/* * Copyright (c) 2006 Dave Airlie <[email protected]> * Copyright © 2006-2008,2010 Intel Corporation * Jesse Barnes <[email protected]> * * 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, sublicense, * 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 above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * 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 NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS 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. * * Authors: * Eric Anholt <[email protected]> * Chris Wilson <[email protected]> */ #include <linux/delay.h> #include <linux/i2c-algo-bit.h> #include <linux/i2c.h> #include <linux/module.h> #include "psb_drv.h" #include "psb_intel_drv.h" #include "psb_intel_reg.h" #define _wait_for(COND, MS, W) … #define wait_for(COND, MS) … #define GMBUS_REG_READ(reg) … #define GMBUS_REG_WRITE(reg, val) … /* Intel GPIO access functions */ #define I2C_RISEFALL_TIME … static inline struct intel_gmbus * to_intel_gmbus(struct i2c_adapter *i2c) { … } struct intel_gpio { … }; void gma_intel_i2c_reset(struct drm_device *dev) { … } static void intel_i2c_quirk_set(struct drm_psb_private *dev_priv, bool enable) { … } static u32 get_reserved(struct intel_gpio *gpio) { … } static int get_clock(void *data) { … } static int get_data(void *data) { … } static void set_clock(void *data, int state_high) { … } static void set_data(void *data, int state_high) { … } static struct i2c_adapter * intel_gpio_create(struct drm_psb_private *dev_priv, u32 pin) { … } static int intel_i2c_quirk_xfer(struct drm_psb_private *dev_priv, struct i2c_adapter *adapter, struct i2c_msg *msgs, int num) { … } static int gmbus_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, int num) { … } static u32 gmbus_func(struct i2c_adapter *adapter) { … } static const struct i2c_algorithm gmbus_algorithm = …; /** * gma_intel_setup_gmbus() - instantiate all Intel i2c GMBuses * @dev: DRM device */ int gma_intel_setup_gmbus(struct drm_device *dev) { … } void gma_intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed) { … } void gma_intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit) { … } void gma_intel_teardown_gmbus(struct drm_device *dev) { … }
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