123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/*
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* Copyright (C) 2009 Francisco Jerez.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "drmP.h"
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#include "nouveau_drv.h"
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#include "nouveau_hw.h"
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#include "nouveau_gpio.h"
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int
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nv10_gpio_sense(struct drm_device *dev, int line)
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{
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if (line < 2) {
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line = line * 16;
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line = NVReadCRTC(dev, 0, NV_PCRTC_GPIO) >> line;
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return !!(line & 0x0100);
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} else
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if (line < 10) {
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line = (line - 2) * 4;
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line = NVReadCRTC(dev, 0, NV_PCRTC_GPIO_EXT) >> line;
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return !!(line & 0x04);
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} else
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if (line < 14) {
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line = (line - 10) * 4;
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line = NVReadCRTC(dev, 0, NV_PCRTC_850) >> line;
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return !!(line & 0x04);
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}
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return -EINVAL;
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}
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int
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nv10_gpio_drive(struct drm_device *dev, int line, int dir, int out)
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{
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u32 reg, mask, data;
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if (line < 2) {
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line = line * 16;
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reg = NV_PCRTC_GPIO;
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mask = 0x00000011;
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data = (dir << 4) | out;
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} else
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if (line < 10) {
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line = (line - 2) * 4;
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reg = NV_PCRTC_GPIO_EXT;
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mask = 0x00000003 << ((line - 2) * 4);
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data = (dir << 1) | out;
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} else
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if (line < 14) {
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line = (line - 10) * 4;
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reg = NV_PCRTC_850;
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mask = 0x00000003;
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data = (dir << 1) | out;
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} else {
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return -EINVAL;
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}
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mask = NVReadCRTC(dev, 0, reg) & ~(mask << line);
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NVWriteCRTC(dev, 0, reg, mask | (data << line));
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return 0;
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}
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void
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nv10_gpio_irq_enable(struct drm_device *dev, int line, bool on)
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{
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u32 mask = 0x00010001 << line;
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nv_wr32(dev, 0x001104, mask);
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nv_mask(dev, 0x001144, mask, on ? mask : 0);
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}
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static void
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nv10_gpio_isr(struct drm_device *dev)
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{
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u32 intr = nv_rd32(dev, 0x1104);
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u32 hi = (intr & 0x0000ffff) >> 0;
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u32 lo = (intr & 0xffff0000) >> 16;
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nouveau_gpio_isr(dev, 0, hi | lo);
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nv_wr32(dev, 0x001104, intr);
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}
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int
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nv10_gpio_init(struct drm_device *dev)
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{
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nv_wr32(dev, 0x001140, 0x00000000);
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nv_wr32(dev, 0x001100, 0xffffffff);
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nv_wr32(dev, 0x001144, 0x00000000);
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nv_wr32(dev, 0x001104, 0xffffffff);
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nouveau_irq_register(dev, 28, nv10_gpio_isr); /* PBUS */
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return 0;
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}
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void
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nv10_gpio_fini(struct drm_device *dev)
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{
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nv_wr32(dev, 0x001140, 0x00000000);
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nv_wr32(dev, 0x001144, 0x00000000);
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nouveau_irq_unregister(dev, 28);
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}
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