1/*
  2 * Copyright (C) ST-Ericsson SA 2011
  3 *
  4 * Author: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
  5 * License terms: GNU General Public License (GPL) version 2
  6 */
  7#include <linux/platform_device.h>
  8#include <linux/usb/musb.h>
  9#include <linux/dma-mapping.h>
 10
 11#include <plat/ste_dma40.h>
 12#include <mach/hardware.h>
 13#include <mach/usb.h>
 14
 15#define MUSB_DMA40_RX_CH { \
 16		.mode = STEDMA40_MODE_LOGICAL, \
 17		.dir = STEDMA40_PERIPH_TO_MEM, \
 18		.dst_dev_type = STEDMA40_DEV_DST_MEMORY, \
 19		.src_info.data_width = STEDMA40_WORD_WIDTH, \
 20		.dst_info.data_width = STEDMA40_WORD_WIDTH, \
 21		.src_info.psize = STEDMA40_PSIZE_LOG_16, \
 22		.dst_info.psize = STEDMA40_PSIZE_LOG_16, \
 23	}
 24
 25#define MUSB_DMA40_TX_CH { \
 26		.mode = STEDMA40_MODE_LOGICAL, \
 27		.dir = STEDMA40_MEM_TO_PERIPH, \
 28		.src_dev_type = STEDMA40_DEV_SRC_MEMORY, \
 29		.src_info.data_width = STEDMA40_WORD_WIDTH, \
 30		.dst_info.data_width = STEDMA40_WORD_WIDTH, \
 31		.src_info.psize = STEDMA40_PSIZE_LOG_16, \
 32		.dst_info.psize = STEDMA40_PSIZE_LOG_16, \
 33	}
 34
 35static struct stedma40_chan_cfg musb_dma_rx_ch[UX500_MUSB_DMA_NUM_RX_CHANNELS]
 36	= {
 37	MUSB_DMA40_RX_CH,
 38	MUSB_DMA40_RX_CH,
 39	MUSB_DMA40_RX_CH,
 40	MUSB_DMA40_RX_CH,
 41	MUSB_DMA40_RX_CH,
 42	MUSB_DMA40_RX_CH,
 43	MUSB_DMA40_RX_CH,
 44	MUSB_DMA40_RX_CH
 45};
 46
 47static struct stedma40_chan_cfg musb_dma_tx_ch[UX500_MUSB_DMA_NUM_TX_CHANNELS]
 48	= {
 49	MUSB_DMA40_TX_CH,
 50	MUSB_DMA40_TX_CH,
 51	MUSB_DMA40_TX_CH,
 52	MUSB_DMA40_TX_CH,
 53	MUSB_DMA40_TX_CH,
 54	MUSB_DMA40_TX_CH,
 55	MUSB_DMA40_TX_CH,
 56	MUSB_DMA40_TX_CH,
 57};
 58
 59static void *ux500_dma_rx_param_array[UX500_MUSB_DMA_NUM_RX_CHANNELS] = {
 60	&musb_dma_rx_ch[0],
 61	&musb_dma_rx_ch[1],
 62	&musb_dma_rx_ch[2],
 63	&musb_dma_rx_ch[3],
 64	&musb_dma_rx_ch[4],
 65	&musb_dma_rx_ch[5],
 66	&musb_dma_rx_ch[6],
 67	&musb_dma_rx_ch[7]
 68};
 69
 70static void *ux500_dma_tx_param_array[UX500_MUSB_DMA_NUM_TX_CHANNELS] = {
 71	&musb_dma_tx_ch[0],
 72	&musb_dma_tx_ch[1],
 73	&musb_dma_tx_ch[2],
 74	&musb_dma_tx_ch[3],
 75	&musb_dma_tx_ch[4],
 76	&musb_dma_tx_ch[5],
 77	&musb_dma_tx_ch[6],
 78	&musb_dma_tx_ch[7]
 79};
 80
 81static struct ux500_musb_board_data musb_board_data = {
 82	.dma_rx_param_array = ux500_dma_rx_param_array,
 83	.dma_tx_param_array = ux500_dma_tx_param_array,
 84	.num_rx_channels = UX500_MUSB_DMA_NUM_RX_CHANNELS,
 85	.num_tx_channels = UX500_MUSB_DMA_NUM_TX_CHANNELS,
 86	.dma_filter = stedma40_filter,
 87};
 88
 89static u64 ux500_musb_dmamask = DMA_BIT_MASK(32);
 90
 91static struct musb_hdrc_config musb_hdrc_config = {
 92	.multipoint	= true,
 93	.dyn_fifo	= true,
 94	.num_eps	= 16,
 95	.ram_bits	= 16,
 96};
 97
 98static struct musb_hdrc_platform_data musb_platform_data = {
 99	.mode = MUSB_OTG,
100	.config = &musb_hdrc_config,
101	.board_data = &musb_board_data,
102};
103
104static struct resource usb_resources[] = {
105	[0] = {
106		.name	= "usb-mem",
107		.flags	=  IORESOURCE_MEM,
108	},
109
110	[1] = {
111		.name   = "mc", /* hard-coded in musb */
112		.flags	= IORESOURCE_IRQ,
113	},
114};
115
116struct platform_device ux500_musb_device = {
117	.name = "musb-ux500",
118	.id = 0,
119	.dev = {
120		.platform_data = &musb_platform_data,
121		.dma_mask = &ux500_musb_dmamask,
122		.coherent_dma_mask = DMA_BIT_MASK(32),
123	},
124	.num_resources = ARRAY_SIZE(usb_resources),
125	.resource = usb_resources,
126};
127
128static inline void ux500_usb_dma_update_rx_ch_config(int *src_dev_type)
129{
130	u32 idx;
131
132	for (idx = 0; idx < UX500_MUSB_DMA_NUM_RX_CHANNELS; idx++)
133		musb_dma_rx_ch[idx].src_dev_type = src_dev_type[idx];
134}
135
136static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type)
137{
138	u32 idx;
139
140	for (idx = 0; idx < UX500_MUSB_DMA_NUM_TX_CHANNELS; idx++)
141		musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx];
142}
143
144void ux500_add_usb(struct device *parent, resource_size_t base, int irq,
145		   int *dma_rx_cfg, int *dma_tx_cfg)
146{
147	ux500_musb_device.resource[0].start = base;
148	ux500_musb_device.resource[0].end = base + SZ_64K - 1;
149	ux500_musb_device.resource[1].start = irq;
150	ux500_musb_device.resource[1].end = irq;
151
152	ux500_usb_dma_update_rx_ch_config(dma_rx_cfg);
153	ux500_usb_dma_update_tx_ch_config(dma_tx_cfg);
154
155	ux500_musb_device.dev.parent = parent;
156
157	platform_device_register(&ux500_musb_device);
158}