1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-pxa/zylonite_pxa320.c
5 * PXA320 specific support code for the
6 * PXA3xx Development Platform (aka Zylonite)
8 * Copyright (C) 2007 Marvell Internation Ltd.
9 * 2007-08-21: eric miao <eric.miao@marvell.com>
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>
24 static mfp_cfg_t mfp_cfg[] __initdata = {
50 GPIO14_PWM3_OUT, /* backlight */
53 GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL,
57 GPIO45_UART1_DSR | MFP_LPM_EDGE_FALL,
64 GPIO35_AC97_SDATA_IN_0,
65 GPIO37_AC97_SDATA_OUT,
69 GPIO36_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */
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,
110 GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
114 GPIO23_MMC1_CMD,/* CMD0 for slot 0 */
115 GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */
119 GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
130 GPIO1_2_GPIO | MFP_LPM_DRIVE_HIGH,
131 GPIO4_2_GPIO | MFP_LPM_DRIVE_HIGH,
134 #define NUM_LCD_DETECT_PINS 7
136 static 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] */
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
153 static 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 */
161 static void __init zylonite_detect_lcd_panel(void)
163 unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)];
166 /* save the original MFP settings of these pins and configure them
167 * as GPIO Input, DS01X, Pull Neither, Edge Clear
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]);
174 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
176 gpio = mfp_to_gpio(lcd_detect_pins[i]);
177 gpio_request(gpio, "LCD_ID_PINS");
178 gpio_direction_input(gpio);
180 if (gpio_get_value(gpio))
185 /* lcd id, flush out bit 1 */
188 /* lcd orientation, portrait or landscape */
189 lcd_orientation = (id >> 6) & 0x1;
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]);
196 void __init zylonite_pxa320_init(void)
198 if (cpu_is_pxa320()) {
200 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg));
202 /* detect LCD panel */
203 zylonite_detect_lcd_panel();
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);
211 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15);