Felipe Balbi | 18cb7ac | 2009-03-23 18:34:06 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-omap2/usb-musb.c |
| 3 | * |
| 4 | * This file will contain the board specific details for the |
| 5 | * MENTOR USB OTG controller on OMAP3430 |
| 6 | * |
| 7 | * Copyright (C) 2007-2008 Texas Instruments |
| 8 | * Copyright (C) 2008 Nokia Corporation |
| 9 | * Author: Vikram Pandita |
| 10 | * |
| 11 | * Generalization by: |
| 12 | * Felipe Balbi <felipe.balbi@nokia.com> |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License version 2 as |
| 16 | * published by the Free Software Foundation. |
| 17 | */ |
| 18 | |
| 19 | #include <linux/types.h> |
| 20 | #include <linux/errno.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/clk.h> |
| 24 | #include <linux/dma-mapping.h> |
| 25 | #include <linux/io.h> |
| 26 | |
| 27 | #include <linux/usb/musb.h> |
| 28 | |
| 29 | #include <mach/hardware.h> |
| 30 | #include <mach/irqs.h> |
Tony Lindgren | ce491cf | 2009-10-20 09:40:47 -0700 | [diff] [blame] | 31 | #include <plat/mux.h> |
| 32 | #include <plat/usb.h> |
Felipe Balbi | 18cb7ac | 2009-03-23 18:34:06 -0700 | [diff] [blame] | 33 | |
Peter 'p2' De Schrijver | 94a3ef6 | 2009-01-19 19:09:22 +0200 | [diff] [blame] | 34 | #ifdef CONFIG_USB_MUSB_SOC |
| 35 | |
Felipe Balbi | 18cb7ac | 2009-03-23 18:34:06 -0700 | [diff] [blame] | 36 | static struct resource musb_resources[] = { |
| 37 | [0] = { /* start and end set dynamically */ |
| 38 | .flags = IORESOURCE_MEM, |
| 39 | }, |
| 40 | [1] = { /* general IRQ */ |
| 41 | .start = INT_243X_HS_USB_MC, |
| 42 | .flags = IORESOURCE_IRQ, |
| 43 | }, |
| 44 | [2] = { /* DMA IRQ */ |
| 45 | .start = INT_243X_HS_USB_DMA, |
| 46 | .flags = IORESOURCE_IRQ, |
| 47 | }, |
| 48 | }; |
| 49 | |
| 50 | static int clk_on; |
| 51 | |
| 52 | static int musb_set_clock(struct clk *clk, int state) |
| 53 | { |
| 54 | if (state) { |
| 55 | if (clk_on > 0) |
| 56 | return -ENODEV; |
| 57 | |
| 58 | clk_enable(clk); |
| 59 | clk_on = 1; |
| 60 | } else { |
| 61 | if (clk_on == 0) |
| 62 | return -ENODEV; |
| 63 | |
| 64 | clk_disable(clk); |
| 65 | clk_on = 0; |
| 66 | } |
| 67 | |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | static struct musb_hdrc_eps_bits musb_eps[] = { |
| 72 | { "ep1_tx", 10, }, |
| 73 | { "ep1_rx", 10, }, |
| 74 | { "ep2_tx", 9, }, |
| 75 | { "ep2_rx", 9, }, |
| 76 | { "ep3_tx", 3, }, |
| 77 | { "ep3_rx", 3, }, |
| 78 | { "ep4_tx", 3, }, |
| 79 | { "ep4_rx", 3, }, |
| 80 | { "ep5_tx", 3, }, |
| 81 | { "ep5_rx", 3, }, |
| 82 | { "ep6_tx", 3, }, |
| 83 | { "ep6_rx", 3, }, |
| 84 | { "ep7_tx", 3, }, |
| 85 | { "ep7_rx", 3, }, |
| 86 | { "ep8_tx", 2, }, |
| 87 | { "ep8_rx", 2, }, |
| 88 | { "ep9_tx", 2, }, |
| 89 | { "ep9_rx", 2, }, |
| 90 | { "ep10_tx", 2, }, |
| 91 | { "ep10_rx", 2, }, |
| 92 | { "ep11_tx", 2, }, |
| 93 | { "ep11_rx", 2, }, |
| 94 | { "ep12_tx", 2, }, |
| 95 | { "ep12_rx", 2, }, |
| 96 | { "ep13_tx", 2, }, |
| 97 | { "ep13_rx", 2, }, |
| 98 | { "ep14_tx", 2, }, |
| 99 | { "ep14_rx", 2, }, |
| 100 | { "ep15_tx", 2, }, |
| 101 | { "ep15_rx", 2, }, |
| 102 | }; |
| 103 | |
| 104 | static struct musb_hdrc_config musb_config = { |
| 105 | .multipoint = 1, |
| 106 | .dyn_fifo = 1, |
| 107 | .soft_con = 1, |
| 108 | .dma = 1, |
| 109 | .num_eps = 16, |
| 110 | .dma_channels = 7, |
| 111 | .dma_req_chan = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3), |
| 112 | .ram_bits = 12, |
| 113 | .eps_bits = musb_eps, |
| 114 | }; |
| 115 | |
| 116 | static struct musb_hdrc_platform_data musb_plat = { |
| 117 | #ifdef CONFIG_USB_MUSB_OTG |
| 118 | .mode = MUSB_OTG, |
| 119 | #elif defined(CONFIG_USB_MUSB_HDRC_HCD) |
| 120 | .mode = MUSB_HOST, |
| 121 | #elif defined(CONFIG_USB_GADGET_MUSB_HDRC) |
| 122 | .mode = MUSB_PERIPHERAL, |
| 123 | #endif |
| 124 | /* .clock is set dynamically */ |
| 125 | .set_clock = musb_set_clock, |
| 126 | .config = &musb_config, |
| 127 | |
| 128 | /* REVISIT charge pump on TWL4030 can supply up to |
| 129 | * 100 mA ... but this value is board-specific, like |
| 130 | * "mode", and should be passed to usb_musb_init(). |
| 131 | */ |
| 132 | .power = 50, /* up to 100 mA */ |
| 133 | }; |
| 134 | |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 135 | static u64 musb_dmamask = DMA_BIT_MASK(32); |
Felipe Balbi | 18cb7ac | 2009-03-23 18:34:06 -0700 | [diff] [blame] | 136 | |
| 137 | static struct platform_device musb_device = { |
| 138 | .name = "musb_hdrc", |
| 139 | .id = -1, |
| 140 | .dev = { |
| 141 | .dma_mask = &musb_dmamask, |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 142 | .coherent_dma_mask = DMA_BIT_MASK(32), |
Felipe Balbi | 18cb7ac | 2009-03-23 18:34:06 -0700 | [diff] [blame] | 143 | .platform_data = &musb_plat, |
| 144 | }, |
| 145 | .num_resources = ARRAY_SIZE(musb_resources), |
| 146 | .resource = musb_resources, |
| 147 | }; |
| 148 | |
Felipe Balbi | 18cb7ac | 2009-03-23 18:34:06 -0700 | [diff] [blame] | 149 | void __init usb_musb_init(void) |
| 150 | { |
| 151 | if (cpu_is_omap243x()) |
| 152 | musb_resources[0].start = OMAP243X_HS_BASE; |
| 153 | else |
| 154 | musb_resources[0].start = OMAP34XX_HSUSB_OTG_BASE; |
| 155 | musb_resources[0].end = musb_resources[0].start + SZ_8K - 1; |
| 156 | |
| 157 | /* |
| 158 | * REVISIT: This line can be removed once all the platforms using |
| 159 | * musb_core.c have been converted to use use clkdev. |
| 160 | */ |
| 161 | musb_plat.clock = "ick"; |
| 162 | |
Felipe Balbi | 18cb7ac | 2009-03-23 18:34:06 -0700 | [diff] [blame] | 163 | if (platform_device_register(&musb_device) < 0) { |
| 164 | printk(KERN_ERR "Unable to register HS-USB (MUSB) device\n"); |
| 165 | return; |
| 166 | } |
| 167 | } |
Peter 'p2' De Schrijver | 94a3ef6 | 2009-01-19 19:09:22 +0200 | [diff] [blame] | 168 | |
| 169 | #else |
| 170 | void __init usb_musb_init(void) |
| 171 | { |
Peter 'p2' De Schrijver | 94a3ef6 | 2009-01-19 19:09:22 +0200 | [diff] [blame] | 172 | } |
| 173 | #endif /* CONFIG_USB_MUSB_SOC */ |