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 #include <linux/soc/pxa/cpu.h>
21
22 #include "pxa300.h"
23 #include "devices.h"
24 #include "zylonite.h"
25
26 #include "generic.h"
27
28 /* PXA300/PXA310 common configurations */
29 static mfp_cfg_t common_mfp_cfg[] __initdata = {
30 /* LCD */
31 GPIO54_LCD_LDD_0,
32 GPIO55_LCD_LDD_1,
33 GPIO56_LCD_LDD_2,
34 GPIO57_LCD_LDD_3,
35 GPIO58_LCD_LDD_4,
36 GPIO59_LCD_LDD_5,
37 GPIO60_LCD_LDD_6,
38 GPIO61_LCD_LDD_7,
39 GPIO62_LCD_LDD_8,
40 GPIO63_LCD_LDD_9,
41 GPIO64_LCD_LDD_10,
42 GPIO65_LCD_LDD_11,
43 GPIO66_LCD_LDD_12,
44 GPIO67_LCD_LDD_13,
45 GPIO68_LCD_LDD_14,
46 GPIO69_LCD_LDD_15,
47 GPIO70_LCD_LDD_16,
48 GPIO71_LCD_LDD_17,
49 GPIO72_LCD_FCLK,
50 GPIO73_LCD_LCLK,
51 GPIO74_LCD_PCLK,
52 GPIO75_LCD_BIAS,
53 GPIO76_LCD_VSYNC,
54 GPIO127_LCD_CS_N,
55 GPIO20_PWM3_OUT, /* backlight */
56
57 /* BTUART */
58 GPIO111_UART2_RTS,
59 GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
60 GPIO113_UART2_TXD,
61 GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
62
63 /* STUART */
64 GPIO109_UART3_TXD,
65 GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
66
67 /* AC97 */
68 GPIO23_AC97_nACRESET,
69 GPIO24_AC97_SYSCLK,
70 GPIO29_AC97_BITCLK,
71 GPIO25_AC97_SDATA_IN_0,
72 GPIO27_AC97_SDATA_OUT,
73 GPIO28_AC97_SYNC,
74 GPIO17_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */
75
76 /* SSP3 */
77 GPIO91_SSP3_SCLK,
78 GPIO92_SSP3_FRM,
79 GPIO93_SSP3_TXD,
80 GPIO94_SSP3_RXD,
81
82 /* WM9713 IRQ */
83 GPIO26_GPIO,
84
85 /* Keypad */
86 GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
87 GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
88 GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
89 GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
90 GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
91 GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
92 GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
93 GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
94 GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
95 GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
96 GPIO121_KP_MKOUT_0,
97 GPIO122_KP_MKOUT_1,
98 GPIO123_KP_MKOUT_2,
99 GPIO124_KP_MKOUT_3,
100 GPIO125_KP_MKOUT_4,
101 GPIO4_2_KP_MKOUT_5,
102 GPIO5_2_KP_MKOUT_6,
103 GPIO6_2_KP_MKOUT_7,
104
105 /* MMC1 */
106 GPIO3_MMC1_DAT0,
107 GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
108 GPIO5_MMC1_DAT2,
109 GPIO6_MMC1_DAT3,
110 GPIO7_MMC1_CLK,
111 GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
112 GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */
113
114 /* MMC2 */
115 GPIO9_MMC2_DAT0,
116 GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
117 GPIO11_MMC2_DAT2,
118 GPIO12_MMC2_DAT3,
119 GPIO13_MMC2_CLK,
120 GPIO14_MMC2_CMD,
121
122 /* USB Host */
123 GPIO0_2_USBH_PEN,
124 GPIO1_2_USBH_PWR,
125
126 /* Standard I2C */
127 GPIO21_I2C_SCL,
128 GPIO22_I2C_SDA,
129
130 /* GPIO */
131 GPIO18_GPIO | MFP_PULL_HIGH, /* GPIO Expander #0 INT_N */
132 GPIO19_GPIO | MFP_PULL_HIGH, /* GPIO Expander #1 INT_N */
133 };
134
135 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
136 /* FFUART */
137 GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
138 GPIO31_UART1_TXD,
139 GPIO32_UART1_CTS,
140 GPIO37_UART1_RTS,
141 GPIO33_UART1_DCD,
142 GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
143 GPIO35_UART1_RI,
144 GPIO36_UART1_DTR,
145
146 /* Ethernet */
147 GPIO2_nCS3,
148 GPIO99_GPIO,
149 };
150
151 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
152 /* FFUART */
153 GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
154 GPIO100_UART1_TXD,
155 GPIO101_UART1_CTS,
156 GPIO106_UART1_RTS,
157
158 /* Ethernet */
159 GPIO2_nCS3,
160 GPIO102_GPIO,
161
162 /* MMC3 */
163 GPIO7_2_MMC3_DAT0,
164 GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
165 GPIO9_2_MMC3_DAT2,
166 GPIO10_2_MMC3_DAT3,
167 GPIO103_MMC3_CLK,
168 GPIO105_MMC3_CMD,
169 };
170
171 #define NUM_LCD_DETECT_PINS 7
172
173 static int lcd_detect_pins[] __initdata = {
174 MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
175 MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
176 MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */
177 MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */
178 MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */
179 MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */
180 MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */
181 };
182
zylonite_detect_lcd_panel(void)183 static void __init zylonite_detect_lcd_panel(void)
184 {
185 unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
186 int i, gpio, id = 0;
187
188 /* save the original MFP settings of these pins and configure
189 * them as GPIO Input, DS01X, Pull Neither, Edge Clear
190 */
191 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
192 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
193 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
194 }
195
196 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
197 id = id << 1;
198 gpio = mfp_to_gpio(lcd_detect_pins[i]);
199 gpio_request(gpio, "LCD_ID_PINS");
200 gpio_direction_input(gpio);
201
202 if (gpio_get_value(gpio))
203 id = id | 0x1;
204 gpio_free(gpio);
205 }
206
207 /* lcd id, flush out bit 1 */
208 lcd_id = id & 0x3d;
209
210 /* lcd orientation, portrait or landscape */
211 lcd_orientation = (id >> 6) & 0x1;
212
213 /* restore the original MFP settings */
214 for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
215 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
216 }
217
218 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
219 static struct pca953x_platform_data gpio_exp[] = {
220 [0] = {
221 .gpio_base = 128,
222 },
223 [1] = {
224 .gpio_base = 144,
225 },
226 };
227
228 static struct i2c_board_info zylonite_i2c_board_info[] = {
229 {
230 .type = "pca9539",
231 .dev_name = "pca9539-a",
232 .addr = 0x74,
233 .platform_data = &gpio_exp[0],
234 .irq = PXA_GPIO_TO_IRQ(18),
235 }, {
236 .type = "pca9539",
237 .dev_name = "pca9539-b",
238 .addr = 0x75,
239 .platform_data = &gpio_exp[1],
240 .irq = PXA_GPIO_TO_IRQ(19),
241 },
242 };
243
zylonite_init_i2c(void)244 static void __init zylonite_init_i2c(void)
245 {
246 pxa_set_i2c_info(NULL);
247 i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
248 }
249 #else
zylonite_init_i2c(void)250 static inline void zylonite_init_i2c(void) {}
251 #endif
252
zylonite_pxa300_init(void)253 void __init zylonite_pxa300_init(void)
254 {
255 if (cpu_is_pxa300() || cpu_is_pxa310()) {
256 /* initialize MFP */
257 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
258
259 /* detect LCD panel */
260 zylonite_detect_lcd_panel();
261
262 /* WM9713 IRQ */
263 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
264
265 zylonite_init_i2c();
266 }
267
268 if (cpu_is_pxa300()) {
269 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
270 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
271 }
272
273 if (cpu_is_pxa310()) {
274 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
275 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
276 }
277
278 /* GPIOs for Debug LEDs */
279 gpio_debug_led1 = EXT_GPIO(25);
280 gpio_debug_led2 = EXT_GPIO(26);
281 }
282