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Linux/arch/arm/mach-imx/pcm970-baseboard.c

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  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 "common.h"
 27 #include "devices-imx27.h"
 28 #include "hardware.h"
 29 #include "iomux-mx27.h"
 30 
 31 static const int pcm970_pins[] __initconst = {
 32         /* SDHC */
 33         PB4_PF_SD2_D0,
 34         PB5_PF_SD2_D1,
 35         PB6_PF_SD2_D2,
 36         PB7_PF_SD2_D3,
 37         PB8_PF_SD2_CMD,
 38         PB9_PF_SD2_CLK,
 39         /* display */
 40         PA5_PF_LSCLK,
 41         PA6_PF_LD0,
 42         PA7_PF_LD1,
 43         PA8_PF_LD2,
 44         PA9_PF_LD3,
 45         PA10_PF_LD4,
 46         PA11_PF_LD5,
 47         PA12_PF_LD6,
 48         PA13_PF_LD7,
 49         PA14_PF_LD8,
 50         PA15_PF_LD9,
 51         PA16_PF_LD10,
 52         PA17_PF_LD11,
 53         PA18_PF_LD12,
 54         PA19_PF_LD13,
 55         PA20_PF_LD14,
 56         PA21_PF_LD15,
 57         PA22_PF_LD16,
 58         PA23_PF_LD17,
 59         PA24_PF_REV,
 60         PA25_PF_CLS,
 61         PA26_PF_PS,
 62         PA27_PF_SPL_SPR,
 63         PA28_PF_HSYNC,
 64         PA29_PF_VSYNC,
 65         PA30_PF_CONTRAST,
 66         PA31_PF_OE_ACD,
 67         /*
 68          * it seems the data line misses a pullup, so we must enable
 69          * the internal pullup as a local workaround
 70          */
 71         PD17_PF_I2C_DATA | GPIO_PUEN,
 72         PD18_PF_I2C_CLK,
 73         /* Camera */
 74         PB10_PF_CSI_D0,
 75         PB11_PF_CSI_D1,
 76         PB12_PF_CSI_D2,
 77         PB13_PF_CSI_D3,
 78         PB14_PF_CSI_D4,
 79         PB15_PF_CSI_MCLK,
 80         PB16_PF_CSI_PIXCLK,
 81         PB17_PF_CSI_D5,
 82         PB18_PF_CSI_D6,
 83         PB19_PF_CSI_D7,
 84         PB20_PF_CSI_VSYNC,
 85         PB21_PF_CSI_HSYNC,
 86 };
 87 
 88 static int pcm970_sdhc2_get_ro(struct device *dev)
 89 {
 90         return gpio_get_value(GPIO_PORTC + 28);
 91 }
 92 
 93 static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
 94 {
 95         int ret;
 96 
 97         ret = request_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), detect_irq,
 98                           IRQF_TRIGGER_FALLING, "imx-mmc-detect", data);
 99         if (ret)
100                 return ret;
101 
102         ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
103         if (ret) {
104                 free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
105                 return ret;
106         }
107 
108         gpio_direction_input(GPIO_PORTC + 28);
109 
110         return 0;
111 }
112 
113 static void pcm970_sdhc2_exit(struct device *dev, void *data)
114 {
115         free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
116         gpio_free(GPIO_PORTC + 28);
117 }
118 
119 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
120         .get_ro = pcm970_sdhc2_get_ro,
121         .init = pcm970_sdhc2_init,
122         .exit = pcm970_sdhc2_exit,
123 };
124 
125 static struct imx_fb_videomode pcm970_modes[] = {
126         {
127                 .mode = {
128                         .name           = "Sharp-LQ035Q7",
129                         .refresh        = 60,
130                         .xres           = 240,
131                         .yres           = 320,
132                         .pixclock       = 188679, /* in ps (5.3MHz) */
133                         .hsync_len      = 7,
134                         .left_margin    = 5,
135                         .right_margin   = 16,
136                         .vsync_len      = 1,
137                         .upper_margin   = 7,
138                         .lower_margin   = 9,
139                 },
140                 /*
141                  * - HSYNC active high
142                  * - VSYNC active high
143                  * - clk notenabled while idle
144                  * - clock not inverted
145                  * - data not inverted
146                  * - data enable low active
147                  * - enable sharp mode
148                  */
149                 .pcr            = 0xF00080C0,
150                 .bpp            = 16,
151         }, {
152                 .mode = {
153                         .name           = "TX090",
154                         .refresh        = 60,
155                         .xres           = 240,
156                         .yres           = 320,
157                         .pixclock       = 38255,
158                         .left_margin    = 144,
159                         .right_margin   = 0,
160                         .upper_margin   = 7,
161                         .lower_margin   = 40,
162                         .hsync_len      = 96,
163                         .vsync_len      = 1,
164                 },
165                 /*
166                  * - HSYNC active low (1 << 22)
167                  * - VSYNC active low (1 << 23)
168                  * - clk notenabled while idle
169                  * - clock not inverted
170                  * - data not inverted
171                  * - data enable low active
172                  * - enable sharp mode
173                  */
174                 .pcr = 0xF0008080 | (1<<22) | (1<<23) | (1<<19),
175                 .bpp = 32,
176         },
177 };
178 
179 static const struct imx_fb_platform_data pcm038_fb_data __initconst = {
180         .mode = pcm970_modes,
181         .num_modes = ARRAY_SIZE(pcm970_modes),
182 
183         .pwmr           = 0x00A903FF,
184         .lscr1          = 0x00120300,
185         .dmacr          = 0x00020010,
186 };
187 
188 static struct resource pcm970_sja1000_resources[] = {
189         {
190                 .start   = MX27_CS4_BASE_ADDR,
191                 .end     = MX27_CS4_BASE_ADDR + 0x100 - 1,
192                 .flags   = IORESOURCE_MEM,
193         }, {
194                 /* irq number is run-time assigned */
195                 .flags   = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
196         },
197 };
198 
199 static struct sja1000_platform_data pcm970_sja1000_platform_data = {
200         .osc_freq       = 16000000,
201         .ocr            = OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL,
202         .cdr            = CDR_CBP,
203 };
204 
205 static struct platform_device pcm970_sja1000 = {
206         .name = "sja1000_platform",
207         .dev = {
208                 .platform_data = &pcm970_sja1000_platform_data,
209         },
210         .resource = pcm970_sja1000_resources,
211         .num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
212 };
213 
214 /*
215  * system init for baseboard usage. Will be called by pcm038 init.
216  *
217  * Add platform devices present on this baseboard and init
218  * them from CPU side as far as required to use them later on
219  */
220 void __init pcm970_baseboard_init(void)
221 {
222         mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
223                         "PCM970");
224 
225         imx27_add_imx_fb(&pcm038_fb_data);
226         mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN);
227         imx27_add_mxc_mmc(1, &sdhc_pdata);
228         pcm970_sja1000_resources[1].start = gpio_to_irq(IMX_GPIO_NR(5, 19));
229         pcm970_sja1000_resources[1].end = gpio_to_irq(IMX_GPIO_NR(5, 19));
230         platform_device_register(&pcm970_sja1000);
231 }
232 

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