/*
* Copyright 2007-8 Advanced Micro Devices, Inc.
* Copyright 2008 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, 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Dave Airlie
* Alex Deucher
*/
#include <drm/drmP.h>
#include <drm/amdgpu_drm.h>
#include "amdgpu.h"
#include "amdgpu_atombios.h"
#include "amdgpu_i2c.h"
#include "atom.h"
#include "atom-bits.h"
#include "atombios_encoders.h"
#include "bif/bif_4_1_d.h"
static void amdgpu_atombios_lookup_i2c_gpio_quirks(struct amdgpu_device *adev,
ATOM_GPIO_I2C_ASSIGMENT *gpio,
u8 index)
{
}
static struct amdgpu_i2c_bus_rec amdgpu_atombios_get_bus_rec_for_i2c_gpio(ATOM_GPIO_I2C_ASSIGMENT *gpio)
{
struct amdgpu_i2c_bus_rec i2c;
memset(&i2c, 0, sizeof(struct amdgpu_i2c_bus_rec));
i2c.mask_clk_reg = le16_to_cpu(gpio->usClkMaskRegisterIndex);
i2c.mask_data_reg = le16_to_cpu(gpio->usDataMaskRegisterIndex);
i2c.en_clk_reg = le16_to_cpu(gpio->usClkEnRegisterIndex);
i2c.en_data_reg = le16_to_cpu(gpio->usDataEnRegisterIndex);
i2c.y_clk_reg = le16_to_cpu(gpio->usClkY_RegisterIndex);
i2c.y_data_reg = le16_to_cpu(gpio->usDataY_RegisterIndex);
i2c.a_clk_reg = le16_to_cpu(gpio->usClkA_RegisterIndex);
i2c.a_data_reg = le16_to_cpu(gpio->usDataA_RegisterIndex);
i2c.mask_clk_mask = (1 << gpio->ucClkMaskShift);
i2c.mask_data_mask = (1 << gpio->ucDataMaskShift);
i2c.en_clk_mask = (1 << gpio->ucClkEnShift);
i2c.en_data_mask = (1 << gpio->ucDataEnShift);
i2c.y_clk_mask = (1 << gpio->ucClkY_Shift);
i2c.y_data_mask = (1 << gpio->ucDataY_Shift);
i2c.a_clk_mask = (1 << gpio->ucClkA_Shift);
i2c.a_data_mask = (1 << gpio->ucDataA_Shift);
if (gpio->sucI2cId.sbfAccess.bfHW_Capable)
i2c.hw_capable = true;
else
i2c.hw_capable = false;
if (gpio->sucI2cId.ucAccess == 0xa0)
i2c.mm_i2c = true;
else
i2c.mm_i2c = false;
i2c.i2c_id = gpio->sucI2cId.ucAccess;
if (i2c.mask_clk_reg)
i2c.valid = true;
else
i2c.valid = false;
return i2c;
}
struct amdgpu_i2c_bus_rec amdgpu_atombios_lookup_i2c_gpio(struct amdgpu_device *adev,
uint8_t id)
{
struct atom_context *ctx = adev->mode_info.atom_context;
ATOM_GPIO_I2C_ASSIGMENT *gpio;
struct amdgpu_i2c_bus_rec i2c;
int index = GetIndexIntoMasterTable(DATA, GPIO_I2C_Info);
struct _ATOM_GPIO_I2C_INFO *i2c_info;
uint16_t data_offset, size;
int i, num_indices;
memset(&i2c, 0, sizeof(struct amdgpu_i2c_bus_rec));
i2c.valid = false;
if (amdgpu_atom_parse_data_header(ctx, index, &size, NULL, NULL, &data_offset)) {
i2c_info = (struct _ATOM_GPIO_I2C_INFO *)(ctx->bios + data_offset);
num_ind
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