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
24 static 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
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] */
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
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 */
157 0x8445, /* AF5 */
158 0x8445, /* AF5 */
159 };
160
zylonite_detect_lcd_panel(void)161 static 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
zylonite_pxa320_init(void)196 void __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 }
214
