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acb36559 DM |
1 | /* |
2 | * arch/arm/mach-pxa/colibri-pxa3xx.c | |
3 | * | |
4 | * Common functions for all Toradex PXA3xx modules | |
5 | * | |
6 | * Daniel Mack <daniel@caiaq.de> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/gpio.h> | |
17 | #include <asm/mach-types.h> | |
18 | #include <mach/hardware.h> | |
19 | #include <asm/sizes.h> | |
20 | #include <asm/mach/arch.h> | |
21 | #include <asm/mach/irq.h> | |
22 | #include <mach/pxa3xx-regs.h> | |
23 | #include <mach/mfp-pxa300.h> | |
24 | #include <mach/colibri.h> | |
25 | #include <mach/mmc.h> | |
26 | ||
27 | #include "generic.h" | |
28 | #include "devices.h" | |
29 | ||
30 | #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE) | |
31 | static int mmc_detect_pin; | |
32 | ||
33 | static int colibri_pxa3xx_mci_init(struct device *dev, | |
34 | irq_handler_t colibri_mmc_detect_int, | |
35 | void *data) | |
36 | { | |
37 | int ret; | |
38 | ||
39 | ret = gpio_request(mmc_detect_pin, "mmc card detect"); | |
40 | if (ret) | |
41 | return ret; | |
42 | ||
43 | gpio_direction_input(mmc_detect_pin); | |
44 | ret = request_irq(gpio_to_irq(mmc_detect_pin), colibri_mmc_detect_int, | |
45 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, | |
46 | "MMC card detect", data); | |
47 | if (ret) { | |
48 | gpio_free(mmc_detect_pin); | |
49 | return ret; | |
50 | } | |
51 | ||
52 | return 0; | |
53 | } | |
54 | ||
55 | static void colibri_pxa3xx_mci_exit(struct device *dev, void *data) | |
56 | { | |
57 | free_irq(mmc_detect_pin, data); | |
58 | gpio_free(gpio_to_irq(mmc_detect_pin)); | |
59 | } | |
60 | ||
61 | static struct pxamci_platform_data colibri_pxa3xx_mci_platform_data = { | |
62 | .detect_delay = 20, | |
63 | .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, | |
64 | .init = colibri_pxa3xx_mci_init, | |
65 | .exit = colibri_pxa3xx_mci_exit, | |
66 | }; | |
67 | ||
68 | void __init colibri_pxa3xx_init_mmc(mfp_cfg_t *pins, int len, int detect_pin) | |
69 | { | |
70 | pxa3xx_mfp_config(pins, len); | |
71 | mmc_detect_pin = detect_pin; | |
72 | pxa_set_mci_info(&colibri_pxa3xx_mci_platform_data); | |
73 | } | |
74 | #endif /* CONFIG_MMC_PXA || CONFIG_MMC_PXA_MODULE */ | |
75 |