diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/i2caux/dce110')
8 files changed, 1895 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/aux_engine_dce110.c b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/aux_engine_dce110.c new file mode 100644 index 0000000..0c4bbc1 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/aux_engine_dce110.c @@ -0,0 +1,470 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, 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: AMD + * + */ + +#include "dm_services.h" + +/* + * Pre-requisites: headers required by header of this unit + */ +#include "include/i2caux_interface.h" +#include "../engine.h" +#include "../aux_engine.h" + +/* + * Header of this unit + */ + +#include "aux_engine_dce110.h" + +/* + * Post-requisites: headers required by this unit + */ +#include "dce/dce_11_0_sh_mask.h" + +#define CTX \ + aux110->base.base.ctx +#define REG(reg_name)\ + (aux110->regs->reg_name) +#include "reg_helper.h" + +/* + * This unit + */ + +/* + * @brief + * Cast 'struct aux_engine *' + * to 'struct aux_engine_dce110 *' + */ +#define FROM_AUX_ENGINE(ptr) \ + container_of((ptr), struct aux_engine_dce110, base) + +/* + * @brief + * Cast 'struct engine *' + * to 'struct aux_engine_dce110 *' + */ +#define FROM_ENGINE(ptr) \ + FROM_AUX_ENGINE(container_of((ptr), struct aux_engine, base)) + +static void release_engine( + struct engine *engine) +{ + struct aux_engine_dce110 *aux110 = FROM_ENGINE(engine); + + REG_UPDATE(AUX_ARB_CONTROL, AUX_SW_DONE_USING_AUX_REG, 1); +} + +static void destruct( + struct aux_engine_dce110 *engine); + +static void destroy( + struct aux_engine **aux_engine) +{ + struct aux_engine_dce110 *engine = FROM_AUX_ENGINE(*aux_engine); + + destruct(engine); + + kfree(engine); + + *aux_engine = NULL; +} + +#define SW_CAN_ACCESS_AUX 1 +#define DMCU_CAN_ACCESS_AUX 2 + +static bool is_engine_available( + struct aux_engine *engine) +{ + struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(engine); + + uint32_t value = REG_READ(AUX_ARB_CONTROL); + uint32_t field = get_reg_field_value( + value, + AUX_ARB_CONTROL, + AUX_REG_RW_CNTL_STATUS); + + return (field != DMCU_CAN_ACCESS_AUX); +} +static bool acquire_engine( + struct aux_engine *engine) +{ + struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(engine); + + uint32_t value = REG_READ(AUX_ARB_CONTROL); + uint32_t field = get_reg_field_value( + value, + AUX_ARB_CONTROL, + AUX_REG_RW_CNTL_STATUS); + if (field == DMCU_CAN_ACCESS_AUX) + return false; + /* enable AUX before request SW to access AUX */ + value = REG_READ(AUX_CONTROL); + field = get_reg_field_value(value, + AUX_CONTROL, + AUX_EN); + + if (field == 0) { + set_reg_field_value( + value, + 1, + AUX_CONTROL, + AUX_EN); + + if (REG(AUX_RESET_MASK)) { + /*DP_AUX block as part of the enable sequence*/ + set_reg_field_value( + value, + 1, + AUX_CONTROL, + AUX_RESET); + } + + REG_WRITE(AUX_CONTROL, value); + + if (REG(AUX_RESET_MASK)) { + /*poll HW to make sure reset it done*/ + + REG_WAIT(AUX_CONTROL, AUX_RESET_DONE, 1, + 1, 11); + + set_reg_field_value( + value, + 0, + AUX_CONTROL, + AUX_RESET); + + REG_WRITE(AUX_CONTROL, value); + + REG_WAIT(AUX_CONTROL, AUX_RESET_DONE, 0, + 1, 11); + } + } /*if (field)*/ + + /* request SW to access AUX */ + REG_UPDATE(AUX_ARB_CONTROL, AUX_SW_USE_AUX_REG_REQ, 1); + + value = REG_READ(AUX_ARB_CONTROL); + field = get_reg_field_value( + value, + AUX_ARB_CONTROL, + AUX_REG_RW_CNTL_STATUS); + + return (field == SW_CAN_ACCESS_AUX); +} + +#define COMPOSE_AUX_SW_DATA_16_20(command, address) \ + ((command) | ((0xF0000 & (address)) >> 16)) + +#define COMPOSE_AUX_SW_DATA_8_15(address) \ + ((0xFF00 & (address)) >> 8) + +#define COMPOSE_AUX_SW_DATA_0_7(address) \ + (0xFF & (address)) + +static void submit_channel_request( + struct aux_engine *engine, + struct aux_request_transaction_data *request) +{ + struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(engine); + uint32_t value; + uint32_t length; + + bool is_write = + ((request->type == AUX_TRANSACTION_TYPE_DP) && + (request->action == I2CAUX_TRANSACTION_ACTION_DP_WRITE)) || + ((request->type == AUX_TRANSACTION_TYPE_I2C) && + ((request->action == I2CAUX_TRANSACTION_ACTION_I2C_WRITE) || + (request->action == I2CAUX_TRANSACTION_ACTION_I2C_WRITE_MOT))); + + /* clear_aux_error */ + REG_UPDATE_SEQ(AUXN_IMPCAL, AUXN_CALOUT_ERROR_AK, + 1, + 0); + + REG_UPDATE_SEQ(AUXP_IMPCAL, AUXP_CALOUT_ERROR_AK, + 1, + 0); + + /* force_default_calibrate */ + REG_UPDATE_1BY1_2(AUXN_IMPCAL, + AUXN_IMPCAL_ENABLE, 1, + AUXN_IMPCAL_OVERRIDE_ENABLE, 0); + + /* bug? why AUXN update EN and OVERRIDE_EN 1 by 1 while AUX P toggles OVERRIDE? */ + + REG_UPDATE_SEQ(AUXP_IMPCAL, AUXP_IMPCAL_OVERRIDE_ENABLE, + 1, + 0); + + /* set the delay and the number of bytes to write */ + + /* The length include + * the 4 bit header and the 20 bit address + * (that is 3 byte). + * If the requested length is non zero this means + * an addition byte specifying the length is required. */ + + length = request->length ? 4 : 3; + if (is_write) + length += request->length; + + REG_UPDATE_2(AUX_SW_CONTROL, + AUX_SW_START_DELAY, request->delay, + AUX_SW_WR_BYTES, length); + + /* program action and address and payload data (if 'is_write') */ + value = REG_UPDATE_4(AUX_SW_DATA, + AUX_SW_INDEX, 0, + AUX_SW_DATA_RW, 0, + AUX_SW_AUTOINCREMENT_DISABLE, 1, + AUX_SW_DATA, COMPOSE_AUX_SW_DATA_16_20(request->action, request->address)); + + value = REG_SET_2(AUX_SW_DATA, value, + AUX_SW_AUTOINCREMENT_DISABLE, 0, + AUX_SW_DATA, COMPOSE_AUX_SW_DATA_8_15(request->address)); + + value = REG_SET(AUX_SW_DATA, value, + AUX_SW_DATA, COMPOSE_AUX_SW_DATA_0_7(request->address)); + + if (request->length) { + value = REG_SET(AUX_SW_DATA, value, + AUX_SW_DATA, request->length - 1); + } + + if (is_write) { + /* Load the HW buffer with the Data to be sent. + * This is relevant for write operation. + * For read, the data recived data will be + * processed in process_channel_reply(). */ + uint32_t i = 0; + + while (i < request->length) { + value = REG_SET(AUX_SW_DATA, value, + AUX_SW_DATA, request->data[i]); + + ++i; + } + } + + REG_UPDATE(AUX_INTERRUPT_CONTROL, AUX_SW_DONE_ACK, 1); + REG_WAIT(AUX_SW_STATUS, AUX_SW_DONE, 0, + 10, aux110->timeout_period/10); + REG_UPDATE(AUX_SW_CONTROL, AUX_SW_GO, 1); +} + +static void process_channel_reply( + struct aux_engine *engine, + struct aux_reply_transaction_data *reply) +{ + struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(engine); + + /* Need to do a read to get the number of bytes to process + * Alternatively, this information can be passed - + * but that causes coupling which isn't good either. */ + + uint32_t bytes_replied; + uint32_t value; + + value = REG_GET(AUX_SW_STATUS, + AUX_SW_REPLY_BYTE_COUNT, &bytes_replied); + + if (bytes_replied) { + uint32_t reply_result; + + REG_UPDATE_1BY1_3(AUX_SW_DATA, + AUX_SW_INDEX, 0, + AUX_SW_AUTOINCREMENT_DISABLE, 1, + AUX_SW_DATA_RW, 1); + + REG_GET(AUX_SW_DATA, + AUX_SW_DATA, &reply_result); + + reply_result = reply_result >> 4; + + switch (reply_result) { + case 0: /* ACK */ { + uint32_t i = 0; + + /* first byte was already used + * to get the command status */ + --bytes_replied; + + while (i < bytes_replied) { + uint32_t aux_sw_data_val; + + REG_GET(AUX_SW_DATA, + AUX_SW_DATA, &aux_sw_data_val); + + reply->data[i] = aux_sw_data_val; + ++i; + } + + reply->status = AUX_TRANSACTION_REPLY_AUX_ACK; + } + break; + case 1: /* NACK */ + reply->status = AUX_TRANSACTION_REPLY_AUX_NACK; + break; + case 2: /* DEFER */ + reply->status = AUX_TRANSACTION_REPLY_AUX_DEFER; + break; + case 4: /* AUX ACK / I2C NACK */ + reply->status = AUX_TRANSACTION_REPLY_I2C_NACK; + break; + case 8: /* AUX ACK / I2C DEFER */ + reply->status = AUX_TRANSACTION_REPLY_I2C_DEFER; + break; + default: + reply->status = AUX_TRANSACTION_REPLY_INVALID; + } + } else { + /* Need to handle an error case... + * hopefully, upper layer function won't call this function + * if the number of bytes in the reply was 0 + * because there was surely an error that was asserted + * that should have been handled + * for hot plug case, this could happens*/ + if (!(value & AUX_SW_STATUS__AUX_SW_HPD_DISCON_MASK)) + ASSERT_CRITICAL(false); + } +} + +static enum aux_channel_operation_result get_channel_status( + struct aux_engine *engine, + uint8_t *returned_bytes) +{ + struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(engine); + + uint32_t value; + + if (returned_bytes == NULL) { + /*caller pass NULL pointer*/ + ASSERT_CRITICAL(false); + return AUX_CHANNEL_OPERATION_FAILED_REASON_UNKNOWN; + } + *returned_bytes = 0; + + /* poll to make sure that SW_DONE is asserted */ + value = REG_WAIT(AUX_SW_STATUS, AUX_SW_DONE, 1, + 10, aux110->timeout_period/10); + + /* Note that the following bits are set in 'status.bits' + * during CTS 4.2.1.2 (FW 3.3.1): + * AUX_SW_RX_MIN_COUNT_VIOL, AUX_SW_RX_INVALID_STOP, + * AUX_SW_RX_RECV_NO_DET, AUX_SW_RX_RECV_INVALID_H. + * + * AUX_SW_RX_MIN_COUNT_VIOL is an internal, + * HW debugging bit and should be ignored. */ + if (value & AUX_SW_STATUS__AUX_SW_DONE_MASK) { + if ((value & AUX_SW_STATUS__AUX_SW_RX_TIMEOUT_STATE_MASK) || + (value & AUX_SW_STATUS__AUX_SW_RX_TIMEOUT_MASK)) + return AUX_CHANNEL_OPERATION_FAILED_TIMEOUT; + + else if ((value & AUX_SW_STATUS__AUX_SW_RX_INVALID_STOP_MASK) || + (value & AUX_SW_STATUS__AUX_SW_RX_RECV_NO_DET_MASK) || + (value & + AUX_SW_STATUS__AUX_SW_RX_RECV_INVALID_H_MASK) || + (value & AUX_SW_STATUS__AUX_SW_RX_RECV_INVALID_L_MASK)) + return AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY; + + *returned_bytes = get_reg_field_value(value, + AUX_SW_STATUS, + AUX_SW_REPLY_BYTE_COUNT); + + if (*returned_bytes == 0) + return + AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY; + else { + *returned_bytes -= 1; + return AUX_CHANNEL_OPERATION_SUCCEEDED; + } + } else { + /*time_elapsed >= aux_engine->timeout_period */ + if (!(value & AUX_SW_STATUS__AUX_SW_HPD_DISCON_MASK)) + ASSERT_CRITICAL(false); + + return AUX_CHANNEL_OPERATION_FAILED_TIMEOUT; + } +} + +static const struct aux_engine_funcs aux_engine_funcs = { + .destroy = destroy, + .acquire_engine = acquire_engine, + .submit_channel_request = submit_channel_request, + .process_channel_reply = process_channel_reply, + .get_channel_status = get_channel_status, + .is_engine_available = is_engine_available, +}; + +static const struct engine_funcs engine_funcs = { + .release_engine = release_engine, + .submit_request = dal_aux_engine_submit_request, + .get_engine_type = dal_aux_engine_get_engine_type, + .acquire = dal_aux_engine_acquire, +}; + +static void construct( + struct aux_engine_dce110 *engine, + const struct aux_engine_dce110_init_data *aux_init_data) +{ + dal_aux_engine_construct(&engine->base, aux_init_data->ctx); + engine->base.base.funcs = &engine_funcs; + engine->base.funcs = &aux_engine_funcs; + + engine->timeout_period = aux_init_data->timeout_period; + engine->regs = aux_init_data->regs; +} + +static void destruct( + struct aux_engine_dce110 *engine) +{ + struct aux_engine_dce110 *aux110 = engine; +/*temp w/a, to do*/ + REG_UPDATE(AUX_ARB_CONTROL, AUX_DMCU_DONE_USING_AUX_REG, 1); + REG_UPDATE(AUX_ARB_CONTROL, AUX_SW_DONE_USING_AUX_REG, 1); + dal_aux_engine_destruct(&engine->base); +} + +struct aux_engine *dal_aux_engine_dce110_create( + const struct aux_engine_dce110_init_data *aux_init_data) +{ + struct aux_engine_dce110 *engine; + + if (!aux_init_data) { + ASSERT_CRITICAL(false); + return NULL; + } + + engine = kzalloc(sizeof(*engine), GFP_KERNEL); + + if (!engine) { + ASSERT_CRITICAL(false); + return NULL; + } + + construct(engine, aux_init_data); + return &engine->base; +} diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/aux_engine_dce110.h b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/aux_engine_dce110.h new file mode 100644 index 0000000..85ee821 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/aux_engine_dce110.h @@ -0,0 +1,78 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, 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: AMD + * + */ + +#ifndef __DAL_AUX_ENGINE_DCE110_H__ +#define __DAL_AUX_ENGINE_DCE110_H__ + +#include "../aux_engine.h" + +#define AUX_COMMON_REG_LIST(id)\ + SRI(AUX_CONTROL, DP_AUX, id), \ + SRI(AUX_ARB_CONTROL, DP_AUX, id), \ + SRI(AUX_SW_DATA, DP_AUX, id), \ + SRI(AUX_SW_CONTROL, DP_AUX, id), \ + SRI(AUX_INTERRUPT_CONTROL, DP_AUX, id), \ + SRI(AUX_SW_STATUS, DP_AUX, id), \ + SR(AUXN_IMPCAL), \ + SR(AUXP_IMPCAL) + +struct dce110_aux_registers { + uint32_t AUX_CONTROL; + uint32_t AUX_ARB_CONTROL; + uint32_t AUX_SW_DATA; + uint32_t AUX_SW_CONTROL; + uint32_t AUX_INTERRUPT_CONTROL; + uint32_t AUX_SW_STATUS; + uint32_t AUXN_IMPCAL; + uint32_t AUXP_IMPCAL; + + uint32_t AUX_RESET_MASK; +}; + +struct aux_engine_dce110 { + struct aux_engine base; + const struct dce110_aux_registers *regs; + struct { + uint32_t aux_control; + uint32_t aux_arb_control; + uint32_t aux_sw_data; + uint32_t aux_sw_control; + uint32_t aux_interrupt_control; + uint32_t aux_sw_status; + } addr; + uint32_t timeout_period; +}; + +struct aux_engine_dce110_init_data { + uint32_t engine_id; + uint32_t timeout_period; + struct dc_context *ctx; + const struct dce110_aux_registers *regs; +}; + +struct aux_engine *dal_aux_engine_dce110_create( + const struct aux_engine_dce110_init_data *aux_init_data); + +#endif diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c new file mode 100644 index 0000000..1a5b3f7 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.c @@ -0,0 +1,570 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, 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: AMD + * + */ + +#include "dm_services.h" +#include "include/logger_interface.h" +/* + * Pre-requisites: headers required by header of this unit + */ + +#include "include/i2caux_interface.h" +#include "../engine.h" +#include "../i2c_engine.h" +#include "../i2c_hw_engine.h" +#include "../i2c_generic_hw_engine.h" +/* + * Header of this unit + */ + +#include "i2c_hw_engine_dce110.h" + +/* + * Post-requisites: headers required by this unit + */ +#include "reg_helper.h" + +/* + * This unit + */ + +enum dc_i2c_status { + DC_I2C_STATUS__DC_I2C_STATUS_IDLE, + DC_I2C_STATUS__DC_I2C_STATUS_USED_BY_SW, + DC_I2C_STATUS__DC_I2C_STATUS_USED_BY_HW +}; + +enum dc_i2c_arbitration { + DC_I2C_ARBITRATION__DC_I2C_SW_PRIORITY_NORMAL, + DC_I2C_ARBITRATION__DC_I2C_SW_PRIORITY_HIGH +}; + +enum { + /* No timeout in HW + * (timeout implemented in SW by querying status) */ + I2C_SETUP_TIME_LIMIT = 255, + I2C_HW_BUFFER_SIZE = 538 +}; + +/* + * @brief + * Cast pointer to 'struct i2c_hw_engine *' + * to pointer 'struct i2c_hw_engine_dce110 *' + */ +#define FROM_I2C_HW_ENGINE(ptr) \ + container_of((ptr), struct i2c_hw_engine_dce110, base) +/* + * @brief + * Cast pointer to 'struct i2c_engine *' + * to pointer to 'struct i2c_hw_engine_dce110 *' + */ +#define FROM_I2C_ENGINE(ptr) \ + FROM_I2C_HW_ENGINE(container_of((ptr), struct i2c_hw_engine, base)) + +/* + * @brief + * Cast pointer to 'struct engine *' + * to 'pointer to struct i2c_hw_engine_dce110 *' + */ +#define FROM_ENGINE(ptr) \ + FROM_I2C_ENGINE(container_of((ptr), struct i2c_engine, base)) + +#define CTX \ + hw_engine->base.base.base.ctx + +#define REG(reg_name)\ + (hw_engine->regs->reg_name) + +#undef FN +#define FN(reg_name, field_name) \ + hw_engine->i2c_shift->field_name, hw_engine->i2c_mask->field_name + +#include "reg_helper.h" + +static void disable_i2c_hw_engine( + struct i2c_hw_engine_dce110 *hw_engine) +{ + REG_UPDATE_N(SETUP, 1, FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_ENABLE), 0); +} + +static void release_engine( + struct engine *engine) +{ + struct i2c_hw_engine_dce110 *hw_engine = FROM_ENGINE(engine); + + struct i2c_engine *base = NULL; + bool safe_to_reset; + + base = &hw_engine->base.base; + + /* Restore original HW engine speed */ + + base->funcs->set_speed(base, hw_engine->base.original_speed); + + /* Release I2C */ + REG_UPDATE(DC_I2C_ARBITRATION, DC_I2C_SW_DONE_USING_I2C_REG, 1); + + /* Reset HW engine */ + { + uint32_t i2c_sw_status = 0; + REG_GET(DC_I2C_SW_STATUS, DC_I2C_SW_STATUS, &i2c_sw_status); + /* if used by SW, safe to reset */ + safe_to_reset = (i2c_sw_status == 1); + } + + if (safe_to_reset) + REG_UPDATE_2( + DC_I2C_CONTROL, + DC_I2C_SOFT_RESET, 1, + DC_I2C_SW_STATUS_RESET, 1); + else + REG_UPDATE(DC_I2C_CONTROL, DC_I2C_SW_STATUS_RESET, 1); + + /* HW I2c engine - clock gating feature */ + if (!hw_engine->engine_keep_power_up_count) + disable_i2c_hw_engine(hw_engine); +} + +static bool setup_engine( + struct i2c_engine *i2c_engine) +{ + struct i2c_hw_engine_dce110 *hw_engine = FROM_I2C_ENGINE(i2c_engine); + + /* Program pin select */ + REG_UPDATE_6( + DC_I2C_CONTROL, + DC_I2C_GO, 0, + DC_I2C_SOFT_RESET, 0, + DC_I2C_SEND_RESET, 0, + DC_I2C_SW_STATUS_RESET, 1, + DC_I2C_TRANSACTION_COUNT, 0, + DC_I2C_DDC_SELECT, hw_engine->engine_id); + + /* Program time limit */ + REG_UPDATE_N( + SETUP, 2, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_TIME_LIMIT), I2C_SETUP_TIME_LIMIT, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_ENABLE), 1); + + /* Program HW priority + * set to High - interrupt software I2C at any time + * Enable restart of SW I2C that was interrupted by HW + * disable queuing of software while I2C is in use by HW */ + REG_UPDATE_2( + DC_I2C_ARBITRATION, + DC_I2C_NO_QUEUED_SW_GO, 0, + DC_I2C_SW_PRIORITY, DC_I2C_ARBITRATION__DC_I2C_SW_PRIORITY_NORMAL); + + return true; +} + +static uint32_t get_speed( + const struct i2c_engine *i2c_engine) +{ + const struct i2c_hw_engine_dce110 *hw_engine = FROM_I2C_ENGINE(i2c_engine); + uint32_t pre_scale = 0; + + REG_GET(SPEED, DC_I2C_DDC1_PRESCALE, &pre_scale); + + /* [anaumov] it seems following is unnecessary */ + /*ASSERT(value.bits.DC_I2C_DDC1_PRESCALE);*/ + return pre_scale ? + hw_engine->reference_frequency / pre_scale : + hw_engine->base.default_speed; +} + +static void set_speed( + struct i2c_engine *i2c_engine, + uint32_t speed) +{ + struct i2c_hw_engine_dce110 *hw_engine = FROM_I2C_ENGINE(i2c_engine); + + if (speed) { + if (hw_engine->i2c_mask->DC_I2C_DDC1_START_STOP_TIMING_CNTL) + REG_UPDATE_N( + SPEED, 3, + FN(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_PRESCALE), hw_engine->reference_frequency / speed, + FN(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_THRESHOLD), 2, + FN(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_START_STOP_TIMING_CNTL), speed > 50 ? 2:1); + else + REG_UPDATE_N( + SPEED, 2, + FN(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_PRESCALE), hw_engine->reference_frequency / speed, + FN(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_THRESHOLD), 2); + } +} + +static inline void reset_hw_engine(struct engine *engine) +{ + struct i2c_hw_engine_dce110 *hw_engine = FROM_ENGINE(engine); + + REG_UPDATE_2( + DC_I2C_CONTROL, + DC_I2C_SW_STATUS_RESET, 1, + DC_I2C_SW_STATUS_RESET, 1); +} + +static bool is_hw_busy(struct engine *engine) +{ + struct i2c_hw_engine_dce110 *hw_engine = FROM_ENGINE(engine); + uint32_t i2c_sw_status = 0; + + REG_GET(DC_I2C_SW_STATUS, DC_I2C_SW_STATUS, &i2c_sw_status); + if (i2c_sw_status == DC_I2C_STATUS__DC_I2C_STATUS_IDLE) + return false; + + reset_hw_engine(engine); + + REG_GET(DC_I2C_SW_STATUS, DC_I2C_SW_STATUS, &i2c_sw_status); + return i2c_sw_status != DC_I2C_STATUS__DC_I2C_STATUS_IDLE; +} + + +#define STOP_TRANS_PREDICAT \ + ((hw_engine->transaction_count == 3) || \ + (request->action == I2CAUX_TRANSACTION_ACTION_I2C_WRITE) || \ + (request->action & I2CAUX_TRANSACTION_ACTION_I2C_READ)) + +#define SET_I2C_TRANSACTION(id) \ + do { \ + REG_UPDATE_N(DC_I2C_TRANSACTION##id, 5, \ + FN(DC_I2C_TRANSACTION0, DC_I2C_STOP_ON_NACK0), 1, \ + FN(DC_I2C_TRANSACTION0, DC_I2C_START0), 1, \ + FN(DC_I2C_TRANSACTION0, DC_I2C_STOP0), STOP_TRANS_PREDICAT ? 1:0, \ + FN(DC_I2C_TRANSACTION0, DC_I2C_RW0), (0 != (request->action & I2CAUX_TRANSACTION_ACTION_I2C_READ)), \ + FN(DC_I2C_TRANSACTION0, DC_I2C_COUNT0), length); \ + if (STOP_TRANS_PREDICAT) \ + last_transaction = true; \ + } while (false) + + +static bool process_transaction( + struct i2c_hw_engine_dce110 *hw_engine, + struct i2c_request_transaction_data *request) +{ + uint32_t length = request->length; + uint8_t *buffer = request->data; + uint32_t value = 0; + + bool last_transaction = false; + + struct dc_context *ctx = NULL; + + ctx = hw_engine->base.base.base.ctx; + + + + switch (hw_engine->transaction_count) { + case 0: + SET_I2C_TRANSACTION(0); + break; + case 1: + SET_I2C_TRANSACTION(1); + break; + case 2: + SET_I2C_TRANSACTION(2); + break; + case 3: + SET_I2C_TRANSACTION(3); + break; + default: + /* TODO Warning ? */ + break; + } + + + /* Write the I2C address and I2C data + * into the hardware circular buffer, one byte per entry. + * As an example, the 7-bit I2C slave address for CRT monitor + * for reading DDC/EDID information is 0b1010001. + * For an I2C send operation, the LSB must be programmed to 0; + * for I2C receive operation, the LSB must be programmed to 1. */ + if (hw_engine->transaction_count == 0) { + value = REG_SET_4(DC_I2C_DATA, 0, + DC_I2C_DATA_RW, false, + DC_I2C_DATA, request->address, + DC_I2C_INDEX, 0, + DC_I2C_INDEX_WRITE, 1); + hw_engine->buffer_used_write = 0; + } else + value = REG_SET_2(DC_I2C_DATA, 0, + DC_I2C_DATA_RW, false, + DC_I2C_DATA, request->address); + + hw_engine->buffer_used_write++; + + if (!(request->action & I2CAUX_TRANSACTION_ACTION_I2C_READ)) { + while (length) { + REG_SET_2(DC_I2C_DATA, value, + DC_I2C_INDEX_WRITE, 0, + DC_I2C_DATA, *buffer++); + hw_engine->buffer_used_write++; + --length; + } + } + + ++hw_engine->transaction_count; + hw_engine->buffer_used_bytes += length + 1; + + return last_transaction; +} + +static void execute_transaction( + struct i2c_hw_engine_dce110 *hw_engine) +{ + REG_UPDATE_N(SETUP, 5, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_DATA_DRIVE_EN), 0, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_CLK_DRIVE_EN), 0, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_DATA_DRIVE_SEL), 0, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_INTRA_TRANSACTION_DELAY), 0, + FN(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_INTRA_BYTE_DELAY), 0); + + + REG_UPDATE_5(DC_I2C_CONTROL, + DC_I2C_SOFT_RESET, 0, + DC_I2C_SW_STATUS_RESET, 0, + DC_I2C_SEND_RESET, 0, + DC_I2C_GO, 0, + DC_I2C_TRANSACTION_COUNT, hw_engine->transaction_count - 1); + + /* start I2C transfer */ + REG_UPDATE(DC_I2C_CONTROL, DC_I2C_GO, 1); + + /* all transactions were executed and HW buffer became empty + * (even though it actually happens when status becomes DONE) */ + hw_engine->transaction_count = 0; + hw_engine->buffer_used_bytes = 0; +} + +static void submit_channel_request( + struct i2c_engine *engine, + struct i2c_request_transaction_data *request) +{ + request->status = I2C_CHANNEL_OPERATION_SUCCEEDED; + + if (!process_transaction(FROM_I2C_ENGINE(engine), request)) + return; + + if (is_hw_busy(&engine->base)) { + request->status = I2C_CHANNEL_OPERATION_ENGINE_BUSY; + return; + } + + execute_transaction(FROM_I2C_ENGINE(engine)); +} + +static void process_channel_reply( + struct i2c_engine *engine, + struct i2c_reply_transaction_data *reply) +{ + uint32_t length = reply->length; + uint8_t *buffer = reply->data; + + struct i2c_hw_engine_dce110 *hw_engine = + FROM_I2C_ENGINE(engine); + + + REG_SET_3(DC_I2C_DATA, 0, + DC_I2C_INDEX, hw_engine->buffer_used_write, + DC_I2C_DATA_RW, 1, + DC_I2C_INDEX_WRITE, 1); + + while (length) { + /* after reading the status, + * if the I2C operation executed successfully + * (i.e. DC_I2C_STATUS_DONE = 1) then the I2C controller + * should read data bytes from I2C circular data buffer */ + + uint32_t i2c_data; + + REG_GET(DC_I2C_DATA, DC_I2C_DATA, &i2c_data); + *buffer++ = i2c_data; + + --length; + } +} + +static enum i2c_channel_operation_result get_channel_status( + struct i2c_engine *i2c_engine, + uint8_t *returned_bytes) +{ + uint32_t i2c_sw_status = 0; + struct i2c_hw_engine_dce110 *hw_engine = FROM_I2C_ENGINE(i2c_engine); + uint32_t value = + REG_GET(DC_I2C_SW_STATUS, DC_I2C_SW_STATUS, &i2c_sw_status); + + if (i2c_sw_status == DC_I2C_STATUS__DC_I2C_STATUS_USED_BY_SW) + return I2C_CHANNEL_OPERATION_ENGINE_BUSY; + else if (value & hw_engine->i2c_mask->DC_I2C_SW_STOPPED_ON_NACK) + return I2C_CHANNEL_OPERATION_NO_RESPONSE; + else if (value & hw_engine->i2c_mask->DC_I2C_SW_TIMEOUT) + return I2C_CHANNEL_OPERATION_TIMEOUT; + else if (value & hw_engine->i2c_mask->DC_I2C_SW_ABORTED) + return I2C_CHANNEL_OPERATION_FAILED; + else if (value & hw_engine->i2c_mask->DC_I2C_SW_DONE) + return I2C_CHANNEL_OPERATION_SUCCEEDED; + + /* + * this is the case when HW used for communication, I2C_SW_STATUS + * could be zero + */ + return I2C_CHANNEL_OPERATION_SUCCEEDED; +} + +static uint32_t get_hw_buffer_available_size( + const struct i2c_hw_engine *engine) +{ + return I2C_HW_BUFFER_SIZE - + FROM_I2C_HW_ENGINE(engine)->buffer_used_bytes; +} + +static uint32_t get_transaction_timeout( + const struct i2c_hw_engine *engine, + uint32_t length) +{ + uint32_t speed = engine->base.funcs->get_speed(&engine->base); + + uint32_t period_timeout; + uint32_t num_of_clock_stretches; + + if (!speed) + return 0; + + period_timeout = (1000 * TRANSACTION_TIMEOUT_IN_I2C_CLOCKS) / speed; + + num_of_clock_stretches = 1 + (length << 3) + 1; + num_of_clock_stretches += + (FROM_I2C_HW_ENGINE(engine)->buffer_used_bytes << 3) + + (FROM_I2C_HW_ENGINE(engine)->transaction_count << 1); + + return period_timeout * num_of_clock_stretches; +} + +static void destroy( + struct i2c_engine **i2c_engine) +{ + struct i2c_hw_engine_dce110 *engine_dce110 = + FROM_I2C_ENGINE(*i2c_engine); + + dal_i2c_hw_engine_destruct(&engine_dce110->base); + + kfree(engine_dce110); + + *i2c_engine = NULL; +} + +static const struct i2c_engine_funcs i2c_engine_funcs = { + .destroy = destroy, + .get_speed = get_speed, + .set_speed = set_speed, + .setup_engine = setup_engine, + .submit_channel_request = submit_channel_request, + .process_channel_reply = process_channel_reply, + .get_channel_status = get_channel_status, + .acquire_engine = dal_i2c_hw_engine_acquire_engine, +}; + +static const struct engine_funcs engine_funcs = { + .release_engine = release_engine, + .get_engine_type = dal_i2c_hw_engine_get_engine_type, + .acquire = dal_i2c_engine_acquire, + .submit_request = dal_i2c_hw_engine_submit_request, +}; + +static const struct i2c_hw_engine_funcs i2c_hw_engine_funcs = { + .get_hw_buffer_available_size = get_hw_buffer_available_size, + .get_transaction_timeout = get_transaction_timeout, + .wait_on_operation_result = dal_i2c_hw_engine_wait_on_operation_result, +}; + +static void construct( + struct i2c_hw_engine_dce110 *hw_engine, + const struct i2c_hw_engine_dce110_create_arg *arg) +{ + uint32_t xtal_ref_div = 0; + + dal_i2c_hw_engine_construct(&hw_engine->base, arg->ctx); + + hw_engine->base.base.base.funcs = &engine_funcs; + hw_engine->base.base.funcs = &i2c_engine_funcs; + hw_engine->base.funcs = &i2c_hw_engine_funcs; + hw_engine->base.default_speed = arg->default_speed; + + hw_engine->regs = arg->regs; + hw_engine->i2c_shift = arg->i2c_shift; + hw_engine->i2c_mask = arg->i2c_mask; + + hw_engine->engine_id = arg->engine_id; + + hw_engine->buffer_used_bytes = 0; + hw_engine->transaction_count = 0; + hw_engine->engine_keep_power_up_count = 1; + + + REG_GET(MICROSECOND_TIME_BASE_DIV, XTAL_REF_DIV, &xtal_ref_div); + + if (xtal_ref_div == 0) { + dm_logger_write( + hw_engine->base.base.base.ctx->logger, LOG_WARNING, + "Invalid base timer divider\n", + __func__); + xtal_ref_div = 2; + } + + /*Calculating Reference Clock by divding original frequency by + * XTAL_REF_DIV. + * At upper level, uint32_t reference_frequency = + * dal_i2caux_get_reference_clock(as) >> 1 + * which already divided by 2. So we need x2 to get original + * reference clock from ppll_info + */ + hw_engine->reference_frequency = + (arg->reference_frequency * 2) / xtal_ref_div; +} + +struct i2c_engine *dal_i2c_hw_engine_dce110_create( + const struct i2c_hw_engine_dce110_create_arg *arg) +{ + struct i2c_hw_engine_dce110 *engine_dce10; + + if (!arg) { + ASSERT_CRITICAL(false); + return NULL; + } + if (!arg->reference_frequency) { + ASSERT_CRITICAL(false); + return NULL; + } + + engine_dce10 = kzalloc(sizeof(struct i2c_hw_engine_dce110), + GFP_KERNEL); + + if (!engine_dce10) { + ASSERT_CRITICAL(false); + return NULL; + } + + construct(engine_dce10, arg); + return &engine_dce10->base.base; +} diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.h b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.h new file mode 100644 index 0000000..5bb0408 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_hw_engine_dce110.h @@ -0,0 +1,210 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, 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: AMD + * + */ + +#ifndef __DAL_I2C_HW_ENGINE_DCE110_H__ +#define __DAL_I2C_HW_ENGINE_DCE110_H__ + +#define I2C_HW_ENGINE_COMMON_REG_LIST(id)\ + SRI(SETUP, DC_I2C_DDC, id),\ + SRI(SPEED, DC_I2C_DDC, id),\ + SR(DC_I2C_ARBITRATION),\ + SR(DC_I2C_CONTROL),\ + SR(DC_I2C_SW_STATUS),\ + SR(DC_I2C_TRANSACTION0),\ + SR(DC_I2C_TRANSACTION1),\ + SR(DC_I2C_TRANSACTION2),\ + SR(DC_I2C_TRANSACTION3),\ + SR(DC_I2C_DATA),\ + SR(MICROSECOND_TIME_BASE_DIV) + +#define I2C_SF(reg_name, field_name, post_fix)\ + .field_name = reg_name ## __ ## field_name ## post_fix + +#define I2C_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(mask_sh)\ + I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_ENABLE, mask_sh),\ + I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_TIME_LIMIT, mask_sh),\ + I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_DATA_DRIVE_EN, mask_sh),\ + I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_CLK_DRIVE_EN, mask_sh),\ + I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_DATA_DRIVE_SEL, mask_sh),\ + I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_INTRA_TRANSACTION_DELAY, mask_sh),\ + I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_INTRA_BYTE_DELAY, mask_sh),\ + I2C_SF(DC_I2C_ARBITRATION, DC_I2C_SW_DONE_USING_I2C_REG, mask_sh),\ + I2C_SF(DC_I2C_ARBITRATION, DC_I2C_NO_QUEUED_SW_GO, mask_sh),\ + I2C_SF(DC_I2C_ARBITRATION, DC_I2C_SW_PRIORITY, mask_sh),\ + I2C_SF(DC_I2C_CONTROL, DC_I2C_SOFT_RESET, mask_sh),\ + I2C_SF(DC_I2C_CONTROL, DC_I2C_SW_STATUS_RESET, mask_sh),\ + I2C_SF(DC_I2C_CONTROL, DC_I2C_GO, mask_sh),\ + I2C_SF(DC_I2C_CONTROL, DC_I2C_SEND_RESET, mask_sh),\ + I2C_SF(DC_I2C_CONTROL, DC_I2C_TRANSACTION_COUNT, mask_sh),\ + I2C_SF(DC_I2C_CONTROL, DC_I2C_DDC_SELECT, mask_sh),\ + I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_PRESCALE, mask_sh),\ + I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_THRESHOLD, mask_sh),\ + I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_STOPPED_ON_NACK, mask_sh),\ + I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_TIMEOUT, mask_sh),\ + I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_ABORTED, mask_sh),\ + I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_DONE, mask_sh),\ + I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_STATUS, mask_sh),\ + I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_STOP_ON_NACK0, mask_sh),\ + I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_START0, mask_sh),\ + I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_RW0, mask_sh),\ + I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_STOP0, mask_sh),\ + I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_COUNT0, mask_sh),\ + I2C_SF(DC_I2C_DATA, DC_I2C_DATA_RW, mask_sh),\ + I2C_SF(DC_I2C_DATA, DC_I2C_DATA, mask_sh),\ + I2C_SF(DC_I2C_DATA, DC_I2C_INDEX, mask_sh),\ + I2C_SF(DC_I2C_DATA, DC_I2C_INDEX_WRITE, mask_sh),\ + I2C_SF(MICROSECOND_TIME_BASE_DIV, XTAL_REF_DIV, mask_sh) + +#define I2C_COMMON_MASK_SH_LIST_DCE100(mask_sh)\ + I2C_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(mask_sh) + +#define I2C_COMMON_MASK_SH_LIST_DCE110(mask_sh)\ + I2C_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(mask_sh),\ + I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_START_STOP_TIMING_CNTL, mask_sh) + +struct dce110_i2c_hw_engine_shift { + uint8_t DC_I2C_DDC1_ENABLE; + uint8_t DC_I2C_DDC1_TIME_LIMIT; + uint8_t DC_I2C_DDC1_DATA_DRIVE_EN; + uint8_t DC_I2C_DDC1_CLK_DRIVE_EN; + uint8_t DC_I2C_DDC1_DATA_DRIVE_SEL; + uint8_t DC_I2C_DDC1_INTRA_TRANSACTION_DELAY; + uint8_t DC_I2C_DDC1_INTRA_BYTE_DELAY; + uint8_t DC_I2C_SW_DONE_USING_I2C_REG; + uint8_t DC_I2C_NO_QUEUED_SW_GO; + uint8_t DC_I2C_SW_PRIORITY; + uint8_t DC_I2C_SOFT_RESET; + uint8_t DC_I2C_SW_STATUS_RESET; + uint8_t DC_I2C_GO; + uint8_t DC_I2C_SEND_RESET; + uint8_t DC_I2C_TRANSACTION_COUNT; + uint8_t DC_I2C_DDC_SELECT; + uint8_t DC_I2C_DDC1_PRESCALE; + uint8_t DC_I2C_DDC1_THRESHOLD; + uint8_t DC_I2C_DDC1_START_STOP_TIMING_CNTL; + uint8_t DC_I2C_SW_STOPPED_ON_NACK; + uint8_t DC_I2C_SW_TIMEOUT; + uint8_t DC_I2C_SW_ABORTED; + uint8_t DC_I2C_SW_DONE; + uint8_t DC_I2C_SW_STATUS; + uint8_t DC_I2C_STOP_ON_NACK0; + uint8_t DC_I2C_START0; + uint8_t DC_I2C_RW0; + uint8_t DC_I2C_STOP0; + uint8_t DC_I2C_COUNT0; + uint8_t DC_I2C_DATA_RW; + uint8_t DC_I2C_DATA; + uint8_t DC_I2C_INDEX; + uint8_t DC_I2C_INDEX_WRITE; + uint8_t XTAL_REF_DIV; +}; + +struct dce110_i2c_hw_engine_mask { + uint32_t DC_I2C_DDC1_ENABLE; + uint32_t DC_I2C_DDC1_TIME_LIMIT; + uint32_t DC_I2C_DDC1_DATA_DRIVE_EN; + uint32_t DC_I2C_DDC1_CLK_DRIVE_EN; + uint32_t DC_I2C_DDC1_DATA_DRIVE_SEL; + uint32_t DC_I2C_DDC1_INTRA_TRANSACTION_DELAY; + uint32_t DC_I2C_DDC1_INTRA_BYTE_DELAY; + uint32_t DC_I2C_SW_DONE_USING_I2C_REG; + uint32_t DC_I2C_NO_QUEUED_SW_GO; + uint32_t DC_I2C_SW_PRIORITY; + uint32_t DC_I2C_SOFT_RESET; + uint32_t DC_I2C_SW_STATUS_RESET; + uint32_t DC_I2C_GO; + uint32_t DC_I2C_SEND_RESET; + uint32_t DC_I2C_TRANSACTION_COUNT; + uint32_t DC_I2C_DDC_SELECT; + uint32_t DC_I2C_DDC1_PRESCALE; + uint32_t DC_I2C_DDC1_THRESHOLD; + uint32_t DC_I2C_DDC1_START_STOP_TIMING_CNTL; + uint32_t DC_I2C_SW_STOPPED_ON_NACK; + uint32_t DC_I2C_SW_TIMEOUT; + uint32_t DC_I2C_SW_ABORTED; + uint32_t DC_I2C_SW_DONE; + uint32_t DC_I2C_SW_STATUS; + uint32_t DC_I2C_STOP_ON_NACK0; + uint32_t DC_I2C_START0; + uint32_t DC_I2C_RW0; + uint32_t DC_I2C_STOP0; + uint32_t DC_I2C_COUNT0; + uint32_t DC_I2C_DATA_RW; + uint32_t DC_I2C_DATA; + uint32_t DC_I2C_INDEX; + uint32_t DC_I2C_INDEX_WRITE; + uint32_t XTAL_REF_DIV; +}; + +struct dce110_i2c_hw_engine_registers { + uint32_t SETUP; + uint32_t SPEED; + uint32_t DC_I2C_ARBITRATION; + uint32_t DC_I2C_CONTROL; + uint32_t DC_I2C_SW_STATUS; + uint32_t DC_I2C_TRANSACTION0; + uint32_t DC_I2C_TRANSACTION1; + uint32_t DC_I2C_TRANSACTION2; + uint32_t DC_I2C_TRANSACTION3; + uint32_t DC_I2C_DATA; + uint32_t MICROSECOND_TIME_BASE_DIV; +}; + +struct i2c_hw_engine_dce110 { + struct i2c_hw_engine base; + const struct dce110_i2c_hw_engine_registers *regs; + const struct dce110_i2c_hw_engine_shift *i2c_shift; + const struct dce110_i2c_hw_engine_mask *i2c_mask; + struct { + uint32_t DC_I2C_DDCX_SETUP; + uint32_t DC_I2C_DDCX_SPEED; + } addr; + uint32_t engine_id; + /* expressed in kilohertz */ + uint32_t reference_frequency; + /* number of bytes currently used in HW buffer */ + uint32_t buffer_used_bytes; + /* number of bytes used for write transaction in HW buffer + * - this will be used as the index to read from*/ + uint32_t buffer_used_write; + /* number of pending transactions (before GO) */ + uint32_t transaction_count; + uint32_t engine_keep_power_up_count; +}; + +struct i2c_hw_engine_dce110_create_arg { + uint32_t engine_id; + uint32_t reference_frequency; + uint32_t default_speed; + struct dc_context *ctx; + const struct dce110_i2c_hw_engine_registers *regs; + const struct dce110_i2c_hw_engine_shift *i2c_shift; + const struct dce110_i2c_hw_engine_mask *i2c_mask; +}; + +struct i2c_engine *dal_i2c_hw_engine_dce110_create( + const struct i2c_hw_engine_dce110_create_arg *arg); + +#endif diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_sw_engine_dce110.c b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_sw_engine_dce110.c new file mode 100644 index 0000000..3aa7f79 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_sw_engine_dce110.c @@ -0,0 +1,160 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, 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: AMD + * + */ + +#include "dm_services.h" + +/* + * Pre-requisites: headers required by header of this unit + */ +#include "include/i2caux_interface.h" +#include "../engine.h" +#include "../i2c_engine.h" +#include "../i2c_sw_engine.h" + +/* + * Header of this unit + */ + +#include "i2c_sw_engine_dce110.h" + +/* + * Post-requisites: headers required by this unit + */ + +/* + * This unit + */ + +/* + * @brief + * Cast 'struct i2c_sw_engine *' + * to 'struct i2c_sw_engine_dce110 *' + */ +#define FROM_I2C_SW_ENGINE(ptr) \ + container_of((ptr), struct i2c_sw_engine_dce110, base) +/* + * @brief + * Cast 'struct i2c_engine *' + * to 'struct i2c_sw_engine_dce80 *' + */ +#define FROM_I2C_ENGINE(ptr) \ + FROM_I2C_SW_ENGINE(container_of((ptr), struct i2c_sw_engine, base)) + +/* + * @brief + * Cast 'struct engine *' + * to 'struct i2c_sw_engine_dce80 *' + */ +#define FROM_ENGINE(ptr) \ + FROM_I2C_ENGINE(container_of((ptr), struct i2c_engine, base)) + +static void release_engine( + struct engine *engine) +{ +} + +static void destruct( + struct i2c_sw_engine_dce110 *engine) +{ + dal_i2c_sw_engine_destruct(&engine->base); +} + +static void destroy( + struct i2c_engine **engine) +{ + struct i2c_sw_engine_dce110 *sw_engine = FROM_I2C_ENGINE(*engine); + + destruct(sw_engine); + + kfree(sw_engine); + + *engine = NULL; +} + +static bool acquire_engine( + struct i2c_engine *engine, + struct ddc *ddc_handle) +{ + return dal_i2caux_i2c_sw_engine_acquire_engine(engine, ddc_handle); +} + +static const struct i2c_engine_funcs i2c_engine_funcs = { + .acquire_engine = acquire_engine, + .destroy = destroy, + .get_speed = dal_i2c_sw_engine_get_speed, + .set_speed = dal_i2c_sw_engine_set_speed, + .setup_engine = dal_i2c_engine_setup_i2c_engine, + .submit_channel_request = dal_i2c_sw_engine_submit_channel_request, + .process_channel_reply = dal_i2c_engine_process_channel_reply, + .get_channel_status = dal_i2c_sw_engine_get_channel_status, +}; + +static const struct engine_funcs engine_funcs = { + .release_engine = release_engine, + .get_engine_type = dal_i2c_sw_engine_get_engine_type, + .acquire = dal_i2c_engine_acquire, + .submit_request = dal_i2c_sw_engine_submit_request, +}; + +static void construct( + struct i2c_sw_engine_dce110 *engine_dce110, + const struct i2c_sw_engine_dce110_create_arg *arg_dce110) +{ + struct i2c_sw_engine_create_arg arg_base; + + arg_base.ctx = arg_dce110->ctx; + arg_base.default_speed = arg_dce110->default_speed; + + dal_i2c_sw_engine_construct(&engine_dce110->base, &arg_base); + + /*struct engine struct engine_funcs*/ + engine_dce110->base.base.base.funcs = &engine_funcs; + /*struct i2c_engine struct i2c_engine_funcs*/ + engine_dce110->base.base.funcs = &i2c_engine_funcs; + engine_dce110->base.default_speed = arg_dce110->default_speed; + engine_dce110->engine_id = arg_dce110->engine_id; +} + +struct i2c_engine *dal_i2c_sw_engine_dce110_create( + const struct i2c_sw_engine_dce110_create_arg *arg) +{ + struct i2c_sw_engine_dce110 *engine_dce110; + + if (!arg) { + ASSERT_CRITICAL(false); + return NULL; + } + + engine_dce110 = kzalloc(sizeof(struct i2c_sw_engine_dce110), + GFP_KERNEL); + + if (!engine_dce110) { + ASSERT_CRITICAL(false); + return NULL; + } + + construct(engine_dce110, arg); + return &engine_dce110->base.base; +} diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_sw_engine_dce110.h b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_sw_engine_dce110.h new file mode 100644 index 0000000..c48c61f --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2c_sw_engine_dce110.h @@ -0,0 +1,43 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, 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: AMD + * + */ + +#ifndef __DAL_I2C_SW_ENGINE_DCE110_H__ +#define __DAL_I2C_SW_ENGINE_DCE110_H__ + +struct i2c_sw_engine_dce110 { + struct i2c_sw_engine base; + uint32_t engine_id; +}; + +struct i2c_sw_engine_dce110_create_arg { + uint32_t engine_id; + uint32_t default_speed; + struct dc_context *ctx; +}; + +struct i2c_engine *dal_i2c_sw_engine_dce110_create( + const struct i2c_sw_engine_dce110_create_arg *arg); + +#endif diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2caux_dce110.c b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2caux_dce110.c new file mode 100644 index 0000000..2a047f8 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2caux_dce110.c @@ -0,0 +1,311 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, 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: AMD + * + */ + +#include "dm_services.h" + +/* + * Pre-requisites: headers required by header of this unit + */ +#include "include/i2caux_interface.h" +#include "../i2caux.h" +#include "../engine.h" +#include "../i2c_engine.h" +#include "../i2c_sw_engine.h" +#include "../i2c_hw_engine.h" + +/* + * Header of this unit + */ +#include "i2caux_dce110.h" + +#include "i2c_sw_engine_dce110.h" +#include "i2c_hw_engine_dce110.h" +#include "aux_engine_dce110.h" + +/* + * Post-requisites: headers required by this unit + */ + +/* + * This unit + */ +/*cast pointer to struct i2caux TO pointer to struct i2caux_dce110*/ +#define FROM_I2C_AUX(ptr) \ + container_of((ptr), struct i2caux_dce110, base) + +static void destruct( + struct i2caux_dce110 *i2caux_dce110) +{ + dal_i2caux_destruct(&i2caux_dce110->base); +} + +static void destroy( + struct i2caux **i2c_engine) +{ + struct i2caux_dce110 *i2caux_dce110 = FROM_I2C_AUX(*i2c_engine); + + destruct(i2caux_dce110); + + kfree(i2caux_dce110); + + *i2c_engine = NULL; +} + +static struct i2c_engine *acquire_i2c_hw_engine( + struct i2caux *i2caux, + struct ddc *ddc) +{ + struct i2caux_dce110 *i2caux_dce110 = FROM_I2C_AUX(i2caux); + + struct i2c_engine *engine = NULL; + /* generic hw engine is not used for EDID read + * It may be needed for external i2c device, like thermal chip, + * TODO will be implemented when needed. + * check dce80 bool non_generic for generic hw engine; + */ + + if (!ddc) + return NULL; + + if (ddc->hw_info.hw_supported) { + enum gpio_ddc_line line = dal_ddc_get_line(ddc); + + if (line < GPIO_DDC_LINE_COUNT) + engine = i2caux->i2c_hw_engines[line]; + } + + if (!engine) + return NULL; + + if (!i2caux_dce110->i2c_hw_buffer_in_use && + engine->base.funcs->acquire(&engine->base, ddc)) { + i2caux_dce110->i2c_hw_buffer_in_use = true; + return engine; + } + + return NULL; +} + +static void release_engine( + struct i2caux *i2caux, + struct engine *engine) +{ + struct i2caux_dce110 *i2caux_dce110 = FROM_I2C_AUX(i2caux); + + if (engine->funcs->get_engine_type(engine) == + I2CAUX_ENGINE_TYPE_I2C_DDC_HW) + i2caux_dce110->i2c_hw_buffer_in_use = false; + + dal_i2caux_release_engine(i2caux, engine); +} + +static const enum gpio_ddc_line hw_ddc_lines[] = { + GPIO_DDC_LINE_DDC1, + GPIO_DDC_LINE_DDC2, + GPIO_DDC_LINE_DDC3, + GPIO_DDC_LINE_DDC4, + GPIO_DDC_LINE_DDC5, + GPIO_DDC_LINE_DDC6, +}; + +static const enum gpio_ddc_line hw_aux_lines[] = { + GPIO_DDC_LINE_DDC1, + GPIO_DDC_LINE_DDC2, + GPIO_DDC_LINE_DDC3, + GPIO_DDC_LINE_DDC4, + GPIO_DDC_LINE_DDC5, + GPIO_DDC_LINE_DDC6, +}; + +/* function table */ +static const struct i2caux_funcs i2caux_funcs = { + .destroy = destroy, + .acquire_i2c_hw_engine = acquire_i2c_hw_engine, + .release_engine = release_engine, + .acquire_i2c_sw_engine = dal_i2caux_acquire_i2c_sw_engine, + .acquire_aux_engine = dal_i2caux_acquire_aux_engine, +}; + +#include "dce/dce_11_0_d.h" +#include "dce/dce_11_0_sh_mask.h" + +/* set register offset */ +#define SR(reg_name)\ + .reg_name = mm ## reg_name + +/* set register offset with instance */ +#define SRI(reg_name, block, id)\ + .reg_name = mm ## block ## id ## _ ## reg_name + +#define aux_regs(id)\ +[id] = {\ + AUX_COMMON_REG_LIST(id), \ + .AUX_RESET_MASK = AUX_CONTROL__AUX_RESET_MASK \ +} + +#define hw_engine_regs(id)\ +{\ + I2C_HW_ENGINE_COMMON_REG_LIST(id) \ +} + +static const struct dce110_aux_registers dce110_aux_regs[] = { + aux_regs(0), + aux_regs(1), + aux_regs(2), + aux_regs(3), + aux_regs(4), + aux_regs(5) +}; + +static const struct dce110_i2c_hw_engine_registers i2c_hw_engine_regs[] = { + hw_engine_regs(1), + hw_engine_regs(2), + hw_engine_regs(3), + hw_engine_regs(4), + hw_engine_regs(5), + hw_engine_regs(6) +}; + +static const struct dce110_i2c_hw_engine_shift i2c_shift = { + I2C_COMMON_MASK_SH_LIST_DCE110(__SHIFT) +}; + +static const struct dce110_i2c_hw_engine_mask i2c_mask = { + I2C_COMMON_MASK_SH_LIST_DCE110(_MASK) +}; + +void dal_i2caux_dce110_construct( + struct i2caux_dce110 *i2caux_dce110, + struct dc_context *ctx, + const struct dce110_aux_registers aux_regs[], + const struct dce110_i2c_hw_engine_registers i2c_hw_engine_regs[], + const struct dce110_i2c_hw_engine_shift *i2c_shift, + const struct dce110_i2c_hw_engine_mask *i2c_mask) +{ + uint32_t i = 0; + uint32_t reference_frequency = 0; + bool use_i2c_sw_engine = false; + struct i2caux *base = NULL; + /*TODO: For CZ bring up, if dal_i2caux_get_reference_clock + * does not return 48KHz, we need hard coded for 48Khz. + * Some BIOS setting incorrect cause this + * For production, we always get value from BIOS*/ + reference_frequency = + dal_i2caux_get_reference_clock(ctx->dc_bios) >> 1; + + base = &i2caux_dce110->base; + + dal_i2caux_construct(base, ctx); + + i2caux_dce110->base.funcs = &i2caux_funcs; + i2caux_dce110->i2c_hw_buffer_in_use = false; + /* Create I2C engines (DDC lines per connector) + * different I2C/AUX usage cases, DDC, Generic GPIO, AUX. + */ + do { + enum gpio_ddc_line line_id = hw_ddc_lines[i]; + + struct i2c_hw_engine_dce110_create_arg hw_arg_dce110; + + if (use_i2c_sw_engine) { + struct i2c_sw_engine_dce110_create_arg sw_arg; + + sw_arg.engine_id = i; + sw_arg.default_speed = base->default_i2c_sw_speed; + sw_arg.ctx = ctx; + base->i2c_sw_engines[line_id] = + dal_i2c_sw_engine_dce110_create(&sw_arg); + } + + hw_arg_dce110.engine_id = i; + hw_arg_dce110.reference_frequency = reference_frequency; + hw_arg_dce110.default_speed = base->default_i2c_hw_speed; + hw_arg_dce110.ctx = ctx; + hw_arg_dce110.regs = &i2c_hw_engine_regs[i]; + hw_arg_dce110.i2c_shift = i2c_shift; + hw_arg_dce110.i2c_mask = i2c_mask; + + base->i2c_hw_engines[line_id] = + dal_i2c_hw_engine_dce110_create(&hw_arg_dce110); + + ++i; + } while (i < ARRAY_SIZE(hw_ddc_lines)); + + /* Create AUX engines for all lines which has assisted HW AUX + * 'i' (loop counter) used as DDC/AUX engine_id */ + + i = 0; + + do { + enum gpio_ddc_line line_id = hw_aux_lines[i]; + + struct aux_engine_dce110_init_data aux_init_data; + + aux_init_data.engine_id = i; + aux_init_data.timeout_period = base->aux_timeout_period; + aux_init_data.ctx = ctx; + aux_init_data.regs = &aux_regs[i]; + + base->aux_engines[line_id] = + dal_aux_engine_dce110_create(&aux_init_data); + + ++i; + } while (i < ARRAY_SIZE(hw_aux_lines)); + + /*TODO Generic I2C SW and HW*/ +} + +/* + * dal_i2caux_dce110_create + * + * @brief + * public interface to allocate memory for DCE11 I2CAUX + * + * @param + * struct adapter_service *as - [in] + * struct dc_context *ctx - [in] + * + * @return + * pointer to the base struct of DCE11 I2CAUX + */ +struct i2caux *dal_i2caux_dce110_create( + struct dc_context *ctx) +{ + struct i2caux_dce110 *i2caux_dce110 = + kzalloc(sizeof(struct i2caux_dce110), GFP_KERNEL); + + if (!i2caux_dce110) { + ASSERT_CRITICAL(false); + return NULL; + } + + dal_i2caux_dce110_construct(i2caux_dce110, + ctx, + dce110_aux_regs, + i2c_hw_engine_regs, + &i2c_shift, + &i2c_mask); + return &i2caux_dce110->base; +} diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2caux_dce110.h b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2caux_dce110.h new file mode 100644 index 0000000..1b1f71c --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/i2caux/dce110/i2caux_dce110.h @@ -0,0 +1,53 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, 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: AMD + * + */ + +#ifndef __DAL_I2C_AUX_DCE110_H__ +#define __DAL_I2C_AUX_DCE110_H__ + +#include "../i2caux.h" + +struct i2caux_dce110 { + struct i2caux base; + /* indicate the I2C HW circular buffer is in use */ + bool i2c_hw_buffer_in_use; +}; + +struct dce110_aux_registers; +struct dce110_i2c_hw_engine_registers; +struct dce110_i2c_hw_engine_shift; +struct dce110_i2c_hw_engine_mask; + +struct i2caux *dal_i2caux_dce110_create( + struct dc_context *ctx); + +void dal_i2caux_dce110_construct( + struct i2caux_dce110 *i2caux_dce110, + struct dc_context *ctx, + const struct dce110_aux_registers *aux_regs, + const struct dce110_i2c_hw_engine_registers *i2c_hw_engine_regs, + const struct dce110_i2c_hw_engine_shift *i2c_shift, + const struct dce110_i2c_hw_engine_mask *i2c_mask); + +#endif /* __DAL_I2C_AUX_DCE110_H__ */ |
