diff options
Diffstat (limited to 'arch/arm/mach-ux500/usb.c')
| -rw-r--r-- | arch/arm/mach-ux500/usb.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/usb.c b/arch/arm/mach-ux500/usb.c new file mode 100644 index 000000000000..82e535953fd9 --- /dev/null +++ b/arch/arm/mach-ux500/usb.c @@ -0,0 +1,160 @@ +/* + * 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); +} |