5  * SPDX-License-Identifier: Apache-2.0
9  * @brief Common part of DMAMUX drivers for stm32.
32 /* this is the configuration of one dmamux channel */
40 /* the table of all the dmamux channel */
47 /* this is the configuration of the dmamux IP */
99 	if (dev_config->base == DT_REG_ADDR(DT_NODELABEL(dmamux1))) {  in get_dma_fops()
105 	if (dev_config->base == DT_REG_ADDR(DT_NODELABEL(dmamux2))) {  in get_dma_fops()
110 	__ASSERT(false, "Unknown dma base address %x", dev_config->base);  in get_dma_fops()
117 	/* device is the dmamux, id is the dmamux channel from 0 */  in dmamux_stm32_configure()
118 	const struct dmamux_stm32_config *dev_config = dev->config;  in dmamux_stm32_configure()
125 	int request_id = config->dma_slot;  in dmamux_stm32_configure()
127 	if (request_id > dev_config->req_nb + dev_config->gen_nb) {  in dmamux_stm32_configure()
129 		return -EINVAL;  in dmamux_stm32_configure()
133 	if (id >= dev_config->channel_nb) {  in dmamux_stm32_configure()
135 		return -EINVAL;  in dmamux_stm32_configure()
146 	 * This dmamux channel 'id' is now used for this peripheral request  in dmamux_stm32_configure()
149 	if (dma_device->configure(dev_config->mux_channels[id].dev_dma,  in dmamux_stm32_configure()
150 			dev_config->mux_channels[id].dma_id, config) != 0) {  in dmamux_stm32_configure()
151 		LOG_ERR("cannot configure the dmamux.");  in dmamux_stm32_configure()
152 		return -EINVAL;  in dmamux_stm32_configure()
155 	/* set the Request Line ID to this dmamux channel i */  in dmamux_stm32_configure()
156 	DMAMUX_Channel_TypeDef *dmamux =  in dmamux_stm32_configure()  local
157 			(DMAMUX_Channel_TypeDef *)dev_config->base;  in dmamux_stm32_configure()
160 	LL_DMAMUX_SetRequestID(dmamux, id, request_id);  in dmamux_stm32_configure()
167 	const struct dmamux_stm32_config *dev_config = dev->config;  in dmamux_stm32_start()
171 	if (id >= dev_config->channel_nb) {  in dmamux_stm32_start()
173 		return -EINVAL;  in dmamux_stm32_start()
176 	if (dma_device->start(dev_config->mux_channels[id].dev_dma,  in dmamux_stm32_start()
177 		dev_config->mux_channels[id].dma_id) != 0) {  in dmamux_stm32_start()
178 		LOG_ERR("cannot start the dmamux channel %d.", id);  in dmamux_stm32_start()
179 		return -EINVAL;  in dmamux_stm32_start()
187 	const struct dmamux_stm32_config *dev_config = dev->config;  in dmamux_stm32_stop()
191 	if (id >= dev_config->channel_nb) {  in dmamux_stm32_stop()
193 		return -EINVAL;  in dmamux_stm32_stop()
196 	if (dma_device->stop(dev_config->mux_channels[id].dev_dma,  in dmamux_stm32_stop()
197 		dev_config->mux_channels[id].dma_id) != 0) {  in dmamux_stm32_stop()
198 		LOG_ERR("cannot stop the dmamux channel %d.", id);  in dmamux_stm32_stop()
199 		return -EINVAL;  in dmamux_stm32_stop()
208 	const struct dmamux_stm32_config *dev_config = dev->config;  in dmamux_stm32_reload()
212 	if (id >= dev_config->channel_nb) {  in dmamux_stm32_reload()
214 		return -EINVAL;  in dmamux_stm32_reload()
217 	if (dma_device->reload(dev_config->mux_channels[id].dev_dma,  in dmamux_stm32_reload()
218 		dev_config->mux_channels[id].dma_id,  in dmamux_stm32_reload()
220 		LOG_ERR("cannot reload the dmamux channel %d.", id);  in dmamux_stm32_reload()
221 		return -EINVAL;  in dmamux_stm32_reload()
230 	const struct dmamux_stm32_config *dev_config = dev->config;  in dmamux_stm32_get_status()
234 	if (id >= dev_config->channel_nb) {  in dmamux_stm32_get_status()
236 		return -EINVAL;  in dmamux_stm32_get_status()
239 	if (dma_device->get_status(dev_config->mux_channels[id].dev_dma,  in dmamux_stm32_get_status()
240 		dev_config->mux_channels[id].dma_id, stat) != 0) {  in dmamux_stm32_get_status()
241 		LOG_ERR("cannot get the status of dmamux channel %d.", id);  in dmamux_stm32_get_status()
242 		return -EINVAL;  in dmamux_stm32_get_status()
250 	const struct dmamux_stm32_config *config = dev->config;  in dmamux_stm32_init()
256 		return -ENODEV;  in dmamux_stm32_init()
260 		(clock_control_subsys_t) &config->pclken) != 0) {  in dmamux_stm32_init()
262 		return -EIO;  in dmamux_stm32_init()
268 	if (config->base == DT_REG_ADDR(DT_NODELABEL(dmamux1))) {  in dmamux_stm32_init()
269 		/* DMAs assigned to DMAMUX channels at build time might not be ready. */  in dmamux_stm32_init()
272 			return -ENODEV;  in dmamux_stm32_init()
277 			return -ENODEV;  in dmamux_stm32_init()
284 	if (config->base == DT_REG_ADDR(DT_NODELABEL(dmamux2))) {  in dmamux_stm32_init()
286 			return -ENODEV;  in dmamux_stm32_init()
302  * Each dmamux channel is hardwired to one dma controllers dma channel.
304  * dmamux channel using the dma dt properties dma_offset and dma_requests,
307  * for a given dmamux channel, are currently valid for series having
338 	 (mux_channel + 1) : (mux_channel - DMA_2_BEGIN_DMAMUX_CHANNEL + 1))
349  * Note: Instance Number (or index) has no guarantee to which dmamux it refers