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/i2c/pxa-i2c.h>
21#include <linux/platform_data/pca953x.h>
22#include <linux/gpio.h>
23
24#include <mach/pxa300.h>
25#include <mach/zylonite.h>
26
27#include "generic.h"
28
29/* PXA300/PXA310 common configurations */
30static mfp_cfg_t common_mfp_cfg[] __initdata = {
31	/* LCD */
32	GPIO54_LCD_LDD_0,
33	GPIO55_LCD_LDD_1,
34	GPIO56_LCD_LDD_2,
35	GPIO57_LCD_LDD_3,
36	GPIO58_LCD_LDD_4,
37	GPIO59_LCD_LDD_5,
38	GPIO60_LCD_LDD_6,
39	GPIO61_LCD_LDD_7,
40	GPIO62_LCD_LDD_8,
41	GPIO63_LCD_LDD_9,
42	GPIO64_LCD_LDD_10,
43	GPIO65_LCD_LDD_11,
44	GPIO66_LCD_LDD_12,
45	GPIO67_LCD_LDD_13,
46	GPIO68_LCD_LDD_14,
47	GPIO69_LCD_LDD_15,
48	GPIO70_LCD_LDD_16,
49	GPIO71_LCD_LDD_17,
50	GPIO72_LCD_FCLK,
51	GPIO73_LCD_LCLK,
52	GPIO74_LCD_PCLK,
53	GPIO75_LCD_BIAS,
54	GPIO76_LCD_VSYNC,
55	GPIO127_LCD_CS_N,
56	GPIO20_PWM3_OUT,	/* backlight */
57
58	/* BTUART */
59	GPIO111_UART2_RTS,
60	GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
61	GPIO113_UART2_TXD,
62	GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
63
64	/* STUART */
65	GPIO109_UART3_TXD,
66	GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
67
68	/* AC97 */
69	GPIO23_AC97_nACRESET,
70	GPIO24_AC97_SYSCLK,
71	GPIO29_AC97_BITCLK,
72	GPIO25_AC97_SDATA_IN_0,
73	GPIO27_AC97_SDATA_OUT,
74	GPIO28_AC97_SYNC,
75	GPIO17_GPIO,	/* SDATA_IN_1 but unused - configure to GPIO */
76
77	/* SSP3 */
78	GPIO91_SSP3_SCLK,
79	GPIO92_SSP3_FRM,
80	GPIO93_SSP3_TXD,
81	GPIO94_SSP3_RXD,
82
83	/* WM9713 IRQ */
84	GPIO26_GPIO,
85
86	/* Keypad */
87	GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
88	GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
89	GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
90	GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
91	GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
92	GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
93	GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
94	GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
95	GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
96	GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
97	GPIO121_KP_MKOUT_0,
98	GPIO122_KP_MKOUT_1,
99	GPIO123_KP_MKOUT_2,
100	GPIO124_KP_MKOUT_3,
101	GPIO125_KP_MKOUT_4,
102	GPIO4_2_KP_MKOUT_5,
103	GPIO5_2_KP_MKOUT_6,
104	GPIO6_2_KP_MKOUT_7,
105
106	/* MMC1 */
107	GPIO3_MMC1_DAT0,
108	GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
109	GPIO5_MMC1_DAT2,
110	GPIO6_MMC1_DAT3,
111	GPIO7_MMC1_CLK,
112	GPIO8_MMC1_CMD,	/* CMD0 for slot 0 */
113	GPIO15_GPIO,	/* CMD1 default as GPIO for slot 0 */
114
115	/* MMC2 */
116	GPIO9_MMC2_DAT0,
117	GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
118	GPIO11_MMC2_DAT2,
119	GPIO12_MMC2_DAT3,
120	GPIO13_MMC2_CLK,
121	GPIO14_MMC2_CMD,
122
123	/* USB Host */
124	GPIO0_2_USBH_PEN,
125	GPIO1_2_USBH_PWR,
126
127	/* Standard I2C */
128	GPIO21_I2C_SCL,
129	GPIO22_I2C_SDA,
130
131	/* GPIO */
132	GPIO18_GPIO | MFP_PULL_HIGH,	/* GPIO Expander #0 INT_N */
133	GPIO19_GPIO | MFP_PULL_HIGH,	/* GPIO Expander #1 INT_N */
134};
135
136static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
137	/* FFUART */
138	GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
139	GPIO31_UART1_TXD,
140	GPIO32_UART1_CTS,
141	GPIO37_UART1_RTS,
142	GPIO33_UART1_DCD,
143	GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
144	GPIO35_UART1_RI,
145	GPIO36_UART1_DTR,
146
147	/* Ethernet */
148	GPIO2_nCS3,
149	GPIO99_GPIO,
150};
151
152static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
153	/* FFUART */
154	GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
155	GPIO100_UART1_TXD,
156	GPIO101_UART1_CTS,
157	GPIO106_UART1_RTS,
158
159	/* Ethernet */
160	GPIO2_nCS3,
161	GPIO102_GPIO,
162
163	/* MMC3 */
164	GPIO7_2_MMC3_DAT0,
165	GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
166	GPIO9_2_MMC3_DAT2,
167	GPIO10_2_MMC3_DAT3,
168	GPIO103_MMC3_CLK,
169	GPIO105_MMC3_CMD,
170};
171
172#define NUM_LCD_DETECT_PINS	7
173
174static int lcd_detect_pins[] __initdata = {
175	MFP_PIN_GPIO71,	/* LCD_LDD_17 - ORIENT */
176	MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
177	MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
178	MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
179	MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
180	MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
181	MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
182};
183
184static void __init zylonite_detect_lcd_panel(void)
185{
186	unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
187	int i, gpio, id = 0;
188
189	/* save the original MFP settings of these pins and configure
190	 * them as GPIO Input, DS01X, Pull Neither, Edge Clear
191	 */
192	for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
193		mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
194		pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
195	}
196
197	for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
198		id = id << 1;
199		gpio = mfp_to_gpio(lcd_detect_pins[i]);
200		gpio_request(gpio, "LCD_ID_PINS");
201		gpio_direction_input(gpio);
202
203		if (gpio_get_value(gpio))
204			id = id | 0x1;
205		gpio_free(gpio);
206	}
207
208	/* lcd id, flush out bit 1 */
209	lcd_id = id & 0x3d;
210
211	/* lcd orientation, portrait or landscape */
212	lcd_orientation = (id >> 6) & 0x1;
213
214	/* restore the original MFP settings */
215	for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
216		pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
217}
218
219#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
220static struct pca953x_platform_data gpio_exp[] = {
221	[0] = {
222		.gpio_base	= 128,
223	},
224	[1] = {
225		.gpio_base	= 144,
226	},
227};
228
229static struct i2c_board_info zylonite_i2c_board_info[] = {
230	{
231		.type		= "pca9539",
232		.addr		= 0x74,
233		.platform_data	= &gpio_exp[0],
234		.irq		= PXA_GPIO_TO_IRQ(18),
235	}, {
236		.type		= "pca9539",
237		.addr		= 0x75,
238		.platform_data	= &gpio_exp[1],
239		.irq		= PXA_GPIO_TO_IRQ(19),
240	},
241};
242
243static void __init zylonite_init_i2c(void)
244{
245	pxa_set_i2c_info(NULL);
246	i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
247}
248#else
249static inline void zylonite_init_i2c(void) {}
250#endif
251
252void __init zylonite_pxa300_init(void)
253{
254	if (cpu_is_pxa300() || cpu_is_pxa310()) {
255		/* initialize MFP */
256		pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
257
258		/* detect LCD panel */
259		zylonite_detect_lcd_panel();
260
261		/* WM9713 IRQ */
262		wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
263
264		zylonite_init_i2c();
265	}
266
267	if (cpu_is_pxa300()) {
268		pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
269		gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
270	}
271
272	if (cpu_is_pxa310()) {
273		pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
274		gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
275	}
276
277	/* GPIOs for Debug LEDs */
278	gpio_debug_led1 = EXT_GPIO(25);
279	gpio_debug_led2 = EXT_GPIO(26);
280}
281