zylonite_pxa320.c (5003B)
1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * linux/arch/arm/mach-pxa/zylonite_pxa320.c 4 * 5 * PXA320 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/gpio.h> 17#include <linux/soc/pxa/cpu.h> 18 19#include "pxa320.h" 20#include "zylonite.h" 21 22#include "generic.h" 23 24static mfp_cfg_t mfp_cfg[] __initdata = { 25 /* LCD */ 26 GPIO6_2_LCD_LDD_0, 27 GPIO7_2_LCD_LDD_1, 28 GPIO8_2_LCD_LDD_2, 29 GPIO9_2_LCD_LDD_3, 30 GPIO10_2_LCD_LDD_4, 31 GPIO11_2_LCD_LDD_5, 32 GPIO12_2_LCD_LDD_6, 33 GPIO13_2_LCD_LDD_7, 34 GPIO63_LCD_LDD_8, 35 GPIO64_LCD_LDD_9, 36 GPIO65_LCD_LDD_10, 37 GPIO66_LCD_LDD_11, 38 GPIO67_LCD_LDD_12, 39 GPIO68_LCD_LDD_13, 40 GPIO69_LCD_LDD_14, 41 GPIO70_LCD_LDD_15, 42 GPIO71_LCD_LDD_16, 43 GPIO72_LCD_LDD_17, 44 GPIO73_LCD_CS_N, 45 GPIO74_LCD_VSYNC, 46 GPIO14_2_LCD_FCLK, 47 GPIO15_2_LCD_LCLK, 48 GPIO16_2_LCD_PCLK, 49 GPIO17_2_LCD_BIAS, 50 GPIO14_PWM3_OUT, /* backlight */ 51 52 /* FFUART */ 53 GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL, 54 GPIO42_UART1_TXD, 55 GPIO43_UART1_CTS, 56 GPIO44_UART1_DCD, 57 GPIO45_UART1_DSR | MFP_LPM_EDGE_FALL, 58 GPIO46_UART1_RI, 59 GPIO47_UART1_DTR, 60 GPIO48_UART1_RTS, 61 62 /* AC97 */ 63 GPIO34_AC97_SYSCLK, 64 GPIO35_AC97_SDATA_IN_0, 65 GPIO37_AC97_SDATA_OUT, 66 GPIO38_AC97_SYNC, 67 GPIO39_AC97_BITCLK, 68 GPIO40_AC97_nACRESET, 69 GPIO36_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */ 70 71 /* SSP3 */ 72 GPIO89_SSP3_SCLK, 73 GPIO90_SSP3_FRM, 74 GPIO91_SSP3_TXD, 75 GPIO92_SSP3_RXD, 76 77 /* WM9713 IRQ */ 78 GPIO15_GPIO, 79 80 /* I2C */ 81 GPIO32_I2C_SCL, 82 GPIO33_I2C_SDA, 83 84 /* Keypad */ 85 GPIO105_KP_DKIN_0 | MFP_LPM_EDGE_BOTH, 86 GPIO106_KP_DKIN_1 | MFP_LPM_EDGE_BOTH, 87 GPIO113_KP_MKIN_0 | MFP_LPM_EDGE_BOTH, 88 GPIO114_KP_MKIN_1 | MFP_LPM_EDGE_BOTH, 89 GPIO115_KP_MKIN_2 | MFP_LPM_EDGE_BOTH, 90 GPIO116_KP_MKIN_3 | MFP_LPM_EDGE_BOTH, 91 GPIO117_KP_MKIN_4 | MFP_LPM_EDGE_BOTH, 92 GPIO118_KP_MKIN_5 | MFP_LPM_EDGE_BOTH, 93 GPIO119_KP_MKIN_6 | MFP_LPM_EDGE_BOTH, 94 GPIO120_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 GPIO126_KP_MKOUT_5, 101 GPIO127_KP_MKOUT_6, 102 GPIO5_2_KP_MKOUT_7, 103 104 /* Ethernet */ 105 GPIO4_nCS3, 106 GPIO90_GPIO, 107 108 /* MMC1 */ 109 GPIO18_MMC1_DAT0, 110 GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH, 111 GPIO20_MMC1_DAT2, 112 GPIO21_MMC1_DAT3, 113 GPIO22_MMC1_CLK, 114 GPIO23_MMC1_CMD,/* CMD0 for slot 0 */ 115 GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */ 116 117 /* MMC2 */ 118 GPIO24_MMC2_DAT0, 119 GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH, 120 GPIO26_MMC2_DAT2, 121 GPIO27_MMC2_DAT3, 122 GPIO28_MMC2_CLK, 123 GPIO29_MMC2_CMD, 124 125 /* USB Host */ 126 GPIO2_2_USBH_PEN, 127 GPIO3_2_USBH_PWR, 128 129 /* Debug LEDs */ 130 GPIO1_2_GPIO | MFP_LPM_DRIVE_HIGH, 131 GPIO4_2_GPIO | MFP_LPM_DRIVE_HIGH, 132}; 133 134#define NUM_LCD_DETECT_PINS 7 135 136static int lcd_detect_pins[] __initdata = { 137 MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */ 138 MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */ 139 MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */ 140 MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */ 141 MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */ 142 MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */ 143 MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */ 144 /* 145 * set the MFP_PIN_GPIO 14/15/17 to alternate function other than 146 * GPIO to avoid input level confliction with 14_2, 15_2, 17_2 147 */ 148 MFP_PIN_GPIO14, 149 MFP_PIN_GPIO15, 150 MFP_PIN_GPIO17, 151}; 152 153static int lcd_detect_mfpr[] __initdata = { 154 /* AF0, DS 1X, Pull Neither, Edge Clear */ 155 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 156 0xc442, /* Backlight, Pull-Up, AF2 */ 157 0x8445, /* AF5 */ 158 0x8445, /* AF5 */ 159}; 160 161static void __init zylonite_detect_lcd_panel(void) 162{ 163 unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)]; 164 int i, gpio, id = 0; 165 166 /* save the original MFP settings of these pins and configure them 167 * as GPIO Input, DS01X, Pull Neither, Edge Clear 168 */ 169 for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) { 170 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); 171 pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]); 172 } 173 174 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { 175 id = id << 1; 176 gpio = mfp_to_gpio(lcd_detect_pins[i]); 177 gpio_request(gpio, "LCD_ID_PINS"); 178 gpio_direction_input(gpio); 179 180 if (gpio_get_value(gpio)) 181 id = id | 0x1; 182 gpio_free(gpio); 183 } 184 185 /* lcd id, flush out bit 1 */ 186 lcd_id = id & 0x3d; 187 188 /* lcd orientation, portrait or landscape */ 189 lcd_orientation = (id >> 6) & 0x1; 190 191 /* restore the original MFP settings */ 192 for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) 193 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); 194} 195 196void __init zylonite_pxa320_init(void) 197{ 198 if (cpu_is_pxa320()) { 199 /* initialize MFP */ 200 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg)); 201 202 /* detect LCD panel */ 203 zylonite_detect_lcd_panel(); 204 205 /* GPIO pin assignment */ 206 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9); 207 gpio_debug_led1 = mfp_to_gpio(MFP_PIN_GPIO1_2); 208 gpio_debug_led2 = mfp_to_gpio(MFP_PIN_GPIO4_2); 209 210 /* WM9713 IRQ */ 211 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15); 212 } 213}