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.
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.
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.
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 <asm/mach-types.h>
22 #include <asm/mach/arch.h>
23 #include <asm/mach/time.h>
24 #include <asm/mach/map.h>
27 #include "devices-imx21.h"
29 #include "iomux-mx21.h"
32 * Memory-mapped I/O on MX21ADS base board
34 #define MX21ADS_MMIO_BASE_ADDR 0xf5000000
35 #define MX21ADS_MMIO_SIZE 0xc00000
37 #define MX21ADS_REG_ADDR(offset) (void __force __iomem *) \
38 (MX21ADS_MMIO_BASE_ADDR + (offset))
40 #define MX21ADS_CS8900A_MMIO_SIZE 0x200000
41 #define MX21ADS_CS8900A_IRQ_GPIO IMX_GPIO_NR(5, 11)
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)
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
66 static const int mx21ads_pins
[] __initconst
= {
69 (GPIO_PORTE
| GPIO_GPIO
| GPIO_IN
| 11),
77 /* UART3 (IrDA) - only TXD and RXD */
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 */
141 /* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */
142 static struct physmap_flash_data mx21ads_flash_data
= {
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
,
152 static struct platform_device mx21ads_nor_mtd_device
= {
153 .name
= "physmap-flash",
156 .platform_data
= &mx21ads_flash_data
,
159 .resource
= &mx21ads_flash_resource
,
162 static struct resource mx21ads_cs8900_resources
[] __initdata
= {
163 DEFINE_RES_MEM(MX21_CS1_BASE_ADDR
, MX21ADS_CS8900A_MMIO_SIZE
),
164 /* irq number is run-time assigned */
168 static const struct platform_device_info mx21ads_cs8900_devinfo __initconst
= {
171 .res
= mx21ads_cs8900_resources
,
172 .num_res
= ARRAY_SIZE(mx21ads_cs8900_resources
),
175 static const struct imxuart_platform_data uart_pdata_rts __initconst
= {
176 .flags
= IMXUART_HAVE_RTSCTS
,
179 static const struct imxuart_platform_data uart_pdata_norts __initconst
= {
182 static int mx21ads_fb_init(struct platform_device
*pdev
)
186 tmp
= __raw_readw(MX21ADS_IO_REG
);
187 tmp
|= MX21ADS_IO_LCDON
;
188 __raw_writew(tmp
, MX21ADS_IO_REG
);
192 static void mx21ads_fb_exit(struct platform_device
*pdev
)
196 tmp
= __raw_readw(MX21ADS_IO_REG
);
197 tmp
&= ~MX21ADS_IO_LCDON
;
198 __raw_writew(tmp
, MX21ADS_IO_REG
);
202 * Connected is a portrait Sharp-QVGA display
203 * of type: LQ035Q7DB02
205 static struct imx_fb_videomode mx21ads_modes
[] = {
208 .name
= "Sharp-LQ035Q7",
212 .pixclock
= 188679, /* in ps (5.3MHz) */
225 static const struct imx_fb_platform_data mx21ads_fb_data __initconst
= {
226 .mode
= mx21ads_modes
,
227 .num_modes
= ARRAY_SIZE(mx21ads_modes
),
233 .init
= mx21ads_fb_init
,
234 .exit
= mx21ads_fb_exit
,
237 static int mx21ads_sdhc_get_ro(struct device
*dev
)
239 return (__raw_readw(MX21ADS_IO_REG
) & MX21ADS_IO_SD_WP
) ? 1 : 0;
242 static int mx21ads_sdhc_init(struct device
*dev
, irq_handler_t detect_irq
,
245 return request_irq(gpio_to_irq(IMX_GPIO_NR(4, 25)), detect_irq
,
246 IRQF_TRIGGER_FALLING
, "mmc-detect", data
);
249 static void mx21ads_sdhc_exit(struct device
*dev
, void *data
)
251 free_irq(gpio_to_irq(IMX_GPIO_NR(4, 25)), data
);
254 static const struct imxmmc_platform_data mx21ads_sdhc_pdata __initconst
= {
255 .ocr_avail
= MMC_VDD_29_30
| MMC_VDD_30_31
, /* 3.0V */
256 .get_ro
= mx21ads_sdhc_get_ro
,
257 .init
= mx21ads_sdhc_init
,
258 .exit
= mx21ads_sdhc_exit
,
261 static const struct mxc_nand_platform_data
262 mx21ads_nand_board_info __initconst
= {
267 static struct map_desc mx21ads_io_desc
[] __initdata
= {
269 * Memory-mapped I/O on MX21ADS Base board:
270 * - CS8900A Ethernet controller
272 * - CPU and Base board version
273 * - Base board I/O register
276 .virtual = MX21ADS_MMIO_BASE_ADDR
,
277 .pfn
= __phys_to_pfn(MX21_CS1_BASE_ADDR
),
278 .length
= MX21ADS_MMIO_SIZE
,
283 static void __init
mx21ads_map_io(void)
286 iotable_init(mx21ads_io_desc
, ARRAY_SIZE(mx21ads_io_desc
));
289 static struct platform_device
*platform_devices
[] __initdata
= {
290 &mx21ads_nor_mtd_device
,
293 static void __init
mx21ads_board_init(void)
297 mxc_gpio_setup_multiple_pins(mx21ads_pins
, ARRAY_SIZE(mx21ads_pins
),
300 imx21_add_imx_uart0(&uart_pdata_rts
);
301 imx21_add_imx_uart2(&uart_pdata_norts
);
302 imx21_add_imx_uart3(&uart_pdata_rts
);
303 imx21_add_imx_fb(&mx21ads_fb_data
);
304 imx21_add_mxc_mmc(0, &mx21ads_sdhc_pdata
);
305 imx21_add_mxc_nand(&mx21ads_nand_board_info
);
307 platform_add_devices(platform_devices
, ARRAY_SIZE(platform_devices
));
309 mx21ads_cs8900_resources
[1].start
=
310 gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO
);
311 mx21ads_cs8900_resources
[1].end
=
312 gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO
);
313 platform_device_register_full(&mx21ads_cs8900_devinfo
);
316 static void __init
mx21ads_timer_init(void)
318 mx21_clocks_init(32768, 26000000);
321 static struct sys_timer mx21ads_timer
= {
322 .init
= mx21ads_timer_init
,
325 MACHINE_START(MX21ADS
, "Freescale i.MX21ADS")
326 /* maintainer: Freescale Semiconductor, Inc. */
327 .atag_offset
= 0x100,
328 .map_io
= mx21ads_map_io
,
329 .init_early
= imx21_init_early
,
330 .init_irq
= mx21_init_irq
,
331 .handle_irq
= imx21_handle_irq
,
332 .timer
= &mx21ads_timer
,
333 .init_machine
= mx21ads_board_init
,
334 .restart
= mxc_restart
,