GNU Linux-libre 4.19.264-gnu1
[releases.git] / arch / arm / mach-pxa / zylonite_pxa300.c
1 /*
2  * linux/arch/arm/mach-pxa/zylonite_pxa300.c
3  *
4  * PXA300/PXA310 specific support code for the
5  * PXA3xx Development Platform (aka Zylonite)
6  *
7  * Copyright (C) 2007 Marvell Internation Ltd.
8  * 2007-08-21: eric miao <eric.miao@marvell.com>
9  *             initial version
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License version 2 as
13  * published by the Free Software Foundation.
14  */
15
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/i2c.h>
20 #include <linux/platform_data/i2c-pxa.h>
21 #include <linux/platform_data/pca953x.h>
22 #include <linux/gpio.h>
23
24 #include "pxa300.h"
25 #include "devices.h"
26 #include "zylonite.h"
27
28 #include "generic.h"
29
30 /* PXA300/PXA310 common configurations */
31 static mfp_cfg_t common_mfp_cfg[] __initdata = {
32         /* LCD */
33         GPIO54_LCD_LDD_0,
34         GPIO55_LCD_LDD_1,
35         GPIO56_LCD_LDD_2,
36         GPIO57_LCD_LDD_3,
37         GPIO58_LCD_LDD_4,
38         GPIO59_LCD_LDD_5,
39         GPIO60_LCD_LDD_6,
40         GPIO61_LCD_LDD_7,
41         GPIO62_LCD_LDD_8,
42         GPIO63_LCD_LDD_9,
43         GPIO64_LCD_LDD_10,
44         GPIO65_LCD_LDD_11,
45         GPIO66_LCD_LDD_12,
46         GPIO67_LCD_LDD_13,
47         GPIO68_LCD_LDD_14,
48         GPIO69_LCD_LDD_15,
49         GPIO70_LCD_LDD_16,
50         GPIO71_LCD_LDD_17,
51         GPIO72_LCD_FCLK,
52         GPIO73_LCD_LCLK,
53         GPIO74_LCD_PCLK,
54         GPIO75_LCD_BIAS,
55         GPIO76_LCD_VSYNC,
56         GPIO127_LCD_CS_N,
57         GPIO20_PWM3_OUT,        /* backlight */
58
59         /* BTUART */
60         GPIO111_UART2_RTS,
61         GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
62         GPIO113_UART2_TXD,
63         GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
64
65         /* STUART */
66         GPIO109_UART3_TXD,
67         GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
68
69         /* AC97 */
70         GPIO23_AC97_nACRESET,
71         GPIO24_AC97_SYSCLK,
72         GPIO29_AC97_BITCLK,
73         GPIO25_AC97_SDATA_IN_0,
74         GPIO27_AC97_SDATA_OUT,
75         GPIO28_AC97_SYNC,
76         GPIO17_GPIO,    /* SDATA_IN_1 but unused - configure to GPIO */
77
78         /* SSP3 */
79         GPIO91_SSP3_SCLK,
80         GPIO92_SSP3_FRM,
81         GPIO93_SSP3_TXD,
82         GPIO94_SSP3_RXD,
83
84         /* WM9713 IRQ */
85         GPIO26_GPIO,
86
87         /* Keypad */
88         GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
89         GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
90         GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
91         GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
92         GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
93         GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
94         GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
95         GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
96         GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
97         GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
98         GPIO121_KP_MKOUT_0,
99         GPIO122_KP_MKOUT_1,
100         GPIO123_KP_MKOUT_2,
101         GPIO124_KP_MKOUT_3,
102         GPIO125_KP_MKOUT_4,
103         GPIO4_2_KP_MKOUT_5,
104         GPIO5_2_KP_MKOUT_6,
105         GPIO6_2_KP_MKOUT_7,
106
107         /* MMC1 */
108         GPIO3_MMC1_DAT0,
109         GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
110         GPIO5_MMC1_DAT2,
111         GPIO6_MMC1_DAT3,
112         GPIO7_MMC1_CLK,
113         GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
114         GPIO15_GPIO,    /* CMD1 default as GPIO for slot 0 */
115
116         /* MMC2 */
117         GPIO9_MMC2_DAT0,
118         GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
119         GPIO11_MMC2_DAT2,
120         GPIO12_MMC2_DAT3,
121         GPIO13_MMC2_CLK,
122         GPIO14_MMC2_CMD,
123
124         /* USB Host */
125         GPIO0_2_USBH_PEN,
126         GPIO1_2_USBH_PWR,
127
128         /* Standard I2C */
129         GPIO21_I2C_SCL,
130         GPIO22_I2C_SDA,
131
132         /* GPIO */
133         GPIO18_GPIO | MFP_PULL_HIGH,    /* GPIO Expander #0 INT_N */
134         GPIO19_GPIO | MFP_PULL_HIGH,    /* GPIO Expander #1 INT_N */
135 };
136
137 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
138         /* FFUART */
139         GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
140         GPIO31_UART1_TXD,
141         GPIO32_UART1_CTS,
142         GPIO37_UART1_RTS,
143         GPIO33_UART1_DCD,
144         GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
145         GPIO35_UART1_RI,
146         GPIO36_UART1_DTR,
147
148         /* Ethernet */
149         GPIO2_nCS3,
150         GPIO99_GPIO,
151 };
152
153 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
154         /* FFUART */
155         GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
156         GPIO100_UART1_TXD,
157         GPIO101_UART1_CTS,
158         GPIO106_UART1_RTS,
159
160         /* Ethernet */
161         GPIO2_nCS3,
162         GPIO102_GPIO,
163
164         /* MMC3 */
165         GPIO7_2_MMC3_DAT0,
166         GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
167         GPIO9_2_MMC3_DAT2,
168         GPIO10_2_MMC3_DAT3,
169         GPIO103_MMC3_CLK,
170         GPIO105_MMC3_CMD,
171 };
172
173 #define NUM_LCD_DETECT_PINS     7
174
175 static int lcd_detect_pins[] __initdata = {
176         MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
177         MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
178         MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
179         MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
180         MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
181         MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
182         MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
183 };
184
185 static void __init zylonite_detect_lcd_panel(void)
186 {
187         unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
188         int i, gpio, id = 0;
189
190         /* save the original MFP settings of these pins and configure
191          * them as GPIO Input, DS01X, Pull Neither, Edge Clear
192          */
193         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
194                 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
195                 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
196         }
197
198         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
199                 id = id << 1;
200                 gpio = mfp_to_gpio(lcd_detect_pins[i]);
201                 gpio_request(gpio, "LCD_ID_PINS");
202                 gpio_direction_input(gpio);
203
204                 if (gpio_get_value(gpio))
205                         id = id | 0x1;
206                 gpio_free(gpio);
207         }
208
209         /* lcd id, flush out bit 1 */
210         lcd_id = id & 0x3d;
211
212         /* lcd orientation, portrait or landscape */
213         lcd_orientation = (id >> 6) & 0x1;
214
215         /* restore the original MFP settings */
216         for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
217                 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
218 }
219
220 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
221 static struct pca953x_platform_data gpio_exp[] = {
222         [0] = {
223                 .gpio_base      = 128,
224         },
225         [1] = {
226                 .gpio_base      = 144,
227         },
228 };
229
230 static struct i2c_board_info zylonite_i2c_board_info[] = {
231         {
232                 .type           = "pca9539",
233                 .addr           = 0x74,
234                 .platform_data  = &gpio_exp[0],
235                 .irq            = PXA_GPIO_TO_IRQ(18),
236         }, {
237                 .type           = "pca9539",
238                 .addr           = 0x75,
239                 .platform_data  = &gpio_exp[1],
240                 .irq            = PXA_GPIO_TO_IRQ(19),
241         },
242 };
243
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
250 static inline void zylonite_init_i2c(void) {}
251 #endif
252
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 }