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 #include <linux/can/platform/sja1000.h>
23
24 #include <asm/mach/arch.h>
25
26 #include <mach/common.h>
27 #include <mach/iomux-mx27.h>
28 #include <mach/hardware.h>
29
30 #include "devices-imx27.h"
31
32 static const int pcm970_pins[] __initconst = {
33 /* SDHC */
34 PB4_PF_SD2_D0,
35 PB5_PF_SD2_D1,
36 PB6_PF_SD2_D2,
37 PB7_PF_SD2_D3,
38 PB8_PF_SD2_CMD,
39 PB9_PF_SD2_CLK,
40 /* display */
41 PA5_PF_LSCLK,
42 PA6_PF_LD0,
43 PA7_PF_LD1,
44 PA8_PF_LD2,
45 PA9_PF_LD3,
46 PA10_PF_LD4,
47 PA11_PF_LD5,
48 PA12_PF_LD6,
49 PA13_PF_LD7,
50 PA14_PF_LD8,
51 PA15_PF_LD9,
52 PA16_PF_LD10,
53 PA17_PF_LD11,
54 PA18_PF_LD12,
55 PA19_PF_LD13,
56 PA20_PF_LD14,
57 PA21_PF_LD15,
58 PA22_PF_LD16,
59 PA23_PF_LD17,
60 PA24_PF_REV,
61 PA25_PF_CLS,
62 PA26_PF_PS,
63 PA27_PF_SPL_SPR,
64 PA28_PF_HSYNC,
65 PA29_PF_VSYNC,
66 PA30_PF_CONTRAST,
67 PA31_PF_OE_ACD,
68 /*
69 * it seems the data line misses a pullup, so we must enable
70 * the internal pullup as a local workaround
71 */
72 PD17_PF_I2C_DATA | GPIO_PUEN,
73 PD18_PF_I2C_CLK,
74 /* Camera */
75 PB10_PF_CSI_D0,
76 PB11_PF_CSI_D1,
77 PB12_PF_CSI_D2,
78 PB13_PF_CSI_D3,
79 PB14_PF_CSI_D4,
80 PB15_PF_CSI_MCLK,
81 PB16_PF_CSI_PIXCLK,
82 PB17_PF_CSI_D5,
83 PB18_PF_CSI_D6,
84 PB19_PF_CSI_D7,
85 PB20_PF_CSI_VSYNC,
86 PB21_PF_CSI_HSYNC,
87 };
88
pcm970_sdhc2_get_ro(struct device * dev)89 static int pcm970_sdhc2_get_ro(struct device *dev)
90 {
91 return gpio_get_value(GPIO_PORTC + 28);
92 }
93
pcm970_sdhc2_init(struct device * dev,irq_handler_t detect_irq,void * data)94 static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
95 {
96 int ret;
97
98 ret = request_irq(IRQ_GPIOC(29), detect_irq, IRQF_TRIGGER_FALLING,
99 "imx-mmc-detect", data);
100 if (ret)
101 return ret;
102
103 ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
104 if (ret) {
105 free_irq(IRQ_GPIOC(29), data);
106 return ret;
107 }
108
109 gpio_direction_input(GPIO_PORTC + 28);
110
111 return 0;
112 }
113
pcm970_sdhc2_exit(struct device * dev,void * data)114 static void pcm970_sdhc2_exit(struct device *dev, void *data)
115 {
116 free_irq(IRQ_GPIOC(29), data);
117 gpio_free(GPIO_PORTC + 28);
118 }
119
120 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
121 .get_ro = pcm970_sdhc2_get_ro,
122 .init = pcm970_sdhc2_init,
123 .exit = pcm970_sdhc2_exit,
124 };
125
126 static struct imx_fb_videomode pcm970_modes[] = {
127 {
128 .mode = {
129 .name = "Sharp-LQ035Q7",
130 .refresh = 60,
131 .xres = 240,
132 .yres = 320,
133 .pixclock = 188679, /* in ps (5.3MHz) */
134 .hsync_len = 7,
135 .left_margin = 5,
136 .right_margin = 16,
137 .vsync_len = 1,
138 .upper_margin = 7,
139 .lower_margin = 9,
140 },
141 /*
142 * - HSYNC active high
143 * - VSYNC active high
144 * - clk notenabled while idle
145 * - clock not inverted
146 * - data not inverted
147 * - data enable low active
148 * - enable sharp mode
149 */
150 .pcr = 0xF00080C0,
151 .bpp = 16,
152 }, {
153 .mode = {
154 .name = "TX090",
155 .refresh = 60,
156 .xres = 240,
157 .yres = 320,
158 .pixclock = 38255,
159 .left_margin = 144,
160 .right_margin = 0,
161 .upper_margin = 7,
162 .lower_margin = 40,
163 .hsync_len = 96,
164 .vsync_len = 1,
165 },
166 /*
167 * - HSYNC active low (1 << 22)
168 * - VSYNC active low (1 << 23)
169 * - clk notenabled while idle
170 * - clock not inverted
171 * - data not inverted
172 * - data enable low active
173 * - enable sharp mode
174 */
175 .pcr = 0xF0008080 | (1<<22) | (1<<23) | (1<<19),
176 .bpp = 32,
177 },
178 };
179
180 static const struct imx_fb_platform_data pcm038_fb_data __initconst = {
181 .mode = pcm970_modes,
182 .num_modes = ARRAY_SIZE(pcm970_modes),
183
184 .pwmr = 0x00A903FF,
185 .lscr1 = 0x00120300,
186 .dmacr = 0x00020010,
187 };
188
189 static struct resource pcm970_sja1000_resources[] = {
190 {
191 .start = MX27_CS4_BASE_ADDR,
192 .end = MX27_CS4_BASE_ADDR + 0x100 - 1,
193 .flags = IORESOURCE_MEM,
194 }, {
195 .start = IRQ_GPIOE(19),
196 .end = IRQ_GPIOE(19),
197 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
198 },
199 };
200
201 static struct sja1000_platform_data pcm970_sja1000_platform_data = {
202 .osc_freq = 16000000,
203 .ocr = OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL,
204 .cdr = CDR_CBP,
205 };
206
207 static struct platform_device pcm970_sja1000 = {
208 .name = "sja1000_platform",
209 .dev = {
210 .platform_data = &pcm970_sja1000_platform_data,
211 },
212 .resource = pcm970_sja1000_resources,
213 .num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
214 };
215
216 /*
217 * system init for baseboard usage. Will be called by pcm038 init.
218 *
219 * Add platform devices present on this baseboard and init
220 * them from CPU side as far as required to use them later on
221 */
pcm970_baseboard_init(void)222 void __init pcm970_baseboard_init(void)
223 {
224 mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
225 "PCM970");
226
227 imx27_add_imx_fb(&pcm038_fb_data);
228 mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN);
229 imx27_add_mxc_mmc(1, &sdhc_pdata);
230 platform_device_register(&pcm970_sja1000);
231 }
232