159 lines
3.9 KiB
C
159 lines
3.9 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2011
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*
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* Author: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
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* License terms: GNU General Public License (GPL) version 2
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*/
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#include <linux/platform_device.h>
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#include <linux/usb/musb.h>
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#include <linux/dma-mapping.h>
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#include <plat/ste_dma40.h>
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#include <mach/hardware.h>
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#include <mach/usb.h>
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#define MUSB_DMA40_RX_CH { \
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.mode = STEDMA40_MODE_LOGICAL, \
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.dir = STEDMA40_PERIPH_TO_MEM, \
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.dst_dev_type = STEDMA40_DEV_DST_MEMORY, \
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.src_info.data_width = STEDMA40_WORD_WIDTH, \
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.dst_info.data_width = STEDMA40_WORD_WIDTH, \
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.src_info.psize = STEDMA40_PSIZE_LOG_16, \
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.dst_info.psize = STEDMA40_PSIZE_LOG_16, \
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}
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#define MUSB_DMA40_TX_CH { \
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.mode = STEDMA40_MODE_LOGICAL, \
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.dir = STEDMA40_MEM_TO_PERIPH, \
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.src_dev_type = STEDMA40_DEV_SRC_MEMORY, \
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.src_info.data_width = STEDMA40_WORD_WIDTH, \
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.dst_info.data_width = STEDMA40_WORD_WIDTH, \
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.src_info.psize = STEDMA40_PSIZE_LOG_16, \
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.dst_info.psize = STEDMA40_PSIZE_LOG_16, \
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}
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static struct stedma40_chan_cfg musb_dma_rx_ch[UX500_MUSB_DMA_NUM_RX_CHANNELS]
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= {
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MUSB_DMA40_RX_CH,
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MUSB_DMA40_RX_CH,
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MUSB_DMA40_RX_CH,
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MUSB_DMA40_RX_CH,
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MUSB_DMA40_RX_CH,
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MUSB_DMA40_RX_CH,
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MUSB_DMA40_RX_CH,
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MUSB_DMA40_RX_CH
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};
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static struct stedma40_chan_cfg musb_dma_tx_ch[UX500_MUSB_DMA_NUM_TX_CHANNELS]
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= {
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MUSB_DMA40_TX_CH,
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MUSB_DMA40_TX_CH,
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MUSB_DMA40_TX_CH,
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MUSB_DMA40_TX_CH,
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MUSB_DMA40_TX_CH,
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MUSB_DMA40_TX_CH,
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MUSB_DMA40_TX_CH,
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MUSB_DMA40_TX_CH,
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};
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static void *ux500_dma_rx_param_array[UX500_MUSB_DMA_NUM_RX_CHANNELS] = {
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&musb_dma_rx_ch[0],
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&musb_dma_rx_ch[1],
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&musb_dma_rx_ch[2],
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&musb_dma_rx_ch[3],
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&musb_dma_rx_ch[4],
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&musb_dma_rx_ch[5],
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&musb_dma_rx_ch[6],
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&musb_dma_rx_ch[7]
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};
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static void *ux500_dma_tx_param_array[UX500_MUSB_DMA_NUM_TX_CHANNELS] = {
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&musb_dma_tx_ch[0],
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&musb_dma_tx_ch[1],
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&musb_dma_tx_ch[2],
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&musb_dma_tx_ch[3],
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&musb_dma_tx_ch[4],
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&musb_dma_tx_ch[5],
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&musb_dma_tx_ch[6],
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&musb_dma_tx_ch[7]
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};
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static struct ux500_musb_board_data musb_board_data = {
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.dma_rx_param_array = ux500_dma_rx_param_array,
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.dma_tx_param_array = ux500_dma_tx_param_array,
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.num_rx_channels = UX500_MUSB_DMA_NUM_RX_CHANNELS,
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.num_tx_channels = UX500_MUSB_DMA_NUM_TX_CHANNELS,
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.dma_filter = stedma40_filter,
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};
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static u64 ux500_musb_dmamask = DMA_BIT_MASK(32);
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static struct musb_hdrc_config musb_hdrc_config = {
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.multipoint = true,
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.dyn_fifo = true,
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.num_eps = 16,
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.ram_bits = 16,
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};
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static struct musb_hdrc_platform_data musb_platform_data = {
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.mode = MUSB_OTG,
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.config = &musb_hdrc_config,
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.board_data = &musb_board_data,
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};
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static struct resource usb_resources[] = {
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[0] = {
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.name = "usb-mem",
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "mc", /* hard-coded in musb */
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.flags = IORESOURCE_IRQ,
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},
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};
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struct platform_device ux500_musb_device = {
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.name = "musb-ux500",
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.id = 0,
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.dev = {
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.platform_data = &musb_platform_data,
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.dma_mask = &ux500_musb_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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},
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.num_resources = ARRAY_SIZE(usb_resources),
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.resource = usb_resources,
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};
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static inline void ux500_usb_dma_update_rx_ch_config(int *src_dev_type)
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{
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u32 idx;
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for (idx = 0; idx < UX500_MUSB_DMA_NUM_RX_CHANNELS; idx++)
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musb_dma_rx_ch[idx].src_dev_type = src_dev_type[idx];
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}
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static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type)
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{
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u32 idx;
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for (idx = 0; idx < UX500_MUSB_DMA_NUM_TX_CHANNELS; idx++)
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musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx];
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}
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void ux500_add_usb(struct device *parent, resource_size_t base, int irq,
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int *dma_rx_cfg, int *dma_tx_cfg)
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{
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ux500_musb_device.resource[0].start = base;
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ux500_musb_device.resource[0].end = base + SZ_64K - 1;
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ux500_musb_device.resource[1].start = irq;
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ux500_musb_device.resource[1].end = irq;
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ux500_usb_dma_update_rx_ch_config(dma_rx_cfg);
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ux500_usb_dma_update_tx_ch_config(dma_tx_cfg);
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ux500_musb_device.dev.parent = parent;
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platform_device_register(&ux500_musb_device);
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}
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