1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * linux/arch/arm/mach-pxa/zylonite_pxa300.c 4 * 5 * PXA300/PXA310 specific support code for the 6 * PXA3xx Development Platform (aka Zylonite) 7 * 8 * Copyright (C) 2007 Marvell Internation Ltd. 9 * 2007-08-21: eric miao <eric.miao@marvell.com> 10 * initial version 11 */ 12 13#include <linux/module.h> 14#include <linux/kernel.h> 15#include <linux/init.h> 16#include <linux/i2c.h> 17#include <linux/platform_data/i2c-pxa.h> 18#include <linux/platform_data/pca953x.h> 19#include <linux/gpio.h> 20 21#include "pxa300.h" 22#include "devices.h" 23#include "zylonite.h" 24 25#include "generic.h" 26 27/* PXA300/PXA310 common configurations */ 28static mfp_cfg_t common_mfp_cfg[] __initdata = { 29 /* LCD */ 30 GPIO54_LCD_LDD_0, 31 GPIO55_LCD_LDD_1, 32 GPIO56_LCD_LDD_2, 33 GPIO57_LCD_LDD_3, 34 GPIO58_LCD_LDD_4, 35 GPIO59_LCD_LDD_5, 36 GPIO60_LCD_LDD_6, 37 GPIO61_LCD_LDD_7, 38 GPIO62_LCD_LDD_8, 39 GPIO63_LCD_LDD_9, 40 GPIO64_LCD_LDD_10, 41 GPIO65_LCD_LDD_11, 42 GPIO66_LCD_LDD_12, 43 GPIO67_LCD_LDD_13, 44 GPIO68_LCD_LDD_14, 45 GPIO69_LCD_LDD_15, 46 GPIO70_LCD_LDD_16, 47 GPIO71_LCD_LDD_17, 48 GPIO72_LCD_FCLK, 49 GPIO73_LCD_LCLK, 50 GPIO74_LCD_PCLK, 51 GPIO75_LCD_BIAS, 52 GPIO76_LCD_VSYNC, 53 GPIO127_LCD_CS_N, 54 GPIO20_PWM3_OUT, /* backlight */ 55 56 /* BTUART */ 57 GPIO111_UART2_RTS, 58 GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL, 59 GPIO113_UART2_TXD, 60 GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH, 61 62 /* STUART */ 63 GPIO109_UART3_TXD, 64 GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL, 65 66 /* AC97 */ 67 GPIO23_AC97_nACRESET, 68 GPIO24_AC97_SYSCLK, 69 GPIO29_AC97_BITCLK, 70 GPIO25_AC97_SDATA_IN_0, 71 GPIO27_AC97_SDATA_OUT, 72 GPIO28_AC97_SYNC, 73 GPIO17_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */ 74 75 /* SSP3 */ 76 GPIO91_SSP3_SCLK, 77 GPIO92_SSP3_FRM, 78 GPIO93_SSP3_TXD, 79 GPIO94_SSP3_RXD, 80 81 /* WM9713 IRQ */ 82 GPIO26_GPIO, 83 84 /* Keypad */ 85 GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH, 86 GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH, 87 GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH, 88 GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH, 89 GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH, 90 GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH, 91 GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH, 92 GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH, 93 GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH, 94 GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH, 95 GPIO121_KP_MKOUT_0, 96 GPIO122_KP_MKOUT_1, 97 GPIO123_KP_MKOUT_2, 98 GPIO124_KP_MKOUT_3, 99 GPIO125_KP_MKOUT_4, 100 GPIO4_2_KP_MKOUT_5, 101 GPIO5_2_KP_MKOUT_6, 102 GPIO6_2_KP_MKOUT_7, 103 104 /* MMC1 */ 105 GPIO3_MMC1_DAT0, 106 GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH, 107 GPIO5_MMC1_DAT2, 108 GPIO6_MMC1_DAT3, 109 GPIO7_MMC1_CLK, 110 GPIO8_MMC1_CMD, /* CMD0 for slot 0 */ 111 GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */ 112 113 /* MMC2 */ 114 GPIO9_MMC2_DAT0, 115 GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH, 116 GPIO11_MMC2_DAT2, 117 GPIO12_MMC2_DAT3, 118 GPIO13_MMC2_CLK, 119 GPIO14_MMC2_CMD, 120 121 /* USB Host */ 122 GPIO0_2_USBH_PEN, 123 GPIO1_2_USBH_PWR, 124 125 /* Standard I2C */ 126 GPIO21_I2C_SCL, 127 GPIO22_I2C_SDA, 128 129 /* GPIO */ 130 GPIO18_GPIO | MFP_PULL_HIGH, /* GPIO Expander #0 INT_N */ 131 GPIO19_GPIO | MFP_PULL_HIGH, /* GPIO Expander #1 INT_N */ 132}; 133 134static mfp_cfg_t pxa300_mfp_cfg[] __initdata = { 135 /* FFUART */ 136 GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL, 137 GPIO31_UART1_TXD, 138 GPIO32_UART1_CTS, 139 GPIO37_UART1_RTS, 140 GPIO33_UART1_DCD, 141 GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL, 142 GPIO35_UART1_RI, 143 GPIO36_UART1_DTR, 144 145 /* Ethernet */ 146 GPIO2_nCS3, 147 GPIO99_GPIO, 148}; 149 150static mfp_cfg_t pxa310_mfp_cfg[] __initdata = { 151 /* FFUART */ 152 GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL, 153 GPIO100_UART1_TXD, 154 GPIO101_UART1_CTS, 155 GPIO106_UART1_RTS, 156 157 /* Ethernet */ 158 GPIO2_nCS3, 159 GPIO102_GPIO, 160 161 /* MMC3 */ 162 GPIO7_2_MMC3_DAT0, 163 GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH, 164 GPIO9_2_MMC3_DAT2, 165 GPIO10_2_MMC3_DAT3, 166 GPIO103_MMC3_CLK, 167 GPIO105_MMC3_CMD, 168}; 169 170#define NUM_LCD_DETECT_PINS 7 171 172static int lcd_detect_pins[] __initdata = { 173 MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */ 174 MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */ 175 MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */ 176 MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */ 177 MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */ 178 MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */ 179 MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */ 180}; 181 182static void __init zylonite_detect_lcd_panel(void) 183{ 184 unsigned long mfpr_save[NUM_LCD_DETECT_PINS]; 185 int i, gpio, id = 0; 186 187 /* save the original MFP settings of these pins and configure 188 * them as GPIO Input, DS01X, Pull Neither, Edge Clear 189 */ 190 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { 191 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); 192 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440); 193 } 194 195 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { 196 id = id << 1; 197 gpio = mfp_to_gpio(lcd_detect_pins[i]); 198 gpio_request(gpio, "LCD_ID_PINS"); 199 gpio_direction_input(gpio); 200 201 if (gpio_get_value(gpio)) 202 id = id | 0x1; 203 gpio_free(gpio); 204 } 205 206 /* lcd id, flush out bit 1 */ 207 lcd_id = id & 0x3d; 208 209 /* lcd orientation, portrait or landscape */ 210 lcd_orientation = (id >> 6) & 0x1; 211 212 /* restore the original MFP settings */ 213 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) 214 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); 215} 216 217#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 218static struct pca953x_platform_data gpio_exp[] = { 219 [0] = { 220 .gpio_base = 128, 221 }, 222 [1] = { 223 .gpio_base = 144, 224 }, 225}; 226 227static struct i2c_board_info zylonite_i2c_board_info[] = { 228 { 229 .type = "pca9539", 230 .dev_name = "pca9539-a", 231 .addr = 0x74, 232 .platform_data = &gpio_exp[0], 233 .irq = PXA_GPIO_TO_IRQ(18), 234 }, { 235 .type = "pca9539", 236 .dev_name = "pca9539-b", 237 .addr = 0x75, 238 .platform_data = &gpio_exp[1], 239 .irq = PXA_GPIO_TO_IRQ(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