Lines Matching refs:spi_imx
142 static void spi_imx_buf_rx_##type(struct spi_imx_data *spi_imx) \
144 unsigned int val = readl(spi_imx->base + MXC_CSPIRXDATA); \
146 if (spi_imx->rx_buf) { \
147 *(type *)spi_imx->rx_buf = val; \
148 spi_imx->rx_buf += sizeof(type); \
151 spi_imx->remainder -= sizeof(type); \
155 static void spi_imx_buf_tx_##type(struct spi_imx_data *spi_imx) \
159 if (spi_imx->tx_buf) { \
160 val = *(type *)spi_imx->tx_buf; \
161 spi_imx->tx_buf += sizeof(type); \
164 spi_imx->count -= sizeof(type); \
166 writel(val, spi_imx->base + MXC_CSPITXDATA); \
226 struct spi_imx_data *spi_imx = spi_master_get_devdata(master); in spi_imx_can_dma() local
234 if (spi_imx->slave_mode) in spi_imx_can_dma()
237 if (transfer->len < spi_imx->devtype_data->fifo_size) in spi_imx_can_dma()
240 spi_imx->dynamic_burst = 0; in spi_imx_can_dma()
284 static void spi_imx_buf_rx_swap_u32(struct spi_imx_data *spi_imx) in spi_imx_buf_rx_swap_u32() argument
286 unsigned int val = readl(spi_imx->base + MXC_CSPIRXDATA); in spi_imx_buf_rx_swap_u32()
291 if (spi_imx->rx_buf) { in spi_imx_buf_rx_swap_u32()
293 bytes_per_word = spi_imx_bytes_per_word(spi_imx->bits_per_word); in spi_imx_buf_rx_swap_u32()
299 *(u32 *)spi_imx->rx_buf = val; in spi_imx_buf_rx_swap_u32()
300 spi_imx->rx_buf += sizeof(u32); in spi_imx_buf_rx_swap_u32()
303 spi_imx->remainder -= sizeof(u32); in spi_imx_buf_rx_swap_u32()
306 static void spi_imx_buf_rx_swap(struct spi_imx_data *spi_imx) in spi_imx_buf_rx_swap() argument
311 unaligned = spi_imx->remainder % 4; in spi_imx_buf_rx_swap()
314 spi_imx_buf_rx_swap_u32(spi_imx); in spi_imx_buf_rx_swap()
318 if (spi_imx_bytes_per_word(spi_imx->bits_per_word) == 2) { in spi_imx_buf_rx_swap()
319 spi_imx_buf_rx_u16(spi_imx); in spi_imx_buf_rx_swap()
323 val = readl(spi_imx->base + MXC_CSPIRXDATA); in spi_imx_buf_rx_swap()
326 if (spi_imx->rx_buf) { in spi_imx_buf_rx_swap()
327 *(u8 *)spi_imx->rx_buf = (val >> (8 * unaligned)) & 0xff; in spi_imx_buf_rx_swap()
328 spi_imx->rx_buf++; in spi_imx_buf_rx_swap()
330 spi_imx->remainder--; in spi_imx_buf_rx_swap()
334 static void spi_imx_buf_tx_swap_u32(struct spi_imx_data *spi_imx) in spi_imx_buf_tx_swap_u32() argument
341 if (spi_imx->tx_buf) { in spi_imx_buf_tx_swap_u32()
342 val = *(u32 *)spi_imx->tx_buf; in spi_imx_buf_tx_swap_u32()
343 spi_imx->tx_buf += sizeof(u32); in spi_imx_buf_tx_swap_u32()
346 spi_imx->count -= sizeof(u32); in spi_imx_buf_tx_swap_u32()
348 bytes_per_word = spi_imx_bytes_per_word(spi_imx->bits_per_word); in spi_imx_buf_tx_swap_u32()
355 writel(val, spi_imx->base + MXC_CSPITXDATA); in spi_imx_buf_tx_swap_u32()
358 static void spi_imx_buf_tx_swap(struct spi_imx_data *spi_imx) in spi_imx_buf_tx_swap() argument
363 unaligned = spi_imx->count % 4; in spi_imx_buf_tx_swap()
366 spi_imx_buf_tx_swap_u32(spi_imx); in spi_imx_buf_tx_swap()
370 if (spi_imx_bytes_per_word(spi_imx->bits_per_word) == 2) { in spi_imx_buf_tx_swap()
371 spi_imx_buf_tx_u16(spi_imx); in spi_imx_buf_tx_swap()
376 if (spi_imx->tx_buf) { in spi_imx_buf_tx_swap()
377 val |= *(u8 *)spi_imx->tx_buf << (8 * unaligned); in spi_imx_buf_tx_swap()
378 spi_imx->tx_buf++; in spi_imx_buf_tx_swap()
380 spi_imx->count--; in spi_imx_buf_tx_swap()
383 writel(val, spi_imx->base + MXC_CSPITXDATA); in spi_imx_buf_tx_swap()
386 static void mx53_ecspi_rx_slave(struct spi_imx_data *spi_imx) in mx53_ecspi_rx_slave() argument
388 u32 val = be32_to_cpu(readl(spi_imx->base + MXC_CSPIRXDATA)); in mx53_ecspi_rx_slave()
390 if (spi_imx->rx_buf) { in mx53_ecspi_rx_slave()
391 int n_bytes = spi_imx->slave_burst % sizeof(val); in mx53_ecspi_rx_slave()
396 memcpy(spi_imx->rx_buf, in mx53_ecspi_rx_slave()
399 spi_imx->rx_buf += n_bytes; in mx53_ecspi_rx_slave()
400 spi_imx->slave_burst -= n_bytes; in mx53_ecspi_rx_slave()
403 spi_imx->remainder -= sizeof(u32); in mx53_ecspi_rx_slave()
406 static void mx53_ecspi_tx_slave(struct spi_imx_data *spi_imx) in mx53_ecspi_tx_slave() argument
409 int n_bytes = spi_imx->count % sizeof(val); in mx53_ecspi_tx_slave()
414 if (spi_imx->tx_buf) { in mx53_ecspi_tx_slave()
416 spi_imx->tx_buf, n_bytes); in mx53_ecspi_tx_slave()
418 spi_imx->tx_buf += n_bytes; in mx53_ecspi_tx_slave()
421 spi_imx->count -= n_bytes; in mx53_ecspi_tx_slave()
423 writel(val, spi_imx->base + MXC_CSPITXDATA); in mx53_ecspi_tx_slave()
427 static unsigned int mx51_ecspi_clkdiv(struct spi_imx_data *spi_imx, in mx51_ecspi_clkdiv() argument
435 unsigned int fin = spi_imx->spi_clk; in mx51_ecspi_clkdiv()
447 dev_err(spi_imx->dev, "cannot set clock freq: %u (base freq: %u)\n", in mx51_ecspi_clkdiv()
454 dev_dbg(spi_imx->dev, "%s: fin: %u, fspi: %u, post: %u, pre: %u\n", in mx51_ecspi_clkdiv()
464 static void mx51_ecspi_intctrl(struct spi_imx_data *spi_imx, int enable) in mx51_ecspi_intctrl() argument
477 writel(val, spi_imx->base + MX51_ECSPI_INT); in mx51_ecspi_intctrl()
480 static void mx51_ecspi_trigger(struct spi_imx_data *spi_imx) in mx51_ecspi_trigger() argument
484 reg = readl(spi_imx->base + MX51_ECSPI_CTRL); in mx51_ecspi_trigger()
486 writel(reg, spi_imx->base + MX51_ECSPI_CTRL); in mx51_ecspi_trigger()
489 static void mx51_disable_dma(struct spi_imx_data *spi_imx) in mx51_disable_dma() argument
491 writel(0, spi_imx->base + MX51_ECSPI_DMA); in mx51_disable_dma()
494 static void mx51_ecspi_disable(struct spi_imx_data *spi_imx) in mx51_ecspi_disable() argument
498 ctrl = readl(spi_imx->base + MX51_ECSPI_CTRL); in mx51_ecspi_disable()
500 writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); in mx51_ecspi_disable()
503 static int mx51_ecspi_prepare_message(struct spi_imx_data *spi_imx, in mx51_ecspi_prepare_message() argument
511 u32 cfg = readl(spi_imx->base + MX51_ECSPI_CONFIG); in mx51_ecspi_prepare_message()
514 if (spi_imx->slave_mode) in mx51_ecspi_prepare_message()
523 ctrl |= MX51_ECSPI_CTRL_DRCTL(spi_imx->spi_drctl); in mx51_ecspi_prepare_message()
532 writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); in mx51_ecspi_prepare_message()
534 testreg = readl(spi_imx->base + MX51_ECSPI_TESTREG); in mx51_ecspi_prepare_message()
539 writel(testreg, spi_imx->base + MX51_ECSPI_TESTREG); in mx51_ecspi_prepare_message()
546 if (spi_imx->slave_mode && is_imx53_ecspi(spi_imx)) in mx51_ecspi_prepare_message()
569 writel(cfg, spi_imx->base + MX51_ECSPI_CONFIG); in mx51_ecspi_prepare_message()
603 static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx, in mx51_ecspi_prepare_transfer() argument
606 u32 ctrl = readl(spi_imx->base + MX51_ECSPI_CTRL); in mx51_ecspi_prepare_transfer()
611 if (spi_imx->slave_mode && is_imx53_ecspi(spi_imx)) in mx51_ecspi_prepare_transfer()
612 ctrl |= (spi_imx->slave_burst * 8 - 1) in mx51_ecspi_prepare_transfer()
615 ctrl |= (spi_imx->bits_per_word - 1) in mx51_ecspi_prepare_transfer()
621 ctrl |= mx51_ecspi_clkdiv(spi_imx, spi_imx->spi_bus_clk, &clk); in mx51_ecspi_prepare_transfer()
622 spi_imx->spi_bus_clk = clk; in mx51_ecspi_prepare_transfer()
624 if (spi_imx->usedma) in mx51_ecspi_prepare_transfer()
627 writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); in mx51_ecspi_prepare_transfer()
632 static void mx51_setup_wml(struct spi_imx_data *spi_imx) in mx51_setup_wml() argument
638 writel(MX51_ECSPI_DMA_RX_WML(spi_imx->wml - 1) | in mx51_setup_wml()
639 MX51_ECSPI_DMA_TX_WML(spi_imx->wml) | in mx51_setup_wml()
640 MX51_ECSPI_DMA_RXT_WML(spi_imx->wml) | in mx51_setup_wml()
642 MX51_ECSPI_DMA_RXTDEN, spi_imx->base + MX51_ECSPI_DMA); in mx51_setup_wml()
645 static int mx51_ecspi_rx_available(struct spi_imx_data *spi_imx) in mx51_ecspi_rx_available() argument
647 return readl(spi_imx->base + MX51_ECSPI_STAT) & MX51_ECSPI_STAT_RR; in mx51_ecspi_rx_available()
650 static void mx51_ecspi_reset(struct spi_imx_data *spi_imx) in mx51_ecspi_reset() argument
653 while (mx51_ecspi_rx_available(spi_imx)) in mx51_ecspi_reset()
654 readl(spi_imx->base + MXC_CSPIRXDATA); in mx51_ecspi_reset()
688 static void mx31_intctrl(struct spi_imx_data *spi_imx, int enable) in mx31_intctrl() argument
697 writel(val, spi_imx->base + MXC_CSPIINT); in mx31_intctrl()
700 static void mx31_trigger(struct spi_imx_data *spi_imx) in mx31_trigger() argument
704 reg = readl(spi_imx->base + MXC_CSPICTRL); in mx31_trigger()
706 writel(reg, spi_imx->base + MXC_CSPICTRL); in mx31_trigger()
709 static int mx31_prepare_message(struct spi_imx_data *spi_imx, in mx31_prepare_message() argument
715 static int mx31_prepare_transfer(struct spi_imx_data *spi_imx, in mx31_prepare_transfer() argument
721 reg |= spi_imx_clkdiv_2(spi_imx->spi_clk, spi_imx->spi_bus_clk, &clk) << in mx31_prepare_transfer()
723 spi_imx->spi_bus_clk = clk; in mx31_prepare_transfer()
725 if (is_imx35_cspi(spi_imx)) { in mx31_prepare_transfer()
726 reg |= (spi_imx->bits_per_word - 1) << MX35_CSPICTRL_BL_SHIFT; in mx31_prepare_transfer()
729 reg |= (spi_imx->bits_per_word - 1) << MX31_CSPICTRL_BC_SHIFT; in mx31_prepare_transfer()
740 (is_imx35_cspi(spi_imx) ? MX35_CSPICTRL_CS_SHIFT : in mx31_prepare_transfer()
743 if (spi_imx->usedma) in mx31_prepare_transfer()
746 writel(reg, spi_imx->base + MXC_CSPICTRL); in mx31_prepare_transfer()
748 reg = readl(spi_imx->base + MX31_CSPI_TESTREG); in mx31_prepare_transfer()
753 writel(reg, spi_imx->base + MX31_CSPI_TESTREG); in mx31_prepare_transfer()
755 if (spi_imx->usedma) { in mx31_prepare_transfer()
761 spi_imx->base + MX31_CSPI_DMAREG); in mx31_prepare_transfer()
767 static int mx31_rx_available(struct spi_imx_data *spi_imx) in mx31_rx_available() argument
769 return readl(spi_imx->base + MX31_CSPISTATUS) & MX31_STATUS_RR; in mx31_rx_available()
772 static void mx31_reset(struct spi_imx_data *spi_imx) in mx31_reset() argument
775 while (readl(spi_imx->base + MX31_CSPISTATUS) & MX31_STATUS_RR) in mx31_reset()
776 readl(spi_imx->base + MXC_CSPIRXDATA); in mx31_reset()
792 static void mx21_intctrl(struct spi_imx_data *spi_imx, int enable) in mx21_intctrl() argument
801 writel(val, spi_imx->base + MXC_CSPIINT); in mx21_intctrl()
804 static void mx21_trigger(struct spi_imx_data *spi_imx) in mx21_trigger() argument
808 reg = readl(spi_imx->base + MXC_CSPICTRL); in mx21_trigger()
810 writel(reg, spi_imx->base + MXC_CSPICTRL); in mx21_trigger()
813 static int mx21_prepare_message(struct spi_imx_data *spi_imx, in mx21_prepare_message() argument
819 static int mx21_prepare_transfer(struct spi_imx_data *spi_imx, in mx21_prepare_transfer() argument
823 unsigned int max = is_imx27_cspi(spi_imx) ? 16 : 18; in mx21_prepare_transfer()
826 reg |= spi_imx_clkdiv_1(spi_imx->spi_clk, spi_imx->spi_bus_clk, max, &clk) in mx21_prepare_transfer()
828 spi_imx->spi_bus_clk = clk; in mx21_prepare_transfer()
830 reg |= spi_imx->bits_per_word - 1; in mx21_prepare_transfer()
841 writel(reg, spi_imx->base + MXC_CSPICTRL); in mx21_prepare_transfer()
846 static int mx21_rx_available(struct spi_imx_data *spi_imx) in mx21_rx_available() argument
848 return readl(spi_imx->base + MXC_CSPIINT) & MX21_INTREG_RR; in mx21_rx_available()
851 static void mx21_reset(struct spi_imx_data *spi_imx) in mx21_reset() argument
853 writel(1, spi_imx->base + MXC_RESET); in mx21_reset()
867 static void mx1_intctrl(struct spi_imx_data *spi_imx, int enable) in mx1_intctrl() argument
876 writel(val, spi_imx->base + MXC_CSPIINT); in mx1_intctrl()
879 static void mx1_trigger(struct spi_imx_data *spi_imx) in mx1_trigger() argument
883 reg = readl(spi_imx->base + MXC_CSPICTRL); in mx1_trigger()
885 writel(reg, spi_imx->base + MXC_CSPICTRL); in mx1_trigger()
888 static int mx1_prepare_message(struct spi_imx_data *spi_imx, in mx1_prepare_message() argument
894 static int mx1_prepare_transfer(struct spi_imx_data *spi_imx, in mx1_prepare_transfer() argument
900 reg |= spi_imx_clkdiv_2(spi_imx->spi_clk, spi_imx->spi_bus_clk, &clk) << in mx1_prepare_transfer()
902 spi_imx->spi_bus_clk = clk; in mx1_prepare_transfer()
904 reg |= spi_imx->bits_per_word - 1; in mx1_prepare_transfer()
911 writel(reg, spi_imx->base + MXC_CSPICTRL); in mx1_prepare_transfer()
916 static int mx1_rx_available(struct spi_imx_data *spi_imx) in mx1_rx_available() argument
918 return readl(spi_imx->base + MXC_CSPIINT) & MX1_INTREG_RR; in mx1_rx_available()
921 static void mx1_reset(struct spi_imx_data *spi_imx) in mx1_reset() argument
923 writel(1, spi_imx->base + MXC_RESET); in mx1_reset()
1069 static void spi_imx_set_burst_len(struct spi_imx_data *spi_imx, int n_bits) in spi_imx_set_burst_len() argument
1073 ctrl = readl(spi_imx->base + MX51_ECSPI_CTRL); in spi_imx_set_burst_len()
1076 writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); in spi_imx_set_burst_len()
1079 static void spi_imx_push(struct spi_imx_data *spi_imx) in spi_imx_push() argument
1083 if (spi_imx->dynamic_burst) in spi_imx_push()
1086 fifo_words = spi_imx_bytes_per_word(spi_imx->bits_per_word); in spi_imx_push()
1092 if (!spi_imx->remainder) { in spi_imx_push()
1093 if (spi_imx->dynamic_burst) { in spi_imx_push()
1096 burst_len = spi_imx->count % MX51_ECSPI_CTRL_MAX_BURST; in spi_imx_push()
1101 spi_imx_set_burst_len(spi_imx, burst_len * 8); in spi_imx_push()
1103 spi_imx->remainder = burst_len; in spi_imx_push()
1105 spi_imx->remainder = fifo_words; in spi_imx_push()
1109 while (spi_imx->txfifo < spi_imx->devtype_data->fifo_size) { in spi_imx_push()
1110 if (!spi_imx->count) in spi_imx_push()
1112 if (spi_imx->dynamic_burst && in spi_imx_push()
1113 spi_imx->txfifo >= DIV_ROUND_UP(spi_imx->remainder, in spi_imx_push()
1116 spi_imx->tx(spi_imx); in spi_imx_push()
1117 spi_imx->txfifo++; in spi_imx_push()
1120 if (!spi_imx->slave_mode) in spi_imx_push()
1121 spi_imx->devtype_data->trigger(spi_imx); in spi_imx_push()
1126 struct spi_imx_data *spi_imx = dev_id; in spi_imx_isr() local
1128 while (spi_imx->txfifo && in spi_imx_isr()
1129 spi_imx->devtype_data->rx_available(spi_imx)) { in spi_imx_isr()
1130 spi_imx->rx(spi_imx); in spi_imx_isr()
1131 spi_imx->txfifo--; in spi_imx_isr()
1134 if (spi_imx->count) { in spi_imx_isr()
1135 spi_imx_push(spi_imx); in spi_imx_isr()
1139 if (spi_imx->txfifo) { in spi_imx_isr()
1143 spi_imx->devtype_data->intctrl( in spi_imx_isr()
1144 spi_imx, MXC_INT_RR); in spi_imx_isr()
1148 spi_imx->devtype_data->intctrl(spi_imx, 0); in spi_imx_isr()
1149 complete(&spi_imx->xfer_done); in spi_imx_isr()
1159 struct spi_imx_data *spi_imx = spi_master_get_devdata(master); in spi_imx_dma_configure() local
1161 switch (spi_imx_bytes_per_word(spi_imx->bits_per_word)) { in spi_imx_dma_configure()
1176 tx.dst_addr = spi_imx->base_phys + MXC_CSPITXDATA; in spi_imx_dma_configure()
1178 tx.dst_maxburst = spi_imx->wml; in spi_imx_dma_configure()
1181 dev_err(spi_imx->dev, "TX dma configuration failed with %d\n", ret); in spi_imx_dma_configure()
1186 rx.src_addr = spi_imx->base_phys + MXC_CSPIRXDATA; in spi_imx_dma_configure()
1188 rx.src_maxburst = spi_imx->wml; in spi_imx_dma_configure()
1191 dev_err(spi_imx->dev, "RX dma configuration failed with %d\n", ret); in spi_imx_dma_configure()
1201 struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master); in spi_imx_setupxfer() local
1212 spi_imx->spi_bus_clk = spi->max_speed_hz; in spi_imx_setupxfer()
1214 spi_imx->spi_bus_clk = t->speed_hz; in spi_imx_setupxfer()
1216 spi_imx->bits_per_word = t->bits_per_word; in spi_imx_setupxfer()
1223 if (spi_imx->devtype_data->dynamic_burst && !spi_imx->slave_mode && in spi_imx_setupxfer()
1224 (spi_imx->bits_per_word == 8 || in spi_imx_setupxfer()
1225 spi_imx->bits_per_word == 16 || in spi_imx_setupxfer()
1226 spi_imx->bits_per_word == 32)) { in spi_imx_setupxfer()
1228 spi_imx->rx = spi_imx_buf_rx_swap; in spi_imx_setupxfer()
1229 spi_imx->tx = spi_imx_buf_tx_swap; in spi_imx_setupxfer()
1230 spi_imx->dynamic_burst = 1; in spi_imx_setupxfer()
1233 if (spi_imx->bits_per_word <= 8) { in spi_imx_setupxfer()
1234 spi_imx->rx = spi_imx_buf_rx_u8; in spi_imx_setupxfer()
1235 spi_imx->tx = spi_imx_buf_tx_u8; in spi_imx_setupxfer()
1236 } else if (spi_imx->bits_per_word <= 16) { in spi_imx_setupxfer()
1237 spi_imx->rx = spi_imx_buf_rx_u16; in spi_imx_setupxfer()
1238 spi_imx->tx = spi_imx_buf_tx_u16; in spi_imx_setupxfer()
1240 spi_imx->rx = spi_imx_buf_rx_u32; in spi_imx_setupxfer()
1241 spi_imx->tx = spi_imx_buf_tx_u32; in spi_imx_setupxfer()
1243 spi_imx->dynamic_burst = 0; in spi_imx_setupxfer()
1246 if (spi_imx_can_dma(spi_imx->bitbang.master, spi, t)) in spi_imx_setupxfer()
1247 spi_imx->usedma = true; in spi_imx_setupxfer()
1249 spi_imx->usedma = false; in spi_imx_setupxfer()
1251 if (is_imx53_ecspi(spi_imx) && spi_imx->slave_mode) { in spi_imx_setupxfer()
1252 spi_imx->rx = mx53_ecspi_rx_slave; in spi_imx_setupxfer()
1253 spi_imx->tx = mx53_ecspi_tx_slave; in spi_imx_setupxfer()
1254 spi_imx->slave_burst = t->len; in spi_imx_setupxfer()
1257 spi_imx->devtype_data->prepare_transfer(spi_imx, spi); in spi_imx_setupxfer()
1262 static void spi_imx_sdma_exit(struct spi_imx_data *spi_imx) in spi_imx_sdma_exit() argument
1264 struct spi_master *master = spi_imx->bitbang.master; in spi_imx_sdma_exit()
1277 static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx, in spi_imx_sdma_init() argument
1286 spi_imx->wml = spi_imx->devtype_data->fifo_size / 2; in spi_imx_sdma_init()
1306 init_completion(&spi_imx->dma_rx_completion); in spi_imx_sdma_init()
1307 init_completion(&spi_imx->dma_tx_completion); in spi_imx_sdma_init()
1310 spi_imx->bitbang.master->flags = SPI_MASTER_MUST_RX | in spi_imx_sdma_init()
1315 spi_imx_sdma_exit(spi_imx); in spi_imx_sdma_init()
1321 struct spi_imx_data *spi_imx = (struct spi_imx_data *)cookie; in spi_imx_dma_rx_callback() local
1323 complete(&spi_imx->dma_rx_completion); in spi_imx_dma_rx_callback()
1328 struct spi_imx_data *spi_imx = (struct spi_imx_data *)cookie; in spi_imx_dma_tx_callback() local
1330 complete(&spi_imx->dma_tx_completion); in spi_imx_dma_tx_callback()
1333 static int spi_imx_calculate_timeout(struct spi_imx_data *spi_imx, int size) in spi_imx_calculate_timeout() argument
1338 timeout = (8 + 4) * size / spi_imx->spi_bus_clk; in spi_imx_calculate_timeout()
1347 static int spi_imx_dma_transfer(struct spi_imx_data *spi_imx, in spi_imx_dma_transfer() argument
1353 struct spi_master *master = spi_imx->bitbang.master; in spi_imx_dma_transfer()
1361 for (i = spi_imx->devtype_data->fifo_size / 2; i > 0; i--) { in spi_imx_dma_transfer()
1369 spi_imx->wml = i; in spi_imx_dma_transfer()
1375 if (!spi_imx->devtype_data->setup_wml) { in spi_imx_dma_transfer()
1376 dev_err(spi_imx->dev, "No setup_wml()?\n"); in spi_imx_dma_transfer()
1380 spi_imx->devtype_data->setup_wml(spi_imx); in spi_imx_dma_transfer()
1395 desc_rx->callback_param = (void *)spi_imx; in spi_imx_dma_transfer()
1397 reinit_completion(&spi_imx->dma_rx_completion); in spi_imx_dma_transfer()
1410 desc_tx->callback_param = (void *)spi_imx; in spi_imx_dma_transfer()
1412 reinit_completion(&spi_imx->dma_tx_completion); in spi_imx_dma_transfer()
1415 transfer_timeout = spi_imx_calculate_timeout(spi_imx, transfer->len); in spi_imx_dma_transfer()
1418 timeout = wait_for_completion_timeout(&spi_imx->dma_tx_completion, in spi_imx_dma_transfer()
1421 dev_err(spi_imx->dev, "I/O Error in DMA TX\n"); in spi_imx_dma_transfer()
1427 timeout = wait_for_completion_timeout(&spi_imx->dma_rx_completion, in spi_imx_dma_transfer()
1431 spi_imx->devtype_data->reset(spi_imx); in spi_imx_dma_transfer()
1446 struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master); in spi_imx_pio_transfer() local
1450 spi_imx->tx_buf = transfer->tx_buf; in spi_imx_pio_transfer()
1451 spi_imx->rx_buf = transfer->rx_buf; in spi_imx_pio_transfer()
1452 spi_imx->count = transfer->len; in spi_imx_pio_transfer()
1453 spi_imx->txfifo = 0; in spi_imx_pio_transfer()
1454 spi_imx->remainder = 0; in spi_imx_pio_transfer()
1456 reinit_completion(&spi_imx->xfer_done); in spi_imx_pio_transfer()
1458 spi_imx_push(spi_imx); in spi_imx_pio_transfer()
1460 spi_imx->devtype_data->intctrl(spi_imx, MXC_INT_TE); in spi_imx_pio_transfer()
1462 transfer_timeout = spi_imx_calculate_timeout(spi_imx, transfer->len); in spi_imx_pio_transfer()
1464 timeout = wait_for_completion_timeout(&spi_imx->xfer_done, in spi_imx_pio_transfer()
1468 spi_imx->devtype_data->reset(spi_imx); in spi_imx_pio_transfer()
1478 struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master); in spi_imx_pio_transfer_slave() local
1481 if (is_imx53_ecspi(spi_imx) && in spi_imx_pio_transfer_slave()
1488 spi_imx->tx_buf = transfer->tx_buf; in spi_imx_pio_transfer_slave()
1489 spi_imx->rx_buf = transfer->rx_buf; in spi_imx_pio_transfer_slave()
1490 spi_imx->count = transfer->len; in spi_imx_pio_transfer_slave()
1491 spi_imx->txfifo = 0; in spi_imx_pio_transfer_slave()
1492 spi_imx->remainder = 0; in spi_imx_pio_transfer_slave()
1494 reinit_completion(&spi_imx->xfer_done); in spi_imx_pio_transfer_slave()
1495 spi_imx->slave_aborted = false; in spi_imx_pio_transfer_slave()
1497 spi_imx_push(spi_imx); in spi_imx_pio_transfer_slave()
1499 spi_imx->devtype_data->intctrl(spi_imx, MXC_INT_TE | MXC_INT_RDR); in spi_imx_pio_transfer_slave()
1501 if (wait_for_completion_interruptible(&spi_imx->xfer_done) || in spi_imx_pio_transfer_slave()
1502 spi_imx->slave_aborted) { in spi_imx_pio_transfer_slave()
1513 if (spi_imx->devtype_data->disable) in spi_imx_pio_transfer_slave()
1514 spi_imx->devtype_data->disable(spi_imx); in spi_imx_pio_transfer_slave()
1522 struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master); in spi_imx_transfer() local
1524 transfer->effective_speed_hz = spi_imx->spi_bus_clk; in spi_imx_transfer()
1527 while (spi_imx->devtype_data->rx_available(spi_imx)) in spi_imx_transfer()
1528 readl(spi_imx->base + MXC_CSPIRXDATA); in spi_imx_transfer()
1530 if (spi_imx->slave_mode) in spi_imx_transfer()
1533 if (spi_imx->usedma) in spi_imx_transfer()
1534 return spi_imx_dma_transfer(spi_imx, transfer); in spi_imx_transfer()
1554 struct spi_imx_data *spi_imx = spi_master_get_devdata(master); in spi_imx_prepare_message() local
1557 ret = pm_runtime_get_sync(spi_imx->dev); in spi_imx_prepare_message()
1559 pm_runtime_put_noidle(spi_imx->dev); in spi_imx_prepare_message()
1560 dev_err(spi_imx->dev, "failed to enable clock\n"); in spi_imx_prepare_message()
1564 ret = spi_imx->devtype_data->prepare_message(spi_imx, msg); in spi_imx_prepare_message()
1566 pm_runtime_mark_last_busy(spi_imx->dev); in spi_imx_prepare_message()
1567 pm_runtime_put_autosuspend(spi_imx->dev); in spi_imx_prepare_message()
1576 struct spi_imx_data *spi_imx = spi_master_get_devdata(master); in spi_imx_unprepare_message() local
1578 pm_runtime_mark_last_busy(spi_imx->dev); in spi_imx_unprepare_message()
1579 pm_runtime_put_autosuspend(spi_imx->dev); in spi_imx_unprepare_message()
1585 struct spi_imx_data *spi_imx = spi_master_get_devdata(master); in spi_imx_slave_abort() local
1587 spi_imx->slave_aborted = true; in spi_imx_slave_abort()
1588 complete(&spi_imx->xfer_done); in spi_imx_slave_abort()
1599 struct spi_imx_data *spi_imx; in spi_imx_probe() local
1630 spi_imx = spi_master_get_devdata(master); in spi_imx_probe()
1631 spi_imx->bitbang.master = master; in spi_imx_probe()
1632 spi_imx->dev = &pdev->dev; in spi_imx_probe()
1633 spi_imx->slave_mode = slave_mode; in spi_imx_probe()
1635 spi_imx->devtype_data = devtype_data; in spi_imx_probe()
1648 spi_imx->bitbang.setup_transfer = spi_imx_setupxfer; in spi_imx_probe()
1649 spi_imx->bitbang.txrx_bufs = spi_imx_transfer; in spi_imx_probe()
1650 spi_imx->bitbang.master->setup = spi_imx_setup; in spi_imx_probe()
1651 spi_imx->bitbang.master->cleanup = spi_imx_cleanup; in spi_imx_probe()
1652 spi_imx->bitbang.master->prepare_message = spi_imx_prepare_message; in spi_imx_probe()
1653 spi_imx->bitbang.master->unprepare_message = spi_imx_unprepare_message; in spi_imx_probe()
1654 spi_imx->bitbang.master->slave_abort = spi_imx_slave_abort; in spi_imx_probe()
1655 spi_imx->bitbang.master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \ in spi_imx_probe()
1657 if (is_imx35_cspi(spi_imx) || is_imx51_ecspi(spi_imx) || in spi_imx_probe()
1658 is_imx53_ecspi(spi_imx)) in spi_imx_probe()
1659 spi_imx->bitbang.master->mode_bits |= SPI_LOOP | SPI_READY; in spi_imx_probe()
1661 spi_imx->spi_drctl = spi_drctl; in spi_imx_probe()
1663 init_completion(&spi_imx->xfer_done); in spi_imx_probe()
1666 spi_imx->base = devm_ioremap_resource(&pdev->dev, res); in spi_imx_probe()
1667 if (IS_ERR(spi_imx->base)) { in spi_imx_probe()
1668 ret = PTR_ERR(spi_imx->base); in spi_imx_probe()
1671 spi_imx->base_phys = res->start; in spi_imx_probe()
1680 dev_name(&pdev->dev), spi_imx); in spi_imx_probe()
1686 spi_imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); in spi_imx_probe()
1687 if (IS_ERR(spi_imx->clk_ipg)) { in spi_imx_probe()
1688 ret = PTR_ERR(spi_imx->clk_ipg); in spi_imx_probe()
1692 spi_imx->clk_per = devm_clk_get(&pdev->dev, "per"); in spi_imx_probe()
1693 if (IS_ERR(spi_imx->clk_per)) { in spi_imx_probe()
1694 ret = PTR_ERR(spi_imx->clk_per); in spi_imx_probe()
1698 ret = clk_prepare_enable(spi_imx->clk_per); in spi_imx_probe()
1702 ret = clk_prepare_enable(spi_imx->clk_ipg); in spi_imx_probe()
1706 pm_runtime_set_autosuspend_delay(spi_imx->dev, MXC_RPM_TIMEOUT); in spi_imx_probe()
1707 pm_runtime_use_autosuspend(spi_imx->dev); in spi_imx_probe()
1708 pm_runtime_get_noresume(spi_imx->dev); in spi_imx_probe()
1709 pm_runtime_set_active(spi_imx->dev); in spi_imx_probe()
1710 pm_runtime_enable(spi_imx->dev); in spi_imx_probe()
1712 spi_imx->spi_clk = clk_get_rate(spi_imx->clk_per); in spi_imx_probe()
1717 if (spi_imx->devtype_data->has_dmamode) { in spi_imx_probe()
1718 ret = spi_imx_sdma_init(&pdev->dev, spi_imx, master); in spi_imx_probe()
1727 spi_imx->devtype_data->reset(spi_imx); in spi_imx_probe()
1729 spi_imx->devtype_data->intctrl(spi_imx, 0); in spi_imx_probe()
1732 ret = spi_bitbang_start(&spi_imx->bitbang); in spi_imx_probe()
1738 pm_runtime_mark_last_busy(spi_imx->dev); in spi_imx_probe()
1739 pm_runtime_put_autosuspend(spi_imx->dev); in spi_imx_probe()
1744 if (spi_imx->devtype_data->has_dmamode) in spi_imx_probe()
1745 spi_imx_sdma_exit(spi_imx); in spi_imx_probe()
1747 pm_runtime_dont_use_autosuspend(spi_imx->dev); in spi_imx_probe()
1749 pm_runtime_disable(spi_imx->dev); in spi_imx_probe()
1751 clk_disable_unprepare(spi_imx->clk_ipg); in spi_imx_probe()
1753 clk_disable_unprepare(spi_imx->clk_per); in spi_imx_probe()
1763 struct spi_imx_data *spi_imx = spi_master_get_devdata(master); in spi_imx_remove() local
1766 spi_bitbang_stop(&spi_imx->bitbang); in spi_imx_remove()
1768 ret = pm_runtime_get_sync(spi_imx->dev); in spi_imx_remove()
1770 pm_runtime_put_noidle(spi_imx->dev); in spi_imx_remove()
1771 dev_err(spi_imx->dev, "failed to enable clock\n"); in spi_imx_remove()
1775 writel(0, spi_imx->base + MXC_CSPICTRL); in spi_imx_remove()
1777 pm_runtime_dont_use_autosuspend(spi_imx->dev); in spi_imx_remove()
1778 pm_runtime_put_sync(spi_imx->dev); in spi_imx_remove()
1779 pm_runtime_disable(spi_imx->dev); in spi_imx_remove()
1781 spi_imx_sdma_exit(spi_imx); in spi_imx_remove()
1790 struct spi_imx_data *spi_imx; in spi_imx_runtime_resume() local
1793 spi_imx = spi_master_get_devdata(master); in spi_imx_runtime_resume()
1795 ret = clk_prepare_enable(spi_imx->clk_per); in spi_imx_runtime_resume()
1799 ret = clk_prepare_enable(spi_imx->clk_ipg); in spi_imx_runtime_resume()
1801 clk_disable_unprepare(spi_imx->clk_per); in spi_imx_runtime_resume()
1811 struct spi_imx_data *spi_imx; in spi_imx_runtime_suspend() local
1813 spi_imx = spi_master_get_devdata(master); in spi_imx_runtime_suspend()
1815 clk_disable_unprepare(spi_imx->clk_per); in spi_imx_runtime_suspend()
1816 clk_disable_unprepare(spi_imx->clk_ipg); in spi_imx_runtime_suspend()