From: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx>
[Why]
Aux engine is created from i2caux layer. We want to remove this layer
and use the engine directly.
[How]
Decouple aux engine from i2caux. Move aux engine related code to dce folder and use
dc resource pool to manage the engine. And use the engine functions directly
Change-Id: Iecb609fe815dab31ed6b6100916c4b49ed6539a0
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha at amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland at amd.com>
Acked-by: Leo Li <sunpeng.li at amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | 22 +-
drivers/gpu/drm/amd/display/dc/dce/Makefile | 2 +-
drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 942 +++++++++++++++++++++
drivers/gpu/drm/amd/display/dc/dce/dce_aux.h | 111 +++
.../drm/amd/display/dc/dce100/dce100_resource.c | 42 +
.../drm/amd/display/dc/dce110/dce110_resource.c | 45 +
.../drm/amd/display/dc/dce112/dce112_resource.c | 47 +
.../drm/amd/display/dc/dce120/dce120_resource.c | 42 +
.../gpu/drm/amd/display/dc/dce80/dce80_resource.c | 44 +
.../gpu/drm/amd/display/dc/dcn10/dcn10_resource.c | 44 +
drivers/gpu/drm/amd/display/dc/i2caux/engine.h | 1 +
drivers/gpu/drm/amd/display/dc/inc/core_types.h | 2 +-
drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h | 113 +++
drivers/gpu/drm/amd/display/dc/inc/hw/engine.h | 106 +++
14 files changed, 1549 insertions(+), 14 deletions(-)
create mode 100644 drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
create mode 100644 drivers/gpu/drm/amd/display/dc/dce/dce_aux.h
create mode 100644 drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h
create mode 100644 drivers/gpu/drm/amd/display/dc/inc/hw/engine.h
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
index 08c9d73..4019fe07 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
@@ -33,10 +33,8 @@
#include "include/vector.h"
#include "core_types.h"
#include "dc_link_ddc.h"
-#include "i2caux/engine.h"
-#include "i2caux/i2c_engine.h"
-#include "i2caux/aux_engine.h"
-#include "i2caux/i2caux.h"
+#include "engine.h"
+#include "aux_engine.h"
#define AUX_POWER_UP_WA_DELAY 500
#define I2C_OVER_AUX_DEFER_WA_DELAY 70
@@ -641,9 +639,9 @@ int dc_link_aux_transfer(struct ddc_service *ddc,
enum aux_transaction_type type,
enum i2caux_transaction_action action)
{
- struct i2caux *i2caux = ddc->ctx->i2caux;
struct ddc *ddc_pin = ddc->ddc_pin;
- struct aux_engine *engine;
+ struct engine *engine;
+ struct aux_engine *aux_engine;
enum aux_channel_operation_result operation_result;
struct aux_request_transaction_data aux_req;
struct aux_reply_transaction_data aux_rep;
@@ -654,7 +652,8 @@ int dc_link_aux_transfer(struct ddc_service *ddc,
memset(&aux_req, 0, sizeof(aux_req));
memset(&aux_rep, 0, sizeof(aux_rep));
- engine = i2caux->funcs->acquire_aux_engine(i2caux, ddc_pin);
+ engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en];
+ aux_engine = engine->funcs->acquire(engine, ddc_pin);
aux_req.type = type;
aux_req.action = action;
@@ -664,15 +663,15 @@ int dc_link_aux_transfer(struct ddc_service *ddc,
aux_req.length = size;
aux_req.data = buffer;
- engine->funcs->submit_channel_request(engine, &aux_req);
- operation_result = engine->funcs->get_channel_status(engine, &returned_bytes);
+ aux_engine->funcs->submit_channel_request(aux_engine, &aux_req);
+ operation_result = aux_engine->funcs->get_channel_status(aux_engine, &returned_bytes);
switch (operation_result) {
case AUX_CHANNEL_OPERATION_SUCCEEDED:
res = returned_bytes;
if (res <= size && res >= 0)
- res = engine->funcs->read_channel_reply(engine, size,
+ res = aux_engine->funcs->read_channel_reply(aux_engine, size,
buffer, reply,
&status);
@@ -686,8 +685,7 @@ int dc_link_aux_transfer(struct ddc_service *ddc,
res = -1;
break;
}
-
- i2caux->funcs->release_engine(i2caux, &engine->base);
+ aux_engine->base.funcs->release_engine(&aux_engine->base);
return res;
}
diff --git a/drivers/gpu/drm/amd/display/dc/dce/Makefile b/drivers/gpu/drm/amd/display/dc/dce/Makefile
index 11401fd..825537b 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dce/Makefile
@@ -28,7 +28,7 @@
DCE = dce_audio.o dce_stream_encoder.o dce_link_encoder.o dce_hwseq.o \
dce_mem_input.o dce_clock_source.o dce_scl_filters.o dce_transform.o \
-dce_clocks.o dce_opp.o dce_dmcu.o dce_abm.o dce_ipp.o
+dce_clocks.o dce_opp.o dce_dmcu.o dce_abm.o dce_ipp.o dce_aux.o
AMD_DAL_DCE = $(addprefix $(AMDDALPATH)/dc/dce/,$(DCE))
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
new file mode 100644
index 0000000..b28e212
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
@@ -0,0 +1,942 @@
+/*
+ * 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 "dce_aux.h"
+#include "dce/dce_11_0_sh_mask.h"
+
+#define CTX \
+ aux110->base.base.ctx
+#define REG(reg_name)\
+ (aux110->regs->reg_name)
+
+#define DC_LOGGER \
+ engine->base.ctx->logger
+
+#include "reg_helper.h"
+
+#define FROM_AUX_ENGINE(ptr) \
+ container_of((ptr), struct aux_engine_dce110, base)
+
+#define FROM_ENGINE(ptr) \
+ FROM_AUX_ENGINE(container_of((ptr), struct aux_engine, base))
+
+#define FROM_AUX_ENGINE_ENGINE(ptr) \
+ container_of((ptr), struct aux_engine, base)
+enum {
+ AUX_INVALID_REPLY_RETRY_COUNTER = 1,
+ AUX_TIMED_OUT_RETRY_COUNTER = 2,
+ AUX_DEFER_RETRY_COUNTER = 6
+};
+static void release_engine(
+ struct engine *engine)
+{
+ struct aux_engine_dce110 *aux110 = FROM_ENGINE(engine);
+
+ dal_ddc_close(engine->ddc);
+
+ engine->ddc = NULL;
+
+ REG_UPDATE(AUX_ARB_CONTROL, AUX_SW_DONE_USING_AUX_REG, 1);
+}
+
+#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)));
+ if (REG(AUXN_IMPCAL)) {
+ /* 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 int read_channel_reply(struct aux_engine *engine, uint32_t size,
+ uint8_t *buffer, uint8_t *reply_result,
+ uint32_t *sw_status)
+{
+ struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(engine);
+ uint32_t bytes_replied;
+ uint32_t reply_result_32;
+
+ *sw_status = REG_GET(AUX_SW_STATUS, AUX_SW_REPLY_BYTE_COUNT,
+ &bytes_replied);
+
+ /* In case HPD is LOW, exit AUX transaction */
+ if ((*sw_status & AUX_SW_STATUS__AUX_SW_HPD_DISCON_MASK))
+ return -1;
+
+ /* Need at least the status byte */
+ if (!bytes_replied)
+ return -1;
+
+ 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_32);
+ reply_result_32 = reply_result_32 >> 4;
+ *reply_result = (uint8_t)reply_result_32;
+
+ if (reply_result_32 == 0) { /* ACK */
+ uint32_t i = 0;
+
+ /* First byte was already used to get the command status */
+ --bytes_replied;
+
+ /* Do not overflow buffer */
+ if (bytes_replied > size)
+ return -1;
+
+ while (i < bytes_replied) {
+ uint32_t aux_sw_data_val;
+
+ REG_GET(AUX_SW_DATA, AUX_SW_DATA, &aux_sw_data_val);
+ buffer[i] = aux_sw_data_val;
+ ++i;
+ }
+
+ return i;
+ }
+
+ return 0;
+}
+
+static void process_channel_reply(
+ struct aux_engine *engine,
+ struct aux_reply_transaction_data *reply)
+{
+ int bytes_replied;
+ uint8_t reply_result;
+ uint32_t sw_status;
+
+ bytes_replied = read_channel_reply(engine, reply->length, reply->data,
+ &reply_result, &sw_status);
+
+ /* in case HPD is LOW, exit AUX transaction */
+ if ((sw_status & AUX_SW_STATUS__AUX_SW_HPD_DISCON_MASK)) {
+ reply->status = AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON;
+ return;
+ }
+
+ if (bytes_replied < 0) {
+ /* 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 (!(sw_status & AUX_SW_STATUS__AUX_SW_HPD_DISCON_MASK)) {
+ reply->status = AUX_TRANSACTION_REPLY_INVALID;
+ ASSERT_CRITICAL(false);
+ return;
+ }
+ } else {
+
+ switch (reply_result) {
+ case 0: /* ACK */
+ 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;
+ }
+ }
+}
+
+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);
+
+ /* in case HPD is LOW, exit AUX transaction */
+ if ((value & AUX_SW_STATUS__AUX_SW_HPD_DISCON_MASK))
+ return AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON;
+
+ /* 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
+ * AUX_SW_STATUS__AUX_SW_HPD_DISCON = at this point
+ */
+ ASSERT_CRITICAL(false);
+ return AUX_CHANNEL_OPERATION_FAILED_TIMEOUT;
+ }
+}
+static void process_read_reply(
+ struct aux_engine *engine,
+ struct read_command_context *ctx)
+{
+ engine->funcs->process_channel_reply(engine, &ctx->reply);
+
+ switch (ctx->reply.status) {
+ case AUX_TRANSACTION_REPLY_AUX_ACK:
+ ctx->defer_retry_aux = 0;
+ if (ctx->returned_byte > ctx->current_read_length) {
+ ctx->status =
+ I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR;
+ ctx->operation_succeeded = false;
+ } else if (ctx->returned_byte < ctx->current_read_length) {
+ ctx->current_read_length -= ctx->returned_byte;
+
+ ctx->offset += ctx->returned_byte;
+
+ ++ctx->invalid_reply_retry_aux_on_ack;
+
+ if (ctx->invalid_reply_retry_aux_on_ack >
+ AUX_INVALID_REPLY_RETRY_COUNTER) {
+ ctx->status =
+ I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR;
+ ctx->operation_succeeded = false;
+ }
+ } else {
+ ctx->status = I2CAUX_TRANSACTION_STATUS_SUCCEEDED;
+ ctx->transaction_complete = true;
+ ctx->operation_succeeded = true;
+ }
+ break;
+ case AUX_TRANSACTION_REPLY_AUX_NACK:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_NACK;
+ ctx->operation_succeeded = false;
+ break;
+ case AUX_TRANSACTION_REPLY_AUX_DEFER:
+ ++ctx->defer_retry_aux;
+
+ if (ctx->defer_retry_aux > AUX_DEFER_RETRY_COUNTER) {
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT;
+ ctx->operation_succeeded = false;
+ }
+ break;
+ case AUX_TRANSACTION_REPLY_I2C_DEFER:
+ ctx->defer_retry_aux = 0;
+
+ ++ctx->defer_retry_i2c;
+
+ if (ctx->defer_retry_i2c > AUX_DEFER_RETRY_COUNTER) {
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT;
+ ctx->operation_succeeded = false;
+ }
+ break;
+ case AUX_TRANSACTION_REPLY_HPD_DISCON:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON;
+ ctx->operation_succeeded = false;
+ break;
+ default:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_UNKNOWN;
+ ctx->operation_succeeded = false;
+ }
+}
+static void process_read_request(
+ struct aux_engine *engine,
+ struct read_command_context *ctx)
+{
+ enum aux_channel_operation_result operation_result;
+
+ engine->funcs->submit_channel_request(engine, &ctx->request);
+
+ operation_result = engine->funcs->get_channel_status(
+ engine, &ctx->returned_byte);
+
+ switch (operation_result) {
+ case AUX_CHANNEL_OPERATION_SUCCEEDED:
+ if (ctx->returned_byte > ctx->current_read_length) {
+ ctx->status =
+ I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR;
+ ctx->operation_succeeded = false;
+ } else {
+ ctx->timed_out_retry_aux = 0;
+ ctx->invalid_reply_retry_aux = 0;
+
+ ctx->reply.length = ctx->returned_byte;
+ ctx->reply.data = ctx->buffer;
+
+ process_read_reply(engine, ctx);
+ }
+ break;
+ case AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY:
+ ++ctx->invalid_reply_retry_aux;
+
+ if (ctx->invalid_reply_retry_aux >
+ AUX_INVALID_REPLY_RETRY_COUNTER) {
+ ctx->status =
+ I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR;
+ ctx->operation_succeeded = false;
+ } else
+ udelay(400);
+ break;
+ case AUX_CHANNEL_OPERATION_FAILED_TIMEOUT:
+ ++ctx->timed_out_retry_aux;
+
+ if (ctx->timed_out_retry_aux > AUX_TIMED_OUT_RETRY_COUNTER) {
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT;
+ ctx->operation_succeeded = false;
+ } else {
+ /* DP 1.2a, table 2-58:
+ * "S3: AUX Request CMD PENDING:
+ * retry 3 times, with 400usec wait on each"
+ * The HW timeout is set to 550usec,
+ * so we should not wait here
+ */
+ }
+ break;
+ case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON;
+ ctx->operation_succeeded = false;
+ break;
+ default:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_UNKNOWN;
+ ctx->operation_succeeded = false;
+ }
+}
+static bool read_command(
+ struct aux_engine *engine,
+ struct i2caux_transaction_request *request,
+ bool middle_of_transaction)
+{
+ struct read_command_context ctx;
+
+ ctx.buffer = request->payload.data;
+ ctx.current_read_length = request->payload.length;
+ ctx.offset = 0;
+ ctx.timed_out_retry_aux = 0;
+ ctx.invalid_reply_retry_aux = 0;
+ ctx.defer_retry_aux = 0;
+ ctx.defer_retry_i2c = 0;
+ ctx.invalid_reply_retry_aux_on_ack = 0;
+ ctx.transaction_complete = false;
+ ctx.operation_succeeded = true;
+
+ if (request->payload.address_space ==
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD) {
+ ctx.request.type = AUX_TRANSACTION_TYPE_DP;
+ ctx.request.action = I2CAUX_TRANSACTION_ACTION_DP_READ;
+ ctx.request.address = request->payload.address;
+ } else if (request->payload.address_space ==
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_I2C) {
+ ctx.request.type = AUX_TRANSACTION_TYPE_I2C;
+ ctx.request.action = middle_of_transaction ?
+ I2CAUX_TRANSACTION_ACTION_I2C_READ_MOT :
+ I2CAUX_TRANSACTION_ACTION_I2C_READ;
+ ctx.request.address = request->payload.address >> 1;
+ } else {
+ /* in DAL2, there was no return in such case */
+ BREAK_TO_DEBUGGER();
+ return false;
+ }
+
+ ctx.request.delay = 0;
+
+ do {
+ memset(ctx.buffer + ctx.offset, 0, ctx.current_read_length);
+
+ ctx.request.data = ctx.buffer + ctx.offset;
+ ctx.request.length = ctx.current_read_length;
+
+ process_read_request(engine, &ctx);
+
+ request->status = ctx.status;
+
+ if (ctx.operation_succeeded && !ctx.transaction_complete)
+ if (ctx.request.type == AUX_TRANSACTION_TYPE_I2C)
+ msleep(engine->delay);
+ } while (ctx.operation_succeeded && !ctx.transaction_complete);
+
+ if (request->payload.address_space ==
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD) {
+ DC_LOG_I2C_AUX("READ: addr:0x%x value:0x%x Result:%d",
+ request->payload.address,
+ request->payload.data[0],
+ ctx.operation_succeeded);
+ }
+
+ return ctx.operation_succeeded;
+}
+
+static void process_write_reply(
+ struct aux_engine *engine,
+ struct write_command_context *ctx)
+{
+ engine->funcs->process_channel_reply(engine, &ctx->reply);
+
+ switch (ctx->reply.status) {
+ case AUX_TRANSACTION_REPLY_AUX_ACK:
+ ctx->operation_succeeded = true;
+
+ if (ctx->returned_byte) {
+ ctx->request.action = ctx->mot ?
+ I2CAUX_TRANSACTION_ACTION_I2C_STATUS_REQUEST_MOT :
+ I2CAUX_TRANSACTION_ACTION_I2C_STATUS_REQUEST;
+
+ ctx->current_write_length = 0;
+
+ ++ctx->ack_m_retry;
+
+ if (ctx->ack_m_retry > AUX_DEFER_RETRY_COUNTER) {
+ ctx->status =
+ I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT;
+ ctx->operation_succeeded = false;
+ } else
+ udelay(300);
+ } else {
+ ctx->status = I2CAUX_TRANSACTION_STATUS_SUCCEEDED;
+ ctx->defer_retry_aux = 0;
+ ctx->ack_m_retry = 0;
+ ctx->transaction_complete = true;
+ }
+ break;
+ case AUX_TRANSACTION_REPLY_AUX_NACK:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_NACK;
+ ctx->operation_succeeded = false;
+ break;
+ case AUX_TRANSACTION_REPLY_AUX_DEFER:
+ ++ctx->defer_retry_aux;
+
+ if (ctx->defer_retry_aux > ctx->max_defer_retry) {
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT;
+ ctx->operation_succeeded = false;
+ }
+ break;
+ case AUX_TRANSACTION_REPLY_I2C_DEFER:
+ ctx->defer_retry_aux = 0;
+ ctx->current_write_length = 0;
+
+ ctx->request.action = ctx->mot ?
+ I2CAUX_TRANSACTION_ACTION_I2C_STATUS_REQUEST_MOT :
+ I2CAUX_TRANSACTION_ACTION_I2C_STATUS_REQUEST;
+
+ ++ctx->defer_retry_i2c;
+
+ if (ctx->defer_retry_i2c > ctx->max_defer_retry) {
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT;
+ ctx->operation_succeeded = false;
+ }
+ break;
+ case AUX_TRANSACTION_REPLY_HPD_DISCON:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON;
+ ctx->operation_succeeded = false;
+ break;
+ default:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_UNKNOWN;
+ ctx->operation_succeeded = false;
+ }
+}
+static void process_write_request(
+ struct aux_engine *engine,
+ struct write_command_context *ctx)
+{
+ enum aux_channel_operation_result operation_result;
+
+ engine->funcs->submit_channel_request(engine, &ctx->request);
+
+ operation_result = engine->funcs->get_channel_status(
+ engine, &ctx->returned_byte);
+
+ switch (operation_result) {
+ case AUX_CHANNEL_OPERATION_SUCCEEDED:
+ ctx->timed_out_retry_aux = 0;
+ ctx->invalid_reply_retry_aux = 0;
+
+ ctx->reply.length = ctx->returned_byte;
+ ctx->reply.data = ctx->reply_data;
+
+ process_write_reply(engine, ctx);
+ break;
+ case AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY:
+ ++ctx->invalid_reply_retry_aux;
+
+ if (ctx->invalid_reply_retry_aux >
+ AUX_INVALID_REPLY_RETRY_COUNTER) {
+ ctx->status =
+ I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR;
+ ctx->operation_succeeded = false;
+ } else
+ udelay(400);
+ break;
+ case AUX_CHANNEL_OPERATION_FAILED_TIMEOUT:
+ ++ctx->timed_out_retry_aux;
+
+ if (ctx->timed_out_retry_aux > AUX_TIMED_OUT_RETRY_COUNTER) {
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT;
+ ctx->operation_succeeded = false;
+ } else {
+ /* DP 1.2a, table 2-58:
+ * "S3: AUX Request CMD PENDING:
+ * retry 3 times, with 400usec wait on each"
+ * The HW timeout is set to 550usec,
+ * so we should not wait here
+ */
+ }
+ break;
+ case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON;
+ ctx->operation_succeeded = false;
+ break;
+ default:
+ ctx->status = I2CAUX_TRANSACTION_STATUS_UNKNOWN;
+ ctx->operation_succeeded = false;
+ }
+}
+static bool write_command(
+ struct aux_engine *engine,
+ struct i2caux_transaction_request *request,
+ bool middle_of_transaction)
+{
+ struct write_command_context ctx;
+
+ ctx.mot = middle_of_transaction;
+ ctx.buffer = request->payload.data;
+ ctx.current_write_length = request->payload.length;
+ ctx.timed_out_retry_aux = 0;
+ ctx.invalid_reply_retry_aux = 0;
+ ctx.defer_retry_aux = 0;
+ ctx.defer_retry_i2c = 0;
+ ctx.ack_m_retry = 0;
+ ctx.transaction_complete = false;
+ ctx.operation_succeeded = true;
+
+ if (request->payload.address_space ==
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD) {
+ ctx.request.type = AUX_TRANSACTION_TYPE_DP;
+ ctx.request.action = I2CAUX_TRANSACTION_ACTION_DP_WRITE;
+ ctx.request.address = request->payload.address;
+ } else if (request->payload.address_space ==
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_I2C) {
+ ctx.request.type = AUX_TRANSACTION_TYPE_I2C;
+ ctx.request.action = middle_of_transaction ?
+ I2CAUX_TRANSACTION_ACTION_I2C_WRITE_MOT :
+ I2CAUX_TRANSACTION_ACTION_I2C_WRITE;
+ ctx.request.address = request->payload.address >> 1;
+ } else {
+ /* in DAL2, there was no return in such case */
+ BREAK_TO_DEBUGGER();
+ return false;
+ }
+
+ ctx.request.delay = 0;
+
+ ctx.max_defer_retry =
+ (engine->max_defer_write_retry > AUX_DEFER_RETRY_COUNTER) ?
+ engine->max_defer_write_retry : AUX_DEFER_RETRY_COUNTER;
+
+ do {
+ ctx.request.data = ctx.buffer;
+ ctx.request.length = ctx.current_write_length;
+
+ process_write_request(engine, &ctx);
+
+ request->status = ctx.status;
+
+ if (ctx.operation_succeeded && !ctx.transaction_complete)
+ if (ctx.request.type == AUX_TRANSACTION_TYPE_I2C)
+ msleep(engine->delay);
+ } while (ctx.operation_succeeded && !ctx.transaction_complete);
+
+ if (request->payload.address_space ==
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD) {
+ DC_LOG_I2C_AUX("WRITE: addr:0x%x value:0x%x Result:%d",
+ request->payload.address,
+ request->payload.data[0],
+ ctx.operation_succeeded);
+ }
+
+ return ctx.operation_succeeded;
+}
+static bool end_of_transaction_command(
+ struct aux_engine *engine,
+ struct i2caux_transaction_request *request)
+{
+ struct i2caux_transaction_request dummy_request;
+ uint8_t dummy_data;
+
+ /* [tcheng] We only need to send the stop (read with MOT = 0)
+ * for I2C-over-Aux, not native AUX
+ */
+
+ if (request->payload.address_space !=
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_I2C)
+ return false;
+
+ dummy_request.operation = request->operation;
+ dummy_request.payload.address_space = request->payload.address_space;
+ dummy_request.payload.address = request->payload.address;
+
+ /*
+ * Add a dummy byte due to some receiver quirk
+ * where one byte is sent along with MOT = 0.
+ * Ideally this should be 0.
+ */
+
+ dummy_request.payload.length = 0;
+ dummy_request.payload.data = &dummy_data;
+
+ if (request->operation == I2CAUX_TRANSACTION_READ)
+ return read_command(engine, &dummy_request, false);
+ else
+ return write_command(engine, &dummy_request, false);
+
+ /* according Syed, it does not need now DoDummyMOT */
+}
+bool submit_request(
+ struct engine *engine,
+ struct i2caux_transaction_request *request,
+ bool middle_of_transaction)
+{
+ struct aux_engine *aux_engine = FROM_AUX_ENGINE_ENGINE(engine);
+
+ bool result;
+ bool mot_used = true;
+
+ switch (request->operation) {
+ case I2CAUX_TRANSACTION_READ:
+ result = read_command(aux_engine, request, mot_used);
+ break;
+ case I2CAUX_TRANSACTION_WRITE:
+ result = write_command(aux_engine, request, mot_used);
+ break;
+ default:
+ result = false;
+ }
+
+ /* [tcheng]
+ * need to send stop for the last transaction to free up the AUX
+ * if the above command fails, this would be the last transaction
+ */
+
+ if (!middle_of_transaction || !result)
+ end_of_transaction_command(aux_engine, request);
+
+ /* mask AUX interrupt */
+
+ return result;
+}
+enum i2caux_engine_type get_engine_type(
+ const struct engine *engine)
+{
+ return I2CAUX_ENGINE_TYPE_AUX;
+}
+
+static struct aux_engine *acquire(
+ struct engine *engine,
+ struct ddc *ddc)
+{
+ struct aux_engine *aux_engine = FROM_AUX_ENGINE_ENGINE(engine);
+ enum gpio_result result;
+
+ if (aux_engine->funcs->is_engine_available) {
+ /*check whether SW could use the engine*/
+ if (!aux_engine->funcs->is_engine_available(aux_engine))
+ return NULL;
+ }
+
+ result = dal_ddc_open(ddc, GPIO_MODE_HARDWARE,
+ GPIO_DDC_CONFIG_TYPE_MODE_AUX);
+
+ if (result != GPIO_RESULT_OK)
+ return NULL;
+
+ if (!aux_engine->funcs->acquire_engine(aux_engine)) {
+ dal_ddc_close(ddc);
+ return NULL;
+ }
+
+ engine->ddc = ddc;
+
+ return aux_engine;
+}
+
+static const struct aux_engine_funcs aux_engine_funcs = {
+ .acquire_engine = acquire_engine,
+ .submit_channel_request = submit_channel_request,
+ .process_channel_reply = process_channel_reply,
+ .read_channel_reply = read_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,
+ .destroy_engine = dce110_engine_destroy,
+ .submit_request = submit_request,
+ .get_engine_type = get_engine_type,
+ .acquire = acquire,
+};
+
+void dce110_engine_destroy(struct engine **engine)
+{
+
+ struct aux_engine_dce110 *engine110 = FROM_ENGINE(*engine);
+
+ kfree(engine110);
+ *engine = NULL;
+
+}
+struct aux_engine *dce110_aux_engine_construct(struct aux_engine_dce110 *aux_engine110,
+ struct dc_context *ctx,
+ uint32_t inst,
+ uint32_t timeout_period,
+ const struct dce110_aux_registers *regs)
+{
+ aux_engine110->base.base.ddc = NULL;
+ aux_engine110->base.base.ctx = ctx;
+ aux_engine110->base.delay = 0;
+ aux_engine110->base.max_defer_write_retry = 0;
+ aux_engine110->base.base.funcs = &engine_funcs;
+ aux_engine110->base.funcs = &aux_engine_funcs;
+ aux_engine110->base.base.inst = inst;
+ aux_engine110->timeout_period = timeout_period;
+ aux_engine110->regs = regs;
+
+ return &aux_engine110->base;
+}
+
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h
new file mode 100644
index 0000000..c6b2aec
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h
@@ -0,0 +1,111 @@
+/*
+ * 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;
+};
+
+enum { /* This is the timeout as defined in DP 1.2a,
+ * 2.3.4 "Detailed uPacket TX AUX CH State Description".
+ */
+ AUX_TIMEOUT_PERIOD = 400,
+
+ /* Ideally, the SW timeout should be just above 550usec
+ * which is programmed in HW.
+ * But the SW timeout of 600usec is not reliable,
+ * because on some systems, delay_in_microseconds()
+ * returns faster than it should.
+ * EPR #379763: by trial-and-error on different systems,
+ * 700usec is the minimum reliable SW timeout for polling
+ * the AUX_SW_STATUS.AUX_SW_DONE bit.
+ * This timeout expires *only* when there is
+ * AUX Error or AUX Timeout conditions - not during normal operation.
+ * During normal operation, AUX_SW_STATUS.AUX_SW_DONE bit is set
+ * at most within ~240usec. That means,
+ * increasing this timeout will not affect normal operation,
+ * and we'll timeout after
+ * SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD = 1600usec.
+ * This timeout is especially important for
+ * resume from S3 and CTS.
+ */
+ SW_AUX_TIMEOUT_PERIOD_MULTIPLIER = 4
+};
+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 *dce110_aux_engine_construct(
+ struct aux_engine_dce110 *aux_engine110,
+ struct dc_context *ctx,
+ uint32_t inst,
+ uint32_t timeout_period,
+ const struct dce110_aux_registers *regs);
+
+void dce110_engine_destroy(struct engine **engine);
+
+bool dce110_aux_engine_acquire(
+ struct engine *aux_engine,
+ struct ddc *ddc);
+#endif
diff --git a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
index ad8ad4e..c34c953 100644
--- a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
@@ -52,6 +52,7 @@
#include "dce/dce_10_0_sh_mask.h"
#include "dce/dce_dmcu.h"
+#include "dce/dce_aux.h"
#include "dce/dce_abm.h"
#ifndef mmMC_HUB_RDREQ_DMIF_LIMIT
@@ -279,7 +280,20 @@ static const struct dce_opp_shift opp_shift = {
static const struct dce_opp_mask opp_mask = {
OPP_COMMON_MASK_SH_LIST_DCE_100(_MASK)
};
+#define aux_engine_regs(id)\
+[id] = {\
+ AUX_COMMON_REG_LIST(id), \
+ .AUX_RESET_MASK = 0 \
+}
+static const struct dce110_aux_registers aux_engine_regs[] = {
+ aux_engine_regs(0),
+ aux_engine_regs(1),
+ aux_engine_regs(2),
+ aux_engine_regs(3),
+ aux_engine_regs(4),
+ aux_engine_regs(5)
+};
#define audio_regs(id)\
[id] = {\
@@ -572,6 +586,23 @@ struct output_pixel_processor *dce100_opp_create(
return &opp->base;
}
+struct engine *dce100_aux_engine_create(
+ struct dc_context *ctx,
+ uint32_t inst)
+{
+ struct aux_engine_dce110 *aux_engine =
+ kzalloc(sizeof(struct aux_engine_dce110), GFP_KERNEL);
+
+ if (!aux_engine)
+ return NULL;
+
+ dce110_aux_engine_construct(aux_engine, ctx, inst,
+ SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD,
+ &aux_engine_regs[inst]);
+
+ return &aux_engine->base.base;
+}
+
struct clock_source *dce100_clock_source_create(
struct dc_context *ctx,
struct dc_bios *bios,
@@ -624,6 +655,10 @@ static void destruct(struct dce110_resource_pool *pool)
kfree(DCE110TG_FROM_TG(pool->base.timing_generators[i]));
pool->base.timing_generators[i] = NULL;
}
+
+ if (pool->base.engines[i] != NULL)
+ dce110_engine_destroy(&pool->base.engines[i]);
+
}
for (i = 0; i < pool->base.stream_enc_count; i++) {
@@ -928,6 +963,13 @@ static bool construct(
"DC: failed to create output pixel processor!\n");
goto res_create_fail;
}
+ pool->base.engines[i] = dce100_aux_engine_create(ctx, i);
+ if (pool->base.engines[i] == NULL) {
+ BREAK_TO_DEBUGGER();
+ dm_error(
+ "DC:failed to create aux engine!!\n");
+ goto res_create_fail;
+ }
}
dc->caps.max_planes = pool->base.pipe_count;
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c
index 1c902e4..4a665a2 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c
@@ -49,6 +49,7 @@
#include "dce/dce_clock_source.h"
#include "dce/dce_hwseq.h"
#include "dce110/dce110_hw_sequencer.h"
+#include "dce/dce_aux.h"
#include "dce/dce_abm.h"
#include "dce/dce_dmcu.h"
@@ -306,6 +307,21 @@ static const struct dce_opp_mask opp_mask = {
OPP_COMMON_MASK_SH_LIST_DCE_110(_MASK)
};
+#define aux_engine_regs(id)\
+[id] = {\
+ AUX_COMMON_REG_LIST(id), \
+ .AUX_RESET_MASK = 0 \
+}
+
+static const struct dce110_aux_registers aux_engine_regs[] = {
+ aux_engine_regs(0),
+ aux_engine_regs(1),
+ aux_engine_regs(2),
+ aux_engine_regs(3),
+ aux_engine_regs(4),
+ aux_engine_regs(5)
+};
+
#define audio_regs(id)\
[id] = {\
AUD_COMMON_REG_LIST(id)\
@@ -588,6 +604,23 @@ static struct output_pixel_processor *dce110_opp_create(
return &opp->base;
}
+struct engine *dce110_aux_engine_create(
+ struct dc_context *ctx,
+ uint32_t inst)
+{
+ struct aux_engine_dce110 *aux_engine =
+ kzalloc(sizeof(struct aux_engine_dce110), GFP_KERNEL);
+
+ if (!aux_engine)
+ return NULL;
+
+ dce110_aux_engine_construct(aux_engine, ctx, inst,
+ SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD,
+ &aux_engine_regs[inst]);
+
+ return &aux_engine->base.base;
+}
+
struct clock_source *dce110_clock_source_create(
struct dc_context *ctx,
struct dc_bios *bios,
@@ -651,6 +684,10 @@ static void destruct(struct dce110_resource_pool *pool)
kfree(DCE110TG_FROM_TG(pool->base.timing_generators[i]));
pool->base.timing_generators[i] = NULL;
}
+
+ if (pool->base.engines[i] != NULL)
+ dce110_engine_destroy(&pool->base.engines[i]);
+
}
for (i = 0; i < pool->base.stream_enc_count; i++) {
@@ -1258,6 +1295,14 @@ static bool construct(
"DC: failed to create output pixel processor!\n");
goto res_create_fail;
}
+
+ pool->base.engines[i] = dce110_aux_engine_create(ctx, i);
+ if (pool->base.engines[i] == NULL) {
+ BREAK_TO_DEBUGGER();
+ dm_error(
+ "DC:failed to create aux engine!!\n");
+ goto res_create_fail;
+ }
}
dc->fbc_compressor = dce110_compressor_create(ctx);
diff --git a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
index 30d5b32..caf90ae 100644
--- a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
@@ -49,6 +49,7 @@
#include "dce112/dce112_hw_sequencer.h"
#include "dce/dce_abm.h"
#include "dce/dce_dmcu.h"
+#include "dce/dce_aux.h"
#include "reg_helper.h"
@@ -314,6 +315,21 @@ static const struct dce_opp_mask opp_mask = {
OPP_COMMON_MASK_SH_LIST_DCE_112(_MASK)
};
+#define aux_engine_regs(id)\
+[id] = {\
+ AUX_COMMON_REG_LIST(id), \
+ .AUX_RESET_MASK = 0 \
+}
+
+static const struct dce110_aux_registers aux_engine_regs[] = {
+ aux_engine_regs(0),
+ aux_engine_regs(1),
+ aux_engine_regs(2),
+ aux_engine_regs(3),
+ aux_engine_regs(4),
+ aux_engine_regs(5)
+};
+
#define audio_regs(id)\
[id] = {\
AUD_COMMON_REG_LIST(id)\
@@ -588,6 +604,23 @@ struct output_pixel_processor *dce112_opp_create(
return &opp->base;
}
+struct engine *dce112_aux_engine_create(
+ struct dc_context *ctx,
+ uint32_t inst)
+{
+ struct aux_engine_dce110 *aux_engine =
+ kzalloc(sizeof(struct aux_engine_dce110), GFP_KERNEL);
+
+ if (!aux_engine)
+ return NULL;
+
+ dce110_aux_engine_construct(aux_engine, ctx, inst,
+ SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD,
+ &aux_engine_regs[inst]);
+
+ return &aux_engine->base.base;
+}
+
struct clock_source *dce112_clock_source_create(
struct dc_context *ctx,
struct dc_bios *bios,
@@ -625,6 +658,9 @@ static void destruct(struct dce110_resource_pool *pool)
if (pool->base.opps[i] != NULL)
dce110_opp_destroy(&pool->base.opps[i]);
+ if (pool->base.engines[i] != NULL)
+ dce110_engine_destroy(&pool->base.engines[i]);
+
if (pool->base.transforms[i] != NULL)
dce112_transform_destroy(&pool->base.transforms[i]);
@@ -640,6 +676,10 @@ static void destruct(struct dce110_resource_pool *pool)
kfree(DCE110TG_FROM_TG(pool->base.timing_generators[i]));
pool->base.timing_generators[i] = NULL;
}
+
+ if (pool->base.engines[i] != NULL)
+ dce110_engine_destroy(&pool->base.engines[i]);
+
}
for (i = 0; i < pool->base.stream_enc_count; i++) {
@@ -1208,6 +1248,13 @@ static bool construct(
"DC:failed to create output pixel processor!\n");
goto res_create_fail;
}
+ pool->base.engines[i] = dce112_aux_engine_create(ctx, i);
+ if (pool->base.engines[i] == NULL) {
+ BREAK_TO_DEBUGGER();
+ dm_error(
+ "DC:failed to create aux engine!!\n");
+ goto res_create_fail;
+ }
}
if (!resource_construct(num_virtual_links, dc, &pool->base,
diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
index 8381f27..e389832 100644
--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
@@ -53,6 +53,7 @@
#include "dce/dce_hwseq.h"
#include "dce/dce_abm.h"
#include "dce/dce_dmcu.h"
+#include "dce/dce_aux.h"
#include "dce/dce_12_0_offset.h"
#include "dce/dce_12_0_sh_mask.h"
@@ -297,6 +298,20 @@ static const struct dce_opp_shift opp_shift = {
static const struct dce_opp_mask opp_mask = {
OPP_COMMON_MASK_SH_LIST_DCE_120(_MASK)
};
+ #define aux_engine_regs(id)\
+[id] = {\
+ AUX_COMMON_REG_LIST(id), \
+ .AUX_RESET_MASK = 0 \
+}
+
+static const struct dce110_aux_registers aux_engine_regs[] = {
+ aux_engine_regs(0),
+ aux_engine_regs(1),
+ aux_engine_regs(2),
+ aux_engine_regs(3),
+ aux_engine_regs(4),
+ aux_engine_regs(5)
+};
#define audio_regs(id)\
[id] = {\
@@ -361,6 +376,22 @@ struct output_pixel_processor *dce120_opp_create(
ctx, inst, &opp_regs[inst], &opp_shift, &opp_mask);
return &opp->base;
}
+struct engine *dce120_aux_engine_create(
+ struct dc_context *ctx,
+ uint32_t inst)
+{
+ struct aux_engine_dce110 *aux_engine =
+ kzalloc(sizeof(struct aux_engine_dce110), GFP_KERNEL);
+
+ if (!aux_engine)
+ return NULL;
+
+ dce110_aux_engine_construct(aux_engine, ctx, inst,
+ SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD,
+ &aux_engine_regs[inst]);
+
+ return &aux_engine->base.base;
+}
static const struct bios_registers bios_regs = {
.BIOS_SCRATCH_6 = mmBIOS_SCRATCH_6 + NBIO_BASE(mmBIOS_SCRATCH_6_BASE_IDX)
@@ -467,6 +498,10 @@ static void destruct(struct dce110_resource_pool *pool)
kfree(DCE110TG_FROM_TG(pool->base.timing_generators[i]));
pool->base.timing_generators[i] = NULL;
}
+
+ if (pool->base.engines[i] != NULL)
+ dce110_engine_destroy(&pool->base.engines[i]);
+
}
for (i = 0; i < pool->base.audio_count; i++) {
@@ -984,6 +1019,13 @@ static bool construct(
dm_error(
"DC: failed to create output pixel processor!\n");
}
+ pool->base.engines[i] = dce120_aux_engine_create(ctx, i);
+ if (pool->base.engines[i] == NULL) {
+ BREAK_TO_DEBUGGER();
+ dm_error(
+ "DC:failed to create aux engine!!\n");
+ goto res_create_fail;
+ }
/* check next valid pipe */
j++;
diff --git a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c
index 2ac95ec..6fb33ad 100644
--- a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c
@@ -54,6 +54,7 @@
#include "reg_helper.h"
#include "dce/dce_dmcu.h"
+#include "dce/dce_aux.h"
#include "dce/dce_abm.h"
/* TODO remove this include */
@@ -298,6 +299,21 @@ static const struct dce_opp_mask opp_mask = {
OPP_COMMON_MASK_SH_LIST_DCE_80(_MASK)
};
+#define aux_engine_regs(id)\
+[id] = {\
+ AUX_COMMON_REG_LIST(id), \
+ .AUX_RESET_MASK = 0 \
+}
+
+static const struct dce110_aux_registers aux_engine_regs[] = {
+ aux_engine_regs(0),
+ aux_engine_regs(1),
+ aux_engine_regs(2),
+ aux_engine_regs(3),
+ aux_engine_regs(4),
+ aux_engine_regs(5)
+};
+
#define audio_regs(id)\
[id] = {\
AUD_COMMON_REG_LIST(id)\
@@ -448,6 +464,23 @@ static struct output_pixel_processor *dce80_opp_create(
return &opp->base;
}
+struct engine *dce80_aux_engine_create(
+ struct dc_context *ctx,
+ uint32_t inst)
+{
+ struct aux_engine_dce110 *aux_engine =
+ kzalloc(sizeof(struct aux_engine_dce110), GFP_KERNEL);
+
+ if (!aux_engine)
+ return NULL;
+
+ dce110_aux_engine_construct(aux_engine, ctx, inst,
+ SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD,
+ &aux_engine_regs[inst]);
+
+ return &aux_engine->base.base;
+}
+
static struct stream_encoder *dce80_stream_encoder_create(
enum engine_id eng_id,
struct dc_context *ctx)
@@ -655,6 +688,9 @@ static void destruct(struct dce110_resource_pool *pool)
kfree(DCE110TG_FROM_TG(pool->base.timing_generators[i]));
pool->base.timing_generators[i] = NULL;
}
+
+ if (pool->base.engines[i] != NULL)
+ dce110_engine_destroy(&pool->base.engines[i]);
}
for (i = 0; i < pool->base.stream_enc_count; i++) {
@@ -899,6 +935,14 @@ static bool dce80_construct(
dm_error("DC: failed to create output pixel processor!\n");
goto res_create_fail;
}
+
+ pool->base.engines[i] = dce80_aux_engine_create(ctx, i);
+ if (pool->base.engines[i] == NULL) {
+ BREAK_TO_DEBUGGER();
+ dm_error(
+ "DC:failed to create aux engine!!\n");
+ goto res_create_fail;
+ }
}
dc->caps.max_planes = pool->base.pipe_count;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
index 84581b3..ef8bb27 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
@@ -64,6 +64,7 @@
#include "reg_helper.h"
#include "dce/dce_abm.h"
#include "dce/dce_dmcu.h"
+#include "dce/dce_aux.h"
const struct _vcs_dpi_ip_params_st dcn1_0_ip = {
.rob_buffer_size_kbytes = 64,
@@ -356,6 +357,21 @@ static const struct dcn10_opp_mask opp_mask = {
OPP_MASK_SH_LIST_DCN10(_MASK),
};
+#define aux_engine_regs(id)\
+[id] = {\
+ AUX_COMMON_REG_LIST(id), \
+ .AUX_RESET_MASK = 0 \
+}
+
+static const struct dce110_aux_registers aux_engine_regs[] = {
+ aux_engine_regs(0),
+ aux_engine_regs(1),
+ aux_engine_regs(2),
+ aux_engine_regs(3),
+ aux_engine_regs(4),
+ aux_engine_regs(5)
+};
+
#define tf_regs(id)\
[id] = {\
TF_REG_LIST_DCN10(id),\
@@ -578,6 +594,23 @@ static struct output_pixel_processor *dcn10_opp_create(
return &opp->base;
}
+struct engine *dcn10_aux_engine_create(
+ struct dc_context *ctx,
+ uint32_t inst)
+{
+ struct aux_engine_dce110 *aux_engine =
+ kzalloc(sizeof(struct aux_engine_dce110), GFP_KERNEL);
+
+ if (!aux_engine)
+ return NULL;
+
+ dce110_aux_engine_construct(aux_engine, ctx, inst,
+ SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD,
+ &aux_engine_regs[inst]);
+
+ return &aux_engine->base.base;
+}
+
static struct mpc *dcn10_mpc_create(struct dc_context *ctx)
{
struct dcn10_mpc *mpc10 = kzalloc(sizeof(struct dcn10_mpc),
@@ -826,6 +859,9 @@ static void destruct(struct dcn10_resource_pool *pool)
kfree(DCN10TG_FROM_TG(pool->base.timing_generators[i]));
pool->base.timing_generators[i] = NULL;
}
+
+ if (pool->base.engines[i] != NULL)
+ pool->base.engines[i]->funcs->destroy_engine(&pool->base.engines[i]);
}
for (i = 0; i < pool->base.stream_enc_count; i++)
@@ -1255,6 +1291,14 @@ static bool construct(
goto fail;
}
+ pool->base.engines[i] = dcn10_aux_engine_create(ctx, i);
+ if (pool->base.engines[i] == NULL) {
+ BREAK_TO_DEBUGGER();
+ dm_error(
+ "DC:failed to create aux engine!!\n");
+ goto fail;
+ }
+
/* check next valid pipe */
j++;
}
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/engine.h b/drivers/gpu/drm/amd/display/dc/i2caux/engine.h
index 1e8a158..b16fb1f 100644
--- a/drivers/gpu/drm/amd/display/dc/i2caux/engine.h
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/engine.h
@@ -96,6 +96,7 @@ struct engine_funcs {
struct engine {
const struct engine_funcs *funcs;
+ uint32_t inst;
struct ddc *ddc;
struct dc_context *ctx;
};
diff --git a/drivers/gpu/drm/amd/display/dc/inc/core_types.h b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
index 1db26bc..2d0d4ae 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/core_types.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
@@ -138,7 +138,7 @@ struct resource_pool {
struct output_pixel_processor *opps[MAX_PIPES];
struct timing_generator *timing_generators[MAX_PIPES];
struct stream_encoder *stream_enc[MAX_PIPES * 2];
-
+ struct engine *engines[MAX_PIPES];
struct hubbub *hubbub;
struct mpc *mpc;
struct pp_smu_funcs_rv *pp_smu;
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h b/drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h
new file mode 100644
index 0000000..06d7e5d
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h
@@ -0,0 +1,113 @@
+/*
+ * 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_H__
+#define __DAL_AUX_ENGINE_H__
+
+#include "engine.h"
+#include "include/i2caux_interface.h"
+
+struct aux_engine;
+union aux_config;
+struct aux_engine_funcs {
+ void (*destroy)(
+ struct aux_engine **ptr);
+ bool (*acquire_engine)(
+ struct aux_engine *engine);
+ void (*configure)(
+ struct aux_engine *engine,
+ union aux_config cfg);
+ void (*submit_channel_request)(
+ struct aux_engine *engine,
+ struct aux_request_transaction_data *request);
+ void (*process_channel_reply)(
+ struct aux_engine *engine,
+ struct aux_reply_transaction_data *reply);
+ int (*read_channel_reply)(
+ struct aux_engine *engine,
+ uint32_t size,
+ uint8_t *buffer,
+ uint8_t *reply_result,
+ uint32_t *sw_status);
+ enum aux_channel_operation_result (*get_channel_status)(
+ struct aux_engine *engine,
+ uint8_t *returned_bytes);
+ bool (*is_engine_available)(struct aux_engine *engine);
+};
+struct engine;
+struct aux_engine {
+ struct engine base;
+ const struct aux_engine_funcs *funcs;
+ /* following values are expressed in milliseconds */
+ uint32_t delay;
+ uint32_t max_defer_write_retry;
+
+ bool acquire_reset;
+};
+struct read_command_context {
+ uint8_t *buffer;
+ uint32_t current_read_length;
+ uint32_t offset;
+ enum i2caux_transaction_status status;
+
+ struct aux_request_transaction_data request;
+ struct aux_reply_transaction_data reply;
+
+ uint8_t returned_byte;
+
+ uint32_t timed_out_retry_aux;
+ uint32_t invalid_reply_retry_aux;
+ uint32_t defer_retry_aux;
+ uint32_t defer_retry_i2c;
+ uint32_t invalid_reply_retry_aux_on_ack;
+
+ bool transaction_complete;
+ bool operation_succeeded;
+};
+struct write_command_context {
+ bool mot;
+
+ uint8_t *buffer;
+ uint32_t current_write_length;
+ enum i2caux_transaction_status status;
+
+ struct aux_request_transaction_data request;
+ struct aux_reply_transaction_data reply;
+
+ uint8_t returned_byte;
+
+ uint32_t timed_out_retry_aux;
+ uint32_t invalid_reply_retry_aux;
+ uint32_t defer_retry_aux;
+ uint32_t defer_retry_i2c;
+ uint32_t max_defer_retry;
+ uint32_t ack_m_retry;
+
+ uint8_t reply_data[DEFAULT_AUX_MAX_DATA_SIZE];
+
+ bool transaction_complete;
+ bool operation_succeeded;
+};
+#endif
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/engine.h b/drivers/gpu/drm/amd/display/dc/inc/hw/engine.h
new file mode 100644
index 0000000..1f5476f
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/engine.h
@@ -0,0 +1,106 @@
+/*
+ * 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_ENGINE_H__
+#define __DAL_ENGINE_H__
+
+#include "dc_ddc_types.h"
+
+enum i2caux_transaction_operation {
+ I2CAUX_TRANSACTION_READ,
+ I2CAUX_TRANSACTION_WRITE
+};
+
+enum i2caux_transaction_address_space {
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_I2C = 1,
+ I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD
+};
+
+struct i2caux_transaction_payload {
+ enum i2caux_transaction_address_space address_space;
+ uint32_t address;
+ uint32_t length;
+ uint8_t *data;
+};
+
+enum i2caux_transaction_status {
+ I2CAUX_TRANSACTION_STATUS_UNKNOWN = (-1L),
+ I2CAUX_TRANSACTION_STATUS_SUCCEEDED,
+ I2CAUX_TRANSACTION_STATUS_FAILED_CHANNEL_BUSY,
+ I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT,
+ I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR,
+ I2CAUX_TRANSACTION_STATUS_FAILED_NACK,
+ I2CAUX_TRANSACTION_STATUS_FAILED_INCOMPLETE,
+ I2CAUX_TRANSACTION_STATUS_FAILED_OPERATION,
+ I2CAUX_TRANSACTION_STATUS_FAILED_INVALID_OPERATION,
+ I2CAUX_TRANSACTION_STATUS_FAILED_BUFFER_OVERFLOW,
+ I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON
+};
+
+struct i2caux_transaction_request {
+ enum i2caux_transaction_operation operation;
+ struct i2caux_transaction_payload payload;
+ enum i2caux_transaction_status status;
+};
+
+enum i2caux_engine_type {
+ I2CAUX_ENGINE_TYPE_UNKNOWN = (-1L),
+ I2CAUX_ENGINE_TYPE_AUX,
+ I2CAUX_ENGINE_TYPE_I2C_DDC_HW,
+ I2CAUX_ENGINE_TYPE_I2C_GENERIC_HW,
+ I2CAUX_ENGINE_TYPE_I2C_SW
+};
+
+enum i2c_default_speed {
+ I2CAUX_DEFAULT_I2C_HW_SPEED = 50,
+ I2CAUX_DEFAULT_I2C_SW_SPEED = 50
+};
+
+struct engine;
+
+struct engine_funcs {
+ enum i2caux_engine_type (*get_engine_type)(
+ const struct engine *engine);
+ struct aux_engine* (*acquire)(
+ struct engine *engine,
+ struct ddc *ddc);
+ bool (*submit_request)(
+ struct engine *engine,
+ struct i2caux_transaction_request *request,
+ bool middle_of_transaction);
+ void (*release_engine)(
+ struct engine *engine);
+ void (*destroy_engine)(
+ struct engine **engine);
+};
+
+struct engine {
+ const struct engine_funcs *funcs;
+ uint32_t inst;
+ struct ddc *ddc;
+ struct dc_context *ctx;
+};
+
+#endif
--
2.7.4
