1 /*
2 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
16 * MA 02110-1301, USA.
17 */
18
19 #include <linux/gpio.h>
20 #include <linux/irq.h>
21 #include <linux/platform_device.h>
22
23 #include <asm/mach/arch.h>
24
25 #include <mach/common.h>
26 #include <mach/iomux.h>
27 #include <mach/imxfb.h>
28 #include <mach/hardware.h>
29 #include <mach/mmc.h>
30
31 #include "devices.h"
32
33 static int pcm970_pins[] = {
34 /* SDHC */
35 PB4_PF_SD2_D0,
36 PB5_PF_SD2_D1,
37 PB6_PF_SD2_D2,
38 PB7_PF_SD2_D3,
39 PB8_PF_SD2_CMD,
40 PB9_PF_SD2_CLK,
41 GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN, /* card detect */
42 /* display */
43 PA5_PF_LSCLK,
44 PA6_PF_LD0,
45 PA7_PF_LD1,
46 PA8_PF_LD2,
47 PA9_PF_LD3,
48 PA10_PF_LD4,
49 PA11_PF_LD5,
50 PA12_PF_LD6,
51 PA13_PF_LD7,
52 PA14_PF_LD8,
53 PA15_PF_LD9,
54 PA16_PF_LD10,
55 PA17_PF_LD11,
56 PA18_PF_LD12,
57 PA19_PF_LD13,
58 PA20_PF_LD14,
59 PA21_PF_LD15,
60 PA22_PF_LD16,
61 PA23_PF_LD17,
62 PA24_PF_REV,
63 PA25_PF_CLS,
64 PA26_PF_PS,
65 PA27_PF_SPL_SPR,
66 PA28_PF_HSYNC,
67 PA29_PF_VSYNC,
68 PA30_PF_CONTRAST,
69 PA31_PF_OE_ACD,
70 /*
71 * it seems the data line misses a pullup, so we must enable
72 * the internal pullup as a local workaround
73 */
74 PD17_PF_I2C_DATA | GPIO_PUEN,
75 PD18_PF_I2C_CLK,
76 /* Camera */
77 PB10_PF_CSI_D0,
78 PB11_PF_CSI_D1,
79 PB12_PF_CSI_D2,
80 PB13_PF_CSI_D3,
81 PB14_PF_CSI_D4,
82 PB15_PF_CSI_MCLK,
83 PB16_PF_CSI_PIXCLK,
84 PB17_PF_CSI_D5,
85 PB18_PF_CSI_D6,
86 PB19_PF_CSI_D7,
87 PB20_PF_CSI_VSYNC,
88 PB21_PF_CSI_HSYNC,
89 };
90
91 static int pcm970_sdhc2_get_ro(struct device *dev)
92 {
93 return gpio_get_value(GPIO_PORTC + 28);
94 }
95
96 static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
97 {
98 int ret;
99
100 ret = request_irq(IRQ_GPIOC(29), detect_irq, IRQF_TRIGGER_FALLING,
101 "imx-mmc-detect", data);
102 if (ret)
103 return ret;
104
105 ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
106 if (ret) {
107 free_irq(IRQ_GPIOC(29), data);
108 return ret;
109 }
110
111 gpio_direction_input(GPIO_PORTC + 28);
112
113 return 0;
114 }
115
116 static void pcm970_sdhc2_exit(struct device *dev, void *data)
117 {
118 free_irq(IRQ_GPIOC(29), data);
119 gpio_free(GPIO_PORTC + 28);
120 }
121
122 static struct imxmmc_platform_data sdhc_pdata = {
123 .get_ro = pcm970_sdhc2_get_ro,
124 .init = pcm970_sdhc2_init,
125 .exit = pcm970_sdhc2_exit,
126 };
127
128 /*
129 * Connected is a portrait Sharp-QVGA display
130 * of type: LQ035Q7DH06
131 */
132 static struct imx_fb_platform_data pcm038_fb_data = {
133 .pixclock = 188679, /* in ps (5.3MHz) */
134 .xres = 240,
135 .yres = 320,
136
137 .bpp = 16,
138 .hsync_len = 7,
139 .left_margin = 5,
140 .right_margin = 16,
141
142 .vsync_len = 1,
143 .upper_margin = 7,
144 .lower_margin = 9,
145 .fixed_screen_cpu = 0,
146
147 /*
148 * - HSYNC active high
149 * - VSYNC active high
150 * - clk notenabled while idle
151 * - clock not inverted
152 * - data not inverted
153 * - data enable low active
154 * - enable sharp mode
155 */
156 .pcr = 0xFA0080C0,
157 .pwmr = 0x00A903FF,
158 .lscr1 = 0x00120300,
159 .dmacr = 0x00020010,
160 };
161
162 /*
163 * system init for baseboard usage. Will be called by pcm038 init.
164 *
165 * Add platform devices present on this baseboard and init
166 * them from CPU side as far as required to use them later on
167 */
168 void __init pcm970_baseboard_init(void)
169 {
170 mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
171 "PCM970");
172
173 mxc_register_device(&mxc_fb_device, &pcm038_fb_data);
174 mxc_register_device(&mxc_sdhc_device1, &sdhc_pdata);
175 }
176
|
This page was automatically generated by the
LXR engine.
|