1f517afd5SLaurence Withers /* 2f517afd5SLaurence Withers * GPIO driver for TI DaVinci DA8xx SOCs. 3f517afd5SLaurence Withers * 4f517afd5SLaurence Withers * (C) Copyright 2011 Guralp Systems Ltd. 5f517afd5SLaurence Withers * Laurence Withers <lwithers@guralp.com> 6f517afd5SLaurence Withers * 7f517afd5SLaurence Withers * This program is free software; you can redistribute it and/or 8f517afd5SLaurence Withers * modify it under the terms of the GNU General Public License as 9f517afd5SLaurence Withers * published by the Free Software Foundation; either version 2 of 10f517afd5SLaurence Withers * the License, or (at your option) any later version. 11f517afd5SLaurence Withers * 12f517afd5SLaurence Withers * This program is distributed in the hope that it will be useful, 13f517afd5SLaurence Withers * but WITHOUT ANY WARRANTY; without even the implied warranty of 14f517afd5SLaurence Withers * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15f517afd5SLaurence Withers * GNU General Public License for more details. 16f517afd5SLaurence Withers * 17f517afd5SLaurence Withers * You should have received a copy of the GNU General Public License 18f517afd5SLaurence Withers * along with this program; if not, write to the Free Software 19f517afd5SLaurence Withers * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 20f517afd5SLaurence Withers * MA 02111-1307 USA 21f517afd5SLaurence Withers */ 22f517afd5SLaurence Withers 23f517afd5SLaurence Withers #include <common.h> 24f517afd5SLaurence Withers #include <asm/io.h> 25f517afd5SLaurence Withers #include <asm/gpio.h> 26f517afd5SLaurence Withers #include <asm/arch/hardware.h> 27f517afd5SLaurence Withers #include <asm/arch/davinci_misc.h> 28f517afd5SLaurence Withers 29f517afd5SLaurence Withers static struct gpio_registry { 30f517afd5SLaurence Withers int is_registered; 31f517afd5SLaurence Withers char name[GPIO_NAME_SIZE]; 32f517afd5SLaurence Withers } gpio_registry[MAX_NUM_GPIOS]; 33f517afd5SLaurence Withers 3403414ac4SHolger Hans Peter Freyther #if defined(CONFIG_SOC_DA8XX) 35f517afd5SLaurence Withers #define pinmux(x) (&davinci_syscfg_regs->pinmux[x]) 36f517afd5SLaurence Withers 37b9f56698STomas Novotny #if defined(CONFIG_SOC_DA8XX) && !defined(CONFIG_SOC_DA850) 38b9f56698STomas Novotny static const struct pinmux_config gpio_pinmux[] = { 39b9f56698STomas Novotny { pinmux(13), 8, 6 }, /* GP0[0] */ 40b9f56698STomas Novotny { pinmux(13), 8, 7 }, 41b9f56698STomas Novotny { pinmux(14), 8, 0 }, 42b9f56698STomas Novotny { pinmux(14), 8, 1 }, 43b9f56698STomas Novotny { pinmux(14), 8, 2 }, 44b9f56698STomas Novotny { pinmux(14), 8, 3 }, 45b9f56698STomas Novotny { pinmux(14), 8, 4 }, 46b9f56698STomas Novotny { pinmux(14), 8, 5 }, 47b9f56698STomas Novotny { pinmux(14), 8, 6 }, 48b9f56698STomas Novotny { pinmux(14), 8, 7 }, 49b9f56698STomas Novotny { pinmux(15), 8, 0 }, 50b9f56698STomas Novotny { pinmux(15), 8, 1 }, 51b9f56698STomas Novotny { pinmux(15), 8, 2 }, 52b9f56698STomas Novotny { pinmux(15), 8, 3 }, 53b9f56698STomas Novotny { pinmux(15), 8, 4 }, 54b9f56698STomas Novotny { pinmux(15), 8, 5 }, 55b9f56698STomas Novotny { pinmux(15), 8, 6 }, /* GP1[0] */ 56b9f56698STomas Novotny { pinmux(15), 8, 7 }, 57b9f56698STomas Novotny { pinmux(16), 8, 0 }, 58b9f56698STomas Novotny { pinmux(16), 8, 1 }, 59b9f56698STomas Novotny { pinmux(16), 8, 2 }, 60b9f56698STomas Novotny { pinmux(16), 8, 3 }, 61b9f56698STomas Novotny { pinmux(16), 8, 4 }, 62b9f56698STomas Novotny { pinmux(16), 8, 5 }, 63b9f56698STomas Novotny { pinmux(16), 8, 6 }, 64b9f56698STomas Novotny { pinmux(16), 8, 7 }, 65b9f56698STomas Novotny { pinmux(17), 8, 0 }, 66b9f56698STomas Novotny { pinmux(17), 8, 1 }, 67b9f56698STomas Novotny { pinmux(17), 8, 2 }, 68b9f56698STomas Novotny { pinmux(17), 8, 3 }, 69b9f56698STomas Novotny { pinmux(17), 8, 4 }, 70b9f56698STomas Novotny { pinmux(17), 8, 5 }, 71b9f56698STomas Novotny { pinmux(17), 8, 6 }, /* GP2[0] */ 72b9f56698STomas Novotny { pinmux(17), 8, 7 }, 73b9f56698STomas Novotny { pinmux(18), 8, 0 }, 74b9f56698STomas Novotny { pinmux(18), 8, 1 }, 75b9f56698STomas Novotny { pinmux(18), 8, 2 }, 76b9f56698STomas Novotny { pinmux(18), 8, 3 }, 77b9f56698STomas Novotny { pinmux(18), 8, 4 }, 78b9f56698STomas Novotny { pinmux(18), 8, 5 }, 79b9f56698STomas Novotny { pinmux(18), 8, 6 }, 80b9f56698STomas Novotny { pinmux(18), 8, 7 }, 81b9f56698STomas Novotny { pinmux(19), 8, 0 }, 82b9f56698STomas Novotny { pinmux(9), 8, 2 }, 83b9f56698STomas Novotny { pinmux(9), 8, 3 }, 84b9f56698STomas Novotny { pinmux(9), 8, 4 }, 85b9f56698STomas Novotny { pinmux(9), 8, 5 }, 86b9f56698STomas Novotny { pinmux(9), 8, 6 }, 87b9f56698STomas Novotny { pinmux(10), 8, 1 }, /* GP3[0] */ 88b9f56698STomas Novotny { pinmux(10), 8, 2 }, 89b9f56698STomas Novotny { pinmux(10), 8, 3 }, 90b9f56698STomas Novotny { pinmux(10), 8, 4 }, 91b9f56698STomas Novotny { pinmux(10), 8, 5 }, 92b9f56698STomas Novotny { pinmux(10), 8, 6 }, 93b9f56698STomas Novotny { pinmux(10), 8, 7 }, 94b9f56698STomas Novotny { pinmux(11), 8, 0 }, 95b9f56698STomas Novotny { pinmux(11), 8, 1 }, 96b9f56698STomas Novotny { pinmux(11), 8, 2 }, 97b9f56698STomas Novotny { pinmux(11), 8, 3 }, 98b9f56698STomas Novotny { pinmux(11), 8, 4 }, 99b9f56698STomas Novotny { pinmux(9), 8, 7 }, 100b9f56698STomas Novotny { pinmux(2), 8, 6 }, 101b9f56698STomas Novotny { pinmux(11), 8, 5 }, 102b9f56698STomas Novotny { pinmux(11), 8, 6 }, 103b9f56698STomas Novotny { pinmux(12), 8, 4 }, /* GP4[0] */ 104b9f56698STomas Novotny { pinmux(12), 8, 5 }, 105b9f56698STomas Novotny { pinmux(12), 8, 6 }, 106b9f56698STomas Novotny { pinmux(12), 8, 7 }, 107b9f56698STomas Novotny { pinmux(13), 8, 0 }, 108b9f56698STomas Novotny { pinmux(13), 8, 1 }, 109b9f56698STomas Novotny { pinmux(13), 8, 2 }, 110b9f56698STomas Novotny { pinmux(13), 8, 3 }, 111b9f56698STomas Novotny { pinmux(13), 8, 4 }, 112b9f56698STomas Novotny { pinmux(13), 8, 5 }, 113b9f56698STomas Novotny { pinmux(11), 8, 7 }, 114b9f56698STomas Novotny { pinmux(12), 8, 0 }, 115b9f56698STomas Novotny { pinmux(12), 8, 1 }, 116b9f56698STomas Novotny { pinmux(12), 8, 2 }, 117b9f56698STomas Novotny { pinmux(12), 8, 3 }, 118b9f56698STomas Novotny { pinmux(9), 8, 1 }, 119b9f56698STomas Novotny { pinmux(7), 8, 3 }, /* GP5[0] */ 120b9f56698STomas Novotny { pinmux(7), 8, 4 }, 121b9f56698STomas Novotny { pinmux(7), 8, 5 }, 122b9f56698STomas Novotny { pinmux(7), 8, 6 }, 123b9f56698STomas Novotny { pinmux(7), 8, 7 }, 124b9f56698STomas Novotny { pinmux(8), 8, 0 }, 125b9f56698STomas Novotny { pinmux(8), 8, 1 }, 126b9f56698STomas Novotny { pinmux(8), 8, 2 }, 127b9f56698STomas Novotny { pinmux(8), 8, 3 }, 128b9f56698STomas Novotny { pinmux(8), 8, 4 }, 129b9f56698STomas Novotny { pinmux(8), 8, 5 }, 130b9f56698STomas Novotny { pinmux(8), 8, 6 }, 131b9f56698STomas Novotny { pinmux(8), 8, 7 }, 132b9f56698STomas Novotny { pinmux(9), 8, 0 }, 133b9f56698STomas Novotny { pinmux(7), 8, 1 }, 134b9f56698STomas Novotny { pinmux(7), 8, 2 }, 135b9f56698STomas Novotny { pinmux(5), 8, 1 }, /* GP6[0] */ 136b9f56698STomas Novotny { pinmux(5), 8, 2 }, 137b9f56698STomas Novotny { pinmux(5), 8, 3 }, 138b9f56698STomas Novotny { pinmux(5), 8, 4 }, 139b9f56698STomas Novotny { pinmux(5), 8, 5 }, 140b9f56698STomas Novotny { pinmux(5), 8, 6 }, 141b9f56698STomas Novotny { pinmux(5), 8, 7 }, 142b9f56698STomas Novotny { pinmux(6), 8, 0 }, 143b9f56698STomas Novotny { pinmux(6), 8, 1 }, 144b9f56698STomas Novotny { pinmux(6), 8, 2 }, 145b9f56698STomas Novotny { pinmux(6), 8, 3 }, 146b9f56698STomas Novotny { pinmux(6), 8, 4 }, 147b9f56698STomas Novotny { pinmux(6), 8, 5 }, 148b9f56698STomas Novotny { pinmux(6), 8, 6 }, 149b9f56698STomas Novotny { pinmux(6), 8, 7 }, 150b9f56698STomas Novotny { pinmux(7), 8, 0 }, 151b9f56698STomas Novotny { pinmux(1), 8, 0 }, /* GP7[0] */ 152b9f56698STomas Novotny { pinmux(1), 8, 1 }, 153b9f56698STomas Novotny { pinmux(1), 8, 2 }, 154b9f56698STomas Novotny { pinmux(1), 8, 3 }, 155b9f56698STomas Novotny { pinmux(1), 8, 4 }, 156b9f56698STomas Novotny { pinmux(1), 8, 5 }, 157b9f56698STomas Novotny { pinmux(1), 8, 6 }, 158b9f56698STomas Novotny { pinmux(1), 8, 7 }, 159b9f56698STomas Novotny { pinmux(2), 8, 0 }, 160b9f56698STomas Novotny { pinmux(2), 8, 1 }, 161b9f56698STomas Novotny { pinmux(2), 8, 2 }, 162b9f56698STomas Novotny { pinmux(2), 8, 3 }, 163b9f56698STomas Novotny { pinmux(2), 8, 4 }, 164b9f56698STomas Novotny { pinmux(2), 8, 5 }, 165b9f56698STomas Novotny { pinmux(0), 1, 0 }, 166b9f56698STomas Novotny { pinmux(0), 1, 1 }, 167b9f56698STomas Novotny }; 168*76b40ab4STom Rini #else /* CONFIG_SOC_DA8XX && CONFIG_SOC_DA850 */ 169f517afd5SLaurence Withers static const struct pinmux_config gpio_pinmux[] = { 170f517afd5SLaurence Withers { pinmux(1), 8, 7 }, /* GP0[0] */ 171f517afd5SLaurence Withers { pinmux(1), 8, 6 }, 172f517afd5SLaurence Withers { pinmux(1), 8, 5 }, 173f517afd5SLaurence Withers { pinmux(1), 8, 4 }, 174f517afd5SLaurence Withers { pinmux(1), 8, 3 }, 175f517afd5SLaurence Withers { pinmux(1), 8, 2 }, 176f517afd5SLaurence Withers { pinmux(1), 8, 1 }, 177f517afd5SLaurence Withers { pinmux(1), 8, 0 }, 178f517afd5SLaurence Withers { pinmux(0), 8, 7 }, 179f517afd5SLaurence Withers { pinmux(0), 8, 6 }, 180f517afd5SLaurence Withers { pinmux(0), 8, 5 }, 181f517afd5SLaurence Withers { pinmux(0), 8, 4 }, 182f517afd5SLaurence Withers { pinmux(0), 8, 3 }, 183f517afd5SLaurence Withers { pinmux(0), 8, 2 }, 184f517afd5SLaurence Withers { pinmux(0), 8, 1 }, 185f517afd5SLaurence Withers { pinmux(0), 8, 0 }, 186f517afd5SLaurence Withers { pinmux(4), 8, 7 }, /* GP1[0] */ 187f517afd5SLaurence Withers { pinmux(4), 8, 6 }, 188f517afd5SLaurence Withers { pinmux(4), 8, 5 }, 189f517afd5SLaurence Withers { pinmux(4), 8, 4 }, 190f517afd5SLaurence Withers { pinmux(4), 8, 3 }, 191f517afd5SLaurence Withers { pinmux(4), 8, 2 }, 192f517afd5SLaurence Withers { pinmux(4), 4, 1 }, 193f517afd5SLaurence Withers { pinmux(4), 4, 0 }, 194f517afd5SLaurence Withers { pinmux(3), 4, 0 }, 195f517afd5SLaurence Withers { pinmux(2), 4, 6 }, 196f517afd5SLaurence Withers { pinmux(2), 4, 5 }, 197f517afd5SLaurence Withers { pinmux(2), 4, 4 }, 198f517afd5SLaurence Withers { pinmux(2), 4, 3 }, 199f517afd5SLaurence Withers { pinmux(2), 4, 2 }, 200f517afd5SLaurence Withers { pinmux(2), 4, 1 }, 201f517afd5SLaurence Withers { pinmux(2), 8, 0 }, 202f517afd5SLaurence Withers { pinmux(6), 8, 7 }, /* GP2[0] */ 203f517afd5SLaurence Withers { pinmux(6), 8, 6 }, 204f517afd5SLaurence Withers { pinmux(6), 8, 5 }, 205f517afd5SLaurence Withers { pinmux(6), 8, 4 }, 206f517afd5SLaurence Withers { pinmux(6), 8, 3 }, 207f517afd5SLaurence Withers { pinmux(6), 8, 2 }, 208f517afd5SLaurence Withers { pinmux(6), 8, 1 }, 209f517afd5SLaurence Withers { pinmux(6), 8, 0 }, 210f517afd5SLaurence Withers { pinmux(5), 8, 7 }, 211f517afd5SLaurence Withers { pinmux(5), 8, 6 }, 212f517afd5SLaurence Withers { pinmux(5), 8, 5 }, 213f517afd5SLaurence Withers { pinmux(5), 8, 4 }, 214f517afd5SLaurence Withers { pinmux(5), 8, 3 }, 215f517afd5SLaurence Withers { pinmux(5), 8, 2 }, 216f517afd5SLaurence Withers { pinmux(5), 8, 1 }, 217f517afd5SLaurence Withers { pinmux(5), 8, 0 }, 218f517afd5SLaurence Withers { pinmux(8), 8, 7 }, /* GP3[0] */ 219f517afd5SLaurence Withers { pinmux(8), 8, 6 }, 220f517afd5SLaurence Withers { pinmux(8), 8, 5 }, 221f517afd5SLaurence Withers { pinmux(8), 8, 4 }, 222f517afd5SLaurence Withers { pinmux(8), 8, 3 }, 223f517afd5SLaurence Withers { pinmux(8), 8, 2 }, 224f517afd5SLaurence Withers { pinmux(8), 8, 1 }, 225f517afd5SLaurence Withers { pinmux(8), 8, 0 }, 226f517afd5SLaurence Withers { pinmux(7), 8, 7 }, 227f517afd5SLaurence Withers { pinmux(7), 8, 6 }, 228f517afd5SLaurence Withers { pinmux(7), 8, 5 }, 229f517afd5SLaurence Withers { pinmux(7), 8, 4 }, 230f517afd5SLaurence Withers { pinmux(7), 8, 3 }, 231f517afd5SLaurence Withers { pinmux(7), 8, 2 }, 232f517afd5SLaurence Withers { pinmux(7), 8, 1 }, 233f517afd5SLaurence Withers { pinmux(7), 8, 0 }, 234f517afd5SLaurence Withers { pinmux(10), 8, 7 }, /* GP4[0] */ 235f517afd5SLaurence Withers { pinmux(10), 8, 6 }, 236f517afd5SLaurence Withers { pinmux(10), 8, 5 }, 237f517afd5SLaurence Withers { pinmux(10), 8, 4 }, 238f517afd5SLaurence Withers { pinmux(10), 8, 3 }, 239f517afd5SLaurence Withers { pinmux(10), 8, 2 }, 240f517afd5SLaurence Withers { pinmux(10), 8, 1 }, 241f517afd5SLaurence Withers { pinmux(10), 8, 0 }, 242f517afd5SLaurence Withers { pinmux(9), 8, 7 }, 243f517afd5SLaurence Withers { pinmux(9), 8, 6 }, 244f517afd5SLaurence Withers { pinmux(9), 8, 5 }, 245f517afd5SLaurence Withers { pinmux(9), 8, 4 }, 246f517afd5SLaurence Withers { pinmux(9), 8, 3 }, 247f517afd5SLaurence Withers { pinmux(9), 8, 2 }, 248f517afd5SLaurence Withers { pinmux(9), 8, 1 }, 249f517afd5SLaurence Withers { pinmux(9), 8, 0 }, 250f517afd5SLaurence Withers { pinmux(12), 8, 7 }, /* GP5[0] */ 251f517afd5SLaurence Withers { pinmux(12), 8, 6 }, 252f517afd5SLaurence Withers { pinmux(12), 8, 5 }, 253f517afd5SLaurence Withers { pinmux(12), 8, 4 }, 254f517afd5SLaurence Withers { pinmux(12), 8, 3 }, 255f517afd5SLaurence Withers { pinmux(12), 8, 2 }, 256f517afd5SLaurence Withers { pinmux(12), 8, 1 }, 257f517afd5SLaurence Withers { pinmux(12), 8, 0 }, 258f517afd5SLaurence Withers { pinmux(11), 8, 7 }, 259f517afd5SLaurence Withers { pinmux(11), 8, 6 }, 260f517afd5SLaurence Withers { pinmux(11), 8, 5 }, 261f517afd5SLaurence Withers { pinmux(11), 8, 4 }, 262f517afd5SLaurence Withers { pinmux(11), 8, 3 }, 263f517afd5SLaurence Withers { pinmux(11), 8, 2 }, 264f517afd5SLaurence Withers { pinmux(11), 8, 1 }, 265f517afd5SLaurence Withers { pinmux(11), 8, 0 }, 266f517afd5SLaurence Withers { pinmux(19), 8, 6 }, /* GP6[0] */ 267f517afd5SLaurence Withers { pinmux(19), 8, 5 }, 268f517afd5SLaurence Withers { pinmux(19), 8, 4 }, 269f517afd5SLaurence Withers { pinmux(19), 8, 3 }, 270f517afd5SLaurence Withers { pinmux(19), 8, 2 }, 271f517afd5SLaurence Withers { pinmux(16), 8, 1 }, 272f517afd5SLaurence Withers { pinmux(14), 8, 1 }, 273f517afd5SLaurence Withers { pinmux(14), 8, 0 }, 274f517afd5SLaurence Withers { pinmux(13), 8, 7 }, 275f517afd5SLaurence Withers { pinmux(13), 8, 6 }, 276f517afd5SLaurence Withers { pinmux(13), 8, 5 }, 277f517afd5SLaurence Withers { pinmux(13), 8, 4 }, 278f517afd5SLaurence Withers { pinmux(13), 8, 3 }, 279f517afd5SLaurence Withers { pinmux(13), 8, 2 }, 280f517afd5SLaurence Withers { pinmux(13), 8, 1 }, 281f517afd5SLaurence Withers { pinmux(13), 8, 0 }, 282f517afd5SLaurence Withers { pinmux(18), 8, 1 }, /* GP7[0] */ 283f517afd5SLaurence Withers { pinmux(18), 8, 0 }, 284f517afd5SLaurence Withers { pinmux(17), 8, 7 }, 285f517afd5SLaurence Withers { pinmux(17), 8, 6 }, 286f517afd5SLaurence Withers { pinmux(17), 8, 5 }, 287f517afd5SLaurence Withers { pinmux(17), 8, 4 }, 288f517afd5SLaurence Withers { pinmux(17), 8, 3 }, 289f517afd5SLaurence Withers { pinmux(17), 8, 2 }, 290f517afd5SLaurence Withers { pinmux(17), 8, 1 }, 291f517afd5SLaurence Withers { pinmux(17), 8, 0 }, 292f517afd5SLaurence Withers { pinmux(16), 8, 7 }, 293f517afd5SLaurence Withers { pinmux(16), 8, 6 }, 294f517afd5SLaurence Withers { pinmux(16), 8, 5 }, 295f517afd5SLaurence Withers { pinmux(16), 8, 4 }, 296f517afd5SLaurence Withers { pinmux(16), 8, 3 }, 297f517afd5SLaurence Withers { pinmux(16), 8, 2 }, 298f517afd5SLaurence Withers { pinmux(19), 8, 0 }, /* GP8[0] */ 299f517afd5SLaurence Withers { pinmux(3), 4, 7 }, 300f517afd5SLaurence Withers { pinmux(3), 4, 6 }, 301f517afd5SLaurence Withers { pinmux(3), 4, 5 }, 302f517afd5SLaurence Withers { pinmux(3), 4, 4 }, 303f517afd5SLaurence Withers { pinmux(3), 4, 3 }, 304f517afd5SLaurence Withers { pinmux(3), 4, 2 }, 305f517afd5SLaurence Withers { pinmux(2), 4, 7 }, 306f517afd5SLaurence Withers { pinmux(19), 8, 1 }, 307f517afd5SLaurence Withers { pinmux(19), 8, 0 }, 308f517afd5SLaurence Withers { pinmux(18), 8, 7 }, 309f517afd5SLaurence Withers { pinmux(18), 8, 6 }, 310f517afd5SLaurence Withers { pinmux(18), 8, 5 }, 311f517afd5SLaurence Withers { pinmux(18), 8, 4 }, 312f517afd5SLaurence Withers { pinmux(18), 8, 3 }, 313f517afd5SLaurence Withers { pinmux(18), 8, 2 }, 314f517afd5SLaurence Withers }; 315*76b40ab4STom Rini #endif /* CONFIG_SOC_DA8XX && !CONFIG_SOC_DA850 */ 316*76b40ab4STom Rini #else /* !CONFIG_SOC_DA8XX */ 31703414ac4SHolger Hans Peter Freyther #define davinci_configure_pin_mux(a, b) 318*76b40ab4STom Rini #endif /* CONFIG_SOC_DA8XX */ 319f517afd5SLaurence Withers 320365d6070SJoe Hershberger int gpio_request(unsigned gpio, const char *label) 321f517afd5SLaurence Withers { 322365d6070SJoe Hershberger if (gpio >= MAX_NUM_GPIOS) 323f517afd5SLaurence Withers return -1; 324f517afd5SLaurence Withers 325365d6070SJoe Hershberger if (gpio_registry[gpio].is_registered) 326f517afd5SLaurence Withers return -1; 327f517afd5SLaurence Withers 328365d6070SJoe Hershberger gpio_registry[gpio].is_registered = 1; 329365d6070SJoe Hershberger strncpy(gpio_registry[gpio].name, label, GPIO_NAME_SIZE); 330365d6070SJoe Hershberger gpio_registry[gpio].name[GPIO_NAME_SIZE - 1] = 0; 331f517afd5SLaurence Withers 332365d6070SJoe Hershberger davinci_configure_pin_mux(&gpio_pinmux[gpio], 1); 333f517afd5SLaurence Withers 334f517afd5SLaurence Withers return 0; 335f517afd5SLaurence Withers } 336f517afd5SLaurence Withers 337365d6070SJoe Hershberger int gpio_free(unsigned gpio) 338f517afd5SLaurence Withers { 339365d6070SJoe Hershberger if (gpio >= MAX_NUM_GPIOS) 340365d6070SJoe Hershberger return -1; 341365d6070SJoe Hershberger 342365d6070SJoe Hershberger if (!gpio_registry[gpio].is_registered) 343365d6070SJoe Hershberger return -1; 344365d6070SJoe Hershberger 345365d6070SJoe Hershberger gpio_registry[gpio].is_registered = 0; 346365d6070SJoe Hershberger gpio_registry[gpio].name[0] = '\0'; 347365d6070SJoe Hershberger /* Do not configure as input or change pin mux here */ 348365d6070SJoe Hershberger return 0; 349f517afd5SLaurence Withers } 350f517afd5SLaurence Withers 351365d6070SJoe Hershberger int gpio_direction_input(unsigned gpio) 352f517afd5SLaurence Withers { 353f517afd5SLaurence Withers struct davinci_gpio *bank; 354f517afd5SLaurence Withers 355365d6070SJoe Hershberger bank = GPIO_BANK(gpio); 356365d6070SJoe Hershberger setbits_le32(&bank->dir, 1U << GPIO_BIT(gpio)); 357f517afd5SLaurence Withers return 0; 358f517afd5SLaurence Withers } 359f517afd5SLaurence Withers 360365d6070SJoe Hershberger int gpio_direction_output(unsigned gpio, int value) 361f517afd5SLaurence Withers { 362f517afd5SLaurence Withers struct davinci_gpio *bank; 363f517afd5SLaurence Withers 364365d6070SJoe Hershberger bank = GPIO_BANK(gpio); 365365d6070SJoe Hershberger clrbits_le32(&bank->dir, 1U << GPIO_BIT(gpio)); 366365d6070SJoe Hershberger gpio_set_value(gpio, value); 367f517afd5SLaurence Withers return 0; 368f517afd5SLaurence Withers } 369f517afd5SLaurence Withers 370365d6070SJoe Hershberger int gpio_get_value(unsigned gpio) 371f517afd5SLaurence Withers { 372f517afd5SLaurence Withers struct davinci_gpio *bank; 373f517afd5SLaurence Withers unsigned int ip; 374f517afd5SLaurence Withers 375365d6070SJoe Hershberger bank = GPIO_BANK(gpio); 376365d6070SJoe Hershberger ip = in_le32(&bank->in_data) & (1U << GPIO_BIT(gpio)); 377f517afd5SLaurence Withers return ip ? 1 : 0; 378f517afd5SLaurence Withers } 379f517afd5SLaurence Withers 380365d6070SJoe Hershberger int gpio_set_value(unsigned gpio, int value) 381f517afd5SLaurence Withers { 382f517afd5SLaurence Withers struct davinci_gpio *bank; 383f517afd5SLaurence Withers 384365d6070SJoe Hershberger bank = GPIO_BANK(gpio); 385f517afd5SLaurence Withers 386f517afd5SLaurence Withers if (value) 387365d6070SJoe Hershberger bank->set_data = 1U << GPIO_BIT(gpio); 388f517afd5SLaurence Withers else 389365d6070SJoe Hershberger bank->clr_data = 1U << GPIO_BIT(gpio); 390365d6070SJoe Hershberger 391365d6070SJoe Hershberger return 0; 392f517afd5SLaurence Withers } 393f517afd5SLaurence Withers 394f517afd5SLaurence Withers void gpio_info(void) 395f517afd5SLaurence Withers { 396365d6070SJoe Hershberger unsigned gpio, dir, val; 397f517afd5SLaurence Withers struct davinci_gpio *bank; 398f517afd5SLaurence Withers 399365d6070SJoe Hershberger for (gpio = 0; gpio < MAX_NUM_GPIOS; ++gpio) { 400365d6070SJoe Hershberger bank = GPIO_BANK(gpio); 401365d6070SJoe Hershberger dir = in_le32(&bank->dir) & (1U << GPIO_BIT(gpio)); 402365d6070SJoe Hershberger val = gpio_get_value(gpio); 403f517afd5SLaurence Withers 404f517afd5SLaurence Withers printf("% 4d: %s: %d [%c] %s\n", 405365d6070SJoe Hershberger gpio, dir ? " in" : "out", val, 406365d6070SJoe Hershberger gpio_registry[gpio].is_registered ? 'x' : ' ', 407365d6070SJoe Hershberger gpio_registry[gpio].name); 408f517afd5SLaurence Withers } 409f517afd5SLaurence Withers } 410