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authorThomas Gleixner2017-11-23 16:29:05 +0100
committerThomas Gleixner2017-11-23 16:29:05 +0100
commit866c9b94ef968445c52214b3748ecc52a8491bca (patch)
tree1fd073acb9be8e89e77b35c41e2964ac6feabee6 /drivers/gpu/drm/amd/display/dc/i2caux/i2c_engine.h
parenttimekeeping: Remove CONFIG_GENERIC_TIME_VSYSCALL_OLD (diff)
parenttreewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts (diff)
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Merge tag 'for-linus-timers-conversion-final-v4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into timers/urgent
Pull the last batch of manual timer conversions from Kees Cook: - final batch of "non trivial" timer conversions (multi-tree dependencies, things Coccinelle couldn't handle, etc). - treewide conversions via Coccinelle, in 4 steps: - DEFINE_TIMER() functions converted to struct timer_list * argument - init_timer() -> setup_timer() - setup_timer() -> timer_setup() - setup_timer() -> timer_setup() (with a single embedded structure) - deprecated timer API removals (init_timer(), setup_*timer()) - finalization of new API (remove global casts)
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/i2caux/i2c_engine.h')
-rw-r--r--drivers/gpu/drm/amd/display/dc/i2caux/i2c_engine.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/i2c_engine.h b/drivers/gpu/drm/amd/display/dc/i2caux/i2c_engine.h
new file mode 100644
index 000000000000..58fc0f25eceb
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/i2c_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_I2C_ENGINE_H__
+#define __DAL_I2C_ENGINE_H__
+
+enum i2c_channel_operation_result {
+ I2C_CHANNEL_OPERATION_SUCCEEDED,
+ I2C_CHANNEL_OPERATION_FAILED,
+ I2C_CHANNEL_OPERATION_NOT_GRANTED,
+ I2C_CHANNEL_OPERATION_IS_BUSY,
+ I2C_CHANNEL_OPERATION_NO_HANDLE_PROVIDED,
+ I2C_CHANNEL_OPERATION_CHANNEL_IN_USE,
+ I2C_CHANNEL_OPERATION_CHANNEL_CLIENT_MAX_ALLOWED,
+ I2C_CHANNEL_OPERATION_ENGINE_BUSY,
+ I2C_CHANNEL_OPERATION_TIMEOUT,
+ I2C_CHANNEL_OPERATION_NO_RESPONSE,
+ I2C_CHANNEL_OPERATION_HW_REQUEST_I2C_BUS,
+ I2C_CHANNEL_OPERATION_WRONG_PARAMETER,
+ I2C_CHANNEL_OPERATION_OUT_NB_OF_RETRIES,
+ I2C_CHANNEL_OPERATION_NOT_STARTED
+};
+
+struct i2c_request_transaction_data {
+ enum i2caux_transaction_action action;
+ enum i2c_channel_operation_result status;
+ uint8_t address;
+ uint32_t length;
+ uint8_t *data;
+};
+
+struct i2c_reply_transaction_data {
+ uint32_t length;
+ uint8_t *data;
+};
+
+struct i2c_engine;
+
+struct i2c_engine_funcs {
+ void (*destroy)(
+ struct i2c_engine **ptr);
+ uint32_t (*get_speed)(
+ const struct i2c_engine *engine);
+ void (*set_speed)(
+ struct i2c_engine *engine,
+ uint32_t speed);
+ bool (*acquire_engine)(
+ struct i2c_engine *engine,
+ struct ddc *ddc);
+ bool (*setup_engine)(
+ struct i2c_engine *engine);
+ void (*submit_channel_request)(
+ struct i2c_engine *engine,
+ struct i2c_request_transaction_data *request);
+ void (*process_channel_reply)(
+ struct i2c_engine *engine,
+ struct i2c_reply_transaction_data *reply);
+ enum i2c_channel_operation_result (*get_channel_status)(
+ struct i2c_engine *engine,
+ uint8_t *returned_bytes);
+};
+
+struct i2c_engine {
+ struct engine base;
+ const struct i2c_engine_funcs *funcs;
+ uint32_t timeout_delay;
+};
+
+void dal_i2c_engine_construct(
+ struct i2c_engine *engine,
+ struct dc_context *ctx);
+
+void dal_i2c_engine_destruct(
+ struct i2c_engine *engine);
+
+bool dal_i2c_engine_setup_i2c_engine(
+ struct i2c_engine *engine);
+
+void dal_i2c_engine_submit_channel_request(
+ struct i2c_engine *engine,
+ struct i2c_request_transaction_data *request);
+
+void dal_i2c_engine_process_channel_reply(
+ struct i2c_engine *engine,
+ struct i2c_reply_transaction_data *reply);
+
+bool dal_i2c_engine_acquire(
+ struct engine *ptr,
+ struct ddc *ddc_handle);
+
+#endif