From mboxrd@z Thu Jan 1 00:00:00 1970 From: kmpark@infradead.org (Kyungmin Park) Date: Wed, 22 Jun 2011 13:18:49 +0900 Subject: [RFC][PATCH 4/5] ARM: S5P64x0: Adding OTG PHY control code In-Reply-To: <1308639827-2121-5-git-send-email-p.paneri@samsung.com> References: <1308639827-2121-1-git-send-email-p.paneri@samsung.com> <1308639827-2121-5-git-send-email-p.paneri@samsung.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jun 21, 2011 at 4:03 PM, wrote: > From: Praveen Paneri > > A generic method to initialize and exit OTG PHY which can be > used for all the samsung SoCs. > OTG platdata structure added in platform to pass required > platform specific functions and data to the driver. > > Signed-off-by: Praveen Paneri > --- > ?arch/arm/mach-s5p64x0/Makefile ? ? ? ? ? | ? ?1 + > ?arch/arm/mach-s5p64x0/include/mach/map.h | ? ?4 + > ?arch/arm/mach-s5p64x0/setup-otg-phy.c ? ?| ? 89 ++++++++++++++++++++++++++++++ > ?arch/arm/plat-s5p/include/plat/otg.h ? ? | ? 29 ++++++++++ > ?4 files changed, 123 insertions(+), 0 deletions(-) > ?create mode 100644 arch/arm/mach-s5p64x0/setup-otg-phy.c > ?create mode 100644 arch/arm/plat-s5p/include/plat/otg.h > > diff --git a/arch/arm/mach-s5p64x0/Makefile b/arch/arm/mach-s5p64x0/Makefile > index ae6bf6f..611fb3a 100644 > --- a/arch/arm/mach-s5p64x0/Makefile > +++ b/arch/arm/mach-s5p64x0/Makefile > @@ -28,3 +28,4 @@ obj-y ? ? ? ? ? ? ? ? ? ? ? ? += dev-audio.o > ?obj-$(CONFIG_S3C64XX_DEV_SPI) ?+= dev-spi.o > > ?obj-$(CONFIG_S5P64X0_SETUP_I2C1) ? ? ? += setup-i2c1.o > +obj-$(CONFIG_S3C_DEV_DWC_OTG) ?+= setup-otg-phy.o > diff --git a/arch/arm/mach-s5p64x0/include/mach/map.h b/arch/arm/mach-s5p64x0/include/mach/map.h > index 95c9125..717c279 100644 > --- a/arch/arm/mach-s5p64x0/include/mach/map.h > +++ b/arch/arm/mach-s5p64x0/include/mach/map.h > @@ -44,6 +44,8 @@ > ?#define S5P64X0_PA_SPI1 ? ? ? ? ? ? ? ?0xEC500000 > > ?#define S5P64X0_PA_HSOTG ? ? ? 0xED100000 > +#define S5P64X0_PA_USB_HSPHY ? 0xED200000 > +#define S5P64X0_VA_USB_HSPHY ? S3C_ADDR_CPU(0x00100000) > > ?#define S5P64X0_PA_HSMMC(x) ? ?(0xED800000 + ((x) * 0x100000)) > > @@ -71,6 +73,8 @@ > ?#define S5P_PA_TIMER ? ? ? ? ? S5P64X0_PA_TIMER > > ?#define SAMSUNG_PA_ADC ? ? ? ? S5P64X0_PA_ADC > +#define S3C_PA_USB_HSOTG ? ? ? S5P64X0_PA_HSOTG > +#define S3C_VA_USB_HSPHY ? ? ? ?S5P64X0_VA_USB_HSPHY > > ?/* UART */ > > diff --git a/arch/arm/mach-s5p64x0/setup-otg-phy.c b/arch/arm/mach-s5p64x0/setup-otg-phy.c > new file mode 100644 > index 0000000..c351554 > --- /dev/null > +++ b/arch/arm/mach-s5p64x0/setup-otg-phy.c > @@ -0,0 +1,89 @@ > +/* > + * Copyright (C) 2011 Samsung Electronics Co.Ltd > + * Author: Praveen Paneri > + * based on arch/arm/mach-exynos4/setup-usb-phy.c > + * written by Joonyoung Shim > + * > + * ?This program is free software; you can redistribute ?it and/or modify it > + * ?under ?the terms of ?the GNU General ?Public License as published by the > + * ?Free Software Foundation; ?either version 2 of the ?License, or (at your > + * ?option) any later version. > + * > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +struct clk *otg_clk; > +static int s5p64x0_otg_phy_init(struct platform_device *pdev) > +{ > + ? ? ? int err; > + > + ? ? ? otg_clk = clk_get(&pdev->dev, "otg"); > + ? ? ? if (IS_ERR(otg_clk)) { > + ? ? ? ? ? ? ? dev_err(&pdev->dev, "Failed to get otg clock\n"); > + ? ? ? ? ? ? ? return PTR_ERR(otg_clk); > + ? ? ? } > + > + ? ? ? err = clk_enable(otg_clk); > + ? ? ? if (err) { > + ? ? ? ? ? ? ? clk_put(otg_clk); > + ? ? ? ? ? ? ? return err; > + ? ? ? } > + > + ? ? ? if (gpio_is_valid(S5P6440_GPN(1))) { > + ? ? ? ? ? ? ? err = gpio_request(S5P6440_GPN(1), "GPN"); > + ? ? ? ? ? ? ? if (err) > + ? ? ? ? ? ? ? ? ? ? ? printk(KERN_ERR "failed to request GPN1\n"); > + ? ? ? ? ? ? ? gpio_direction_output(S5P6440_GPN(1), 1); > + ? ? ? } What's the GPN(1)? I think it's board specific pins. so please replace it at board file. > + > + ? ? ? writel(readl(S5P64X0_OTHERS)&~S5P64X0_OTHERS_USB_SIG_MASK, > + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? S5P64X0_OTHERS); > + ? ? ? writel(0x0, S3C_PHYPWR); ? ? ? ? /* Power up */ > + ? ? ? writel(S3C_PHYCLK_CLKSEL_12M, S3C_PHYCLK); > + ? ? ? writel(S3C_RSTCON_PHY, S3C_RSTCON); > + > + ? ? ? udelay(50); > + ? ? ? writel(0x0, S3C_RSTCON); > + ? ? ? udelay(50); > + > + ? ? ? return 0; > +} > + > +static int s5p64x0_otg_phy_exit(struct platform_device *pdev) > +{ > + ? ? ? writel(readl(S3C_PHYPWR)|(0x1F<<1), S3C_PHYPWR); > + ? ? ? writel(readl(S5P64X0_OTHERS)&~S5P64X0_OTHERS_USB_SIG_MASK, > + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? S5P64X0_OTHERS); > + > + ? ? ? gpio_free(S5P6440_GPN(1)); ditto > + > + ? ? ? clk_disable(otg_clk); > + ? ? ? clk_put(otg_clk); > + > + ? ? ? return 0; > +} > + > +int s5p_usb_phy_init(struct platform_device *pdev, int type) > +{ > + ? ? ? if (type == S5P_USB_PHY_DEVICE) > + ? ? ? ? ? ? ? return s5p64x0_otg_phy_init(pdev); > + > + ? ? ? return -EINVAL; > +} > + > +int s5p_usb_phy_exit(struct platform_device *pdev, int type) > +{ > + ? ? ? if (type == S5P_USB_PHY_DEVICE) > + ? ? ? ? ? ? ? return s5p64x0_otg_phy_exit(pdev); > + > + ? ? ? return -EINVAL; > +} > diff --git a/arch/arm/plat-s5p/include/plat/otg.h b/arch/arm/plat-s5p/include/plat/otg.h > new file mode 100644 > index 0000000..3111dcc > --- /dev/null > +++ b/arch/arm/plat-s5p/include/plat/otg.h > @@ -0,0 +1,29 @@ > +/* > + * Copyright (C) 2011 Samsung Electronics Co.Ltd > + * Author: Praveen Paneri > + * based on arch/arm/plat-s5p/include/plat/usb-phy.h > + * written by Joonyoung Shim > + * > + * This program is free software; you can redistribute ?it and/or modify it > + * under ?the terms of ?the GNU General ?Public License as published by the > + * Free Software Foundation; ?either version 2 of the ?License, or (at your > + * option) any later version. > + */ > + > +#ifndef __PLAT_S5P_OTG_H > +#define __PLAT_S5P_OTG_H > + > +struct s5p_otg_platdata { > + ? ? ? int (*phy_init)(struct platform_device *pdev, int type); > + ? ? ? int (*phy_exit)(struct platform_device *pdev, int type); > + ? ? ? u32 dev_rx_fifo_size; > + ? ? ? u32 dev_nptx_fifo_size; > + ? ? ? u32 host_rx_fifo_size; > + ? ? ? u32 host_nptx_fifo_size; > + ? ? ? u32 host_ch_num; > + > +}; > + > +extern void s5p_otg_set_platdata(struct s5p_otg_platdata *pd); > + > +#endif /* __PLAT_S5P_OTG_H */ > -- > 1.7.0.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in > the body of a message to majordomo at vger.kernel.org > More majordomo info at ?http://vger.kernel.org/majordomo-info.html >