1/* 2 * linux/arch/arm/mach-pxa/zylonite_pxa300.c 3 * 4 * PXA300/PXA310 specific support code for the 5 * PXA3xx Development Platform (aka Zylonite) 6 * 7 * Copyright (C) 2007 Marvell Internation Ltd. 8 * 2007-08-21: eric miao <eric.miao@marvell.com> 9 * initial version 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 as 13 * published by the Free Software Foundation. 14 */ 15 16#include <linux/module.h> 17#include <linux/kernel.h> 18#include <linux/init.h> 19#include <linux/i2c.h> 20#include <linux/i2c/pca953x.h> 21#include <linux/gpio.h> 22 23#include <mach/pxa300.h> 24#include <plat/i2c.h> 25#include <mach/zylonite.h> 26 27#include "generic.h" 28 29/* PXA300/PXA310 common configurations */ 30static mfp_cfg_t common_mfp_cfg[] __initdata = { 31 /* LCD */ 32 GPIO54_LCD_LDD_0, 33 GPIO55_LCD_LDD_1, 34 GPIO56_LCD_LDD_2, 35 GPIO57_LCD_LDD_3, 36 GPIO58_LCD_LDD_4, 37 GPIO59_LCD_LDD_5, 38 GPIO60_LCD_LDD_6, 39 GPIO61_LCD_LDD_7, 40 GPIO62_LCD_LDD_8, 41 GPIO63_LCD_LDD_9, 42 GPIO64_LCD_LDD_10, 43 GPIO65_LCD_LDD_11, 44 GPIO66_LCD_LDD_12, 45 GPIO67_LCD_LDD_13, 46 GPIO68_LCD_LDD_14, 47 GPIO69_LCD_LDD_15, 48 GPIO70_LCD_LDD_16, 49 GPIO71_LCD_LDD_17, 50 GPIO72_LCD_FCLK, 51 GPIO73_LCD_LCLK, 52 GPIO74_LCD_PCLK, 53 GPIO75_LCD_BIAS, 54 GPIO76_LCD_VSYNC, 55 GPIO127_LCD_CS_N, 56 GPIO20_PWM3_OUT, /* backlight */ 57 58 /* BTUART */ 59 GPIO111_UART2_RTS, 60 GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL, 61 GPIO113_UART2_TXD, 62 GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH, 63 64 /* STUART */ 65 GPIO109_UART3_TXD, 66 GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL, 67 68 /* AC97 */ 69 GPIO23_AC97_nACRESET, 70 GPIO24_AC97_SYSCLK, 71 GPIO29_AC97_BITCLK, 72 GPIO25_AC97_SDATA_IN_0, 73 GPIO27_AC97_SDATA_OUT, 74 GPIO28_AC97_SYNC, 75 GPIO17_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */ 76 77 /* SSP3 */ 78 GPIO91_SSP3_SCLK, 79 GPIO92_SSP3_FRM, 80 GPIO93_SSP3_TXD, 81 GPIO94_SSP3_RXD, 82 83 /* WM9713 IRQ */ 84 GPIO26_GPIO, 85 86 /* Keypad */ 87 GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH, 88 GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH, 89 GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH, 90 GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH, 91 GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH, 92 GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH, 93 GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH, 94 GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH, 95 GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH, 96 GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH, 97 GPIO121_KP_MKOUT_0, 98 GPIO122_KP_MKOUT_1, 99 GPIO123_KP_MKOUT_2, 100 GPIO124_KP_MKOUT_3, 101 GPIO125_KP_MKOUT_4, 102 GPIO4_2_KP_MKOUT_5, 103 GPIO5_2_KP_MKOUT_6, 104 GPIO6_2_KP_MKOUT_7, 105 106 /* MMC1 */ 107 GPIO3_MMC1_DAT0, 108 GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH, 109 GPIO5_MMC1_DAT2, 110 GPIO6_MMC1_DAT3, 111 GPIO7_MMC1_CLK, 112 GPIO8_MMC1_CMD, /* CMD0 for slot 0 */ 113 GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */ 114 115 /* MMC2 */ 116 GPIO9_MMC2_DAT0, 117 GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH, 118 GPIO11_MMC2_DAT2, 119 GPIO12_MMC2_DAT3, 120 GPIO13_MMC2_CLK, 121 GPIO14_MMC2_CMD, 122 123 /* USB Host */ 124 GPIO0_2_USBH_PEN, 125 GPIO1_2_USBH_PWR, 126 127 /* Standard I2C */ 128 GPIO21_I2C_SCL, 129 GPIO22_I2C_SDA, 130 131 /* GPIO */ 132 GPIO18_GPIO | MFP_PULL_HIGH, /* GPIO Expander #0 INT_N */ 133 GPIO19_GPIO | MFP_PULL_HIGH, /* GPIO Expander #1 INT_N */ 134}; 135 136static mfp_cfg_t pxa300_mfp_cfg[] __initdata = { 137 /* FFUART */ 138 GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL, 139 GPIO31_UART1_TXD, 140 GPIO32_UART1_CTS, 141 GPIO37_UART1_RTS, 142 GPIO33_UART1_DCD, 143 GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL, 144 GPIO35_UART1_RI, 145 GPIO36_UART1_DTR, 146 147 /* Ethernet */ 148 GPIO2_nCS3, 149 GPIO99_GPIO, 150}; 151 152static mfp_cfg_t pxa310_mfp_cfg[] __initdata = { 153 /* FFUART */ 154 GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL, 155 GPIO100_UART1_TXD, 156 GPIO101_UART1_CTS, 157 GPIO106_UART1_RTS, 158 159 /* Ethernet */ 160 GPIO2_nCS3, 161 GPIO102_GPIO, 162 163 /* MMC3 */ 164 GPIO7_2_MMC3_DAT0, 165 GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH, 166 GPIO9_2_MMC3_DAT2, 167 GPIO10_2_MMC3_DAT3, 168 GPIO103_MMC3_CLK, 169 GPIO105_MMC3_CMD, 170}; 171 172#define NUM_LCD_DETECT_PINS 7 173 174static int lcd_detect_pins[] __initdata = { 175 MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */ 176 MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */ 177 MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */ 178 MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */ 179 MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */ 180 MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */ 181 MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */ 182}; 183 184static void __init zylonite_detect_lcd_panel(void) 185{ 186 unsigned long mfpr_save[NUM_LCD_DETECT_PINS]; 187 int i, gpio, id = 0; 188 189 /* save the original MFP settings of these pins and configure 190 * them as GPIO Input, DS01X, Pull Neither, Edge Clear 191 */ 192 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { 193 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); 194 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440); 195 } 196 197 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { 198 id = id << 1; 199 gpio = mfp_to_gpio(lcd_detect_pins[i]); 200 gpio_request(gpio, "LCD_ID_PINS"); 201 gpio_direction_input(gpio); 202 203 if (gpio_get_value(gpio)) 204 id = id | 0x1; 205 gpio_free(gpio); 206 } 207 208 /* lcd id, flush out bit 1 */ 209 lcd_id = id & 0x3d; 210 211 /* lcd orientation, portrait or landscape */ 212 lcd_orientation = (id >> 6) & 0x1; 213 214 /* restore the original MFP settings */ 215 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) 216 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); 217} 218 219#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 220static struct pca953x_platform_data gpio_exp[] = { 221 [0] = { 222 .gpio_base = 128, 223 }, 224 [1] = { 225 .gpio_base = 144, 226 }, 227}; 228 229static struct i2c_board_info zylonite_i2c_board_info[] = { 230 { 231 .type = "pca9539", 232 .addr = 0x74, 233 .platform_data = &gpio_exp[0], 234 .irq = IRQ_GPIO(18), 235 }, { 236 .type = "pca9539", 237 .addr = 0x75, 238 .platform_data = &gpio_exp[1], 239 .irq = IRQ_GPIO(19), 240 }, 241}; 242 243static void __init zylonite_init_i2c(void) 244{ 245 pxa_set_i2c_info(NULL); 246 i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info)); 247} 248#else 249static inline void zylonite_init_i2c(void) {} 250#endif 251 252void __init zylonite_pxa300_init(void) 253{ 254 if (cpu_is_pxa300() || cpu_is_pxa310()) { 255 /* initialize MFP */ 256 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg)); 257 258 /* detect LCD panel */ 259 zylonite_detect_lcd_panel(); 260 261 /* WM9713 IRQ */ 262 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26); 263 264 zylonite_init_i2c(); 265 } 266 267 if (cpu_is_pxa300()) { 268 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg)); 269 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99); 270 } 271 272 if (cpu_is_pxa310()) { 273 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg)); 274 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102); 275 } 276 277 /* GPIOs for Debug LEDs */ 278 gpio_debug_led1 = EXT_GPIO(25); 279 gpio_debug_led2 = EXT_GPIO(26); 280} 281