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: Mian Yousaf Kaukab <mian-yousaf.kaukab@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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);
+}