| Mian Yousaf Kaukab | 07f201d | 2011-01-21 17:59:56 +0100 | [diff] [blame] | 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 <plat/ste_dma40.h> |
| 10 | #include <mach/hardware.h> |
| 11 | #include <mach/usb.h> |
| 12 | |
| 13 | #define MUSB_DMA40_RX_CH { \ |
| 14 | .mode = STEDMA40_MODE_LOGICAL, \ |
| 15 | .dir = STEDMA40_PERIPH_TO_MEM, \ |
| 16 | .dst_dev_type = STEDMA40_DEV_DST_MEMORY, \ |
| 17 | .src_info.data_width = STEDMA40_WORD_WIDTH, \ |
| 18 | .dst_info.data_width = STEDMA40_WORD_WIDTH, \ |
| 19 | .src_info.psize = STEDMA40_PSIZE_LOG_16, \ |
| 20 | .dst_info.psize = STEDMA40_PSIZE_LOG_16, \ |
| 21 | } |
| 22 | |
| 23 | #define MUSB_DMA40_TX_CH { \ |
| 24 | .mode = STEDMA40_MODE_LOGICAL, \ |
| 25 | .dir = STEDMA40_MEM_TO_PERIPH, \ |
| 26 | .src_dev_type = STEDMA40_DEV_SRC_MEMORY, \ |
| 27 | .src_info.data_width = STEDMA40_WORD_WIDTH, \ |
| 28 | .dst_info.data_width = STEDMA40_WORD_WIDTH, \ |
| 29 | .src_info.psize = STEDMA40_PSIZE_LOG_16, \ |
| 30 | .dst_info.psize = STEDMA40_PSIZE_LOG_16, \ |
| 31 | } |
| 32 | |
| 33 | static struct stedma40_chan_cfg musb_dma_rx_ch[UX500_MUSB_DMA_NUM_RX_CHANNELS] |
| 34 | = { |
| 35 | MUSB_DMA40_RX_CH, |
| 36 | MUSB_DMA40_RX_CH, |
| 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 | }; |
| 44 | |
| 45 | static struct stedma40_chan_cfg musb_dma_tx_ch[UX500_MUSB_DMA_NUM_TX_CHANNELS] |
| 46 | = { |
| 47 | MUSB_DMA40_TX_CH, |
| 48 | MUSB_DMA40_TX_CH, |
| 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 | }; |
| 56 | |
| 57 | static void *ux500_dma_rx_param_array[UX500_MUSB_DMA_NUM_RX_CHANNELS] = { |
| 58 | &musb_dma_rx_ch[0], |
| 59 | &musb_dma_rx_ch[1], |
| 60 | &musb_dma_rx_ch[2], |
| 61 | &musb_dma_rx_ch[3], |
| 62 | &musb_dma_rx_ch[4], |
| 63 | &musb_dma_rx_ch[5], |
| 64 | &musb_dma_rx_ch[6], |
| 65 | &musb_dma_rx_ch[7] |
| 66 | }; |
| 67 | |
| 68 | static void *ux500_dma_tx_param_array[UX500_MUSB_DMA_NUM_TX_CHANNELS] = { |
| 69 | &musb_dma_tx_ch[0], |
| 70 | &musb_dma_tx_ch[1], |
| 71 | &musb_dma_tx_ch[2], |
| 72 | &musb_dma_tx_ch[3], |
| 73 | &musb_dma_tx_ch[4], |
| 74 | &musb_dma_tx_ch[5], |
| 75 | &musb_dma_tx_ch[6], |
| 76 | &musb_dma_tx_ch[7] |
| 77 | }; |
| 78 | |
| 79 | static struct ux500_musb_board_data musb_board_data = { |
| 80 | .dma_rx_param_array = ux500_dma_rx_param_array, |
| 81 | .dma_tx_param_array = ux500_dma_tx_param_array, |
| 82 | .num_rx_channels = UX500_MUSB_DMA_NUM_RX_CHANNELS, |
| 83 | .num_tx_channels = UX500_MUSB_DMA_NUM_TX_CHANNELS, |
| 84 | .dma_filter = stedma40_filter, |
| 85 | }; |
| 86 | |
| 87 | static u64 ux500_musb_dmamask = DMA_BIT_MASK(32); |
| 88 | |
| 89 | static struct musb_hdrc_config musb_hdrc_config = { |
| 90 | .multipoint = true, |
| 91 | .dyn_fifo = true, |
| 92 | .num_eps = 16, |
| 93 | .ram_bits = 16, |
| 94 | }; |
| 95 | |
| 96 | static struct musb_hdrc_platform_data musb_platform_data = { |
| 97 | #if defined(CONFIG_USB_MUSB_OTG) |
| 98 | .mode = MUSB_OTG, |
| 99 | #elif defined(CONFIG_USB_MUSB_PERIPHERAL) |
| 100 | .mode = MUSB_PERIPHERAL, |
| 101 | #else /* defined(CONFIG_USB_MUSB_HOST) */ |
| 102 | .mode = MUSB_HOST, |
| 103 | #endif |
| 104 | .config = &musb_hdrc_config, |
| 105 | .board_data = &musb_board_data, |
| 106 | }; |
| 107 | |
| 108 | static struct resource usb_resources[] = { |
| 109 | [0] = { |
| 110 | .name = "usb-mem", |
| 111 | .flags = IORESOURCE_MEM, |
| 112 | }, |
| 113 | |
| 114 | [1] = { |
| 115 | .name = "mc", /* hard-coded in musb */ |
| 116 | .flags = IORESOURCE_IRQ, |
| 117 | }, |
| 118 | }; |
| 119 | |
| 120 | struct platform_device ux500_musb_device = { |
| 121 | .name = "musb-ux500", |
| 122 | .id = 0, |
| 123 | .dev = { |
| 124 | .platform_data = &musb_platform_data, |
| 125 | .dma_mask = &ux500_musb_dmamask, |
| 126 | .coherent_dma_mask = DMA_BIT_MASK(32), |
| 127 | }, |
| 128 | .num_resources = ARRAY_SIZE(usb_resources), |
| 129 | .resource = usb_resources, |
| 130 | }; |
| 131 | |
| 132 | static inline void ux500_usb_dma_update_rx_ch_config(int *src_dev_type) |
| 133 | { |
| 134 | u32 idx; |
| 135 | |
| 136 | for (idx = 0; idx < UX500_MUSB_DMA_NUM_RX_CHANNELS; idx++) |
| 137 | musb_dma_rx_ch[idx].src_dev_type = src_dev_type[idx]; |
| 138 | } |
| 139 | |
| 140 | static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type) |
| 141 | { |
| 142 | u32 idx; |
| 143 | |
| 144 | for (idx = 0; idx < UX500_MUSB_DMA_NUM_TX_CHANNELS; idx++) |
| 145 | musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx]; |
| 146 | } |
| 147 | |
| 148 | void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg, |
| 149 | int *dma_tx_cfg) |
| 150 | { |
| 151 | ux500_musb_device.resource[0].start = base; |
| 152 | ux500_musb_device.resource[0].end = base + SZ_64K - 1; |
| 153 | ux500_musb_device.resource[1].start = irq; |
| 154 | ux500_musb_device.resource[1].end = irq; |
| 155 | |
| 156 | ux500_usb_dma_update_rx_ch_config(dma_rx_cfg); |
| 157 | ux500_usb_dma_update_tx_ch_config(dma_tx_cfg); |
| 158 | |
| 159 | platform_device_register(&ux500_musb_device); |
| 160 | } |