1 /*
2 * Copyright (C) 2000 Deep Blue Solutions Ltd
3 * Copyright (C) 2002 Shane Nay (shane@minirl.com)
4 * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17 #include <linux/platform_device.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/physmap.h>
20 #include <linux/gpio.h>
21 #include <mach/common.h>
22 #include <mach/hardware.h>
23 #include <asm/mach-types.h>
24 #include <asm/mach/arch.h>
25 #include <asm/mach/time.h>
26 #include <asm/mach/map.h>
27 #include <mach/iomux-mx21.h>
28
29 #include "devices-imx21.h"
30
31 /*
32 * Memory-mapped I/O on MX21ADS base board
33 */
34 #define MX21ADS_MMIO_BASE_ADDR 0xf5000000
35 #define MX21ADS_MMIO_SIZE SZ_16M
36
37 #define MX21ADS_REG_ADDR(offset) (void __force __iomem *) \
38 (MX21ADS_MMIO_BASE_ADDR + (offset))
39
40 #define MX21ADS_CS8900A_IRQ IRQ_GPIOE(11)
41 #define MX21ADS_CS8900A_IOBASE_REG MX21ADS_REG_ADDR(0x000000)
42 #define MX21ADS_ST16C255_IOBASE_REG MX21ADS_REG_ADDR(0x200000)
43 #define MX21ADS_VERSION_REG MX21ADS_REG_ADDR(0x400000)
44 #define MX21ADS_IO_REG MX21ADS_REG_ADDR(0x800000)
45
46 /* MX21ADS_IO_REG bit definitions */
47 #define MX21ADS_IO_SD_WP 0x0001 /* read */
48 #define MX21ADS_IO_TP6 0x0001 /* write */
49 #define MX21ADS_IO_SW_SEL 0x0002 /* read */
50 #define MX21ADS_IO_TP7 0x0002 /* write */
51 #define MX21ADS_IO_RESET_E_UART 0x0004
52 #define MX21ADS_IO_RESET_BASE 0x0008
53 #define MX21ADS_IO_CSI_CTL2 0x0010
54 #define MX21ADS_IO_CSI_CTL1 0x0020
55 #define MX21ADS_IO_CSI_CTL0 0x0040
56 #define MX21ADS_IO_UART1_EN 0x0080
57 #define MX21ADS_IO_UART4_EN 0x0100
58 #define MX21ADS_IO_LCDON 0x0200
59 #define MX21ADS_IO_IRDA_EN 0x0400
60 #define MX21ADS_IO_IRDA_FIR_SEL 0x0800
61 #define MX21ADS_IO_IRDA_MD0_B 0x1000
62 #define MX21ADS_IO_IRDA_MD1 0x2000
63 #define MX21ADS_IO_LED4_ON 0x4000
64 #define MX21ADS_IO_LED3_ON 0x8000
65
66 static const int mx21ads_pins[] __initconst = {
67
68 /* CS8900A */
69 (GPIO_PORTE | GPIO_GPIO | GPIO_IN | 11),
70
71 /* UART1 */
72 PE12_PF_UART1_TXD,
73 PE13_PF_UART1_RXD,
74 PE14_PF_UART1_CTS,
75 PE15_PF_UART1_RTS,
76
77 /* UART3 (IrDA) - only TXD and RXD */
78 PE8_PF_UART3_TXD,
79 PE9_PF_UART3_RXD,
80
81 /* UART4 */
82 PB26_AF_UART4_RTS,
83 PB28_AF_UART4_TXD,
84 PB29_AF_UART4_CTS,
85 PB31_AF_UART4_RXD,
86
87 /* LCDC */
88 PA5_PF_LSCLK,
89 PA6_PF_LD0,
90 PA7_PF_LD1,
91 PA8_PF_LD2,
92 PA9_PF_LD3,
93 PA10_PF_LD4,
94 PA11_PF_LD5,
95 PA12_PF_LD6,
96 PA13_PF_LD7,
97 PA14_PF_LD8,
98 PA15_PF_LD9,
99 PA16_PF_LD10,
100 PA17_PF_LD11,
101 PA18_PF_LD12,
102 PA19_PF_LD13,
103 PA20_PF_LD14,
104 PA21_PF_LD15,
105 PA22_PF_LD16,
106 PA24_PF_REV, /* Sharp panel dedicated signal */
107 PA25_PF_CLS, /* Sharp panel dedicated signal */
108 PA26_PF_PS, /* Sharp panel dedicated signal */
109 PA27_PF_SPL_SPR, /* Sharp panel dedicated signal */
110 PA28_PF_HSYNC,
111 PA29_PF_VSYNC,
112 PA30_PF_CONTRAST,
113 PA31_PF_OE_ACD,
114
115 /* MMC/SDHC */
116 PE18_PF_SD1_D0,
117 PE19_PF_SD1_D1,
118 PE20_PF_SD1_D2,
119 PE21_PF_SD1_D3,
120 PE22_PF_SD1_CMD,
121 PE23_PF_SD1_CLK,
122
123 /* NFC */
124 PF0_PF_NRFB,
125 PF1_PF_NFCE,
126 PF2_PF_NFWP,
127 PF3_PF_NFCLE,
128 PF4_PF_NFALE,
129 PF5_PF_NFRE,
130 PF6_PF_NFWE,
131 PF7_PF_NFIO0,
132 PF8_PF_NFIO1,
133 PF9_PF_NFIO2,
134 PF10_PF_NFIO3,
135 PF11_PF_NFIO4,
136 PF12_PF_NFIO5,
137 PF13_PF_NFIO6,
138 PF14_PF_NFIO7,
139 };
140
141 /* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */
142 static struct physmap_flash_data mx21ads_flash_data = {
143 .width = 4,
144 };
145
146 static struct resource mx21ads_flash_resource = {
147 .start = MX21_CS0_BASE_ADDR,
148 .end = MX21_CS0_BASE_ADDR + 0x02000000 - 1,
149 .flags = IORESOURCE_MEM,
150 };
151
152 static struct platform_device mx21ads_nor_mtd_device = {
153 .name = "physmap-flash",
154 .id = 0,
155 .dev = {
156 .platform_data = &mx21ads_flash_data,
157 },
158 .num_resources = 1,
159 .resource = &mx21ads_flash_resource,
160 };
161
162 static const struct imxuart_platform_data uart_pdata_rts __initconst = {
163 .flags = IMXUART_HAVE_RTSCTS,
164 };
165
166 static const struct imxuart_platform_data uart_pdata_norts __initconst = {
167 };
168
mx21ads_fb_init(struct platform_device * pdev)169 static int mx21ads_fb_init(struct platform_device *pdev)
170 {
171 u16 tmp;
172
173 tmp = __raw_readw(MX21ADS_IO_REG);
174 tmp |= MX21ADS_IO_LCDON;
175 __raw_writew(tmp, MX21ADS_IO_REG);
176 return 0;
177 }
178
mx21ads_fb_exit(struct platform_device * pdev)179 static void mx21ads_fb_exit(struct platform_device *pdev)
180 {
181 u16 tmp;
182
183 tmp = __raw_readw(MX21ADS_IO_REG);
184 tmp &= ~MX21ADS_IO_LCDON;
185 __raw_writew(tmp, MX21ADS_IO_REG);
186 }
187
188 /*
189 * Connected is a portrait Sharp-QVGA display
190 * of type: LQ035Q7DB02
191 */
192 static struct imx_fb_videomode mx21ads_modes[] = {
193 {
194 .mode = {
195 .name = "Sharp-LQ035Q7",
196 .refresh = 60,
197 .xres = 240,
198 .yres = 320,
199 .pixclock = 188679, /* in ps (5.3MHz) */
200 .hsync_len = 2,
201 .left_margin = 6,
202 .right_margin = 16,
203 .vsync_len = 1,
204 .upper_margin = 8,
205 .lower_margin = 10,
206 },
207 .pcr = 0xfb108bc7,
208 .bpp = 16,
209 },
210 };
211
212 static const struct imx_fb_platform_data mx21ads_fb_data __initconst = {
213 .mode = mx21ads_modes,
214 .num_modes = ARRAY_SIZE(mx21ads_modes),
215
216 .pwmr = 0x00a903ff,
217 .lscr1 = 0x00120300,
218 .dmacr = 0x00020008,
219
220 .init = mx21ads_fb_init,
221 .exit = mx21ads_fb_exit,
222 };
223
mx21ads_sdhc_get_ro(struct device * dev)224 static int mx21ads_sdhc_get_ro(struct device *dev)
225 {
226 return (__raw_readw(MX21ADS_IO_REG) & MX21ADS_IO_SD_WP) ? 1 : 0;
227 }
228
mx21ads_sdhc_init(struct device * dev,irq_handler_t detect_irq,void * data)229 static int mx21ads_sdhc_init(struct device *dev, irq_handler_t detect_irq,
230 void *data)
231 {
232 return request_irq(IRQ_GPIOD(25), detect_irq,
233 IRQF_TRIGGER_FALLING, "mmc-detect", data);
234 }
235
mx21ads_sdhc_exit(struct device * dev,void * data)236 static void mx21ads_sdhc_exit(struct device *dev, void *data)
237 {
238 free_irq(IRQ_GPIOD(25), data);
239 }
240
241 static const struct imxmmc_platform_data mx21ads_sdhc_pdata __initconst = {
242 .ocr_avail = MMC_VDD_29_30 | MMC_VDD_30_31, /* 3.0V */
243 .get_ro = mx21ads_sdhc_get_ro,
244 .init = mx21ads_sdhc_init,
245 .exit = mx21ads_sdhc_exit,
246 };
247
248 static const struct mxc_nand_platform_data
249 mx21ads_nand_board_info __initconst = {
250 .width = 1,
251 .hw_ecc = 1,
252 };
253
254 static struct map_desc mx21ads_io_desc[] __initdata = {
255 /*
256 * Memory-mapped I/O on MX21ADS Base board:
257 * - CS8900A Ethernet controller
258 * - ST16C2552CJ UART
259 * - CPU and Base board version
260 * - Base board I/O register
261 */
262 {
263 .virtual = MX21ADS_MMIO_BASE_ADDR,
264 .pfn = __phys_to_pfn(MX21_CS1_BASE_ADDR),
265 .length = MX21ADS_MMIO_SIZE,
266 .type = MT_DEVICE,
267 },
268 };
269
mx21ads_map_io(void)270 static void __init mx21ads_map_io(void)
271 {
272 mx21_map_io();
273 iotable_init(mx21ads_io_desc, ARRAY_SIZE(mx21ads_io_desc));
274 }
275
276 static struct platform_device *platform_devices[] __initdata = {
277 &mx21ads_nor_mtd_device,
278 };
279
mx21ads_board_init(void)280 static void __init mx21ads_board_init(void)
281 {
282 imx21_soc_init();
283
284 mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins),
285 "mx21ads");
286
287 imx21_add_imx_uart0(&uart_pdata_rts);
288 imx21_add_imx_uart2(&uart_pdata_norts);
289 imx21_add_imx_uart3(&uart_pdata_rts);
290 imx21_add_imx_fb(&mx21ads_fb_data);
291 imx21_add_mxc_mmc(0, &mx21ads_sdhc_pdata);
292 imx21_add_mxc_nand(&mx21ads_nand_board_info);
293
294 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
295 }
296
mx21ads_timer_init(void)297 static void __init mx21ads_timer_init(void)
298 {
299 mx21_clocks_init(32768, 26000000);
300 }
301
302 static struct sys_timer mx21ads_timer = {
303 .init = mx21ads_timer_init,
304 };
305
306 MACHINE_START(MX21ADS, "Freescale i.MX21ADS")
307 /* maintainer: Freescale Semiconductor, Inc. */
308 .atag_offset = 0x100,
309 .map_io = mx21ads_map_io,
310 .init_early = imx21_init_early,
311 .init_irq = mx21_init_irq,
312 .handle_irq = imx21_handle_irq,
313 .timer = &mx21ads_timer,
314 .init_machine = mx21ads_board_init,
315 .restart = mxc_restart,
316 MACHINE_END
317