2 * Copyright 2012-15 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
27 * Pre-requisites: headers required by header of this unit
30 #include <linux/slab.h>
32 #include "dm_services.h"
34 #include "include/gpio_interface.h"
35 #include "include/gpio_service_interface.h"
37 #include "hw_translate.h"
38 #include "hw_factory.h"
39 #include "gpio_service.h"
42 * Post-requisites: headers required by this unit
54 enum gpio_result dal_gpio_open(
58 return dal_gpio_open_ex(gpio, mode);
61 enum gpio_result dal_gpio_open_ex(
66 ASSERT_CRITICAL(false);
67 return GPIO_RESULT_ALREADY_OPENED;
70 // No action if allocation failed during gpio construct
71 if (!gpio->hw_container.ddc) {
72 ASSERT_CRITICAL(false);
73 return GPIO_RESULT_NON_SPECIFIC_ERROR;
77 return dal_gpio_service_open(gpio);
80 enum gpio_result dal_gpio_get_value(
81 const struct gpio *gpio,
86 return GPIO_RESULT_NULL_HANDLE;
89 return gpio->pin->funcs->get_value(gpio->pin, value);
92 enum gpio_result dal_gpio_set_value(
93 const struct gpio *gpio,
98 return GPIO_RESULT_NULL_HANDLE;
101 return gpio->pin->funcs->set_value(gpio->pin, value);
104 enum gpio_mode dal_gpio_get_mode(
105 const struct gpio *gpio)
110 enum gpio_result dal_gpio_lock_pin(
113 return dal_gpio_service_lock(gpio->service, gpio->id, gpio->en);
116 enum gpio_result dal_gpio_unlock_pin(
119 return dal_gpio_service_unlock(gpio->service, gpio->id, gpio->en);
122 enum gpio_result dal_gpio_change_mode(
128 return GPIO_RESULT_NULL_HANDLE;
131 return gpio->pin->funcs->change_mode(gpio->pin, mode);
134 enum gpio_id dal_gpio_get_id(
135 const struct gpio *gpio)
140 uint32_t dal_gpio_get_enum(
141 const struct gpio *gpio)
146 enum gpio_result dal_gpio_set_config(
148 const struct gpio_config_data *config_data)
152 return GPIO_RESULT_NULL_HANDLE;
155 return gpio->pin->funcs->set_config(gpio->pin, config_data);
158 enum gpio_result dal_gpio_get_pin_info(
159 const struct gpio *gpio,
160 struct gpio_pin_info *pin_info)
162 return gpio->service->translate.funcs->id_to_offset(
163 gpio->id, gpio->en, pin_info) ?
164 GPIO_RESULT_OK : GPIO_RESULT_INVALID_DATA;
167 enum sync_source dal_gpio_get_sync_source(
168 const struct gpio *gpio)
171 case GPIO_ID_GENERIC:
174 return SYNC_SOURCE_IO_GENERIC_A;
176 return SYNC_SOURCE_IO_GENERIC_B;
178 return SYNC_SOURCE_IO_GENERIC_C;
180 return SYNC_SOURCE_IO_GENERIC_D;
182 return SYNC_SOURCE_IO_GENERIC_E;
184 return SYNC_SOURCE_IO_GENERIC_F;
186 return SYNC_SOURCE_NONE;
191 case GPIO_SYNC_HSYNC_A:
192 return SYNC_SOURCE_IO_HSYNC_A;
193 case GPIO_SYNC_VSYNC_A:
194 return SYNC_SOURCE_IO_VSYNC_A;
195 case GPIO_SYNC_HSYNC_B:
196 return SYNC_SOURCE_IO_HSYNC_B;
197 case GPIO_SYNC_VSYNC_B:
198 return SYNC_SOURCE_IO_VSYNC_B;
200 return SYNC_SOURCE_NONE;
206 return SYNC_SOURCE_IO_HPD1;
208 return SYNC_SOURCE_IO_HPD2;
210 return SYNC_SOURCE_NONE;
215 case GPIO_GSL_GENLOCK_CLOCK:
216 return SYNC_SOURCE_GSL_IO_GENLOCK_CLOCK;
217 case GPIO_GSL_GENLOCK_VSYNC:
218 return SYNC_SOURCE_GSL_IO_GENLOCK_VSYNC;
219 case GPIO_GSL_SWAPLOCK_A:
220 return SYNC_SOURCE_GSL_IO_SWAPLOCK_A;
221 case GPIO_GSL_SWAPLOCK_B:
222 return SYNC_SOURCE_GSL_IO_SWAPLOCK_B;
224 return SYNC_SOURCE_NONE;
228 return SYNC_SOURCE_NONE;
232 enum gpio_pin_output_state dal_gpio_get_output_state(
233 const struct gpio *gpio)
235 return gpio->output_state;
238 struct hw_ddc *dal_gpio_get_ddc(struct gpio *gpio)
240 return gpio->hw_container.ddc;
243 struct hw_hpd *dal_gpio_get_hpd(struct gpio *gpio)
245 return gpio->hw_container.hpd;
248 struct hw_generic *dal_gpio_get_generic(struct gpio *gpio)
250 return gpio->hw_container.generic;
259 dal_gpio_service_close(gpio->service, &gpio->pin);
261 gpio->mode = GPIO_MODE_UNKNOWN;
266 * Creation and destruction
269 struct gpio *dal_gpio_create(
270 struct gpio_service *service,
273 enum gpio_pin_output_state output_state)
275 struct gpio *gpio = kzalloc(sizeof(struct gpio), GFP_KERNEL);
278 ASSERT_CRITICAL(false);
282 gpio->service = service;
286 gpio->mode = GPIO_MODE_UNKNOWN;
287 gpio->output_state = output_state;
289 //initialize hw_container union based on id
291 case GPIO_ID_DDC_DATA:
292 gpio->service->factory.funcs->init_ddc_data(&gpio->hw_container.ddc, service->ctx, id, en);
294 case GPIO_ID_DDC_CLOCK:
295 gpio->service->factory.funcs->init_ddc_data(&gpio->hw_container.ddc, service->ctx, id, en);
297 case GPIO_ID_GENERIC:
298 gpio->service->factory.funcs->init_generic(&gpio->hw_container.generic, service->ctx, id, en);
301 gpio->service->factory.funcs->init_hpd(&gpio->hw_container.hpd, service->ctx, id, en);
303 // TODO: currently gpio for sync and gsl does not get created, might need it later
309 ASSERT_CRITICAL(false);
316 void dal_gpio_destroy(
319 if (!gpio || !*gpio) {
320 ASSERT_CRITICAL(false);
324 switch ((*gpio)->id) {
325 case GPIO_ID_DDC_DATA:
326 kfree((*gpio)->hw_container.ddc);
327 (*gpio)->hw_container.ddc = NULL;
329 case GPIO_ID_DDC_CLOCK:
330 //TODO: might want to change it to init_ddc_clock
331 kfree((*gpio)->hw_container.ddc);
332 (*gpio)->hw_container.ddc = NULL;
334 case GPIO_ID_GENERIC:
335 kfree((*gpio)->hw_container.generic);
336 (*gpio)->hw_container.generic = NULL;
339 kfree((*gpio)->hw_container.hpd);
340 (*gpio)->hw_container.hpd = NULL;
342 // TODO: currently gpio for sync and gsl does not get created, might need it later