Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Dave Airlie | 488 | 85.02% | 1 | 9.09% |
Thomas Zimmermann | 77 | 13.41% | 8 | 72.73% |
Julia Lemire | 7 | 1.22% | 1 | 9.09% |
Sam Ravnborg | 2 | 0.35% | 1 | 9.09% |
Total | 574 | 11 |
/* * Copyright 2012 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * */ /* * Authors: Dave Airlie <airlied@redhat.com> */ #include <linux/export.h> #include <linux/i2c-algo-bit.h> #include <linux/i2c.h> #include <linux/pci.h> #include "mgag200_drv.h" static int mga_i2c_read_gpio(struct mga_device *mdev) { WREG8(DAC_INDEX, MGA1064_GEN_IO_DATA); return RREG8(DAC_DATA); } static void mga_i2c_set_gpio(struct mga_device *mdev, int mask, int val) { int tmp; WREG8(DAC_INDEX, MGA1064_GEN_IO_CTL); tmp = (RREG8(DAC_DATA) & mask) | val; WREG_DAC(MGA1064_GEN_IO_CTL, tmp); WREG_DAC(MGA1064_GEN_IO_DATA, 0); } static inline void mga_i2c_set(struct mga_device *mdev, int mask, int state) { if (state) state = 0; else state = mask; mga_i2c_set_gpio(mdev, ~mask, state); } static void mga_gpio_setsda(void *data, int state) { struct mga_i2c_chan *i2c = data; struct mga_device *mdev = to_mga_device(i2c->dev); mga_i2c_set(mdev, i2c->data, state); } static void mga_gpio_setscl(void *data, int state) { struct mga_i2c_chan *i2c = data; struct mga_device *mdev = to_mga_device(i2c->dev); mga_i2c_set(mdev, i2c->clock, state); } static int mga_gpio_getsda(void *data) { struct mga_i2c_chan *i2c = data; struct mga_device *mdev = to_mga_device(i2c->dev); return (mga_i2c_read_gpio(mdev) & i2c->data) ? 1 : 0; } static int mga_gpio_getscl(void *data) { struct mga_i2c_chan *i2c = data; struct mga_device *mdev = to_mga_device(i2c->dev); return (mga_i2c_read_gpio(mdev) & i2c->clock) ? 1 : 0; } static void mgag200_i2c_release(void *res) { struct mga_i2c_chan *i2c = res; i2c_del_adapter(&i2c->adapter); } int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c) { struct drm_device *dev = &mdev->base; const struct mgag200_device_info *info = mdev->info; int ret; WREG_DAC(MGA1064_GEN_IO_CTL2, 1); WREG_DAC(MGA1064_GEN_IO_DATA, 0xff); WREG_DAC(MGA1064_GEN_IO_CTL, 0); i2c->data = BIT(info->i2c.data_bit); i2c->clock = BIT(info->i2c.clock_bit); i2c->adapter.owner = THIS_MODULE; i2c->adapter.dev.parent = dev->dev; i2c->dev = dev; i2c_set_adapdata(&i2c->adapter, i2c); snprintf(i2c->adapter.name, sizeof(i2c->adapter.name), "mga i2c"); i2c->adapter.algo_data = &i2c->bit; i2c->bit.udelay = 10; i2c->bit.timeout = 2; i2c->bit.data = i2c; i2c->bit.setsda = mga_gpio_setsda; i2c->bit.setscl = mga_gpio_setscl; i2c->bit.getsda = mga_gpio_getsda; i2c->bit.getscl = mga_gpio_getscl; ret = i2c_bit_add_bus(&i2c->adapter); if (ret) return ret; return devm_add_action_or_reset(dev->dev, mgag200_i2c_release, i2c); }
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