35  * For CMD_SINGLE_READ and CMD_INTERNAL_READ, WILC may insert one or
57 static int wilc_spi_reset(struct wilc *wilc);
161 static int wilc_parse_gpios(struct wilc *wilc)  in wilc_parse_gpios()  argument
163 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_parse_gpios()
164 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_parse_gpios()
186 static void wilc_wlan_power(struct wilc *wilc, bool on)  in wilc_wlan_power()  argument
188 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_wlan_power()
208 	struct wilc *wilc;  in wilc_bus_probe()  local
215 	ret = wilc_cfg80211_init(&wilc, &spi->dev, WILC_HIF_SPI, &wilc_hif_spi);  in wilc_bus_probe()
219 	spi_set_drvdata(spi, wilc);  in wilc_bus_probe()
220 	wilc->dev = &spi->dev;  in wilc_bus_probe()
221 	wilc->bus_data = spi_priv;  in wilc_bus_probe()
222 	wilc->dev_irq_num = spi->irq;  in wilc_bus_probe()
224 	ret = wilc_parse_gpios(wilc);  in wilc_bus_probe()
228 	wilc->rtc_clk = devm_clk_get_optional(&spi->dev, "rtc");  in wilc_bus_probe()
229 	if (IS_ERR(wilc->rtc_clk)) {  in wilc_bus_probe()
230 		ret = PTR_ERR(wilc->rtc_clk);  in wilc_bus_probe()
233 	clk_prepare_enable(wilc->rtc_clk);  in wilc_bus_probe()
238 	wilc_netdev_cleanup(wilc);  in wilc_bus_probe()
246 	struct wilc *wilc = spi_get_drvdata(spi);  in wilc_bus_remove()  local
247 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_bus_remove()
249 	clk_disable_unprepare(wilc->rtc_clk);  in wilc_bus_remove()
250 	wilc_netdev_cleanup(wilc);  in wilc_bus_remove()
279 static int wilc_spi_tx(struct wilc *wilc, u8 *b, u32 len)  in wilc_spi_tx()  argument
281 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_tx()
322 static int wilc_spi_rx(struct wilc *wilc, u8 *rb, u32 rlen)  in wilc_spi_rx()  argument
324 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_rx()
364 static int wilc_spi_tx_rx(struct wilc *wilc, u8 *wb, u8 *rb, u32 rlen)  in wilc_spi_tx_rx()  argument
366 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_tx_rx()
401 static int spi_data_write(struct wilc *wilc, u8 *b, u32 sz)  in spi_data_write()  argument
403 	struct spi_device *spi = to_spi_device(wilc->dev);  in spi_data_write()
404 	struct wilc_spi *spi_priv = wilc->bus_data;  in spi_data_write()
432 		if (wilc_spi_tx(wilc, &cmd, 1)) {  in spi_data_write()
442 		if (wilc_spi_tx(wilc, &b[ix], nbytes)) {  in spi_data_write()
456 			if (wilc_spi_tx(wilc, crc, 2)) {  in spi_data_write()
483 static int wilc_spi_single_read(struct wilc *wilc, u8 cmd, u32 adr, void *b,  in wilc_spi_single_read()  argument
486 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_single_read()
487 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_spi_single_read()
530 	if (wilc_spi_tx_rx(wilc, wb, rb, cmd_len + resp_len)) {  in wilc_spi_single_read()
578 static int wilc_spi_write_cmd(struct wilc *wilc, u8 cmd, u32 adr, u32 data,  in wilc_spi_write_cmd()  argument
581 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_write_cmd()
582 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_spi_write_cmd()
627 	if (wilc_spi_tx_rx(wilc, wb, rb, cmd_len + resp_len)) {  in wilc_spi_write_cmd()
653 static int wilc_spi_dma_rw(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz)  in wilc_spi_dma_rw()  argument
655 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_dma_rw()
656 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_spi_dma_rw()
704 	if (wilc_spi_tx_rx(wilc, wb, rb, cmd_len + resp_len)) {  in wilc_spi_dma_rw()
737 			if (wilc_spi_rx(wilc, &rsp, 1)) {  in wilc_spi_dma_rw()
749 		if (wilc_spi_rx(wilc, &b[ix], nbytes)) {  in wilc_spi_dma_rw()
759 			if (wilc_spi_rx(wilc, crc, 2)) {  in wilc_spi_dma_rw()
780 static int wilc_spi_special_cmd(struct wilc *wilc, u8 cmd)  in wilc_spi_special_cmd()  argument
782 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_special_cmd()
783 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_spi_special_cmd()
813 	if (wilc_spi_tx_rx(wilc, wb, rb, cmd_len + resp_len)) {  in wilc_spi_special_cmd()
835 static void wilc_spi_reset_cmd_sequence(struct wilc *wl, u8 attempt, u32 addr)  in wilc_spi_reset_cmd_sequence()
848 static int wilc_spi_read_reg(struct wilc *wilc, u32 addr, u32 *data)  in wilc_spi_read_reg()  argument
850 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_read_reg()
863 		result = wilc_spi_single_read(wilc, cmd, addr, data, clockless);  in wilc_spi_read_reg()
874 		wilc_spi_reset_cmd_sequence(wilc, i, addr);  in wilc_spi_read_reg()
880 static int wilc_spi_read(struct wilc *wilc, u32 addr, u8 *buf, u32 size)  in wilc_spi_read()  argument
882 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_read()
890 		result = wilc_spi_dma_rw(wilc, CMD_DMA_EXT_READ, addr,  in wilc_spi_read()
897 		wilc_spi_reset_cmd_sequence(wilc, i, addr);  in wilc_spi_read()
903 static int spi_internal_write(struct wilc *wilc, u32 adr, u32 dat)  in spi_internal_write()  argument
905 	struct spi_device *spi = to_spi_device(wilc->dev);  in spi_internal_write()
910 		result = wilc_spi_write_cmd(wilc, CMD_INTERNAL_WRITE, adr,  in spi_internal_write()
916 		wilc_spi_reset_cmd_sequence(wilc, i, adr);  in spi_internal_write()
922 static int spi_internal_read(struct wilc *wilc, u32 adr, u32 *data)  in spi_internal_read()  argument
924 	struct spi_device *spi = to_spi_device(wilc->dev);  in spi_internal_read()
925 	struct wilc_spi *spi_priv = wilc->bus_data;  in spi_internal_read()
930 		result = wilc_spi_single_read(wilc, CMD_INTERNAL_READ, adr,  in spi_internal_read()
939 		wilc_spi_reset_cmd_sequence(wilc, i, adr);  in spi_internal_read()
951 static int wilc_spi_write_reg(struct wilc *wilc, u32 addr, u32 data)  in wilc_spi_write_reg()  argument
953 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_write_reg()
966 		result = wilc_spi_write_cmd(wilc, cmd, addr, data, clockless);  in wilc_spi_write_reg()
975 		wilc_spi_reset_cmd_sequence(wilc, i, addr);  in wilc_spi_write_reg()
980 static int spi_data_rsp(struct wilc *wilc, u8 cmd)  in spi_data_rsp()  argument
982 	struct spi_device *spi = to_spi_device(wilc->dev);  in spi_data_rsp()
998 	result = wilc_spi_rx(wilc, rsp, sizeof(rsp));  in spi_data_rsp()
1026 static int wilc_spi_write(struct wilc *wilc, u32 addr, u8 *buf, u32 size)  in wilc_spi_write()  argument
1028 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_write()
1039 		result = wilc_spi_dma_rw(wilc, CMD_DMA_EXT_WRITE, addr,  in wilc_spi_write()
1044 			wilc_spi_reset_cmd_sequence(wilc, i, addr);  in wilc_spi_write()
1051 		result = spi_data_write(wilc, buf, size);  in wilc_spi_write()
1054 			wilc_spi_reset_cmd_sequence(wilc, i, addr);  in wilc_spi_write()
1061 		result = spi_data_rsp(wilc, CMD_DMA_EXT_WRITE);  in wilc_spi_write()
1064 			wilc_spi_reset_cmd_sequence(wilc, i, addr);  in wilc_spi_write()
1078 static int wilc_spi_reset(struct wilc *wilc)  in wilc_spi_reset()  argument
1080 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_reset()
1081 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_spi_reset()
1084 	result = wilc_spi_special_cmd(wilc, CMD_RESET);  in wilc_spi_reset()
1091 static bool wilc_spi_is_init(struct wilc *wilc)  in wilc_spi_is_init()  argument
1093 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_spi_is_init()
1098 static int wilc_spi_deinit(struct wilc *wilc)  in wilc_spi_deinit()  argument
1100 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_spi_deinit()
1103 	wilc_wlan_power(wilc, false);  in wilc_spi_deinit()
1107 static int wilc_spi_init(struct wilc *wilc, bool resume)  in wilc_spi_init()  argument
1109 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_init()
1110 	struct wilc_spi *spi_priv = wilc->bus_data;  in wilc_spi_init()
1117 		ret = wilc_spi_read_reg(wilc, WILC_CHIPID, &chipid);  in wilc_spi_init()
1124 	wilc_wlan_power(wilc, true);  in wilc_spi_init()
1139 		ret = spi_internal_read(wilc, WILC_SPI_PROTOCOL_OFFSET, &reg);  in wilc_spi_init()
1164 	ret = spi_internal_write(wilc, WILC_SPI_PROTOCOL_OFFSET, reg);  in wilc_spi_init()
1167 			"[wilc spi %d]: Failed internal write reg\n",  in wilc_spi_init()
1176 	spi_internal_read(wilc, WILC_SPI_PROTOCOL_OFFSET, &reg);  in wilc_spi_init()
1183 	ret = wilc_spi_read_reg(wilc, WILC_CHIPID, &chipid);  in wilc_spi_init()
1194 static int wilc_spi_read_size(struct wilc *wilc, u32 *size)  in wilc_spi_read_size()  argument
1198 	ret = spi_internal_read(wilc,  in wilc_spi_read_size()
1205 static int wilc_spi_read_int(struct wilc *wilc, u32 *int_status)  in wilc_spi_read_int()  argument
1207 	return spi_internal_read(wilc, WILC_SPI_INT_STATUS - WILC_SPI_REG_BASE,  in wilc_spi_read_int()
1211 static int wilc_spi_clear_int_ext(struct wilc *wilc, u32 val)  in wilc_spi_clear_int_ext()  argument
1218 		ret = spi_internal_write(wilc,  in wilc_spi_clear_int_ext()
1224 		ret = spi_internal_read(wilc,  in wilc_spi_clear_int_ext()
1235 static int wilc_spi_sync_ext(struct wilc *wilc, int nint)  in wilc_spi_sync_ext()  argument
1237 	struct spi_device *spi = to_spi_device(wilc->dev);  in wilc_spi_sync_ext()
1249 	ret = wilc_spi_read_reg(wilc, WILC_PIN_MUX_0, &reg);  in wilc_spi_sync_ext()
1256 	ret = wilc_spi_write_reg(wilc, WILC_PIN_MUX_0, reg);  in wilc_spi_sync_ext()
1266 	ret = wilc_spi_read_reg(wilc, WILC_INTR_ENABLE, &reg);  in wilc_spi_sync_ext()
1276 	ret = wilc_spi_write_reg(wilc, WILC_INTR_ENABLE, reg);  in wilc_spi_sync_ext()
1283 		ret = wilc_spi_read_reg(wilc, WILC_INTR2_ENABLE, &reg);  in wilc_spi_sync_ext()
1293 		ret = wilc_spi_write_reg(wilc, WILC_INTR2_ENABLE, reg);  in wilc_spi_sync_ext()