| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [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 | #include <linux/usb/musb.h> |
| 27 | |
| 28 | #include "omap_device.h" |
| 29 | #include "soc.h" |
| 30 | #include "mux.h" |
| 31 | #include "usb.h" |
| 32 | |
| 33 | static struct musb_hdrc_config musb_config = { |
| 34 | .multipoint = 1, |
| 35 | .dyn_fifo = 1, |
| 36 | .num_eps = 16, |
| 37 | .ram_bits = 12, |
| 38 | }; |
| 39 | |
| 40 | static struct musb_hdrc_platform_data musb_plat = { |
| 41 | .mode = MUSB_OTG, |
| 42 | |
| 43 | /* .clock is set dynamically */ |
| 44 | .config = &musb_config, |
| 45 | |
| 46 | /* REVISIT charge pump on TWL4030 can supply up to |
| 47 | * 100 mA ... but this value is board-specific, like |
| 48 | * "mode", and should be passed to usb_musb_init(). |
| 49 | */ |
| 50 | .power = 50, /* up to 100 mA */ |
| 51 | }; |
| 52 | |
| 53 | static u64 musb_dmamask = DMA_BIT_MASK(32); |
| 54 | |
| 55 | static struct omap_musb_board_data musb_default_board_data = { |
| 56 | .interface_type = MUSB_INTERFACE_ULPI, |
| 57 | .mode = MUSB_OTG, |
| 58 | .power = 100, |
| 59 | }; |
| 60 | |
| 61 | void __init usb_musb_init(struct omap_musb_board_data *musb_board_data) |
| 62 | { |
| 63 | struct omap_hwmod *oh; |
| 64 | struct platform_device *pdev; |
| 65 | struct device *dev; |
| 66 | int bus_id = -1; |
| 67 | const char *oh_name, *name; |
| 68 | struct omap_musb_board_data *board_data; |
| 69 | |
| 70 | if (musb_board_data) |
| 71 | board_data = musb_board_data; |
| 72 | else |
| 73 | board_data = &musb_default_board_data; |
| 74 | |
| 75 | /* |
| 76 | * REVISIT: This line can be removed once all the platforms using |
| 77 | * musb_core.c have been converted to use use clkdev. |
| 78 | */ |
| 79 | musb_plat.clock = "ick"; |
| 80 | musb_plat.board_data = board_data; |
| 81 | musb_plat.power = board_data->power >> 1; |
| 82 | musb_plat.mode = board_data->mode; |
| 83 | musb_plat.extvbus = board_data->extvbus; |
| 84 | |
| 85 | oh_name = "usb_otg_hs"; |
| 86 | name = "musb-omap2430"; |
| 87 | |
| 88 | oh = omap_hwmod_lookup(oh_name); |
| 89 | if (WARN(!oh, "%s: could not find omap_hwmod for %s\n", |
| 90 | __func__, oh_name)) |
| 91 | return; |
| 92 | |
| 93 | pdev = omap_device_build(name, bus_id, oh, &musb_plat, |
| 94 | sizeof(musb_plat)); |
| 95 | if (IS_ERR(pdev)) { |
| 96 | pr_err("Could not build omap_device for %s %s\n", |
| 97 | name, oh_name); |
| 98 | return; |
| 99 | } |
| 100 | |
| 101 | dev = &pdev->dev; |
| 102 | get_device(dev); |
| 103 | dev->dma_mask = &musb_dmamask; |
| 104 | dev->coherent_dma_mask = musb_dmamask; |
| 105 | put_device(dev); |
| 106 | } |