Message-ID: <53173624.2090108@ti.com>
Date:	Wed, 5 Mar 2014 20:05:16 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Kamil Debski <k.debski@...sung.com>,
	<linux-kernel@...r.kernel.org>,
	<linux-samsung-soc@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	<devicetree@...r.kernel.org>
CC:	<kyungmin.park@...sung.com>, <t.figa@...sung.com>,
	<s.nawrocki@...sung.com>, <m.szyprowski@...sung.com>,
	<gautam.vivek@...sung.com>, <mat.krawczuk@...il.com>,
	<yulgon.kim@...sung.com>, <p.paneri@...sung.com>,
	<av.tikhomirov@...sung.com>, <jg1.han@...sung.com>,
	<galak@...eaurora.org>, <matt.porter@...aro.org>,
	<tjakobi@...h.uni-bielefeld.de>, <stern@...land.harvard.edu>,
	<sander@...ilis.net>
Subject: Re: [PATCH v8 4/4] phy: Add Exynos 5250 support to the Exynos USB
 2.0 PHY driver

Hi,

On Wednesday 05 March 2014 07:48 PM, Kamil Debski wrote:
> Add support for Exynos 5250. This driver is to replace the old
> USB 2.0 PHY driver.

Pls fix this error too..

Applying: phy: Add Exynos 5250 support to the Exynos USB 2.0 PHY driver
/home/kishon/repos/linux-phy/.git/rebase-apply/patch:462: new blank line 
at EOF.
+
warning: 1 line adds whitespace errors.

Thanks
Kishon
>
> Signed-off-by: Kamil Debski <k.debski@...sung.com>
> ---
>   .../devicetree/bindings/phy/samsung-phy.txt        |    1 +
>   drivers/phy/Kconfig                                |   11 +
>   drivers/phy/Makefile                               |    1 +
>   drivers/phy/phy-exynos5250-usb2.c                  |  405 ++++++++++++++++++++
>   drivers/phy/phy-samsung-usb2.c                     |    6 +
>   drivers/phy/phy-samsung-usb2.h                     |    1 +
>   6 files changed, 425 insertions(+)
>   create mode 100644 drivers/phy/phy-exynos5250-usb2.c
>
> diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt b/Documentation/devicetree/bindings/phy/samsung-phy.txt
> index bf955ab..28f9edb 100644
> --- a/Documentation/devicetree/bindings/phy/samsung-phy.txt
> +++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt
> @@ -28,6 +28,7 @@ Required properties:
>   - compatible : should be one of the listed compatibles:
>   	- "samsung,exynos4210-usb2-phy"
>   	- "samsung,exynos4x12-usb2-phy"
> +	- "samsung,exynos5250-usb2-phy"
>   - reg : a list of registers used by phy driver
>   	- first and obligatory is the location of phy modules registers
>   - samsung,sysreg-phandle - handle to syscon used to control the system registers
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index fc5a44a..c206e25 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -125,4 +125,15 @@ config PHY_EXYNOS4X12_USB2
>   	  Samsung USB 2.0 PHY driver is enabled and means that support for this
>   	  particular SoC is compiled in the driver. In case of Exynos 4x12 four
>   	  phys are available - device, host, HSIC0 and HSIC1.
> +
> +config PHY_EXYNOS5250_USB2
> +	bool "Support for Exynos 5250"
> +	depends on PHY_SAMSUNG_USB2
> +	depends on SOC_EXYNOS5250
> +	help
> +	  Enable USB PHY support for Exynos 5250. This option requires that
> +	  Samsung USB 2.0 PHY driver is enabled and means that support for this
> +	  particular SoC is compiled in the driver. In case of Exynos 5250 four
> +	  phys are available - device, host, HSIC0 and HSIC.
> +
>   endmenu
> diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
> index 0ea36ff..f76c239 100644
> --- a/drivers/phy/Makefile
> +++ b/drivers/phy/Makefile
> @@ -14,3 +14,4 @@ obj-$(CONFIG_PHY_SUN4I_USB)		+= phy-sun4i-usb.o
>   obj-$(CONFIG_PHY_SAMSUNG_USB2)		+= phy-samsung-usb2.o
>   obj-$(CONFIG_PHY_EXYNOS4210_USB2)	+= phy-exynos4210-usb2.o
>   obj-$(CONFIG_PHY_EXYNOS4X12_USB2)	+= phy-exynos4x12-usb2.o
> +obj-$(CONFIG_PHY_EXYNOS5250_USB2)	+= phy-exynos5250-usb2.o
> diff --git a/drivers/phy/phy-exynos5250-usb2.c b/drivers/phy/phy-exynos5250-usb2.c
> new file mode 100644
> index 0000000..877994e
> --- /dev/null
> +++ b/drivers/phy/phy-exynos5250-usb2.c
> @@ -0,0 +1,405 @@
> +/*
> + * Samsung SoC USB 1.1/2.0 PHY driver - Exynos 5250 support
> + *
> + * Copyright (C) 2013 Samsung Electronics Co., Ltd.
> + * Author: Kamil Debski <k.debski@...sung.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/io.h>
> +#include <linux/phy/phy.h>
> +#include <linux/regmap.h>
> +#include "phy-samsung-usb2.h"
> +
> +/* Exynos USB PHY registers */
> +#define EXYNOS_5250_REFCLKSEL_CRYSTAL	0x0
> +#define EXYNOS_5250_REFCLKSEL_XO	0x1
> +#define EXYNOS_5250_REFCLKSEL_CLKCORE	0x2
> +
> +#define EXYNOS_5250_FSEL_9MHZ6		0x0
> +#define EXYNOS_5250_FSEL_10MHZ		0x1
> +#define EXYNOS_5250_FSEL_12MHZ		0x2
> +#define EXYNOS_5250_FSEL_19MHZ2		0x3
> +#define EXYNOS_5250_FSEL_20MHZ		0x4
> +#define EXYNOS_5250_FSEL_24MHZ		0x5
> +#define EXYNOS_5250_FSEL_50MHZ		0x7
> +
> +/* Normal host */
> +#define EXYNOS_5250_HOSTPHYCTRL0			0x0
> +
> +#define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL		BIT(31)
> +#define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT	19
> +#define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_MASK	\
> +		(0x3 << EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT)
> +#define EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT		16
> +#define EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK \
> +		(0x7 << EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT)
> +#define EXYNOS_5250_HOSTPHYCTRL0_TESTBURNIN		BIT(11)
> +#define EXYNOS_5250_HOSTPHYCTRL0_RETENABLE		BIT(10)
> +#define EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N		BIT(9)
> +#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_MASK		(0x3 << 7)
> +#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_DUAL		(0x0 << 7)
> +#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ID0		(0x1 << 7)
> +#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ANALOGTEST	(0x2 << 7)
> +#define EXYNOS_5250_HOSTPHYCTRL0_SIDDQ			BIT(6)
> +#define EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP		BIT(5)
> +#define EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND		BIT(4)
> +#define EXYNOS_5250_HOSTPHYCTRL0_WORDINTERFACE		BIT(3)
> +#define EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST		BIT(2)
> +#define EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST		BIT(1)
> +#define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST		BIT(0)
> +
> +/* HSIC0 & HSIC1 */
> +#define EXYNOS_5250_HSICPHYCTRL1			0x10
> +#define EXYNOS_5250_HSICPHYCTRL2			0x20
> +
> +#define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_MASK		(0x3 << 23)
> +#define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT	(0x2 << 23)
> +#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_MASK		(0x7f << 16)
> +#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12		(0x24 << 16)
> +#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_15		(0x1c << 16)
> +#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_16		(0x1a << 16)
> +#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_19_2		(0x15 << 16)
> +#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_20		(0x14 << 16)
> +#define EXYNOS_5250_HSICPHYCTRLX_SIDDQ			BIT(6)
> +#define EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP		BIT(5)
> +#define EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND		BIT(4)
> +#define EXYNOS_5250_HSICPHYCTRLX_WORDINTERFACE		BIT(3)
> +#define EXYNOS_5250_HSICPHYCTRLX_UTMISWRST		BIT(2)
> +#define EXYNOS_5250_HSICPHYCTRLX_PHYSWRST		BIT(0)
> +
> +/* EHCI control */
> +#define EXYNOS_5250_HOSTEHCICTRL			0x30
> +#define EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN		BIT(29)
> +#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR4		BIT(28)
> +#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR8		BIT(27)
> +#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR16		BIT(26)
> +#define EXYNOS_5250_HOSTEHCICTRL_AUTOPPDONOVRCUREN	BIT(25)
> +#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT	19
> +#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK	\
> +		(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
> +#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT	13
> +#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_MASK	\
> +		(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT)
> +#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL2_SHIFT	7
> +#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK	\
> +		(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
> +#define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT	1
> +#define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_MASK \
> +		(0x1 << EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT)
> +#define EXYNOS_5250_HOSTEHCICTRL_SIMULATIONMODE		BIT(0)
> +
> +/* OHCI control */
> +#define EXYNOS_5250_HOSTOHCICTRL                        0x34
> +#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT	1
> +#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_MASK \
> +		(0x3ff << EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT)
> +#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVALEN		BIT(0)
> +
> +/* USBOTG */
> +#define EXYNOS_5250_USBOTGSYS				0x38
> +#define EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET		BIT(14)
> +#define EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG		BIT(13)
> +#define EXYNOS_5250_USBOTGSYS_PHY_SW_RST		BIT(12)
> +#define EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT		9
> +#define EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK \
> +		(0x3 << EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT)
> +#define EXYNOS_5250_USBOTGSYS_ID_PULLUP			BIT(8)
> +#define EXYNOS_5250_USBOTGSYS_COMMON_ON			BIT(7)
> +#define EXYNOS_5250_USBOTGSYS_FSEL_SHIFT		4
> +#define EXYNOS_5250_USBOTGSYS_FSEL_MASK \
> +		(0x3 << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT)
> +#define EXYNOS_5250_USBOTGSYS_FORCE_SLEEP		BIT(3)
> +#define EXYNOS_5250_USBOTGSYS_OTGDISABLE		BIT(2)
> +#define EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG		BIT(1)
> +#define EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND		BIT(0)
> +
> +/* Isolation, configured in the power management unit */
> +#define EXYNOS_5250_USB_ISOL_OTG_OFFSET		0x704
> +#define EXYNOS_5250_USB_ISOL_OTG		BIT(0)
> +#define EXYNOS_5250_USB_ISOL_HOST_OFFSET	0x708
> +#define EXYNOS_5250_USB_ISOL_HOST		BIT(0)
> +
> +/* Mode swtich register */
> +#define EXYNOS_5250_MODE_SWITCH_OFFSET		0x230
> +#define EXYNOS_5250_MODE_SWITCH_MASK		1
> +#define EXYNOS_5250_MODE_SWITCH_DEVICE		0
> +#define EXYNOS_5250_MODE_SWITCH_HOST		1
> +
> +enum exynos4x12_phy_id {
> +	EXYNOS5250_DEVICE,
> +	EXYNOS5250_HOST,
> +	EXYNOS5250_HSIC0,
> +	EXYNOS5250_HSIC1,
> +	EXYNOS5250_NUM_PHYS,
> +};
> +
> +/*
> + * exynos5250_rate_to_clk() converts the supplied clock rate to the value that
> + * can be written to the phy register.
> + */
> +static int exynos5250_rate_to_clk(unsigned long rate, u32 *reg)
> +{
> +	/* EXYNOS_5250_FSEL_MASK */
> +
> +	switch (rate) {
> +	case 9600 * KHZ:
> +		*reg = EXYNOS_5250_FSEL_9MHZ6;
> +		break;
> +	case 10 * MHZ:
> +		*reg = EXYNOS_5250_FSEL_10MHZ;
> +		break;
> +	case 12 * MHZ:
> +		*reg = EXYNOS_5250_FSEL_12MHZ;
> +		break;
> +	case 19200 * KHZ:
> +		*reg = EXYNOS_5250_FSEL_19MHZ2;
> +		break;
> +	case 20 * MHZ:
> +		*reg = EXYNOS_5250_FSEL_20MHZ;
> +		break;
> +	case 24 * MHZ:
> +		*reg = EXYNOS_5250_FSEL_24MHZ;
> +		break;
> +	case 50 * MHZ:
> +		*reg = EXYNOS_5250_FSEL_50MHZ;
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static void exynos5250_isol(struct samsung_usb2_phy_instance *inst, bool on)
> +{
> +	struct samsung_usb2_phy_driver *drv = inst->drv;
> +	u32 offset;
> +	u32 mask;
> +
> +	switch (inst->cfg->id) {
> +	case EXYNOS5250_DEVICE:
> +		offset = EXYNOS_5250_USB_ISOL_OTG_OFFSET;
> +		mask = EXYNOS_5250_USB_ISOL_OTG;
> +		break;
> +	case EXYNOS5250_HOST:
> +		offset = EXYNOS_5250_USB_ISOL_HOST_OFFSET;
> +		mask = EXYNOS_5250_USB_ISOL_HOST;
> +		break;
> +	default:
> +		return;
> +	};
> +
> +	regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask);
> +}
> +
> +static int exynos5250_power_on(struct samsung_usb2_phy_instance *inst)
> +{
> +	struct samsung_usb2_phy_driver *drv = inst->drv;
> +	u32 ctrl0;
> +	u32 otg;
> +	u32 ehci;
> +	u32 ohci;
> +	u32 hsic;
> +
> +	switch (inst->cfg->id) {
> +	case EXYNOS5250_DEVICE:
> +		regmap_update_bits(drv->reg_sys,
> +				   EXYNOS_5250_MODE_SWITCH_OFFSET,
> +				   EXYNOS_5250_MODE_SWITCH_MASK,
> +				   EXYNOS_5250_MODE_SWITCH_DEVICE);
> +
> +		/* OTG configuration */
> +		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
> +		/* The clock */
> +		otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
> +		otg |= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
> +		/* Reset */
> +		otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
> +			EXYNOS_5250_USBOTGSYS_FORCE_SLEEP |
> +			EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
> +		otg |=	EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
> +			EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
> +			EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
> +			EXYNOS_5250_USBOTGSYS_OTGDISABLE;
> +		/* Ref clock */
> +		otg &=	~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
> +		otg |=  EXYNOS_5250_REFCLKSEL_CLKCORE <<
> +					EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
> +		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
> +		udelay(100);
> +		otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
> +			EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
> +			EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
> +			EXYNOS_5250_USBOTGSYS_OTGDISABLE);
> +		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
> +
> +
> +		break;
> +	case EXYNOS5250_HOST:
> +	case EXYNOS5250_HSIC0:
> +	case EXYNOS5250_HSIC1:
> +		/* Host registers configuration */
> +		ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
> +		/* The clock */
> +		ctrl0 &= ~EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK;
> +		ctrl0 |= drv->ref_reg_val <<
> +					EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT;
> +
> +		/* Reset */
> +		ctrl0 &=	~(EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST |
> +				EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL |
> +				EXYNOS_5250_HOSTPHYCTRL0_SIDDQ |
> +				EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND |
> +				EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP);
> +		ctrl0 |=	EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST |
> +				EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST |
> +				EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N;
> +		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
> +		udelay(10);
> +		ctrl0 &=	~(EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST |
> +				EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST);
> +		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
> +
> +		/* OTG configuration */
> +		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
> +		/* The clock */
> +		otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
> +		otg |= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
> +		/* Reset */
> +		otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
> +			EXYNOS_5250_USBOTGSYS_FORCE_SLEEP |
> +			EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
> +		otg |=	EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
> +			EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
> +			EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
> +			EXYNOS_5250_USBOTGSYS_OTGDISABLE;
> +		/* Ref clock */
> +		otg &=	~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
> +		otg |=  EXYNOS_5250_REFCLKSEL_CLKCORE <<
> +					EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
> +		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
> +		udelay(10);
> +		otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
> +			EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
> +			EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET);
> +
> +		/* HSIC phy configuration */
> +		hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 |
> +				EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT |
> +				EXYNOS_5250_HSICPHYCTRLX_PHYSWRST);
> +		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
> +		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
> +		udelay(10);
> +		hsic &= ~EXYNOS_5250_HSICPHYCTRLX_PHYSWRST;
> +		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
> +		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
> +		/* The following delay is necessary for the reset sequence to be
> +		 * completed */
> +		udelay(80);
> +
> +		/* Enable EHCI DMA burst */
> +		ehci = readl(drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
> +		ehci |=	EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN |
> +			EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 |
> +			EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 |
> +			EXYNOS_5250_HOSTEHCICTRL_ENAINCR16;
> +		writel(ehci, drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
> +
> +		/* OHCI settings */
> +		ohci = readl(drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);
> +		/* Following code is based on the old driver */
> +		ohci |=	0x1 << 3;
> +		writel(ohci, drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);
> +
> +		break;
> +	}
> +	inst->enabled = 1;
> +	exynos5250_isol(inst, 0);
> +
> +	return 0;
> +}
> +
> +static int exynos5250_power_off(struct samsung_usb2_phy_instance *inst)
> +{
> +	struct samsung_usb2_phy_driver *drv = inst->drv;
> +	u32 ctrl0;
> +	u32 otg;
> +	u32 hsic;
> +
> +	inst->enabled = 0;
> +	exynos5250_isol(inst, 1);
> +
> +	switch (inst->cfg->id) {
> +	case EXYNOS5250_DEVICE:
> +		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
> +		otg |= (EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
> +			EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG |
> +			EXYNOS_5250_USBOTGSYS_FORCE_SLEEP);
> +		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
> +		break;
> +	case EXYNOS5250_HOST:
> +		ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
> +		ctrl0 |= (EXYNOS_5250_HOSTPHYCTRL0_SIDDQ |
> +				EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND |
> +				EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP |
> +				EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST |
> +				EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL);
> +		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
> +		break;
> +	case EXYNOS5250_HSIC0:
> +	case EXYNOS5250_HSIC1:
> +		hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 |
> +				EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT |
> +				EXYNOS_5250_HSICPHYCTRLX_SIDDQ |
> +				EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP |
> +				EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND
> +				);
> +		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
> +		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
> +		break;
> +	}
> +
> +	return 0;
> +}
> +
> +
> +static const struct samsung_usb2_common_phy exynos5250_phys[] = {
> +	{
> +		.label		= "device",
> +		.id		= EXYNOS5250_DEVICE,
> +		.power_on	= exynos5250_power_on,
> +		.power_off	= exynos5250_power_off,
> +	},
> +	{
> +		.label		= "host",
> +		.id		= EXYNOS5250_HOST,
> +		.power_on	= exynos5250_power_on,
> +		.power_off	= exynos5250_power_off,
> +	},
> +	{
> +		.label		= "hsic0",
> +		.id		= EXYNOS5250_HSIC0,
> +		.power_on	= exynos5250_power_on,
> +		.power_off	= exynos5250_power_off,
> +	},
> +	{
> +		.label		= "hsic1",
> +		.id		= EXYNOS5250_HSIC1,
> +		.power_on	= exynos5250_power_on,
> +		.power_off	= exynos5250_power_off,
> +	},
> +	{},
> +};
> +
> +const struct samsung_usb2_phy_config exynos5250_usb2_phy_config = {
> +	.has_mode_switch	= 1,
> +	.num_phys		= EXYNOS5250_NUM_PHYS,
> +	.phys			= exynos5250_phys,
> +	.rate_to_clk		= exynos5250_rate_to_clk,
> +};
> +
> diff --git a/drivers/phy/phy-samsung-usb2.c b/drivers/phy/phy-samsung-usb2.c
> index 478f856..2abde30 100644
> --- a/drivers/phy/phy-samsung-usb2.c
> +++ b/drivers/phy/phy-samsung-usb2.c
> @@ -99,6 +99,12 @@ static const struct of_device_id samsung_usb2_phy_of_match[] = {
>   		.data = &exynos4x12_usb2_phy_config,
>   	},
>   #endif
> +#ifdef CONFIG_PHY_EXYNOS5250_USB2
> +	{
> +		.compatible = "samsung,exynos5250-usb2-phy",
> +		.data = &exynos5250_usb2_phy_config,
> +	},
> +#endif
>   	{ },
>   };
>
> diff --git a/drivers/phy/phy-samsung-usb2.h b/drivers/phy/phy-samsung-usb2.h
> index c004e90..2871fd052 100644
> --- a/drivers/phy/phy-samsung-usb2.h
> +++ b/drivers/phy/phy-samsung-usb2.h
> @@ -63,5 +63,6 @@ struct samsung_usb2_phy_config {
>
>   extern const struct samsung_usb2_phy_config exynos4210_usb2_phy_config;
>   extern const struct samsung_usb2_phy_config exynos4x12_usb2_phy_config;
> +extern const struct samsung_usb2_phy_config exynos5250_usb2_phy_config;
>   #endif
>
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists