Lines Matching refs:drv_data
23 static int pxa2xx_spi_map_dma_buffer(struct driver_data *drv_data, in pxa2xx_spi_map_dma_buffer() argument
26 int i, nents, len = drv_data->len; in pxa2xx_spi_map_dma_buffer()
33 dmadev = drv_data->tx_chan->device->dev; in pxa2xx_spi_map_dma_buffer()
34 sgt = &drv_data->tx_sgt; in pxa2xx_spi_map_dma_buffer()
35 buf = drv_data->tx; in pxa2xx_spi_map_dma_buffer()
36 drv_data->tx_map_len = len; in pxa2xx_spi_map_dma_buffer()
38 dmadev = drv_data->rx_chan->device->dev; in pxa2xx_spi_map_dma_buffer()
39 sgt = &drv_data->rx_sgt; in pxa2xx_spi_map_dma_buffer()
40 buf = drv_data->rx; in pxa2xx_spi_map_dma_buffer()
41 drv_data->rx_map_len = len; in pxa2xx_spi_map_dma_buffer()
61 sg_set_buf(sg, drv_data->dummy, bytes); in pxa2xx_spi_map_dma_buffer()
74 static void pxa2xx_spi_unmap_dma_buffer(struct driver_data *drv_data, in pxa2xx_spi_unmap_dma_buffer() argument
81 dmadev = drv_data->tx_chan->device->dev; in pxa2xx_spi_unmap_dma_buffer()
82 sgt = &drv_data->tx_sgt; in pxa2xx_spi_unmap_dma_buffer()
84 dmadev = drv_data->rx_chan->device->dev; in pxa2xx_spi_unmap_dma_buffer()
85 sgt = &drv_data->rx_sgt; in pxa2xx_spi_unmap_dma_buffer()
91 static void pxa2xx_spi_unmap_dma_buffers(struct driver_data *drv_data) in pxa2xx_spi_unmap_dma_buffers() argument
93 if (!drv_data->dma_mapped) in pxa2xx_spi_unmap_dma_buffers()
96 pxa2xx_spi_unmap_dma_buffer(drv_data, DMA_FROM_DEVICE); in pxa2xx_spi_unmap_dma_buffers()
97 pxa2xx_spi_unmap_dma_buffer(drv_data, DMA_TO_DEVICE); in pxa2xx_spi_unmap_dma_buffers()
99 drv_data->dma_mapped = 0; in pxa2xx_spi_unmap_dma_buffers()
102 static void pxa2xx_spi_dma_transfer_complete(struct driver_data *drv_data, in pxa2xx_spi_dma_transfer_complete() argument
105 struct spi_message *msg = drv_data->cur_msg; in pxa2xx_spi_dma_transfer_complete()
113 if (atomic_dec_and_test(&drv_data->dma_running)) { in pxa2xx_spi_dma_transfer_complete()
120 u32 status = pxa2xx_spi_read(drv_data, SSSR) in pxa2xx_spi_dma_transfer_complete()
121 & drv_data->mask_sr; in pxa2xx_spi_dma_transfer_complete()
126 pxa2xx_spi_write(drv_data, SSCR1, in pxa2xx_spi_dma_transfer_complete()
127 pxa2xx_spi_read(drv_data, SSCR1) in pxa2xx_spi_dma_transfer_complete()
128 & ~drv_data->dma_cr1); in pxa2xx_spi_dma_transfer_complete()
129 write_SSSR_CS(drv_data, drv_data->clear_sr); in pxa2xx_spi_dma_transfer_complete()
130 if (!pxa25x_ssp_comp(drv_data)) in pxa2xx_spi_dma_transfer_complete()
131 pxa2xx_spi_write(drv_data, SSTO, 0); in pxa2xx_spi_dma_transfer_complete()
134 pxa2xx_spi_unmap_dma_buffers(drv_data); in pxa2xx_spi_dma_transfer_complete()
136 drv_data->tx += drv_data->tx_map_len; in pxa2xx_spi_dma_transfer_complete()
137 drv_data->rx += drv_data->rx_map_len; in pxa2xx_spi_dma_transfer_complete()
139 msg->actual_length += drv_data->len; in pxa2xx_spi_dma_transfer_complete()
140 msg->state = pxa2xx_spi_next_transfer(drv_data); in pxa2xx_spi_dma_transfer_complete()
143 pxa2xx_spi_write(drv_data, SSCR0, in pxa2xx_spi_dma_transfer_complete()
144 pxa2xx_spi_read(drv_data, SSCR0) in pxa2xx_spi_dma_transfer_complete()
150 tasklet_schedule(&drv_data->pump_transfers); in pxa2xx_spi_dma_transfer_complete()
160 pxa2xx_spi_dma_prepare_one(struct driver_data *drv_data, in pxa2xx_spi_dma_prepare_one() argument
163 struct chip_data *chip = drv_data->cur_chip; in pxa2xx_spi_dma_prepare_one()
170 switch (drv_data->n_bytes) { in pxa2xx_spi_dma_prepare_one()
186 cfg.dst_addr = drv_data->ssdr_physical; in pxa2xx_spi_dma_prepare_one()
190 sgt = &drv_data->tx_sgt; in pxa2xx_spi_dma_prepare_one()
191 nents = drv_data->tx_nents; in pxa2xx_spi_dma_prepare_one()
192 chan = drv_data->tx_chan; in pxa2xx_spi_dma_prepare_one()
194 cfg.src_addr = drv_data->ssdr_physical; in pxa2xx_spi_dma_prepare_one()
198 sgt = &drv_data->rx_sgt; in pxa2xx_spi_dma_prepare_one()
199 nents = drv_data->rx_nents; in pxa2xx_spi_dma_prepare_one()
200 chan = drv_data->rx_chan; in pxa2xx_spi_dma_prepare_one()
205 dev_warn(&drv_data->pdev->dev, "DMA slave config failed\n"); in pxa2xx_spi_dma_prepare_one()
218 int pxa2xx_spi_map_dma_buffers(struct driver_data *drv_data) in pxa2xx_spi_map_dma_buffers() argument
220 const struct chip_data *chip = drv_data->cur_chip; in pxa2xx_spi_map_dma_buffers()
227 if (drv_data->len < chip->dma_burst_size) in pxa2xx_spi_map_dma_buffers()
230 ret = pxa2xx_spi_map_dma_buffer(drv_data, DMA_TO_DEVICE); in pxa2xx_spi_map_dma_buffers()
232 dev_warn(&drv_data->pdev->dev, "failed to DMA map TX\n"); in pxa2xx_spi_map_dma_buffers()
236 drv_data->tx_nents = ret; in pxa2xx_spi_map_dma_buffers()
238 ret = pxa2xx_spi_map_dma_buffer(drv_data, DMA_FROM_DEVICE); in pxa2xx_spi_map_dma_buffers()
240 pxa2xx_spi_unmap_dma_buffer(drv_data, DMA_TO_DEVICE); in pxa2xx_spi_map_dma_buffers()
241 dev_warn(&drv_data->pdev->dev, "failed to DMA map RX\n"); in pxa2xx_spi_map_dma_buffers()
245 drv_data->rx_nents = ret; in pxa2xx_spi_map_dma_buffers()
249 irqreturn_t pxa2xx_spi_dma_transfer(struct driver_data *drv_data) in pxa2xx_spi_dma_transfer() argument
253 status = pxa2xx_spi_read(drv_data, SSSR) & drv_data->mask_sr; in pxa2xx_spi_dma_transfer()
255 dev_err(&drv_data->pdev->dev, "FIFO overrun\n"); in pxa2xx_spi_dma_transfer()
257 dmaengine_terminate_all(drv_data->rx_chan); in pxa2xx_spi_dma_transfer()
258 dmaengine_terminate_all(drv_data->tx_chan); in pxa2xx_spi_dma_transfer()
260 pxa2xx_spi_dma_transfer_complete(drv_data, true); in pxa2xx_spi_dma_transfer()
267 int pxa2xx_spi_dma_prepare(struct driver_data *drv_data, u32 dma_burst) in pxa2xx_spi_dma_prepare() argument
271 tx_desc = pxa2xx_spi_dma_prepare_one(drv_data, DMA_MEM_TO_DEV); in pxa2xx_spi_dma_prepare()
273 dev_err(&drv_data->pdev->dev, in pxa2xx_spi_dma_prepare()
278 rx_desc = pxa2xx_spi_dma_prepare_one(drv_data, DMA_DEV_TO_MEM); in pxa2xx_spi_dma_prepare()
280 dev_err(&drv_data->pdev->dev, in pxa2xx_spi_dma_prepare()
287 rx_desc->callback_param = drv_data; in pxa2xx_spi_dma_prepare()
294 void pxa2xx_spi_dma_start(struct driver_data *drv_data) in pxa2xx_spi_dma_start() argument
296 dma_async_issue_pending(drv_data->rx_chan); in pxa2xx_spi_dma_start()
297 dma_async_issue_pending(drv_data->tx_chan); in pxa2xx_spi_dma_start()
299 atomic_set(&drv_data->dma_running, 1); in pxa2xx_spi_dma_start()
302 int pxa2xx_spi_dma_setup(struct driver_data *drv_data) in pxa2xx_spi_dma_setup() argument
304 struct pxa2xx_spi_master *pdata = drv_data->master_info; in pxa2xx_spi_dma_setup()
305 struct device *dev = &drv_data->pdev->dev; in pxa2xx_spi_dma_setup()
311 drv_data->dummy = devm_kzalloc(dev, SZ_2K, GFP_KERNEL); in pxa2xx_spi_dma_setup()
312 if (!drv_data->dummy) in pxa2xx_spi_dma_setup()
315 drv_data->tx_chan = dma_request_slave_channel_compat(mask, in pxa2xx_spi_dma_setup()
317 if (!drv_data->tx_chan) in pxa2xx_spi_dma_setup()
320 drv_data->rx_chan = dma_request_slave_channel_compat(mask, in pxa2xx_spi_dma_setup()
322 if (!drv_data->rx_chan) { in pxa2xx_spi_dma_setup()
323 dma_release_channel(drv_data->tx_chan); in pxa2xx_spi_dma_setup()
324 drv_data->tx_chan = NULL; in pxa2xx_spi_dma_setup()
331 void pxa2xx_spi_dma_release(struct driver_data *drv_data) in pxa2xx_spi_dma_release() argument
333 if (drv_data->rx_chan) { in pxa2xx_spi_dma_release()
334 dmaengine_terminate_all(drv_data->rx_chan); in pxa2xx_spi_dma_release()
335 dma_release_channel(drv_data->rx_chan); in pxa2xx_spi_dma_release()
336 sg_free_table(&drv_data->rx_sgt); in pxa2xx_spi_dma_release()
337 drv_data->rx_chan = NULL; in pxa2xx_spi_dma_release()
339 if (drv_data->tx_chan) { in pxa2xx_spi_dma_release()
340 dmaengine_terminate_all(drv_data->tx_chan); in pxa2xx_spi_dma_release()
341 dma_release_channel(drv_data->tx_chan); in pxa2xx_spi_dma_release()
342 sg_free_table(&drv_data->tx_sgt); in pxa2xx_spi_dma_release()
343 drv_data->tx_chan = NULL; in pxa2xx_spi_dma_release()
347 void pxa2xx_spi_dma_resume(struct driver_data *drv_data) in pxa2xx_spi_dma_resume() argument