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ar71xx: add device registration code for the AR934x NAND flash contro…
…ller git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33387 3c298f89-4303-0410-b956-a3cf2f4a3e73
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juhosg
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Sep 13, 2012
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| /* | ||
| * Atheros AR934X SoCs built-in NAND flash controller support | ||
| * | ||
| * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 as published | ||
| * by the Free Software Foundation. | ||
| */ | ||
|
|
||
| #include <linux/kernel.h> | ||
| #include <linux/delay.h> | ||
| #include <linux/init.h> | ||
| #include <linux/irq.h> | ||
| #include <linux/dma-mapping.h> | ||
| #include <linux/etherdevice.h> | ||
| #include <linux/platform_device.h> | ||
| #include <linux/platform/ar934x_nfc.h> | ||
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| #include <asm/mach-ath79/ath79.h> | ||
| #include <asm/mach-ath79/ar71xx_regs.h> | ||
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| #include "dev-nfc.h" | ||
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| static struct resource ath79_nfc_resources[2]; | ||
| static u64 ar934x_nfc_dmamask = DMA_BIT_MASK(32); | ||
| static struct ar934x_nfc_platform_data ath79_nfc_data; | ||
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| static struct platform_device ath79_nfc_device = { | ||
| .name = AR934X_NFC_DRIVER_NAME, | ||
| .id = -1, | ||
| .resource = ath79_nfc_resources, | ||
| .num_resources = ARRAY_SIZE(ath79_nfc_resources), | ||
| .dev = { | ||
| .dma_mask = &ar934x_nfc_dmamask, | ||
| .coherent_dma_mask = DMA_BIT_MASK(32), | ||
| .platform_data = &ath79_nfc_data, | ||
| }, | ||
| }; | ||
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| static void ar934x_nfc_hw_reset(bool active) | ||
| { | ||
| if (active) { | ||
| ath79_device_reset_set(AR934X_RESET_NANDF); | ||
| udelay(100); | ||
|
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| ath79_device_reset_set(AR934X_RESET_ETH_SWITCH_ANALOG); | ||
| udelay(250); | ||
| } else { | ||
| ath79_device_reset_clear(AR934X_RESET_ETH_SWITCH_ANALOG); | ||
| udelay(250); | ||
|
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| ath79_device_reset_clear(AR934X_RESET_NANDF); | ||
| udelay(100); | ||
| } | ||
| } | ||
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| static void ar934x_nfc_setup(void) | ||
| { | ||
| ath79_nfc_resources[0].start = AR934X_NFC_BASE; | ||
| ath79_nfc_resources[0].end = AR934X_NFC_BASE + AR934X_NFC_SIZE - 1; | ||
| ath79_nfc_resources[0].flags = IORESOURCE_MEM; | ||
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| ath79_nfc_resources[1].start = ATH79_MISC_IRQ(21); | ||
| ath79_nfc_resources[1].end = ATH79_MISC_IRQ(21); | ||
| ath79_nfc_resources[1].flags = IORESOURCE_IRQ; | ||
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| ath79_nfc_data.hw_reset = ar934x_nfc_hw_reset; | ||
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| platform_device_register(&ath79_nfc_device); | ||
| } | ||
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| void __init ath79_nfc_set_select_chip(void (*f)(int chip_no)) | ||
| { | ||
| ath79_nfc_data.select_chip = f; | ||
| } | ||
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| void __init ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd)) | ||
| { | ||
| ath79_nfc_data.scan_fixup = f; | ||
| } | ||
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| void __init ath79_nfc_set_parts(struct mtd_partition *parts, int nr_parts) | ||
| { | ||
| ath79_nfc_data.parts = parts; | ||
| ath79_nfc_data.nr_parts = nr_parts; | ||
| } | ||
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| void __init ath79_register_nfc(void) | ||
| { | ||
| if (soc_is_ar934x()) | ||
| ar934x_nfc_setup(); | ||
| else | ||
| BUG(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| /* | ||
| * Atheros AR934X SoCs built-in NAND Flash Controller support | ||
| * | ||
| * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 as published | ||
| * by the Free Software Foundation. | ||
| */ | ||
|
|
||
| #ifndef _ATH79_DEV_NFC_H | ||
| #define _ATH79_DEV_NFC_H | ||
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| #ifdef CONFIG_ATH79_DEV_NFC | ||
| void ath79_nfc_set_parts(struct mtd_partition *parts, int nr_parts); | ||
| void ath79_nfc_set_select_chip(void (*f)(int chip_no)); | ||
| void ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd)); | ||
| void ath79_register_nfc(void); | ||
| #else | ||
| static inline void ath79_nfc_set_parts(struct mtd_partition *parts, | ||
| int nr_parts) {} | ||
| static inline void ath79_nfc_set_select_chip(void (*f)(int chip_no)) {} | ||
| static inline void ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd)) {} | ||
| static inline void ath79_register_nfc(void) {} | ||
| #endif | ||
|
|
||
| #endif /* _ATH79_DEV_NFC_H */ |
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