2 * linux/arch/arm/mach-pxa/gumstix.c
4 * Support for the Gumstix motherboards.
6 * Original Author: Craig Hughes
7 * Created: Feb 14, 2008
8 * Copyright: Craig Hughes
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * Implemented based on lubbock.c by Nicolas Pitre and code from Craig
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/platform_device.h>
22 #include <linux/interrupt.h>
23 #include <linux/delay.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/gpio.h>
27 #include <linux/err.h>
28 #include <linux/clk.h>
29 #include <linux/usb/gpio_vbus.h>
31 #include <asm/setup.h>
32 #include <asm/memory.h>
33 #include <asm/mach-types.h>
34 #include <mach/hardware.h>
36 #include <asm/sizes.h>
38 #include <asm/mach/arch.h>
39 #include <asm/mach/map.h>
40 #include <asm/mach/irq.h>
41 #include <asm/mach/flash.h>
44 #include <linux/platform_data/mmc-pxamci.h>
50 static struct resource flash_resource
= {
53 .flags
= IORESOURCE_MEM
,
56 static struct mtd_partition gumstix_partitions
[] = {
61 .mask_flags
= MTD_WRITEABLE
/* force read-only */
64 .size
= MTDPART_SIZ_FULL
,
65 .offset
= MTDPART_OFS_APPEND
69 static struct flash_platform_data gumstix_flash_data
= {
70 .map_name
= "cfi_probe",
71 .parts
= gumstix_partitions
,
72 .nr_parts
= ARRAY_SIZE(gumstix_partitions
),
76 static struct platform_device gumstix_flash_device
= {
77 .name
= "pxa2xx-flash",
80 .platform_data
= &gumstix_flash_data
,
82 .resource
= &flash_resource
,
86 static struct platform_device
*devices
[] __initdata
= {
87 &gumstix_flash_device
,
91 static struct pxamci_platform_data gumstix_mci_platform_data
= {
92 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
93 .gpio_card_detect
= -1,
98 static void __init
gumstix_mmc_init(void)
100 pxa_set_mci_info(&gumstix_mci_platform_data
);
103 static void __init
gumstix_mmc_init(void)
105 pr_debug("Gumstix mmc disabled\n");
109 #ifdef CONFIG_USB_PXA25X
110 static struct gpio_vbus_mach_info gumstix_udc_info
= {
111 .gpio_vbus
= GPIO_GUMSTIX_USB_GPIOn
,
112 .gpio_pullup
= GPIO_GUMSTIX_USB_GPIOx
,
115 static struct platform_device gumstix_gpio_vbus
= {
119 .platform_data
= &gumstix_udc_info
,
123 static void __init
gumstix_udc_init(void)
125 platform_device_register(&gumstix_gpio_vbus
);
128 static void gumstix_udc_init(void)
130 pr_debug("Gumstix udc is disabled\n");
135 /* Normally, the bootloader would have enabled this 32kHz clock but many
136 ** boards still have u-boot 1.1.4 so we check if it has been turned on and
137 ** if not, we turn it on with a warning message. */
138 static void gumstix_setup_bt_clock(void)
142 if (!(readl(OSCC
) & OSCC_OOK
))
143 pr_warn("32kHz clock was not on. Bootloader may need to be updated\n");
147 writel(readl(OSCC
) | OSCC_OON
, OSCC
);
149 if (readl(OSCC
) & OSCC_OOK
)
154 pr_err("Failed to start 32kHz clock\n");
157 static void __init
gumstix_bluetooth_init(void)
161 gumstix_setup_bt_clock();
163 err
= gpio_request(GPIO_GUMSTIX_BTRESET
, "BTRST");
165 pr_err("gumstix: failed request gpio for bluetooth reset\n");
169 err
= gpio_direction_output(GPIO_GUMSTIX_BTRESET
, 1);
171 pr_err("gumstix: can't reset bluetooth\n");
174 gpio_set_value(GPIO_GUMSTIX_BTRESET
, 0);
176 gpio_set_value(GPIO_GUMSTIX_BTRESET
, 1);
179 static void gumstix_bluetooth_init(void)
181 pr_debug("Gumstix Bluetooth is disabled\n");
185 static unsigned long gumstix_pin_config
[] __initdata
= {
198 int __attribute__((weak
)) am200_init(void)
203 int __attribute__((weak
)) am300_init(void)
208 static void __init
carrier_board_init(void)
211 * put carrier/expansion board init here if
212 * they cannot be detected programatically
218 static void __init
gumstix_init(void)
220 pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config
));
222 pxa_set_ffuart_info(NULL
);
223 pxa_set_btuart_info(NULL
);
224 pxa_set_stuart_info(NULL
);
225 pxa_set_hwuart_info(NULL
);
227 gumstix_bluetooth_init();
230 (void) platform_add_devices(devices
, ARRAY_SIZE(devices
));
231 carrier_board_init();
234 MACHINE_START(GUMSTIX
, "Gumstix")
235 .atag_offset
= 0x100, /* match u-boot bi_boot_params */
236 .map_io
= pxa25x_map_io
,
237 .nr_irqs
= PXA_NR_IRQS
,
238 .init_irq
= pxa25x_init_irq
,
239 .handle_irq
= pxa25x_handle_irq
,
240 .init_time
= pxa_timer_init
,
241 .init_machine
= gumstix_init
,
242 .restart
= pxa_restart
,