Commit 07f201d8 authored by Mian Yousaf Kaukab's avatar Mian Yousaf Kaukab Committed by Linus Walleij
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mach-ux500: add platform data for musb 



USB resources and DMA40 configurations are dynamically with
the data provided in ux500_add_usb() call. Though only DMA40
configurations differ between U8500 and U5500 (USB resource
are common between them).

Signed-off-by: default avatarMian Yousaf Kaukab <mian-yousaf.kaukab@linaro.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 7863513e

arch/arm/mach-ux500/Makefile

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@@ -3,7 +3,7 @@ 
#



obj-y				:= clock.o cpu.o devices.o devices-common.o \

				   id.o

				   id.o usb.o

obj-$(CONFIG_UX500_SOC_DB5500)	+= cpu-db5500.o dma-db5500.o

obj-$(CONFIG_UX500_SOC_DB8500)	+= cpu-db8500.o devices-db8500.o prcmu.o

obj-$(CONFIG_MACH_U8500)	+= board-mop500.o board-mop500-sdi.o \

arch/arm/mach-ux500/include/mach/usb.h

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/*

 * Copyright (C) ST-Ericsson SA 2011

 *

 * Author: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>

 * License terms: GNU General Public License (GPL) version 2

 */

#ifndef __ASM_ARCH_USB_H

#define __ASM_ARCH_USB_H



#include <linux/dmaengine.h>



#define UX500_MUSB_DMA_NUM_RX_CHANNELS 8

#define UX500_MUSB_DMA_NUM_TX_CHANNELS 8



struct ux500_musb_board_data {

	void	**dma_rx_param_array;

	void	**dma_tx_param_array;

	u32	num_rx_channels;

	u32	num_tx_channels;

	bool (*dma_filter)(struct dma_chan *chan, void *filter_param);

};



void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg,

	int *dma_tx_cfg);

#endif

arch/arm/mach-ux500/usb.c

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/*

 * Copyright (C) ST-Ericsson SA 2011

 *

 * Author: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>

 * License terms: GNU General Public License (GPL) version 2

 */

#include <linux/platform_device.h>

#include <linux/usb/musb.h>

#include <plat/ste_dma40.h>

#include <mach/hardware.h>

#include <mach/usb.h>



#define MUSB_DMA40_RX_CH { \

		.mode = STEDMA40_MODE_LOGICAL, \

		.dir = STEDMA40_PERIPH_TO_MEM, \

		.dst_dev_type = STEDMA40_DEV_DST_MEMORY, \

		.src_info.data_width = STEDMA40_WORD_WIDTH, \

		.dst_info.data_width = STEDMA40_WORD_WIDTH, \

		.src_info.psize = STEDMA40_PSIZE_LOG_16, \

		.dst_info.psize = STEDMA40_PSIZE_LOG_16, \

	}



#define MUSB_DMA40_TX_CH { \

		.mode = STEDMA40_MODE_LOGICAL, \

		.dir = STEDMA40_MEM_TO_PERIPH, \

		.src_dev_type = STEDMA40_DEV_SRC_MEMORY, \

		.src_info.data_width = STEDMA40_WORD_WIDTH, \

		.dst_info.data_width = STEDMA40_WORD_WIDTH, \

		.src_info.psize = STEDMA40_PSIZE_LOG_16, \

		.dst_info.psize = STEDMA40_PSIZE_LOG_16, \

	}



static struct stedma40_chan_cfg musb_dma_rx_ch[UX500_MUSB_DMA_NUM_RX_CHANNELS]

	= {

	MUSB_DMA40_RX_CH,

	MUSB_DMA40_RX_CH,

	MUSB_DMA40_RX_CH,

	MUSB_DMA40_RX_CH,

	MUSB_DMA40_RX_CH,

	MUSB_DMA40_RX_CH,

	MUSB_DMA40_RX_CH,

	MUSB_DMA40_RX_CH

};



static struct stedma40_chan_cfg musb_dma_tx_ch[UX500_MUSB_DMA_NUM_TX_CHANNELS]

	= {

	MUSB_DMA40_TX_CH,

	MUSB_DMA40_TX_CH,

	MUSB_DMA40_TX_CH,

	MUSB_DMA40_TX_CH,

	MUSB_DMA40_TX_CH,

	MUSB_DMA40_TX_CH,

	MUSB_DMA40_TX_CH,

	MUSB_DMA40_TX_CH,

};



static void *ux500_dma_rx_param_array[UX500_MUSB_DMA_NUM_RX_CHANNELS] = {

	&musb_dma_rx_ch[0],

	&musb_dma_rx_ch[1],

	&musb_dma_rx_ch[2],

	&musb_dma_rx_ch[3],

	&musb_dma_rx_ch[4],

	&musb_dma_rx_ch[5],

	&musb_dma_rx_ch[6],

	&musb_dma_rx_ch[7]

};



static void *ux500_dma_tx_param_array[UX500_MUSB_DMA_NUM_TX_CHANNELS] = {

	&musb_dma_tx_ch[0],

	&musb_dma_tx_ch[1],

	&musb_dma_tx_ch[2],

	&musb_dma_tx_ch[3],

	&musb_dma_tx_ch[4],

	&musb_dma_tx_ch[5],

	&musb_dma_tx_ch[6],

	&musb_dma_tx_ch[7]

};



static struct ux500_musb_board_data musb_board_data = {

	.dma_rx_param_array = ux500_dma_rx_param_array,

	.dma_tx_param_array = ux500_dma_tx_param_array,

	.num_rx_channels = UX500_MUSB_DMA_NUM_RX_CHANNELS,

	.num_tx_channels = UX500_MUSB_DMA_NUM_TX_CHANNELS,

	.dma_filter = stedma40_filter,

};



static u64 ux500_musb_dmamask = DMA_BIT_MASK(32);



static struct musb_hdrc_config musb_hdrc_config = {

	.multipoint	= true,

	.dyn_fifo	= true,

	.num_eps	= 16,

	.ram_bits	= 16,

};



static struct musb_hdrc_platform_data musb_platform_data = {

#if defined(CONFIG_USB_MUSB_OTG)

	.mode = MUSB_OTG,

#elif defined(CONFIG_USB_MUSB_PERIPHERAL)

	.mode = MUSB_PERIPHERAL,

#else /* defined(CONFIG_USB_MUSB_HOST) */

	.mode = MUSB_HOST,

#endif

	.config = &musb_hdrc_config,

	.board_data = &musb_board_data,

};



static struct resource usb_resources[] = {

	[0] = {

		.name	= "usb-mem",

		.flags	=  IORESOURCE_MEM,

	},



	[1] = {

		.name   = "mc", /* hard-coded in musb */

		.flags	= IORESOURCE_IRQ,

	},

};



struct platform_device ux500_musb_device = {

	.name = "musb-ux500",

	.id = 0,

	.dev = {

		.platform_data = &musb_platform_data,

		.dma_mask = &ux500_musb_dmamask,

		.coherent_dma_mask = DMA_BIT_MASK(32),

	},

	.num_resources = ARRAY_SIZE(usb_resources),

	.resource = usb_resources,

};



static inline void ux500_usb_dma_update_rx_ch_config(int *src_dev_type)

{

	u32 idx;



	for (idx = 0; idx < UX500_MUSB_DMA_NUM_RX_CHANNELS; idx++)

		musb_dma_rx_ch[idx].src_dev_type = src_dev_type[idx];

}



static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type)

{

	u32 idx;



	for (idx = 0; idx < UX500_MUSB_DMA_NUM_TX_CHANNELS; idx++)

		musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx];

}



void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg,

	int *dma_tx_cfg)

{

	ux500_musb_device.resource[0].start = base;

	ux500_musb_device.resource[0].end = base + SZ_64K - 1;

	ux500_musb_device.resource[1].start = irq;

	ux500_musb_device.resource[1].end = irq;



	ux500_usb_dma_update_rx_ch_config(dma_rx_cfg);

	ux500_usb_dma_update_tx_ch_config(dma_tx_cfg);



	platform_device_register(&ux500_musb_device);

}

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