ARM: OMAP3: MUSB initialization for omap hw, v2

[linux-2.6-omap-h63xx.git] / arch / arm / mach-omap2 / usb-musb.c

diff --git a/arch/arm/mach-omap2/usb-musb.c b/arch/arm/mach-omap2/usb-musb.c
new file mode 100644 (file)
index 0000000..fc74e91
--- /dev/null
+++ b/arch/arm/mach-omap2/usb-musb.c
@@ -0,0 +1,187 @@
+/*
+ * linux/arch/arm/mach-omap2/usb-musb.c
+ *
+ * This file will contain the board specific details for the
+ * MENTOR USB OTG controller on OMAP3430
+ *
+ * Copyright (C) 2007-2008 Texas Instruments
+ * Copyright (C) 2008 Nokia Corporation
+ * Author: Vikram Pandita
+ *
+ * Generalization by:
+ * Felipe Balbi <felipe.balbi@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+
+#include <linux/usb/musb.h>
+
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <mach/pm.h>
+#include <mach/mux.h>
+#include <mach/usb.h>
+
+static struct resource musb_resources[] = {
+       [0] = { /* start and end set dynamically */
+               .flags  = IORESOURCE_MEM,
+       },
+       [1] = { /* general IRQ */
+               .start  = INT_243X_HS_USB_MC,
+               .flags  = IORESOURCE_IRQ,
+       },
+       [2] = { /* DMA IRQ */
+               .start  = INT_243X_HS_USB_DMA,
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static int clk_on;
+
+static int musb_set_clock(struct clk *clk, int state)
+{
+       if (state) {
+               if (clk_on > 0)
+                       return -ENODEV;
+
+               clk_enable(clk);
+               clk_on = 1;
+       } else {
+               if (clk_on == 0)
+                       return -ENODEV;
+
+               clk_disable(clk);
+               clk_on = 0;
+       }
+
+       return 0;
+}
+
+static struct musb_hdrc_eps_bits musb_eps[] = {
+       {       "ep1_tx", 10,   },
+       {       "ep1_rx", 10,   },
+       {       "ep2_tx", 9,    },
+       {       "ep2_rx", 9,    },
+       {       "ep3_tx", 3,    },
+       {       "ep3_rx", 3,    },
+       {       "ep4_tx", 3,    },
+       {       "ep4_rx", 3,    },
+       {       "ep5_tx", 3,    },
+       {       "ep5_rx", 3,    },
+       {       "ep6_tx", 3,    },
+       {       "ep6_rx", 3,    },
+       {       "ep7_tx", 3,    },
+       {       "ep7_rx", 3,    },
+       {       "ep8_tx", 2,    },
+       {       "ep8_rx", 2,    },
+       {       "ep9_tx", 2,    },
+       {       "ep9_rx", 2,    },
+       {       "ep10_tx", 2,   },
+       {       "ep10_rx", 2,   },
+       {       "ep11_tx", 2,   },
+       {       "ep11_rx", 2,   },
+       {       "ep12_tx", 2,   },
+       {       "ep12_rx", 2,   },
+       {       "ep13_tx", 2,   },
+       {       "ep13_rx", 2,   },
+       {       "ep14_tx", 2,   },
+       {       "ep14_rx", 2,   },
+       {       "ep15_tx", 2,   },
+       {       "ep15_rx", 2,   },
+};
+
+static struct musb_hdrc_config musb_config = {
+       .multipoint     = 1,
+       .dyn_fifo       = 1,
+       .soft_con       = 1,
+       .dma            = 1,
+       .num_eps        = 16,
+       .dma_channels   = 7,
+       .dma_req_chan   = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3),
+       .ram_bits       = 12,
+       .eps_bits       = musb_eps,
+};
+
+static struct musb_hdrc_platform_data musb_plat = {
+#ifdef CONFIG_USB_MUSB_OTG
+       .mode           = MUSB_OTG,
+#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
+       .mode           = MUSB_HOST,
+#elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
+       .mode           = MUSB_PERIPHERAL,
+#endif
+       /* .clock is set dynamically */
+       .set_clock      = musb_set_clock,
+       .config         = &musb_config,
+
+       /* REVISIT charge pump on TWL4030 can supply up to
+        * 100 mA ... but this value is board-specific, like
+        * "mode", and should be passed to usb_musb_init().
+        */
+       .power          = 50,                   /* up to 100 mA */
+};
+
+static u64 musb_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device musb_device = {
+       .name           = "musb_hdrc",
+       .id             = -1,
+       .dev = {
+               .dma_mask               = &musb_dmamask,
+               .coherent_dma_mask      = DMA_32BIT_MASK,
+               .platform_data          = &musb_plat,
+       },
+       .num_resources  = ARRAY_SIZE(musb_resources),
+       .resource       = musb_resources,
+};
+
+#ifdef CONFIG_NOP_USB_XCEIV
+static u64 nop_xceiv_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device nop_xceiv_device = {
+       .name           = "nop_usb_xceiv",
+       .id             = -1,
+       .dev = {
+               .dma_mask               = &nop_xceiv_dmamask,
+               .coherent_dma_mask      = DMA_32BIT_MASK,
+               .platform_data          = NULL,
+       },
+};
+#endif
+
+void __init usb_musb_init(void)
+{
+       if (cpu_is_omap243x())
+               musb_resources[0].start = OMAP243X_HS_BASE;
+       else
+               musb_resources[0].start = OMAP34XX_HSUSB_OTG_BASE;
+       musb_resources[0].end = musb_resources[0].start + SZ_8K - 1;
+
+       /*
+        * REVISIT: This line can be removed once all the platforms using
+        * musb_core.c have been converted to use use clkdev.
+        */
+       musb_plat.clock = "ick";
+
+#ifdef CONFIG_NOP_USB_XCEIV
+       if (platform_device_register(&nop_xceiv_device) < 0) {
+               printk(KERN_ERR "Unable to register NOP-XCEIV device\n");
+               return;
+       }
+#endif
+
+       if (platform_device_register(&musb_device) < 0) {
+               printk(KERN_ERR "Unable to register HS-USB (MUSB) device\n");
+               return;
+       }
+}