RE: [PATCH v3 4/5] ARM: S3C64XX: Enabling samsung-usbphy driver

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Hi Praveen,

> -----Original Message-----
> From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb-
> owner@xxxxxxxxxxxxxxx] On Behalf Of Praveen Paneri
> Sent: Wednesday, August 08, 2012 4:41 PM
> To: linux-usb@xxxxxxxxxxxxxxx
> Cc: devicetree-discuss@xxxxxxxxxxxxxxxx; linux-arm-
> kernel@xxxxxxxxxxxxxxxxxxx; linux-samsung-soc@xxxxxxxxxxxxxxx;
> kgene.kim@xxxxxxxxxxx; balbi@xxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx;
> thomas.abraham@xxxxxxxxxx; ben-linux@xxxxxxxxx;
> broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx; l.majewski@xxxxxxxxxxx;
> kyungmin.park@xxxxxxxxxxx; grant.likely@xxxxxxxxxxxx; heiko@xxxxxxxxx
> Subject: [PATCH v3 4/5] ARM: S3C64XX: Enabling samsung-usbphy driver
> 
> Adding platform device for samsung-usbphy driver. Enabling it for
> s3c64xx based machines using s3c-hsotg.
> 
> Signed-off-by: Praveen Paneri <p.paneri@xxxxxxxxxxx>
> ---
>  arch/arm/mach-s3c64xx/include/mach/map.h     |    2 +
>  arch/arm/mach-s3c64xx/mach-crag6410.c        |    4 +++
>  arch/arm/mach-s3c64xx/mach-smartq.c          |    5 ++++
>  arch/arm/mach-s3c64xx/mach-smdk6410.c        |    4 +++
>  arch/arm/mach-s3c64xx/setup-usb-phy.c        |   14 +++++++++++
>  arch/arm/plat-samsung/devs.c                 |   33
++++++++++++++++++++++++++
>  arch/arm/plat-samsung/include/plat/devs.h    |    1 +
>  arch/arm/plat-samsung/include/plat/usb-phy.h |    1 +
>  8 files changed, 64 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-s3c64xx/include/mach/map.h b/arch/arm/mach-
> s3c64xx/include/mach/map.h
> index 8e2097b..dc482bb 100644
> --- a/arch/arm/mach-s3c64xx/include/mach/map.h
> +++ b/arch/arm/mach-s3c64xx/include/mach/map.h
> @@ -65,6 +65,7 @@
> 
>  #define S3C64XX_PA_NAND		(0x70200000)
>  #define S3C64XX_PA_FB		(0x77100000)
> +#define S3C64XX_PA_USB_HSPHY	(0x7C100000)
>  #define S3C64XX_PA_USB_HSOTG	(0x7C000000)
>  #define S3C64XX_PA_WATCHDOG	(0x7E004000)
>  #define S3C64XX_PA_RTC		(0x7E005000)
> @@ -113,6 +114,7 @@
>  #define S3C_PA_FB		S3C64XX_PA_FB
>  #define S3C_PA_USBHOST		S3C64XX_PA_USBHOST
>  #define S3C_PA_USB_HSOTG	S3C64XX_PA_USB_HSOTG
> +#define S3C_PA_USB_PHY		S3C64XX_PA_USB_HSPHY
>  #define S3C_PA_RTC		S3C64XX_PA_RTC
>  #define S3C_PA_WDT		S3C64XX_PA_WATCHDOG
>  #define S3C_PA_SPI0		S3C64XX_PA_SPI0
> diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-
> s3c64xx/mach-crag6410.c
> index b0f5baf..fa02e2f 100644
> --- a/arch/arm/mach-s3c64xx/mach-crag6410.c
> +++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
> @@ -31,6 +31,7 @@
>  #include <linux/spi/spi.h>
> 
>  #include <linux/i2c/pca953x.h>
> +#include <linux/platform_data/samsung-usbphy.h>
> 
>  #include <video/platform_lcd.h>
> 
> @@ -336,6 +337,7 @@ static struct platform_device wallvdd_device = {
>  };
> 
>  static struct platform_device *crag6410_devices[] __initdata = {
> +	&samsung_device_usbphy,
>  	&s3c_device_hsmmc0,
>  	&s3c_device_hsmmc2,
>  	&s3c_device_i2c0,
> @@ -765,6 +767,7 @@ static const struct gpio_led_platform_data
> gpio_leds_pdata = {
>  	.num_leds = ARRAY_SIZE(gpio_leds),
>  };
> 
> +static struct samsung_usbphy_data crag6410_usbphy_pdata;

Why don't you use __initdata for this structure? It will be duplicated
in s3c_set_platdata() and we don't need it in memory after booting.
I think you can even initialize it here (with s5p_usb_phy_pmu_isolation).

> 
>  static void __init crag6410_machine_init(void)
>  {
> @@ -790,6 +793,7 @@ static void __init crag6410_machine_init(void)
>  	s3c_i2c0_set_platdata(&i2c0_pdata);
>  	s3c_i2c1_set_platdata(&i2c1_pdata);
>  	s3c_fb_set_platdata(&crag6410_lcd_pdata);
> +	samsung_usbphy_set_pdata(&crag6410_usbphy_pdata);
> 
>  	i2c_register_board_info(0, i2c_devs0, ARRAY_SIZE(i2c_devs0));
>  	i2c_register_board_info(1, i2c_devs1, ARRAY_SIZE(i2c_devs1));
> diff --git a/arch/arm/mach-s3c64xx/mach-smartq.c b/arch/arm/mach-
> s3c64xx/mach-smartq.c
> index 7400da1..e0c4df8 100644
> --- a/arch/arm/mach-s3c64xx/mach-smartq.c
> +++ b/arch/arm/mach-s3c64xx/mach-smartq.c
> @@ -18,6 +18,7 @@
>  #include <linux/serial_core.h>
>  #include <linux/spi/spi_gpio.h>
>  #include <linux/usb/gpio_vbus.h>
> +#include <linux/platform_data/samsung-usbphy.h>
> 
>  #include <asm/mach-types.h>
>  #include <asm/mach/map.h>
> @@ -234,6 +235,7 @@ static struct i2c_board_info smartq_i2c_devs[]
> __initdata = {
>  };
> 
>  static struct platform_device *smartq_devices[] __initdata = {
> +	&samsung_device_usbphy,
>  	&s3c_device_hsmmc1,	/* Init iNAND first, ... */
>  	&s3c_device_hsmmc0,	/* ... then the external SD card */
>  	&s3c_device_hsmmc2,
> @@ -380,9 +382,12 @@ void __init smartq_map_io(void)
>  	smartq_lcd_mode_set();
>  }
> 
> +static struct samsung_usbphy_data smartq_usbphy_pdata;

Same here

> +
>  void __init smartq_machine_init(void)
>  {
>  	s3c_i2c0_set_platdata(NULL);
> +	samsung_usbphy_set_pdata(&smartq_usbphy_pdata);
>  	s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
>  	s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
>  	s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
> diff --git a/arch/arm/mach-s3c64xx/mach-smdk6410.c b/arch/arm/mach-
> s3c64xx/mach-smdk6410.c
> index cbdc91b..8d40511 100644
> --- a/arch/arm/mach-s3c64xx/mach-smdk6410.c
> +++ b/arch/arm/mach-s3c64xx/mach-smdk6410.c
> @@ -30,6 +30,7 @@
>  #include <linux/regulator/fixed.h>
>  #include <linux/regulator/machine.h>
>  #include <linux/pwm_backlight.h>
> +#include <linux/platform_data/samsung-usbphy.h>
> 
>  #ifdef CONFIG_SMDK6410_WM1190_EV1
>  #include <linux/mfd/wm8350/core.h>
> @@ -263,6 +264,7 @@ static struct samsung_keypad_platdata
> smdk6410_keypad_data __initdata = {
>  static struct map_desc smdk6410_iodesc[] = {};
> 
>  static struct platform_device *smdk6410_devices[] __initdata = {
> +	&samsung_device_usbphy,
>  #ifdef CONFIG_SMDK6410_SD_CH0
>  	&s3c_device_hsmmc0,
>  #endif
> @@ -626,6 +628,7 @@ static struct platform_pwm_backlight_data
> smdk6410_bl_data = {
>  	.pwm_id = 1,
>  };
> 
> +static struct samsung_usbphy_data smdk6410_usbphy_pdata;

Same here

> 
>  static void __init smdk6410_map_io(void)
>  {
> @@ -655,6 +658,7 @@ static void __init smdk6410_machine_init(void)
>  	s3c_i2c0_set_platdata(NULL);
>  	s3c_i2c1_set_platdata(NULL);
>  	s3c_fb_set_platdata(&smdk6410_lcd_pdata);
> +	samsung_usbphy_set_pdata(&smdk6410_usbphy_pdata);
> 
>  	samsung_keypad_set_platdata(&smdk6410_keypad_data);
> 
> diff --git a/arch/arm/mach-s3c64xx/setup-usb-phy.c b/arch/arm/mach-
> s3c64xx/setup-usb-phy.c
> index 7a09553..3aee778 100644
> --- a/arch/arm/mach-s3c64xx/setup-usb-phy.c
> +++ b/arch/arm/mach-s3c64xx/setup-usb-phy.c
> @@ -9,3 +9,17 @@
>   *
>   */
> 
> +#include <linux/io.h>
> +#include <mach/map.h>
> +#include <mach/regs-sys.h>
> +
> +void s5p_usb_phy_pmu_isolation(int on)
> +{
> +	if (on) {
> +		writel(readl(S3C64XX_OTHERS) & ~S3C64XX_OTHERS_USBMASK,
> +			S3C64XX_OTHERS);
> +	} else {
> +		writel(readl(S3C64XX_OTHERS) | S3C64XX_OTHERS_USBMASK,
> +			S3C64XX_OTHERS);
> +	}
> +}
> diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c
> index 74e31ce..a094143 100644
> --- a/arch/arm/plat-samsung/devs.c
> +++ b/arch/arm/plat-samsung/devs.c
> @@ -31,6 +31,7 @@
>  #include <linux/ioport.h>
>  #include <linux/platform_data/s3c-hsudc.h>
>  #include <linux/platform_data/s3c-hsotg.h>
> +#include <linux/platform_data/samsung-usbphy.h>
> 
>  #include <asm/irq.h>
>  #include <asm/pmu.h>
> @@ -1343,6 +1344,35 @@ struct platform_device s5p_device_mixer = {
> 
>  /* USB */
> 
> +#ifdef CONFIG_S3C_DEV_USB_HSOTG
> +/* USB PHY*/
> +static struct resource samsung_usbphy_resource[] = {
> +	[0] = {
> +		.start = S3C_PA_USB_PHY,
> +		.end   = S3C_PA_USB_PHY + SZ_16 - 1,
> +		.flags = IORESOURCE_MEM,
> +	},
> +};
> +
> +struct platform_device samsung_device_usbphy = {
> +	.name		= "s3c64xx-usbphy",
> +	.id		= -1,
> +	.num_resources	= ARRAY_SIZE(samsung_usbphy_resource),
> +	.resource	= samsung_usbphy_resource,
> +};
> +
> +void __init samsung_usbphy_set_pdata(struct samsung_usbphy_data *pd)
> +{
> +	struct samsung_usbphy_data *npd;
> +
> +	npd = s3c_set_platdata(pd, sizeof(struct samsung_usbphy_data),
> +			&samsung_device_usbphy);
> +
> +	if (!npd->pmu_isolation)
> +		npd->pmu_isolation = s5p_usb_phy_pmu_isolation;
> +}
> +#endif
> +
>  #ifdef CONFIG_S3C_DEV_USB_HOST
>  static struct resource s3c_usb_resource[] = {
>  	[0] = DEFINE_RES_MEM(S3C_PA_USBHOST, SZ_256),
> @@ -1449,6 +1479,8 @@ struct platform_device s3c_device_usb_hsotg = {
>  	},
>  };
> 
> +#ifndef CONFIG_ARCH_S3C64XX
> +/* TODO: To be removed later. Currently only S3C64XX is platform data
> free */
>  void __init s3c_hsotg_set_platdata(struct s3c_hsotg_plat *pd)
>  {
>  	struct s3c_hsotg_plat *npd;
> @@ -1461,6 +1493,7 @@ void __init s3c_hsotg_set_platdata(struct
> s3c_hsotg_plat *pd)
>  	if (!npd->phy_exit)
>  		npd->phy_exit = s5p_usb_phy_exit;
>  }
> +#endif
>  #endif /* CONFIG_S3C_DEV_USB_HSOTG */
> 
>  /* USB High Spped 2.0 Device (Gadget) */
> diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-
> samsung/include/plat/devs.h
> index 5da4b4f..3849c88 100644
> --- a/arch/arm/plat-samsung/include/plat/devs.h
> +++ b/arch/arm/plat-samsung/include/plat/devs.h
> @@ -138,6 +138,7 @@ extern struct platform_device exynos_device_drm;
>  extern struct platform_device samsung_asoc_dma;
>  extern struct platform_device samsung_asoc_idma;
>  extern struct platform_device samsung_device_keypad;
> +extern struct platform_device samsung_device_usbphy;
> 
>  /* s3c2440 specific devices */
> 
> diff --git a/arch/arm/plat-samsung/include/plat/usb-phy.h b/arch/arm/plat-
> samsung/include/plat/usb-phy.h
> index 959bcdb..165ffe7 100644
> --- a/arch/arm/plat-samsung/include/plat/usb-phy.h
> +++ b/arch/arm/plat-samsung/include/plat/usb-phy.h
> @@ -18,5 +18,6 @@ enum s5p_usb_phy_type {
> 
>  extern int s5p_usb_phy_init(struct platform_device *pdev, int type);
>  extern int s5p_usb_phy_exit(struct platform_device *pdev, int type);
> +extern void s5p_usb_phy_pmu_isolation(int on);
> 
>  #endif /* __PLAT_SAMSUNG_USB_PHY_H */
> --
> 1.7.1
> 
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