5f0a96b044
This creates a CS5535/CS5536 GPIO driver which uses a gpio_chip backend (allowing GPIO users to use the generic GPIO API if desired) while also allowing architecture-specific users directly (via the cs5535_gpio_* functions). Tested on an OLPC machine. Some Leemotes also use CS5536 (with a mips cpu), which is why this is in drivers/gpio rather than arch/x86. Currently, it conflicts with older geode GPIO support; once MFGPT support is reworked to also be more generic, the older geode code will be removed. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Takashi Iwai <tiwai@suse.de> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: David Brownell <david-b@pacbell.net> Reviewed-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* AMD CS5535/CS5536 definitions
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* Copyright (C) 2006 Advanced Micro Devices, Inc.
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* Copyright (C) 2009 Andres Salomon <dilinger@collabora.co.uk>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public License
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* as published by the Free Software Foundation.
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*/
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#ifndef _CS5535_H
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#define _CS5535_H
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/* MSRs */
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#define MSR_LBAR_SMB 0x5140000B
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#define MSR_LBAR_GPIO 0x5140000C
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#define MSR_LBAR_MFGPT 0x5140000D
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#define MSR_LBAR_ACPI 0x5140000E
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#define MSR_LBAR_PMS 0x5140000F
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/* resource sizes */
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#define LBAR_GPIO_SIZE 0xFF
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#define LBAR_MFGPT_SIZE 0x40
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#define LBAR_ACPI_SIZE 0x40
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#define LBAR_PMS_SIZE 0x80
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/* GPIOs */
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#define GPIO_OUTPUT_VAL 0x00
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#define GPIO_OUTPUT_ENABLE 0x04
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#define GPIO_OUTPUT_OPEN_DRAIN 0x08
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#define GPIO_OUTPUT_INVERT 0x0C
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#define GPIO_OUTPUT_AUX1 0x10
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#define GPIO_OUTPUT_AUX2 0x14
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#define GPIO_PULL_UP 0x18
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#define GPIO_PULL_DOWN 0x1C
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#define GPIO_INPUT_ENABLE 0x20
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#define GPIO_INPUT_INVERT 0x24
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#define GPIO_INPUT_FILTER 0x28
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#define GPIO_INPUT_EVENT_COUNT 0x2C
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#define GPIO_READ_BACK 0x30
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#define GPIO_INPUT_AUX1 0x34
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#define GPIO_EVENTS_ENABLE 0x38
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#define GPIO_LOCK_ENABLE 0x3C
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#define GPIO_POSITIVE_EDGE_EN 0x40
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#define GPIO_NEGATIVE_EDGE_EN 0x44
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#define GPIO_POSITIVE_EDGE_STS 0x48
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#define GPIO_NEGATIVE_EDGE_STS 0x4C
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#define GPIO_MAP_X 0xE0
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#define GPIO_MAP_Y 0xE4
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#define GPIO_MAP_Z 0xE8
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#define GPIO_MAP_W 0xEC
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void cs5535_gpio_set(unsigned offset, unsigned int reg);
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void cs5535_gpio_clear(unsigned offset, unsigned int reg);
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int cs5535_gpio_isset(unsigned offset, unsigned int reg);
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#endif
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