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0001 // SPDX-License-Identifier: GPL-2.0
0002 //
0003 // Copyright (c) 2008 Ramax Lo <ramaxlo@gmail.com>
0004 //      Based on mach-anubis.c by Ben Dooks <ben@simtec.co.uk>
0005 //      and modifications by SBZ <sbz@spgui.org> and
0006 //      Weibing <http://weibing.blogbus.com> and
0007 //      Michel Pollet <buserror@gmail.com>
0008 //
0009 // For product information, visit https://code.google.com/p/mini2440/
0010 
0011 #include <linux/kernel.h>
0012 #include <linux/types.h>
0013 #include <linux/interrupt.h>
0014 #include <linux/list.h>
0015 #include <linux/timer.h>
0016 #include <linux/init.h>
0017 #include <linux/gpio.h>
0018 #include <linux/gpio/machine.h>
0019 #include <linux/input.h>
0020 #include <linux/io.h>
0021 #include <linux/serial_core.h>
0022 #include <linux/serial_s3c.h>
0023 #include <linux/dm9000.h>
0024 #include <linux/property.h>
0025 #include <linux/platform_device.h>
0026 #include <linux/gpio_keys.h>
0027 #include <linux/i2c.h>
0028 #include <linux/mmc/host.h>
0029 
0030 #include <asm/mach/arch.h>
0031 #include <asm/mach/map.h>
0032 
0033 #include <linux/platform_data/fb-s3c2410.h>
0034 #include <asm/mach-types.h>
0035 
0036 #include "regs-gpio.h"
0037 #include <linux/platform_data/leds-s3c24xx.h>
0038 #include "irqs.h"
0039 #include "gpio-samsung.h"
0040 #include <linux/platform_data/mtd-nand-s3c2410.h>
0041 #include <linux/platform_data/i2c-s3c2410.h>
0042 #include <linux/platform_data/mmc-s3cmci.h>
0043 #include <linux/platform_data/usb-s3c2410_udc.h>
0044 
0045 #include <linux/mtd/mtd.h>
0046 #include <linux/mtd/rawnand.h>
0047 #include <linux/mtd/nand-ecc-sw-hamming.h>
0048 #include <linux/mtd/partitions.h>
0049 
0050 #include "gpio-cfg.h"
0051 #include "devs.h"
0052 #include "cpu.h"
0053 
0054 #include <sound/s3c24xx_uda134x.h>
0055 
0056 #include "s3c24xx.h"
0057 
0058 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
0059 
0060 static struct map_desc mini2440_iodesc[] __initdata = {
0061     /* nothing to declare, move along */
0062 };
0063 
0064 #define UCON S3C2410_UCON_DEFAULT
0065 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
0066 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
0067 
0068 
0069 static struct s3c2410_uartcfg mini2440_uartcfgs[] __initdata = {
0070     [0] = {
0071         .hwport     = 0,
0072         .flags      = 0,
0073         .ucon       = UCON,
0074         .ulcon      = ULCON,
0075         .ufcon      = UFCON,
0076     },
0077     [1] = {
0078         .hwport     = 1,
0079         .flags      = 0,
0080         .ucon       = UCON,
0081         .ulcon      = ULCON,
0082         .ufcon      = UFCON,
0083     },
0084     [2] = {
0085         .hwport     = 2,
0086         .flags      = 0,
0087         .ucon       = UCON,
0088         .ulcon      = ULCON,
0089         .ufcon      = UFCON,
0090     },
0091 };
0092 
0093 /* USB device UDC support */
0094 
0095 static struct s3c2410_udc_mach_info mini2440_udc_cfg __initdata = {
0096     .pullup_pin = S3C2410_GPC(5),
0097 };
0098 
0099 
0100 /* LCD timing and setup */
0101 
0102 /*
0103  * This macro simplifies the table bellow
0104  */
0105 #define _LCD_DECLARE(_clock, _xres, margin_left, margin_right, hsync, \
0106             _yres, margin_top, margin_bottom, vsync, refresh) \
0107     .width = _xres, \
0108     .xres = _xres, \
0109     .height = _yres, \
0110     .yres = _yres, \
0111     .left_margin    = margin_left,  \
0112     .right_margin   = margin_right, \
0113     .upper_margin   = margin_top,   \
0114     .lower_margin   = margin_bottom,    \
0115     .hsync_len  = hsync,    \
0116     .vsync_len  = vsync,    \
0117     .pixclock   = ((_clock*100000000000LL) /    \
0118                ((refresh) * \
0119                (hsync + margin_left + _xres + margin_right) * \
0120                (vsync + margin_top + _yres + margin_bottom))), \
0121     .bpp        = 16,\
0122     .type       = (S3C2410_LCDCON1_TFT16BPP |\
0123                S3C2410_LCDCON1_TFT)
0124 
0125 static struct s3c2410fb_display mini2440_lcd_cfg[] __initdata = {
0126     [0] = { /* mini2440 + 3.5" TFT + touchscreen */
0127         _LCD_DECLARE(
0128             7,          /* The 3.5 is quite fast */
0129             240, 21, 38, 6,     /* x timing */
0130             320, 4, 4, 2,       /* y timing */
0131             60),            /* refresh rate */
0132         .lcdcon5    = (S3C2410_LCDCON5_FRM565 |
0133                    S3C2410_LCDCON5_INVVLINE |
0134                    S3C2410_LCDCON5_INVVFRAME |
0135                    S3C2410_LCDCON5_INVVDEN |
0136                    S3C2410_LCDCON5_PWREN),
0137     },
0138     [1] = { /* mini2440 + 7" TFT + touchscreen */
0139         _LCD_DECLARE(
0140             10,         /* the 7" runs slower */
0141             800, 40, 40, 48,    /* x timing */
0142             480, 29, 3, 3,      /* y timing */
0143             50),            /* refresh rate */
0144         .lcdcon5    = (S3C2410_LCDCON5_FRM565 |
0145                    S3C2410_LCDCON5_INVVLINE |
0146                    S3C2410_LCDCON5_INVVFRAME |
0147                    S3C2410_LCDCON5_PWREN),
0148     },
0149     /* The VGA shield can outout at several resolutions. All share
0150      * the same timings, however, anything smaller than 1024x768
0151      * will only be displayed in the top left corner of a 1024x768
0152      * XGA output unless you add optional dip switches to the shield.
0153      * Therefore timings for other resolutions have been omitted here.
0154      */
0155     [2] = {
0156         _LCD_DECLARE(
0157             10,
0158             1024, 1, 2, 2,      /* y timing */
0159             768, 200, 16, 16,   /* x timing */
0160             24),    /* refresh rate, maximum stable,
0161                  * tested with the FPGA shield
0162                  */
0163         .lcdcon5    = (S3C2410_LCDCON5_FRM565 |
0164                    S3C2410_LCDCON5_HWSWP),
0165     },
0166     /* mini2440 + 3.5" TFT (LCD-W35i, LQ035Q1DG06 type) + touchscreen*/
0167     [3] = {
0168         _LCD_DECLARE(
0169             /* clock */
0170             7,
0171             /* xres, margin_right, margin_left, hsync */
0172             320, 68, 66, 4,
0173             /* yres, margin_top, margin_bottom, vsync */
0174             240, 4, 4, 9,
0175             /* refresh rate */
0176             60),
0177         .lcdcon5    = (S3C2410_LCDCON5_FRM565 |
0178                    S3C2410_LCDCON5_INVVDEN |
0179                    S3C2410_LCDCON5_INVVFRAME |
0180                    S3C2410_LCDCON5_INVVLINE |
0181                    S3C2410_LCDCON5_INVVCLK |
0182                    S3C2410_LCDCON5_HWSWP),
0183     },
0184 };
0185 
0186 /* todo - put into gpio header */
0187 
0188 #define S3C2410_GPCCON_MASK(x)  (3 << ((x) * 2))
0189 #define S3C2410_GPDCON_MASK(x)  (3 << ((x) * 2))
0190 
0191 static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
0192     .displays    = &mini2440_lcd_cfg[0], /* not constant! see init */
0193     .num_displays    = 1,
0194     .default_display = 0,
0195 
0196     /* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
0197      * and disable the pull down resistors on pins we are using for LCD
0198      * data.
0199      */
0200 
0201     .gpcup      = (0xf << 1) | (0x3f << 10),
0202 
0203     .gpccon     = (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
0204                S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
0205                S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
0206                S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
0207                S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
0208 
0209     .gpccon_mask    = (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
0210                S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
0211                S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
0212                S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
0213                S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
0214 
0215     .gpccon_reg = S3C2410_GPCCON,
0216     .gpcup_reg  = S3C2410_GPCUP,
0217 
0218     .gpdup      = (0x3f << 2) | (0x3f << 10),
0219 
0220     .gpdcon     = (S3C2410_GPD2_VD10  | S3C2410_GPD3_VD11 |
0221                S3C2410_GPD4_VD12  | S3C2410_GPD5_VD13 |
0222                S3C2410_GPD6_VD14  | S3C2410_GPD7_VD15 |
0223                S3C2410_GPD10_VD18 | S3C2410_GPD11_VD19 |
0224                S3C2410_GPD12_VD20 | S3C2410_GPD13_VD21 |
0225                S3C2410_GPD14_VD22 | S3C2410_GPD15_VD23),
0226 
0227     .gpdcon_mask    = (S3C2410_GPDCON_MASK(2)  | S3C2410_GPDCON_MASK(3) |
0228                S3C2410_GPDCON_MASK(4)  | S3C2410_GPDCON_MASK(5) |
0229                S3C2410_GPDCON_MASK(6)  | S3C2410_GPDCON_MASK(7) |
0230                S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
0231                S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
0232                S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
0233 
0234     .gpdcon_reg = S3C2410_GPDCON,
0235     .gpdup_reg  = S3C2410_GPDUP,
0236 };
0237 
0238 /* MMC/SD  */
0239 
0240 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
0241     .wprotect_invert    = 1,
0242     .set_power      = s3c24xx_mci_def_set_power,
0243     .ocr_avail      = MMC_VDD_32_33|MMC_VDD_33_34,
0244 };
0245 
0246 static struct gpiod_lookup_table mini2440_mmc_gpio_table = {
0247     .dev_id = "s3c2410-sdi",
0248     .table = {
0249         /* Card detect S3C2410_GPG(8) */
0250         GPIO_LOOKUP("GPIOG", 8, "cd", GPIO_ACTIVE_LOW),
0251         /* Write protect S3C2410_GPH(8) */
0252         GPIO_LOOKUP("GPIOH", 8, "wp", GPIO_ACTIVE_HIGH),
0253         /* bus pins */
0254         GPIO_LOOKUP_IDX("GPIOE",  5, "bus", 0, GPIO_ACTIVE_HIGH),
0255         GPIO_LOOKUP_IDX("GPIOE",  6, "bus", 1, GPIO_ACTIVE_HIGH),
0256         GPIO_LOOKUP_IDX("GPIOE",  7, "bus", 2, GPIO_ACTIVE_HIGH),
0257         GPIO_LOOKUP_IDX("GPIOE",  8, "bus", 3, GPIO_ACTIVE_HIGH),
0258         GPIO_LOOKUP_IDX("GPIOE",  9, "bus", 4, GPIO_ACTIVE_HIGH),
0259         GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH),
0260         { },
0261     },
0262 };
0263 
0264 /* NAND Flash on MINI2440 board */
0265 
0266 static struct mtd_partition mini2440_default_nand_part[] __initdata = {
0267     [0] = {
0268         .name   = "u-boot",
0269         .size   = SZ_256K,
0270         .offset = 0,
0271     },
0272     [1] = {
0273         .name   = "u-boot-env",
0274         .size   = SZ_128K,
0275         .offset = SZ_256K,
0276     },
0277     [2] = {
0278         .name   = "kernel",
0279         /* 5 megabytes, for a kernel with no modules
0280          * or a uImage with a ramdisk attached
0281          */
0282         .size   = 0x00500000,
0283         .offset = SZ_256K + SZ_128K,
0284     },
0285     [3] = {
0286         .name   = "root",
0287         .offset = SZ_256K + SZ_128K + 0x00500000,
0288         .size   = MTDPART_SIZ_FULL,
0289     },
0290 };
0291 
0292 static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
0293     [0] = {
0294         .name       = "nand",
0295         .nr_chips   = 1,
0296         .nr_partitions  = ARRAY_SIZE(mini2440_default_nand_part),
0297         .partitions = mini2440_default_nand_part,
0298         .flash_bbt  = 1, /* we use u-boot to create a BBT */
0299     },
0300 };
0301 
0302 static struct s3c2410_platform_nand mini2440_nand_info __initdata = {
0303     .tacls      = 0,
0304     .twrph0     = 25,
0305     .twrph1     = 15,
0306     .nr_sets    = ARRAY_SIZE(mini2440_nand_sets),
0307     .sets       = mini2440_nand_sets,
0308     .ignore_unset_ecc = 1,
0309     .engine_type    = NAND_ECC_ENGINE_TYPE_ON_HOST,
0310 };
0311 
0312 /* DM9000AEP 10/100 ethernet controller */
0313 
0314 static struct resource mini2440_dm9k_resource[] = {
0315     [0] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE, 4),
0316     [1] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE + 4, 4),
0317     [2] = DEFINE_RES_NAMED(IRQ_EINT7, 1, NULL, IORESOURCE_IRQ
0318                         | IORESOURCE_IRQ_HIGHEDGE),
0319 };
0320 
0321 /*
0322  * The DM9000 has no eeprom, and it's MAC address is set by
0323  * the bootloader before starting the kernel.
0324  */
0325 static struct dm9000_plat_data mini2440_dm9k_pdata = {
0326     .flags      = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
0327 };
0328 
0329 static struct platform_device mini2440_device_eth = {
0330     .name       = "dm9000",
0331     .id     = -1,
0332     .num_resources  = ARRAY_SIZE(mini2440_dm9k_resource),
0333     .resource   = mini2440_dm9k_resource,
0334     .dev        = {
0335         .platform_data  = &mini2440_dm9k_pdata,
0336     },
0337 };
0338 
0339 /*  CON5
0340  *  +--+     /-----\
0341  *  |  |    |   |
0342  *  |  |    |  BAT  |
0343  *  |  |     \_____/
0344  *  |  |
0345  *  |  |  +----+  +----+
0346  *  |  |  | K5 |  | K1 |
0347  *  |  |  +----+  +----+
0348  *  |  |  +----+  +----+
0349  *  |  |  | K4 |  | K2 |
0350  *  |  |  +----+  +----+
0351  *  |  |  +----+  +----+
0352  *  |  |  | K6 |  | K3 |
0353  *  |  |  +----+  +----+
0354  *    .....
0355  */
0356 static struct gpio_keys_button mini2440_buttons[] = {
0357     {
0358         .gpio       = S3C2410_GPG(0),       /* K1 */
0359         .code       = KEY_F1,
0360         .desc       = "Button 1",
0361         .active_low = 1,
0362     },
0363     {
0364         .gpio       = S3C2410_GPG(3),       /* K2 */
0365         .code       = KEY_F2,
0366         .desc       = "Button 2",
0367         .active_low = 1,
0368     },
0369     {
0370         .gpio       = S3C2410_GPG(5),       /* K3 */
0371         .code       = KEY_F3,
0372         .desc       = "Button 3",
0373         .active_low = 1,
0374     },
0375     {
0376         .gpio       = S3C2410_GPG(6),       /* K4 */
0377         .code       = KEY_POWER,
0378         .desc       = "Power",
0379         .active_low = 1,
0380     },
0381     {
0382         .gpio       = S3C2410_GPG(7),       /* K5 */
0383         .code       = KEY_F5,
0384         .desc       = "Button 5",
0385         .active_low = 1,
0386     },
0387 #if 0
0388     /* this pin is also known as TCLK1 and seems to already
0389      * marked as "in use" somehow in the kernel -- possibly wrongly
0390      */
0391     {
0392         .gpio       = S3C2410_GPG(11),  /* K6 */
0393         .code       = KEY_F6,
0394         .desc       = "Button 6",
0395         .active_low = 1,
0396     },
0397 #endif
0398 };
0399 
0400 static struct gpio_keys_platform_data mini2440_button_data = {
0401     .buttons    = mini2440_buttons,
0402     .nbuttons   = ARRAY_SIZE(mini2440_buttons),
0403 };
0404 
0405 static struct platform_device mini2440_button_device = {
0406     .name       = "gpio-keys",
0407     .id     = -1,
0408     .dev        = {
0409         .platform_data  = &mini2440_button_data,
0410     }
0411 };
0412 
0413 /* LEDS */
0414 
0415 static struct gpiod_lookup_table mini2440_led1_gpio_table = {
0416     .dev_id = "s3c24xx_led.1",
0417     .table = {
0418         GPIO_LOOKUP("GPB", 5, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
0419         { },
0420     },
0421 };
0422 
0423 static struct gpiod_lookup_table mini2440_led2_gpio_table = {
0424     .dev_id = "s3c24xx_led.2",
0425     .table = {
0426         GPIO_LOOKUP("GPB", 6, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
0427         { },
0428     },
0429 };
0430 
0431 static struct gpiod_lookup_table mini2440_led3_gpio_table = {
0432     .dev_id = "s3c24xx_led.3",
0433     .table = {
0434         GPIO_LOOKUP("GPB", 7, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
0435         { },
0436     },
0437 };
0438 
0439 static struct gpiod_lookup_table mini2440_led4_gpio_table = {
0440     .dev_id = "s3c24xx_led.4",
0441     .table = {
0442         GPIO_LOOKUP("GPB", 8, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
0443         { },
0444     },
0445 };
0446 
0447 static struct gpiod_lookup_table mini2440_backlight_gpio_table = {
0448     .dev_id = "s3c24xx_led.5",
0449     .table = {
0450         GPIO_LOOKUP("GPG", 4, NULL, GPIO_ACTIVE_HIGH),
0451         { },
0452     },
0453 };
0454 
0455 static struct s3c24xx_led_platdata mini2440_led1_pdata = {
0456     .name       = "led1",
0457     .def_trigger    = "heartbeat",
0458 };
0459 
0460 static struct s3c24xx_led_platdata mini2440_led2_pdata = {
0461     .name       = "led2",
0462     .def_trigger    = "nand-disk",
0463 };
0464 
0465 static struct s3c24xx_led_platdata mini2440_led3_pdata = {
0466     .name       = "led3",
0467     .def_trigger    = "mmc0",
0468 };
0469 
0470 static struct s3c24xx_led_platdata mini2440_led4_pdata = {
0471     .name       = "led4",
0472     .def_trigger    = "",
0473 };
0474 
0475 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
0476     .name       = "backlight",
0477     .def_trigger    = "backlight",
0478 };
0479 
0480 static struct platform_device mini2440_led1 = {
0481     .name       = "s3c24xx_led",
0482     .id     = 1,
0483     .dev        = {
0484         .platform_data  = &mini2440_led1_pdata,
0485     },
0486 };
0487 
0488 static struct platform_device mini2440_led2 = {
0489     .name       = "s3c24xx_led",
0490     .id     = 2,
0491     .dev        = {
0492         .platform_data  = &mini2440_led2_pdata,
0493     },
0494 };
0495 
0496 static struct platform_device mini2440_led3 = {
0497     .name       = "s3c24xx_led",
0498     .id     = 3,
0499     .dev        = {
0500         .platform_data  = &mini2440_led3_pdata,
0501     },
0502 };
0503 
0504 static struct platform_device mini2440_led4 = {
0505     .name       = "s3c24xx_led",
0506     .id     = 4,
0507     .dev        = {
0508         .platform_data  = &mini2440_led4_pdata,
0509     },
0510 };
0511 
0512 static struct platform_device mini2440_led_backlight = {
0513     .name       = "s3c24xx_led",
0514     .id     = 5,
0515     .dev        = {
0516         .platform_data  = &mini2440_led_backlight_pdata,
0517     },
0518 };
0519 
0520 /* AUDIO */
0521 
0522 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins = {
0523     .l3_clk = S3C2410_GPB(4),
0524     .l3_mode = S3C2410_GPB(2),
0525     .l3_data = S3C2410_GPB(3),
0526     .model = UDA134X_UDA1341
0527 };
0528 
0529 static struct platform_device mini2440_audio = {
0530     .name       = "s3c24xx_uda134x",
0531     .id     = 0,
0532     .dev        = {
0533         .platform_data  = &mini2440_audio_pins,
0534     },
0535 };
0536 
0537 /*
0538  * I2C devices
0539  */
0540 static const struct property_entry mini2440_at24_properties[] = {
0541     PROPERTY_ENTRY_U32("pagesize", 16),
0542     { }
0543 };
0544 
0545 static const struct software_node mini2440_at24_node = {
0546     .properties = mini2440_at24_properties,
0547 };
0548 
0549 static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
0550     {
0551         I2C_BOARD_INFO("24c08", 0x50),
0552         .swnode = &mini2440_at24_node,
0553     },
0554 };
0555 
0556 static struct uda134x_platform_data s3c24xx_uda134x = {
0557     .l3 = {
0558         .gpio_clk = S3C2410_GPB(4),
0559         .gpio_data = S3C2410_GPB(3),
0560         .gpio_mode = S3C2410_GPB(2),
0561         .use_gpios = 1,
0562         .data_hold = 1,
0563         .data_setup = 1,
0564         .clock_high = 1,
0565         .mode_hold = 1,
0566         .mode = 1,
0567         .mode_setup = 1,
0568     },
0569     .model = UDA134X_UDA1341,
0570 };
0571 
0572 static struct platform_device uda1340_codec = {
0573         .name = "uda134x-codec",
0574         .id = -1,
0575         .dev = {
0576             .platform_data  = &s3c24xx_uda134x,
0577         },
0578 };
0579 
0580 static struct platform_device *mini2440_devices[] __initdata = {
0581     &s3c_device_ohci,
0582     &s3c_device_wdt,
0583     &s3c_device_i2c0,
0584     &s3c_device_rtc,
0585     &s3c_device_usbgadget,
0586     &mini2440_device_eth,
0587     &mini2440_led1,
0588     &mini2440_led2,
0589     &mini2440_led3,
0590     &mini2440_led4,
0591     &mini2440_button_device,
0592     &s3c_device_nand,
0593     &s3c_device_sdi,
0594     &s3c2440_device_dma,
0595     &s3c_device_iis,
0596     &uda1340_codec,
0597     &mini2440_audio,
0598 };
0599 
0600 static void __init mini2440_map_io(void)
0601 {
0602     s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
0603     s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
0604     s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
0605 }
0606 
0607 static void __init mini2440_init_time(void)
0608 {
0609     s3c2440_init_clocks(12000000);
0610     s3c24xx_timer_init();
0611 }
0612 
0613 /*
0614  * mini2440_features string
0615  *
0616  * t = Touchscreen present
0617  * b = backlight control
0618  * c = camera [TODO]
0619  * 0-9 LCD configuration
0620  *
0621  */
0622 static char mini2440_features_str[12] __initdata = "0tb";
0623 
0624 static int __init mini2440_features_setup(char *str)
0625 {
0626     if (str)
0627         strscpy(mini2440_features_str, str,
0628             sizeof(mini2440_features_str));
0629     return 1;
0630 }
0631 
0632 __setup("mini2440=", mini2440_features_setup);
0633 
0634 #define FEATURE_SCREEN (1 << 0)
0635 #define FEATURE_BACKLIGHT (1 << 1)
0636 #define FEATURE_TOUCH (1 << 2)
0637 #define FEATURE_CAMERA (1 << 3)
0638 
0639 struct mini2440_features_t {
0640     int count;
0641     int done;
0642     int lcd_index;
0643     struct platform_device *optional[8];
0644 };
0645 
0646 static void __init mini2440_parse_features(
0647         struct mini2440_features_t *features,
0648         const char *features_str)
0649 {
0650     const char *fp = features_str;
0651 
0652     features->count = 0;
0653     features->done = 0;
0654     features->lcd_index = -1;
0655 
0656     while (*fp) {
0657         char f = *fp++;
0658 
0659         switch (f) {
0660         case '0'...'9': /* tft screen */
0661             if (features->done & FEATURE_SCREEN) {
0662                 pr_info("MINI2440: '%c' ignored, screen type already set\n",
0663                     f);
0664             } else {
0665                 int li = f - '0';
0666 
0667                 if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
0668                     pr_info("MINI2440: '%c' out of range LCD mode\n",
0669                         f);
0670                 else {
0671                     features->optional[features->count++] =
0672                             &s3c_device_lcd;
0673                     features->lcd_index = li;
0674                 }
0675             }
0676             features->done |= FEATURE_SCREEN;
0677             break;
0678         case 'b':
0679             if (features->done & FEATURE_BACKLIGHT)
0680                 pr_info("MINI2440: '%c' ignored, backlight already set\n",
0681                     f);
0682             else {
0683                 features->optional[features->count++] =
0684                         &mini2440_led_backlight;
0685             }
0686             features->done |= FEATURE_BACKLIGHT;
0687             break;
0688         case 't':
0689             pr_info("MINI2440: '%c' ignored, touchscreen not compiled in\n",
0690                 f);
0691             break;
0692         case 'c':
0693             if (features->done & FEATURE_CAMERA)
0694                 pr_info("MINI2440: '%c' ignored, camera already registered\n",
0695                     f);
0696             else
0697                 features->optional[features->count++] =
0698                     &s3c_device_camif;
0699             features->done |= FEATURE_CAMERA;
0700             break;
0701         }
0702     }
0703 }
0704 
0705 static void __init mini2440_init(void)
0706 {
0707     struct mini2440_features_t features = { 0 };
0708     int i;
0709 
0710     pr_info("MINI2440: Option string mini2440=%s\n",
0711             mini2440_features_str);
0712 
0713     /* Parse the feature string */
0714     mini2440_parse_features(&features, mini2440_features_str);
0715 
0716     /* turn LCD on */
0717     s3c_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
0718 
0719     /* Turn the backlight early on */
0720     WARN_ON(gpio_request_one(S3C2410_GPG(4), GPIOF_OUT_INIT_HIGH, NULL));
0721     gpio_free(S3C2410_GPG(4));
0722 
0723     /* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
0724     gpio_request_one(S3C2410_GPB(1), GPIOF_IN, NULL);
0725     s3c_gpio_setpull(S3C2410_GPB(1), S3C_GPIO_PULL_UP);
0726     gpio_free(S3C2410_GPB(1));
0727 
0728     /* mark the key as input, without pullups (there is one on the board) */
0729     for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
0730         s3c_gpio_setpull(mini2440_buttons[i].gpio, S3C_GPIO_PULL_UP);
0731         s3c_gpio_cfgpin(mini2440_buttons[i].gpio, S3C2410_GPIO_INPUT);
0732     }
0733 
0734     /* Configure the I2S pins (GPE0...GPE4) in correct mode */
0735     s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
0736                   S3C_GPIO_PULL_NONE);
0737 
0738     if (features.lcd_index != -1) {
0739         int li;
0740 
0741         mini2440_fb_info.displays =
0742             &mini2440_lcd_cfg[features.lcd_index];
0743 
0744         pr_info("MINI2440: LCD");
0745         for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
0746             if (li == features.lcd_index)
0747                 pr_cont(" [%d:%dx%d]", li,
0748                     mini2440_lcd_cfg[li].width,
0749                     mini2440_lcd_cfg[li].height);
0750             else
0751                 pr_cont(" %d:%dx%d", li,
0752                     mini2440_lcd_cfg[li].width,
0753                     mini2440_lcd_cfg[li].height);
0754         pr_cont("\n");
0755         s3c24xx_fb_set_platdata(&mini2440_fb_info);
0756     }
0757 
0758     s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
0759     gpiod_add_lookup_table(&mini2440_mmc_gpio_table);
0760     s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
0761     s3c_nand_set_platdata(&mini2440_nand_info);
0762     s3c_i2c0_set_platdata(NULL);
0763 
0764     i2c_register_board_info(0, mini2440_i2c_devs,
0765                 ARRAY_SIZE(mini2440_i2c_devs));
0766 
0767     /* Disable pull-up on the LED lines */
0768     s3c_gpio_setpull(S3C2410_GPB(5), S3C_GPIO_PULL_NONE);
0769     s3c_gpio_setpull(S3C2410_GPB(6), S3C_GPIO_PULL_NONE);
0770     s3c_gpio_setpull(S3C2410_GPB(7), S3C_GPIO_PULL_NONE);
0771     s3c_gpio_setpull(S3C2410_GPB(8), S3C_GPIO_PULL_NONE);
0772     s3c_gpio_setpull(S3C2410_GPG(4), S3C_GPIO_PULL_NONE);
0773 
0774     /* Add lookups for the lines */
0775     gpiod_add_lookup_table(&mini2440_led1_gpio_table);
0776     gpiod_add_lookup_table(&mini2440_led2_gpio_table);
0777     gpiod_add_lookup_table(&mini2440_led3_gpio_table);
0778     gpiod_add_lookup_table(&mini2440_led4_gpio_table);
0779     gpiod_add_lookup_table(&mini2440_backlight_gpio_table);
0780 
0781     platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
0782 
0783     if (features.count) /* the optional features */
0784         platform_add_devices(features.optional, features.count);
0785 
0786 }
0787 
0788 
0789 MACHINE_START(MINI2440, "MINI2440")
0790     /* Maintainer: Michel Pollet <buserror@gmail.com> */
0791     .atag_offset    = 0x100,
0792     .nr_irqs    = NR_IRQS_S3C2440,
0793     .map_io     = mini2440_map_io,
0794     .init_machine   = mini2440_init,
0795     .init_irq   = s3c2440_init_irq,
0796     .init_time  = mini2440_init_time,
0797 MACHINE_END
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