: default avatarFelipe Balbi <balbi@kernel.org>
parent 6e5478ae

drivers/usb/phy/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -185,11 +185,11 @@ config USB_ULPI_VIEWPORT 
	  controllers with a viewport register (e.g. Chipidea/ARC controllers).



config JZ4770_PHY

	tristate "Ingenic JZ4770 Transceiver Driver"

	tristate "Ingenic SoCs Transceiver Driver"

	depends on MIPS || COMPILE_TEST

	select USB_PHY

	help

	  This driver provides PHY support for the USB controller found

	  on the JZ4770 SoC from Ingenic.

	  on the JZ-series and X-series SoCs from Ingenic.



endmenu

drivers/usb/phy/phy-jz4770.c

+161 −31
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Ingenic JZ4770 USB PHY driver

 * Ingenic SoCs USB PHY driver

 * Copyright (c) Paul Cercueil <paul@crapouillou.net>

 * Copyright (c) 漆鹏振 (Qi Pengzhen) <aric.pzqi@ingenic.com>

 * Copyright (c) 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>

 */



#include <linux/clk.h>
@@ -12,12 +14,13 @@ 
#include <linux/usb/otg.h>

#include <linux/usb/phy.h>



/* OTGPHY register offsets */

#define REG_USBPCR_OFFSET	0x00

#define REG_USBRDT_OFFSET	0x04

#define REG_USBVBFIL_OFFSET	0x08

#define REG_USBPCR1_OFFSET	0x0c



/* USBPCR */

/* bits within the USBPCR register */

#define USBPCR_USB_MODE		BIT(31)

#define USBPCR_AVLD_REG		BIT(30)

#define USBPCR_COMMONONN	BIT(25)
@@ -44,11 +47,21 @@ 


#define USBPCR_SQRXTUNE_LSB	11

#define USBPCR_SQRXTUNE_MASK	GENMASK(13, USBPCR_SQRXTUNE_LSB)

#define USBPCR_SQRXTUNE_DCR_20PCT	(0x7 << USBPCR_SQRXTUNE_LSB)

#define USBPCR_SQRXTUNE_DFT	(0x3 << USBPCR_SQRXTUNE_LSB)



#define USBPCR_TXFSLSTUNE_LSB	7

#define USBPCR_TXFSLSTUNE_MASK	GENMASK(10, USBPCR_TXFSLSTUNE_LSB)

#define USBPCR_TXFSLSTUNE_DCR_50PPT	(0xf << USBPCR_TXFSLSTUNE_LSB)

#define USBPCR_TXFSLSTUNE_DCR_25PPT	(0x7 << USBPCR_TXFSLSTUNE_LSB)

#define USBPCR_TXFSLSTUNE_DFT	(0x3 << USBPCR_TXFSLSTUNE_LSB)

#define USBPCR_TXFSLSTUNE_INC_25PPT	(0x1 << USBPCR_TXFSLSTUNE_LSB)

#define USBPCR_TXFSLSTUNE_INC_50PPT	(0x0 << USBPCR_TXFSLSTUNE_LSB)



#define USBPCR_TXHSXVTUNE_LSB		4

#define USBPCR_TXHSXVTUNE_MASK		GENMASK(5, USBPCR_TXHSXVTUNE_LSB)

#define USBPCR_TXHSXVTUNE_DFT		(0x3 << USBPCR_TXHSXVTUNE_LSB)

#define USBPCR_TXHSXVTUNE_DCR_15MV	(0x1 << USBPCR_TXHSXVTUNE_LSB)



#define USBPCR_TXRISETUNE_LSB	4

#define USBPCR_TXRISETUNE_MASK	GENMASK(5, USBPCR_TXRISETUNE_LSB)
@@ -56,14 +69,40 @@ 


#define USBPCR_TXVREFTUNE_LSB	0

#define USBPCR_TXVREFTUNE_MASK	GENMASK(3, USBPCR_TXVREFTUNE_LSB)

#define USBPCR_TXVREFTUNE_INC_25PPT	(0x7 << USBPCR_TXVREFTUNE_LSB)

#define USBPCR_TXVREFTUNE_DFT	(0x5 << USBPCR_TXVREFTUNE_LSB)



/* USBRDT */

/* bits within the USBRDTR register */

#define USBRDT_UTMI_RST				BIT(27)

#define USBRDT_HB_MASK				BIT(26)

#define USBRDT_VBFIL_LD_EN	BIT(25)

#define USBRDT_IDDIG_EN		BIT(24)

#define USBRDT_IDDIG_REG	BIT(23)

#define USBRDT_VBFIL_EN				BIT(2)



/* bits within the USBPCR1 register */

#define USBPCR1_BVLD_REG			BIT(31)

#define USBPCR1_DPPD				BIT(29)

#define USBPCR1_DMPD				BIT(28)

#define USBPCR1_USB_SEL				BIT(28)

#define USBPCR1_WORD_IF_16BIT		BIT(19)



enum ingenic_usb_phy_version {

	ID_JZ4770,

	ID_JZ4780,

	ID_X1000,

	ID_X1830,

};



struct ingenic_soc_info {

	enum ingenic_usb_phy_version version;



	void (*usb_phy_init)(struct usb_phy *phy);

};



struct jz4770_phy {

	const struct ingenic_soc_info *soc_info;



	struct usb_phy phy;

	struct usb_otg otg;

	struct device *dev;
@@ -82,12 +121,18 @@ static inline struct jz4770_phy *phy_to_jz4770_phy(struct usb_phy *phy) 
	return container_of(phy, struct jz4770_phy, phy);

}



static int jz4770_phy_set_peripheral(struct usb_otg *otg,

static int ingenic_usb_phy_set_peripheral(struct usb_otg *otg,

				     struct usb_gadget *gadget)

{

	struct jz4770_phy *priv = otg_to_jz4770_phy(otg);

	u32 reg;



	if (priv->soc_info->version >= ID_X1000) {

		reg = readl(priv->base + REG_USBPCR1_OFFSET);

		reg |= USBPCR1_BVLD_REG;

		writel(reg, priv->base + REG_USBPCR1_OFFSET);

	}



	reg = readl(priv->base + REG_USBPCR_OFFSET);

	reg &= ~USBPCR_USB_MODE;

	reg |= USBPCR_VBUSVLDEXT | USBPCR_VBUSVLDEXTSEL | USBPCR_OTG_DISABLE;
@@ -96,7 +141,7 @@ static int jz4770_phy_set_peripheral(struct usb_otg *otg, 
	return 0;

}



static int jz4770_phy_set_host(struct usb_otg *otg, struct usb_bus *host)

static int ingenic_usb_phy_set_host(struct usb_otg *otg, struct usb_bus *host)

{

	struct jz4770_phy *priv = otg_to_jz4770_phy(otg);

	u32 reg;
@@ -109,7 +154,7 @@ static int jz4770_phy_set_host(struct usb_otg *otg, struct usb_bus *host) 
	return 0;

}



static int jz4770_phy_init(struct usb_phy *phy)

static int ingenic_usb_phy_init(struct usb_phy *phy)

{

	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);

	int err;
@@ -127,11 +172,7 @@ static int jz4770_phy_init(struct usb_phy *phy) 
		return err;

	}



	reg = USBPCR_AVLD_REG | USBPCR_COMMONONN | USBPCR_IDPULLUP_ALWAYS |

		USBPCR_COMPDISTUNE_DFT | USBPCR_OTGTUNE_DFT | USBPCR_SQRXTUNE_DFT |

		USBPCR_TXFSLSTUNE_DFT | USBPCR_TXRISETUNE_DFT | USBPCR_TXVREFTUNE_DFT |

		USBPCR_POR;

	writel(reg, priv->base + REG_USBPCR_OFFSET);

	priv->soc_info->usb_phy_init(phy);



	/* Wait for PHY to reset */

	usleep_range(30, 300);
@@ -141,7 +182,7 @@ static int jz4770_phy_init(struct usb_phy *phy) 
	return 0;

}



static void jz4770_phy_shutdown(struct usb_phy *phy)

static void ingenic_usb_phy_shutdown(struct usb_phy *phy)

{

	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);
@@ -149,11 +190,100 @@ static void jz4770_phy_shutdown(struct usb_phy *phy) 
	regulator_disable(priv->vcc_supply);

}



static void jz4770_phy_remove(void *phy)

static void ingenic_usb_phy_remove(void *phy)

{

	usb_remove_phy(phy);

}



static void jz4770_usb_phy_init(struct usb_phy *phy)

{

	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);

	u32 reg;



	reg = USBPCR_AVLD_REG | USBPCR_COMMONONN | USBPCR_IDPULLUP_ALWAYS |

		USBPCR_COMPDISTUNE_DFT | USBPCR_OTGTUNE_DFT | USBPCR_SQRXTUNE_DFT |

		USBPCR_TXFSLSTUNE_DFT | USBPCR_TXRISETUNE_DFT | USBPCR_TXVREFTUNE_DFT |

		USBPCR_POR;

	writel(reg, priv->base + REG_USBPCR_OFFSET);

}



static void jz4780_usb_phy_init(struct usb_phy *phy)

{

	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);

	u32 reg;



	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_USB_SEL |

		USBPCR1_WORD_IF_16BIT;

	writel(reg, priv->base + REG_USBPCR1_OFFSET);



	reg = USBPCR_TXPREEMPHTUNE | USBPCR_COMMONONN | USBPCR_POR;

	writel(reg, priv->base + REG_USBPCR_OFFSET);

}



static void x1000_usb_phy_init(struct usb_phy *phy)

{

	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);

	u32 reg;



	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT;

	writel(reg, priv->base + REG_USBPCR1_OFFSET);



	reg = USBPCR_SQRXTUNE_DCR_20PCT | USBPCR_TXPREEMPHTUNE |

		USBPCR_TXHSXVTUNE_DCR_15MV | USBPCR_TXVREFTUNE_INC_25PPT |

		USBPCR_COMMONONN | USBPCR_POR;

	writel(reg, priv->base + REG_USBPCR_OFFSET);

}



static void x1830_usb_phy_init(struct usb_phy *phy)

{

	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);

	u32 reg;



	/* rdt */

	writel(USBRDT_VBFIL_EN | USBRDT_UTMI_RST, priv->base + REG_USBRDT_OFFSET);



	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT |

		USBPCR1_DMPD | USBPCR1_DPPD;

	writel(reg, priv->base + REG_USBPCR1_OFFSET);



	reg = USBPCR_IDPULLUP_OTG | USBPCR_VBUSVLDEXT |	USBPCR_TXPREEMPHTUNE |

		USBPCR_COMMONONN | USBPCR_POR;

	writel(reg, priv->base + REG_USBPCR_OFFSET);

}



static const struct ingenic_soc_info jz4770_soc_info = {

	.version = ID_JZ4770,



	.usb_phy_init = jz4770_usb_phy_init,

};



static const struct ingenic_soc_info jz4780_soc_info = {

	.version = ID_JZ4780,



	.usb_phy_init = jz4780_usb_phy_init,

};



static const struct ingenic_soc_info x1000_soc_info = {

	.version = ID_X1000,



	.usb_phy_init = x1000_usb_phy_init,

};



static const struct ingenic_soc_info x1830_soc_info = {

	.version = ID_X1830,



	.usb_phy_init = x1830_usb_phy_init,

};



static const struct of_device_id ingenic_usb_phy_of_matches[] = {

	{ .compatible = "ingenic,jz4770-phy", .data = &jz4770_soc_info },

	{ .compatible = "ingenic,jz4780-phy", .data = &jz4780_soc_info },

	{ .compatible = "ingenic,x1000-phy", .data = &x1000_soc_info },

	{ .compatible = "ingenic,x1830-phy", .data = &x1830_soc_info },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, ingenic_usb_phy_of_matches);



static int jz4770_phy_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;
@@ -164,18 +294,24 @@ static int jz4770_phy_probe(struct platform_device *pdev) 
	if (!priv)

		return -ENOMEM;



	priv->soc_info = device_get_match_data(&pdev->dev);

	if (!priv->soc_info) {

		dev_err(&pdev->dev, "Error: No device match found\n");

		return -ENODEV;

	}



	platform_set_drvdata(pdev, priv);

	priv->dev = dev;

	priv->phy.dev = dev;

	priv->phy.otg = &priv->otg;

	priv->phy.label = "jz4770-phy";

	priv->phy.init = jz4770_phy_init;

	priv->phy.shutdown = jz4770_phy_shutdown;

	priv->phy.label = "ingenic-usb-phy";

	priv->phy.init = ingenic_usb_phy_init;

	priv->phy.shutdown = ingenic_usb_phy_shutdown;



	priv->otg.state = OTG_STATE_UNDEFINED;

	priv->otg.usb_phy = &priv->phy;

	priv->otg.set_host = jz4770_phy_set_host;

	priv->otg.set_peripheral = jz4770_phy_set_peripheral;

	priv->otg.set_host = ingenic_usb_phy_set_host;

	priv->otg.set_peripheral = ingenic_usb_phy_set_peripheral;



	priv->base = devm_platform_ioremap_resource(pdev, 0);

	if (IS_ERR(priv->base)) {
@@ -206,26 +342,20 @@ static int jz4770_phy_probe(struct platform_device *pdev) 
		return err;

	}



	return devm_add_action_or_reset(dev, jz4770_phy_remove, &priv->phy);

	return devm_add_action_or_reset(dev, ingenic_usb_phy_remove, &priv->phy);

}



#ifdef CONFIG_OF

static const struct of_device_id jz4770_phy_of_matches[] = {

	{ .compatible = "ingenic,jz4770-phy" },

	{ }

};

MODULE_DEVICE_TABLE(of, jz4770_phy_of_matches);

#endif



static struct platform_driver jz4770_phy_driver = {

static struct platform_driver ingenic_phy_driver = {

	.probe		= jz4770_phy_probe,

	.driver		= {

		.name	= "jz4770-phy",

		.of_match_table = of_match_ptr(jz4770_phy_of_matches),

		.of_match_table = of_match_ptr(ingenic_usb_phy_of_matches),

	},

};

module_platform_driver(jz4770_phy_driver);

module_platform_driver(ingenic_phy_driver);



MODULE_AUTHOR("周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>");

MODULE_AUTHOR("漆鹏振 (Qi Pengzhen) <aric.pzqi@ingenic.com>");

MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");

MODULE_DESCRIPTION("Ingenic JZ4770 USB PHY driver");

MODULE_DESCRIPTION("Ingenic SoCs USB PHY driver");

MODULE_LICENSE("GPL");

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