Sriram Dash | 93eb8f3 | 2016-04-05 14:41:19 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2009, 2011 Freescale Semiconductor, Inc. |
| 3 | * |
| 4 | * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB |
| 5 | * |
| 6 | * Author: Tor Krill tor@excito.com |
| 7 | * |
| 8 | * SPDX-License-Identifier: GPL-2.0+ |
| 9 | */ |
| 10 | |
| 11 | #include <common.h> |
| 12 | #include <usb.h> |
| 13 | #include <asm/io.h> |
| 14 | #include <hwconfig.h> |
| 15 | #include <fsl_usb.h> |
| 16 | #include <fdt_support.h> |
| 17 | |
| 18 | #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT |
| 19 | #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 |
| 20 | #endif |
| 21 | |
| 22 | static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode, |
| 23 | const char *phy_type, int start_offset) |
| 24 | { |
| 25 | const char *compat_dr = "fsl-usb2-dr"; |
| 26 | const char *compat_mph = "fsl-usb2-mph"; |
| 27 | const char *prop_mode = "dr_mode"; |
| 28 | const char *prop_type = "phy_type"; |
| 29 | const char *node_type = NULL; |
| 30 | int node_offset; |
| 31 | int err; |
| 32 | |
| 33 | node_offset = fdt_node_offset_by_compatible(blob, |
| 34 | start_offset, compat_mph); |
| 35 | if (node_offset < 0) { |
| 36 | node_offset = fdt_node_offset_by_compatible(blob, |
| 37 | start_offset, |
| 38 | compat_dr); |
| 39 | if (node_offset < 0) { |
| 40 | printf("WARNING: could not find compatible node: %s", |
| 41 | fdt_strerror(node_offset)); |
| 42 | return -1; |
| 43 | } |
| 44 | node_type = compat_dr; |
| 45 | } else { |
| 46 | node_type = compat_mph; |
| 47 | } |
| 48 | |
| 49 | if (mode) { |
| 50 | err = fdt_setprop(blob, node_offset, prop_mode, mode, |
| 51 | strlen(mode) + 1); |
| 52 | if (err < 0) |
| 53 | printf("WARNING: could not set %s for %s: %s.\n", |
| 54 | prop_mode, node_type, fdt_strerror(err)); |
| 55 | } |
| 56 | |
| 57 | if (phy_type) { |
| 58 | err = fdt_setprop(blob, node_offset, prop_type, phy_type, |
| 59 | strlen(phy_type) + 1); |
| 60 | if (err < 0) |
| 61 | printf("WARNING: could not set %s for %s: %s.\n", |
| 62 | prop_type, node_type, fdt_strerror(err)); |
| 63 | } |
| 64 | |
| 65 | return node_offset; |
| 66 | } |
| 67 | |
| 68 | static const char *fdt_usb_get_node_type(void *blob, int start_offset, |
| 69 | int *node_offset) |
| 70 | { |
| 71 | const char *compat_dr = "fsl-usb2-dr"; |
| 72 | const char *compat_mph = "fsl-usb2-mph"; |
| 73 | const char *node_type = NULL; |
| 74 | |
| 75 | *node_offset = fdt_node_offset_by_compatible(blob, start_offset, |
| 76 | compat_mph); |
| 77 | if (*node_offset < 0) { |
| 78 | *node_offset = fdt_node_offset_by_compatible(blob, |
| 79 | start_offset, |
| 80 | compat_dr); |
| 81 | if (*node_offset < 0) { |
| 82 | printf("ERROR: could not find compatible node: %s\n", |
| 83 | fdt_strerror(*node_offset)); |
| 84 | } else { |
| 85 | node_type = compat_dr; |
| 86 | } |
| 87 | } else { |
| 88 | node_type = compat_mph; |
| 89 | } |
| 90 | |
| 91 | return node_type; |
| 92 | } |
| 93 | |
| 94 | static int fdt_fixup_usb_erratum(void *blob, const char *prop_erratum, |
| 95 | int start_offset) |
| 96 | { |
| 97 | int node_offset, err; |
| 98 | const char *node_type = NULL; |
| 99 | |
| 100 | node_type = fdt_usb_get_node_type(blob, start_offset, &node_offset); |
| 101 | if (!node_type) |
| 102 | return -1; |
| 103 | |
| 104 | err = fdt_setprop(blob, node_offset, prop_erratum, NULL, 0); |
| 105 | if (err < 0) { |
| 106 | printf("ERROR: could not set %s for %s: %s.\n", |
| 107 | prop_erratum, node_type, fdt_strerror(err)); |
| 108 | } |
| 109 | |
| 110 | return node_offset; |
| 111 | } |
| 112 | |
| 113 | void fdt_fixup_dr_usb(void *blob, bd_t *bd) |
| 114 | { |
| 115 | static const char * const modes[] = { "host", "peripheral", "otg" }; |
| 116 | static const char * const phys[] = { "ulpi", "utmi", "utmi_dual" }; |
| 117 | int usb_erratum_a006261_off = -1; |
| 118 | int usb_erratum_a007075_off = -1; |
| 119 | int usb_erratum_a007792_off = -1; |
| 120 | int usb_erratum_a005697_off = -1; |
| 121 | int usb_mode_off = -1; |
| 122 | int usb_phy_off = -1; |
| 123 | char str[5]; |
| 124 | int i, j; |
| 125 | |
| 126 | for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) { |
| 127 | const char *dr_mode_type = NULL; |
| 128 | const char *dr_phy_type = NULL; |
| 129 | int mode_idx = -1, phy_idx = -1; |
| 130 | |
| 131 | snprintf(str, 5, "%s%d", "usb", i); |
| 132 | if (hwconfig(str)) { |
| 133 | for (j = 0; j < ARRAY_SIZE(modes); j++) { |
| 134 | if (hwconfig_subarg_cmp(str, "dr_mode", |
| 135 | modes[j])) { |
| 136 | mode_idx = j; |
| 137 | break; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | for (j = 0; j < ARRAY_SIZE(phys); j++) { |
| 142 | if (hwconfig_subarg_cmp(str, "phy_type", |
| 143 | phys[j])) { |
| 144 | phy_idx = j; |
| 145 | break; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | if (mode_idx < 0 && phy_idx < 0) { |
| 150 | printf("WARNING: invalid phy or mode\n"); |
| 151 | return; |
| 152 | } |
| 153 | |
| 154 | if (mode_idx > -1) |
| 155 | dr_mode_type = modes[mode_idx]; |
| 156 | |
| 157 | if (phy_idx > -1) |
| 158 | dr_phy_type = phys[phy_idx]; |
| 159 | } |
| 160 | |
| 161 | if (has_dual_phy()) |
| 162 | dr_phy_type = phys[2]; |
| 163 | |
| 164 | usb_mode_off = fdt_fixup_usb_mode_phy_type(blob, |
| 165 | dr_mode_type, NULL, |
| 166 | usb_mode_off); |
| 167 | |
| 168 | if (usb_mode_off < 0) |
| 169 | return; |
| 170 | |
| 171 | usb_phy_off = fdt_fixup_usb_mode_phy_type(blob, |
| 172 | NULL, dr_phy_type, |
| 173 | usb_phy_off); |
| 174 | |
| 175 | if (usb_phy_off < 0) |
| 176 | return; |
| 177 | |
| 178 | if (has_erratum_a006261()) { |
| 179 | usb_erratum_a006261_off = fdt_fixup_usb_erratum |
| 180 | (blob, |
| 181 | "fsl,usb-erratum-a006261", |
| 182 | usb_erratum_a006261_off); |
| 183 | if (usb_erratum_a006261_off < 0) |
| 184 | return; |
| 185 | } |
| 186 | |
| 187 | if (has_erratum_a007075()) { |
| 188 | usb_erratum_a007075_off = fdt_fixup_usb_erratum |
| 189 | (blob, |
| 190 | "fsl,usb-erratum-a007075", |
| 191 | usb_erratum_a007075_off); |
| 192 | if (usb_erratum_a007075_off < 0) |
| 193 | return; |
| 194 | } |
| 195 | |
| 196 | if (has_erratum_a007792()) { |
| 197 | usb_erratum_a007792_off = fdt_fixup_usb_erratum |
| 198 | (blob, |
| 199 | "fsl,usb-erratum-a007792", |
| 200 | usb_erratum_a007792_off); |
| 201 | if (usb_erratum_a007792_off < 0) |
| 202 | return; |
| 203 | } |
| 204 | if (has_erratum_a005697()) { |
| 205 | usb_erratum_a005697_off = fdt_fixup_usb_erratum |
| 206 | (blob, |
| 207 | "fsl,usb-erratum-a005697", |
| 208 | usb_erratum_a005697_off); |
| 209 | if (usb_erratum_a005697_off < 0) |
| 210 | return; |
| 211 | } |
| 212 | } |
| 213 | } |