forked from Minki/linux
a0b2563551
- moves out of nouveau_bios.c and demagics the logical state definitions - simplifies chipset-specific driver interface - makes most of gpio irq handling common, will use for nv4x hpd later - api extended to allow both direct gpio access, and access using the logical function states - api extended to allow for future use of gpio extender chips - pre-nv50 was handled very badly, the main issue being that all GPIOs were being treated as output-only. - fixes nvd0 so gpio changes actually stick, magic reg needs bashing Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/*
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* Copyright 2011 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __NOUVEAU_GPIO_H__
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#define __NOUVEAU_GPIO_H__
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struct gpio_func {
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u8 func;
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u8 line;
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u8 log[2];
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};
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/* nouveau_gpio.c */
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int nouveau_gpio_create(struct drm_device *);
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void nouveau_gpio_destroy(struct drm_device *);
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int nouveau_gpio_init(struct drm_device *);
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void nouveau_gpio_fini(struct drm_device *);
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void nouveau_gpio_reset(struct drm_device *);
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int nouveau_gpio_drive(struct drm_device *, int idx, int line,
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int dir, int out);
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int nouveau_gpio_sense(struct drm_device *, int idx, int line);
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int nouveau_gpio_find(struct drm_device *, int idx, u8 tag, u8 line,
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struct gpio_func *);
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int nouveau_gpio_set(struct drm_device *, int idx, u8 tag, u8 line, int state);
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int nouveau_gpio_get(struct drm_device *, int idx, u8 tag, u8 line);
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int nouveau_gpio_irq(struct drm_device *, int idx, u8 tag, u8 line, bool on);
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void nouveau_gpio_isr(struct drm_device *, int idx, u32 mask);
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int nouveau_gpio_isr_add(struct drm_device *, int idx, u8 tag, u8 line,
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void (*)(void *, int state), void *data);
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void nouveau_gpio_isr_del(struct drm_device *, int idx, u8 tag, u8 line,
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void (*)(void *, int state), void *data);
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static inline bool
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nouveau_gpio_func_valid(struct drm_device *dev, u8 tag)
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{
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struct gpio_func func;
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return (nouveau_gpio_find(dev, 0, tag, 0xff, &func)) == 0;
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}
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static inline int
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nouveau_gpio_func_set(struct drm_device *dev, u8 tag, int state)
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{
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return nouveau_gpio_set(dev, 0, tag, 0xff, state);
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}
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static inline int
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nouveau_gpio_func_get(struct drm_device *dev, u8 tag)
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{
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return nouveau_gpio_get(dev, 0, tag, 0xff);
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}
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#endif
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