1 /* Realtek USB SD/MMC Card Interface driver
3 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, see <http://www.gnu.org/licenses/>.
18 * Roger Tseng <rogerable@realtek.com>
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/delay.h>
24 #include <linux/platform_device.h>
25 #include <linux/usb.h>
26 #include <linux/mmc/host.h>
27 #include <linux/mmc/mmc.h>
28 #include <linux/mmc/sd.h>
29 #include <linux/mmc/sdio.h>
30 #include <linux/mmc/card.h>
31 #include <linux/scatterlist.h>
32 #include <linux/pm_runtime.h>
34 #include <linux/mfd/rtsx_usb.h>
35 #include <asm/unaligned.h>
37 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
38 #include <linux/leds.h>
39 #include <linux/workqueue.h>
40 #define RTSX_USB_USE_LEDS_CLASS
43 struct rtsx_usb_sdmmc {
44 struct platform_device *pdev;
47 struct mmc_request *mrq;
49 struct mutex host_mutex;
60 unsigned char power_mode;
62 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
63 struct led_classdev led;
65 struct work_struct led_work;
69 static inline struct device *sdmmc_dev(struct rtsx_usb_sdmmc *host)
71 return &(host->pdev->dev);
74 static inline void sd_clear_error(struct rtsx_usb_sdmmc *host)
76 struct rtsx_ucr *ucr = host->ucr;
77 rtsx_usb_ep0_write_register(ucr, CARD_STOP,
79 SD_STOP | SD_CLR_ERR);
81 rtsx_usb_clear_dma_err(ucr);
82 rtsx_usb_clear_fsm_err(ucr);
86 static void sd_print_debug_regs(struct rtsx_usb_sdmmc *host)
88 struct rtsx_ucr *ucr = host->ucr;
91 rtsx_usb_ep0_read_register(ucr, SD_STAT1, &val);
92 dev_dbg(sdmmc_dev(host), "SD_STAT1: 0x%x\n", val);
93 rtsx_usb_ep0_read_register(ucr, SD_STAT2, &val);
94 dev_dbg(sdmmc_dev(host), "SD_STAT2: 0x%x\n", val);
95 rtsx_usb_ep0_read_register(ucr, SD_BUS_STAT, &val);
96 dev_dbg(sdmmc_dev(host), "SD_BUS_STAT: 0x%x\n", val);
99 #define sd_print_debug_regs(host)
102 static int sd_read_data(struct rtsx_usb_sdmmc *host, struct mmc_command *cmd,
103 u16 byte_cnt, u8 *buf, int buf_len, int timeout)
105 struct rtsx_ucr *ucr = host->ucr;
112 rtsx_usb_init_cmd(ucr);
114 dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD%d\n", __func__
116 if (cmd->opcode == MMC_SEND_TUNING_BLOCK)
117 trans_mode = SD_TM_AUTO_TUNING;
119 trans_mode = SD_TM_NORMAL_READ;
121 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
122 SD_CMD0, 0xFF, (u8)(cmd->opcode) | 0x40);
123 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
124 SD_CMD1, 0xFF, (u8)(cmd->arg >> 24));
125 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
126 SD_CMD2, 0xFF, (u8)(cmd->arg >> 16));
127 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
128 SD_CMD3, 0xFF, (u8)(cmd->arg >> 8));
129 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
130 SD_CMD4, 0xFF, (u8)cmd->arg);
132 trans_mode = SD_TM_AUTO_READ_3;
135 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt);
136 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H,
137 0xFF, (u8)(byte_cnt >> 8));
138 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1);
139 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0);
141 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF,
142 SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
143 SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
144 if (trans_mode != SD_TM_AUTO_TUNING)
145 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
146 CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER);
148 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER,
149 0xFF, trans_mode | SD_TRANSFER_START);
150 rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER,
151 SD_TRANSFER_END, SD_TRANSFER_END);
154 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD1, 0, 0);
155 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD2, 0, 0);
156 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD3, 0, 0);
157 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD4, 0, 0);
160 err = rtsx_usb_send_cmd(ucr, MODE_CR, timeout);
162 dev_dbg(sdmmc_dev(host),
163 "rtsx_usb_send_cmd failed (err = %d)\n", err);
167 err = rtsx_usb_get_rsp(ucr, !cmd ? 1 : 5, timeout);
168 if (err || (ucr->rsp_buf[0] & SD_TRANSFER_ERR)) {
169 sd_print_debug_regs(host);
172 dev_dbg(sdmmc_dev(host),
173 "Transfer failed (SD_TRANSFER = %02x)\n",
177 dev_dbg(sdmmc_dev(host),
178 "rtsx_usb_get_rsp failed (err = %d)\n", err);
185 cmd->resp[0] = get_unaligned_be32(ucr->rsp_buf + 1);
186 dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n",
190 if (buf && buf_len) {
191 /* 2-byte aligned part */
192 err = rtsx_usb_read_ppbuf(ucr, buf, byte_cnt - (byte_cnt % 2));
194 dev_dbg(sdmmc_dev(host),
195 "rtsx_usb_read_ppbuf failed (err = %d)\n", err);
201 return rtsx_usb_read_register(ucr,
202 PPBUF_BASE2 + byte_cnt,
209 static int sd_write_data(struct rtsx_usb_sdmmc *host, struct mmc_command *cmd,
210 u16 byte_cnt, u8 *buf, int buf_len, int timeout)
212 struct rtsx_ucr *ucr = host->ucr;
219 if (buf && buf_len) {
220 err = rtsx_usb_write_ppbuf(ucr, buf, buf_len);
222 dev_dbg(sdmmc_dev(host),
223 "rtsx_usb_write_ppbuf failed (err = %d)\n",
229 trans_mode = (cmd != NULL) ? SD_TM_AUTO_WRITE_2 : SD_TM_AUTO_WRITE_3;
230 rtsx_usb_init_cmd(ucr);
233 dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD%d\n", __func__,
235 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
236 SD_CMD0, 0xFF, (u8)(cmd->opcode) | 0x40);
237 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
238 SD_CMD1, 0xFF, (u8)(cmd->arg >> 24));
239 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
240 SD_CMD2, 0xFF, (u8)(cmd->arg >> 16));
241 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
242 SD_CMD3, 0xFF, (u8)(cmd->arg >> 8));
243 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
244 SD_CMD4, 0xFF, (u8)cmd->arg);
247 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt);
248 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H,
249 0xFF, (u8)(byte_cnt >> 8));
250 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1);
251 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0);
253 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF,
254 SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
255 SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
256 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
257 CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER);
259 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
260 trans_mode | SD_TRANSFER_START);
261 rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER,
262 SD_TRANSFER_END, SD_TRANSFER_END);
265 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD1, 0, 0);
266 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD2, 0, 0);
267 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD3, 0, 0);
268 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD4, 0, 0);
271 err = rtsx_usb_send_cmd(ucr, MODE_CR, timeout);
273 dev_dbg(sdmmc_dev(host),
274 "rtsx_usb_send_cmd failed (err = %d)\n", err);
278 err = rtsx_usb_get_rsp(ucr, !cmd ? 1 : 5, timeout);
280 sd_print_debug_regs(host);
281 dev_dbg(sdmmc_dev(host),
282 "rtsx_usb_get_rsp failed (err = %d)\n", err);
287 cmd->resp[0] = get_unaligned_be32(ucr->rsp_buf + 1);
288 dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n",
295 static void sd_send_cmd_get_rsp(struct rtsx_usb_sdmmc *host,
296 struct mmc_command *cmd)
298 struct rtsx_ucr *ucr = host->ucr;
299 u8 cmd_idx = (u8)cmd->opcode;
309 dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
310 __func__, cmd_idx, arg);
319 switch (mmc_resp_type(cmd)) {
321 rsp_type = SD_RSP_TYPE_R0;
324 rsp_type = SD_RSP_TYPE_R1;
326 case MMC_RSP_R1 & ~MMC_RSP_CRC:
327 rsp_type = SD_RSP_TYPE_R1 | SD_NO_CHECK_CRC7;
330 rsp_type = SD_RSP_TYPE_R1b;
333 rsp_type = SD_RSP_TYPE_R2;
336 rsp_type = SD_RSP_TYPE_R3;
339 dev_dbg(sdmmc_dev(host), "cmd->flag is not valid\n");
344 if (rsp_type == SD_RSP_TYPE_R1b)
347 if (cmd->opcode == SD_SWITCH_VOLTAGE) {
348 err = rtsx_usb_write_register(ucr, SD_BUS_STAT,
349 SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP,
355 rtsx_usb_init_cmd(ucr);
357 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD0, 0xFF, 0x40 | cmd_idx);
358 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD1, 0xFF, (u8)(arg >> 24));
359 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD2, 0xFF, (u8)(arg >> 16));
360 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD3, 0xFF, (u8)(arg >> 8));
361 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD4, 0xFF, (u8)arg);
363 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, rsp_type);
364 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE,
365 0x01, PINGPONG_BUFFER);
366 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER,
367 0xFF, SD_TM_CMD_RSP | SD_TRANSFER_START);
368 rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER,
369 SD_TRANSFER_END | SD_STAT_IDLE,
370 SD_TRANSFER_END | SD_STAT_IDLE);
372 if (rsp_type == SD_RSP_TYPE_R2) {
373 /* Read data from ping-pong buffer */
374 for (i = PPBUF_BASE2; i < PPBUF_BASE2 + 16; i++)
375 rtsx_usb_add_cmd(ucr, READ_REG_CMD, (u16)i, 0, 0);
377 } else if (rsp_type != SD_RSP_TYPE_R0) {
378 /* Read data from SD_CMDx registers */
379 for (i = SD_CMD0; i <= SD_CMD4; i++)
380 rtsx_usb_add_cmd(ucr, READ_REG_CMD, (u16)i, 0, 0);
385 rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_STAT1, 0, 0);
387 err = rtsx_usb_send_cmd(ucr, MODE_CR, 100);
389 dev_dbg(sdmmc_dev(host),
390 "rtsx_usb_send_cmd error (err = %d)\n", err);
394 err = rtsx_usb_get_rsp(ucr, len, timeout);
395 if (err || (ucr->rsp_buf[0] & SD_TRANSFER_ERR)) {
396 sd_print_debug_regs(host);
397 sd_clear_error(host);
400 dev_dbg(sdmmc_dev(host),
401 "Transfer failed (SD_TRANSFER = %02x)\n",
405 dev_dbg(sdmmc_dev(host),
406 "rtsx_usb_get_rsp failed (err = %d)\n", err);
412 if (rsp_type == SD_RSP_TYPE_R0) {
417 /* Skip result of CHECK_REG_CMD */
418 ptr = ucr->rsp_buf + 1;
420 /* Check (Start,Transmission) bit of Response */
421 if ((ptr[0] & 0xC0) != 0) {
423 dev_dbg(sdmmc_dev(host), "Invalid response bit\n");
428 if (!(rsp_type & SD_NO_CHECK_CRC7)) {
429 if (ptr[stat_idx] & SD_CRC7_ERR) {
431 dev_dbg(sdmmc_dev(host), "CRC7 error\n");
436 if (rsp_type == SD_RSP_TYPE_R2) {
437 for (i = 0; i < 4; i++) {
438 cmd->resp[i] = get_unaligned_be32(ptr + 1 + i * 4);
439 dev_dbg(sdmmc_dev(host), "cmd->resp[%d] = 0x%08x\n",
443 cmd->resp[0] = get_unaligned_be32(ptr + 1);
444 dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n",
452 static int sd_rw_multi(struct rtsx_usb_sdmmc *host, struct mmc_request *mrq)
454 struct rtsx_ucr *ucr = host->ucr;
455 struct mmc_data *data = mrq->data;
456 int read = (data->flags & MMC_DATA_READ) ? 1 : 0;
460 size_t data_len = data->blksz * data->blocks;
464 dev_dbg(sdmmc_dev(host), "%s: read %zu bytes\n",
466 cfg2 = SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
467 SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0;
468 trans_mode = SD_TM_AUTO_READ_3;
470 dev_dbg(sdmmc_dev(host), "%s: write %zu bytes\n",
472 cfg2 = SD_NO_CALCULATE_CRC7 | SD_CHECK_CRC16 |
473 SD_NO_WAIT_BUSY_END | SD_NO_CHECK_CRC7 | SD_RSP_LEN_0;
474 trans_mode = SD_TM_AUTO_WRITE_3;
477 rtsx_usb_init_cmd(ucr);
479 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0x00);
480 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, 0x02);
481 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L,
482 0xFF, (u8)data->blocks);
483 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H,
484 0xFF, (u8)(data->blocks >> 8));
486 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE,
489 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC3,
490 0xFF, (u8)(data_len >> 24));
491 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC2,
492 0xFF, (u8)(data_len >> 16));
493 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC1,
494 0xFF, (u8)(data_len >> 8));
495 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC0,
499 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_CTL,
500 0x03 | DMA_PACK_SIZE_MASK,
501 DMA_DIR_FROM_CARD | DMA_EN | DMA_512);
504 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_CTL,
505 0x03 | DMA_PACK_SIZE_MASK,
506 DMA_DIR_TO_CARD | DMA_EN | DMA_512);
509 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, cfg2);
510 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
511 trans_mode | SD_TRANSFER_START);
512 rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER,
513 SD_TRANSFER_END, SD_TRANSFER_END);
515 err = rtsx_usb_send_cmd(ucr, flag, 100);
520 pipe = usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN);
522 pipe = usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT);
524 err = rtsx_usb_transfer_data(ucr, pipe, data->sg, data_len,
525 data->sg_len, NULL, 10000);
527 dev_dbg(sdmmc_dev(host), "rtsx_usb_transfer_data error %d\n"
529 sd_clear_error(host);
533 return rtsx_usb_get_rsp(ucr, 1, 2000);
536 static inline void sd_enable_initial_mode(struct rtsx_usb_sdmmc *host)
538 rtsx_usb_write_register(host->ucr, SD_CFG1,
539 SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_128);
542 static inline void sd_disable_initial_mode(struct rtsx_usb_sdmmc *host)
544 rtsx_usb_write_register(host->ucr, SD_CFG1,
545 SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_0);
548 static void sd_normal_rw(struct rtsx_usb_sdmmc *host,
549 struct mmc_request *mrq)
551 struct mmc_command *cmd = mrq->cmd;
552 struct mmc_data *data = mrq->data;
555 buf = kzalloc(data->blksz, GFP_NOIO);
557 cmd->error = -ENOMEM;
561 if (data->flags & MMC_DATA_READ) {
562 if (host->initial_mode)
563 sd_disable_initial_mode(host);
565 cmd->error = sd_read_data(host, cmd, (u16)data->blksz, buf,
568 if (host->initial_mode)
569 sd_enable_initial_mode(host);
571 sg_copy_from_buffer(data->sg, data->sg_len, buf, data->blksz);
573 sg_copy_to_buffer(data->sg, data->sg_len, buf, data->blksz);
575 cmd->error = sd_write_data(host, cmd, (u16)data->blksz, buf,
582 static int sd_change_phase(struct rtsx_usb_sdmmc *host, u8 sample_point, int tx)
584 struct rtsx_ucr *ucr = host->ucr;
587 dev_dbg(sdmmc_dev(host), "%s: %s sample_point = %d\n",
588 __func__, tx ? "TX" : "RX", sample_point);
590 rtsx_usb_init_cmd(ucr);
592 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CLK_DIV, CLK_CHANGE, CLK_CHANGE);
595 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL,
598 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK1_CTL,
601 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, PHASE_NOT_RESET, 0);
602 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL,
603 PHASE_NOT_RESET, PHASE_NOT_RESET);
604 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CLK_DIV, CLK_CHANGE, 0);
605 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, SD_ASYNC_FIFO_RST, 0);
607 err = rtsx_usb_send_cmd(ucr, MODE_C, 100);
614 static inline u32 get_phase_point(u32 phase_map, unsigned int idx)
617 return phase_map & (1 << idx);
620 static int get_phase_len(u32 phase_map, unsigned int idx)
624 for (i = 0; i < MAX_PHASE + 1; i++) {
625 if (get_phase_point(phase_map, idx + i) == 0)
628 return MAX_PHASE + 1;
631 static u8 sd_search_final_phase(struct rtsx_usb_sdmmc *host, u32 phase_map)
633 int start = 0, len = 0;
634 int start_final = 0, len_final = 0;
635 u8 final_phase = 0xFF;
637 if (phase_map == 0) {
638 dev_dbg(sdmmc_dev(host), "Phase: [map:%x]\n", phase_map);
642 while (start < MAX_PHASE + 1) {
643 len = get_phase_len(phase_map, start);
644 if (len_final < len) {
648 start += len ? len : 1;
651 final_phase = (start_final + len_final / 2) & MAX_PHASE;
652 dev_dbg(sdmmc_dev(host), "Phase: [map:%x] [maxlen:%d] [final:%d]\n",
653 phase_map, len_final, final_phase);
658 static void sd_wait_data_idle(struct rtsx_usb_sdmmc *host)
663 for (i = 0; i < 100; i++) {
664 err = rtsx_usb_ep0_read_register(host->ucr,
665 SD_DATA_STATE, &val);
666 if (val & SD_DATA_IDLE)
669 usleep_range(100, 1000);
673 static int sd_tuning_rx_cmd(struct rtsx_usb_sdmmc *host,
674 u8 opcode, u8 sample_point)
677 struct mmc_command cmd = {0};
679 err = sd_change_phase(host, sample_point, 0);
683 cmd.opcode = MMC_SEND_TUNING_BLOCK;
684 err = sd_read_data(host, &cmd, 0x40, NULL, 0, 100);
686 /* Wait till SD DATA IDLE */
687 sd_wait_data_idle(host);
688 sd_clear_error(host);
695 static void sd_tuning_phase(struct rtsx_usb_sdmmc *host,
696 u8 opcode, u16 *phase_map)
699 u16 raw_phase_map = 0;
701 for (i = MAX_PHASE; i >= 0; i--) {
702 err = sd_tuning_rx_cmd(host, opcode, (u8)i);
704 raw_phase_map |= 1 << i;
708 *phase_map = raw_phase_map;
711 static int sd_tuning_rx(struct rtsx_usb_sdmmc *host, u8 opcode)
714 u16 raw_phase_map[RX_TUNING_CNT] = {0}, phase_map;
717 /* setting fixed default TX phase */
718 err = sd_change_phase(host, 0x01, 1);
720 dev_dbg(sdmmc_dev(host), "TX phase setting failed\n");
724 /* tuning RX phase */
725 for (i = 0; i < RX_TUNING_CNT; i++) {
726 sd_tuning_phase(host, opcode, &(raw_phase_map[i]));
728 if (raw_phase_map[i] == 0)
733 for (i = 0; i < RX_TUNING_CNT; i++) {
734 dev_dbg(sdmmc_dev(host), "RX raw_phase_map[%d] = 0x%04x\n",
735 i, raw_phase_map[i]);
736 phase_map &= raw_phase_map[i];
738 dev_dbg(sdmmc_dev(host), "RX phase_map = 0x%04x\n", phase_map);
741 final_phase = sd_search_final_phase(host, phase_map);
742 if (final_phase == 0xFF)
745 err = sd_change_phase(host, final_phase, 0);
755 static int sdmmc_get_ro(struct mmc_host *mmc)
757 struct rtsx_usb_sdmmc *host = mmc_priv(mmc);
758 struct rtsx_ucr *ucr = host->ucr;
762 if (host->host_removal)
765 mutex_lock(&ucr->dev_mutex);
767 /* Check SD card detect */
768 err = rtsx_usb_get_card_status(ucr, &val);
770 mutex_unlock(&ucr->dev_mutex);
773 /* Treat failed detection as non-ro */
783 static int sdmmc_get_cd(struct mmc_host *mmc)
785 struct rtsx_usb_sdmmc *host = mmc_priv(mmc);
786 struct rtsx_ucr *ucr = host->ucr;
790 if (host->host_removal)
793 mutex_lock(&ucr->dev_mutex);
795 /* Check SD card detect */
796 err = rtsx_usb_get_card_status(ucr, &val);
798 mutex_unlock(&ucr->dev_mutex);
800 /* Treat failed detection as non-exist */
805 host->card_exist = true;
810 host->card_exist = false;
814 static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
816 struct rtsx_usb_sdmmc *host = mmc_priv(mmc);
817 struct rtsx_ucr *ucr = host->ucr;
818 struct mmc_command *cmd = mrq->cmd;
819 struct mmc_data *data = mrq->data;
820 unsigned int data_size = 0;
822 dev_dbg(sdmmc_dev(host), "%s\n", __func__);
824 if (host->host_removal) {
825 cmd->error = -ENOMEDIUM;
829 if ((!host->card_exist)) {
830 cmd->error = -ENOMEDIUM;
831 goto finish_detect_card;
835 * Reject SDIO CMDs to speed up card identification
838 if (cmd->opcode == SD_IO_SEND_OP_COND ||
839 cmd->opcode == SD_IO_RW_DIRECT ||
840 cmd->opcode == SD_IO_RW_EXTENDED) {
841 cmd->error = -EINVAL;
845 mutex_lock(&ucr->dev_mutex);
847 mutex_lock(&host->host_mutex);
849 mutex_unlock(&host->host_mutex);
852 data_size = data->blocks * data->blksz;
855 sd_send_cmd_get_rsp(host, cmd);
856 } else if ((!(data_size % 512) && cmd->opcode != MMC_SEND_EXT_CSD) ||
857 mmc_op_multi(cmd->opcode)) {
858 sd_send_cmd_get_rsp(host, cmd);
861 sd_rw_multi(host, mrq);
863 if (mmc_op_multi(cmd->opcode) && mrq->stop) {
864 sd_send_cmd_get_rsp(host, mrq->stop);
865 rtsx_usb_write_register(ucr, MC_FIFO_CTL,
866 FIFO_FLUSH, FIFO_FLUSH);
870 sd_normal_rw(host, mrq);
874 if (cmd->error || data->error)
875 data->bytes_xfered = 0;
877 data->bytes_xfered = data->blocks * data->blksz;
880 mutex_unlock(&ucr->dev_mutex);
885 * detect card when fail to update card existence state and
886 * speed up card removal when retry
889 dev_dbg(sdmmc_dev(host), "cmd->error = %d\n", cmd->error);
893 mutex_lock(&host->host_mutex);
895 mutex_unlock(&host->host_mutex);
897 mmc_request_done(mmc, mrq);
900 static int sd_set_bus_width(struct rtsx_usb_sdmmc *host,
901 unsigned char bus_width)
905 [MMC_BUS_WIDTH_1] = SD_BUS_WIDTH_1BIT,
906 [MMC_BUS_WIDTH_4] = SD_BUS_WIDTH_4BIT,
907 [MMC_BUS_WIDTH_8] = SD_BUS_WIDTH_8BIT,
910 if (bus_width <= MMC_BUS_WIDTH_8)
911 err = rtsx_usb_write_register(host->ucr, SD_CFG1,
912 0x03, width[bus_width]);
917 static int sd_pull_ctl_disable_lqfp48(struct rtsx_ucr *ucr)
919 rtsx_usb_init_cmd(ucr);
921 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x55);
922 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55);
923 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95);
924 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
925 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55);
926 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5);
928 return rtsx_usb_send_cmd(ucr, MODE_C, 100);
931 static int sd_pull_ctl_disable_qfn24(struct rtsx_ucr *ucr)
933 rtsx_usb_init_cmd(ucr);
935 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x65);
936 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55);
937 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95);
938 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
939 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x56);
940 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x59);
942 return rtsx_usb_send_cmd(ucr, MODE_C, 100);
945 static int sd_pull_ctl_enable_lqfp48(struct rtsx_ucr *ucr)
947 rtsx_usb_init_cmd(ucr);
949 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0xAA);
950 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0xAA);
951 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0xA9);
952 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
953 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55);
954 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5);
956 return rtsx_usb_send_cmd(ucr, MODE_C, 100);
959 static int sd_pull_ctl_enable_qfn24(struct rtsx_ucr *ucr)
961 rtsx_usb_init_cmd(ucr);
963 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0xA5);
964 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x9A);
965 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0xA5);
966 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x9A);
967 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x65);
968 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x5A);
970 return rtsx_usb_send_cmd(ucr, MODE_C, 100);
973 static int sd_power_on(struct rtsx_usb_sdmmc *host)
975 struct rtsx_ucr *ucr = host->ucr;
978 dev_dbg(sdmmc_dev(host), "%s\n", __func__);
979 rtsx_usb_init_cmd(ucr);
980 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL);
981 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SHARE_MODE,
982 CARD_SHARE_MASK, CARD_SHARE_SD);
983 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN,
984 SD_CLK_EN, SD_CLK_EN);
985 err = rtsx_usb_send_cmd(ucr, MODE_C, 100);
989 if (CHECK_PKG(ucr, LQFP48))
990 err = sd_pull_ctl_enable_lqfp48(ucr);
992 err = sd_pull_ctl_enable_qfn24(ucr);
996 err = rtsx_usb_write_register(ucr, CARD_PWR_CTL,
997 POWER_MASK, PARTIAL_POWER_ON);
1001 usleep_range(800, 1000);
1003 rtsx_usb_init_cmd(ucr);
1004 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL,
1005 POWER_MASK|LDO3318_PWR_MASK, POWER_ON|LDO_ON);
1006 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE,
1007 SD_OUTPUT_EN, SD_OUTPUT_EN);
1009 return rtsx_usb_send_cmd(ucr, MODE_C, 100);
1012 static int sd_power_off(struct rtsx_usb_sdmmc *host)
1014 struct rtsx_ucr *ucr = host->ucr;
1017 dev_dbg(sdmmc_dev(host), "%s\n", __func__);
1018 rtsx_usb_init_cmd(ucr);
1020 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN, SD_CLK_EN, 0);
1021 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE, SD_OUTPUT_EN, 0);
1022 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL,
1023 POWER_MASK, POWER_OFF);
1024 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL,
1025 POWER_MASK|LDO3318_PWR_MASK, POWER_OFF|LDO_SUSPEND);
1027 err = rtsx_usb_send_cmd(ucr, MODE_C, 100);
1031 if (CHECK_PKG(ucr, LQFP48))
1032 return sd_pull_ctl_disable_lqfp48(ucr);
1033 return sd_pull_ctl_disable_qfn24(ucr);
1036 static int sd_set_power_mode(struct rtsx_usb_sdmmc *host,
1037 unsigned char power_mode)
1041 if (power_mode != MMC_POWER_OFF)
1042 power_mode = MMC_POWER_ON;
1044 if (power_mode == host->power_mode)
1047 if (power_mode == MMC_POWER_OFF) {
1048 err = sd_power_off(host);
1049 pm_runtime_put(sdmmc_dev(host));
1051 pm_runtime_get_sync(sdmmc_dev(host));
1052 err = sd_power_on(host);
1056 host->power_mode = power_mode;
1061 static int sd_set_timing(struct rtsx_usb_sdmmc *host,
1062 unsigned char timing, bool *ddr_mode)
1064 struct rtsx_ucr *ucr = host->ucr;
1069 rtsx_usb_init_cmd(ucr);
1072 case MMC_TIMING_UHS_SDR104:
1073 case MMC_TIMING_UHS_SDR50:
1074 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1,
1075 0x0C | SD_ASYNC_FIFO_RST,
1076 SD_30_MODE | SD_ASYNC_FIFO_RST);
1077 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
1078 CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1);
1081 case MMC_TIMING_UHS_DDR50:
1084 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1,
1085 0x0C | SD_ASYNC_FIFO_RST,
1086 SD_DDR_MODE | SD_ASYNC_FIFO_RST);
1087 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
1088 CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1);
1089 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PUSH_POINT_CTL,
1090 DDR_VAR_TX_CMD_DAT, DDR_VAR_TX_CMD_DAT);
1091 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL,
1092 DDR_VAR_RX_DAT | DDR_VAR_RX_CMD,
1093 DDR_VAR_RX_DAT | DDR_VAR_RX_CMD);
1096 case MMC_TIMING_MMC_HS:
1097 case MMC_TIMING_SD_HS:
1098 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1,
1100 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
1101 CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1);
1102 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PUSH_POINT_CTL,
1103 SD20_TX_SEL_MASK, SD20_TX_14_AHEAD);
1104 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL,
1105 SD20_RX_SEL_MASK, SD20_RX_14_DELAY);
1109 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
1110 SD_CFG1, 0x0C, SD_20_MODE);
1111 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
1112 CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1);
1113 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD,
1114 SD_PUSH_POINT_CTL, 0xFF, 0);
1115 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL,
1116 SD20_RX_SEL_MASK, SD20_RX_POS_EDGE);
1120 err = rtsx_usb_send_cmd(ucr, MODE_C, 100);
1125 static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
1127 struct rtsx_usb_sdmmc *host = mmc_priv(mmc);
1128 struct rtsx_ucr *ucr = host->ucr;
1130 dev_dbg(sdmmc_dev(host), "%s\n", __func__);
1131 mutex_lock(&ucr->dev_mutex);
1133 if (rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD)) {
1134 mutex_unlock(&ucr->dev_mutex);
1138 sd_set_power_mode(host, ios->power_mode);
1139 sd_set_bus_width(host, ios->bus_width);
1140 sd_set_timing(host, ios->timing, &host->ddr_mode);
1142 host->vpclk = false;
1143 host->double_clk = true;
1145 switch (ios->timing) {
1146 case MMC_TIMING_UHS_SDR104:
1147 case MMC_TIMING_UHS_SDR50:
1148 host->ssc_depth = SSC_DEPTH_2M;
1150 host->double_clk = false;
1152 case MMC_TIMING_UHS_DDR50:
1153 case MMC_TIMING_UHS_SDR25:
1154 host->ssc_depth = SSC_DEPTH_1M;
1157 host->ssc_depth = SSC_DEPTH_512K;
1161 host->initial_mode = (ios->clock <= 1000000) ? true : false;
1162 host->clock = ios->clock;
1164 rtsx_usb_switch_clock(host->ucr, host->clock, host->ssc_depth,
1165 host->initial_mode, host->double_clk, host->vpclk);
1167 mutex_unlock(&ucr->dev_mutex);
1168 dev_dbg(sdmmc_dev(host), "%s end\n", __func__);
1171 static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
1173 struct rtsx_usb_sdmmc *host = mmc_priv(mmc);
1174 struct rtsx_ucr *ucr = host->ucr;
1177 dev_dbg(sdmmc_dev(host), "%s: signal_voltage = %d\n",
1178 __func__, ios->signal_voltage);
1180 if (host->host_removal)
1183 if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_120)
1186 mutex_lock(&ucr->dev_mutex);
1188 err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD);
1190 mutex_unlock(&ucr->dev_mutex);
1194 /* Let mmc core do the busy checking, simply stop the forced-toggle
1195 * clock(while issuing CMD11) and switch voltage.
1197 rtsx_usb_init_cmd(ucr);
1199 if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
1200 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PAD_CTL,
1201 SD_IO_USING_1V8, SD_IO_USING_3V3);
1202 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, LDO_POWER_CFG,
1203 TUNE_SD18_MASK, TUNE_SD18_3V3);
1205 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BUS_STAT,
1206 SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP,
1208 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PAD_CTL,
1209 SD_IO_USING_1V8, SD_IO_USING_1V8);
1210 rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, LDO_POWER_CFG,
1211 TUNE_SD18_MASK, TUNE_SD18_1V8);
1214 err = rtsx_usb_send_cmd(ucr, MODE_C, 100);
1215 mutex_unlock(&ucr->dev_mutex);
1220 static int sdmmc_card_busy(struct mmc_host *mmc)
1222 struct rtsx_usb_sdmmc *host = mmc_priv(mmc);
1223 struct rtsx_ucr *ucr = host->ucr;
1226 u8 mask = SD_DAT3_STATUS | SD_DAT2_STATUS | SD_DAT1_STATUS
1229 dev_dbg(sdmmc_dev(host), "%s\n", __func__);
1231 mutex_lock(&ucr->dev_mutex);
1233 err = rtsx_usb_write_register(ucr, SD_BUS_STAT,
1234 SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP,
1241 err = rtsx_usb_read_register(ucr, SD_BUS_STAT, &stat);
1245 err = rtsx_usb_write_register(ucr, SD_BUS_STAT,
1246 SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0);
1248 mutex_unlock(&ucr->dev_mutex);
1253 /* check if any pin between dat[0:3] is low */
1254 if ((stat & mask) != mask)
1260 static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
1262 struct rtsx_usb_sdmmc *host = mmc_priv(mmc);
1263 struct rtsx_ucr *ucr = host->ucr;
1266 if (host->host_removal)
1269 mutex_lock(&ucr->dev_mutex);
1271 if (!host->ddr_mode)
1272 err = sd_tuning_rx(host, MMC_SEND_TUNING_BLOCK);
1274 mutex_unlock(&ucr->dev_mutex);
1279 static const struct mmc_host_ops rtsx_usb_sdmmc_ops = {
1280 .request = sdmmc_request,
1281 .set_ios = sdmmc_set_ios,
1282 .get_ro = sdmmc_get_ro,
1283 .get_cd = sdmmc_get_cd,
1284 .start_signal_voltage_switch = sdmmc_switch_voltage,
1285 .card_busy = sdmmc_card_busy,
1286 .execute_tuning = sdmmc_execute_tuning,
1289 #ifdef RTSX_USB_USE_LEDS_CLASS
1290 static void rtsx_usb_led_control(struct led_classdev *led,
1291 enum led_brightness brightness)
1293 struct rtsx_usb_sdmmc *host = container_of(led,
1294 struct rtsx_usb_sdmmc, led);
1296 if (host->host_removal)
1299 host->led.brightness = brightness;
1300 schedule_work(&host->led_work);
1303 static void rtsx_usb_update_led(struct work_struct *work)
1305 struct rtsx_usb_sdmmc *host =
1306 container_of(work, struct rtsx_usb_sdmmc, led_work);
1307 struct rtsx_ucr *ucr = host->ucr;
1309 mutex_lock(&ucr->dev_mutex);
1311 if (host->led.brightness == LED_OFF)
1312 rtsx_usb_turn_off_led(ucr);
1314 rtsx_usb_turn_on_led(ucr);
1316 mutex_unlock(&ucr->dev_mutex);
1320 static void rtsx_usb_init_host(struct rtsx_usb_sdmmc *host)
1322 struct mmc_host *mmc = host->mmc;
1324 mmc->f_min = 250000;
1325 mmc->f_max = 208000000;
1326 mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
1327 mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED |
1328 MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST |
1329 MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 |
1332 mmc->max_current_330 = 400;
1333 mmc->max_current_180 = 800;
1334 mmc->ops = &rtsx_usb_sdmmc_ops;
1335 mmc->max_segs = 256;
1336 mmc->max_seg_size = 65536;
1337 mmc->max_blk_size = 512;
1338 mmc->max_blk_count = 65535;
1339 mmc->max_req_size = 524288;
1341 host->power_mode = MMC_POWER_OFF;
1344 static int rtsx_usb_sdmmc_drv_probe(struct platform_device *pdev)
1346 struct mmc_host *mmc;
1347 struct rtsx_usb_sdmmc *host;
1348 struct rtsx_ucr *ucr;
1349 #ifdef RTSX_USB_USE_LEDS_CLASS
1353 ucr = usb_get_intfdata(to_usb_interface(pdev->dev.parent));
1357 dev_dbg(&(pdev->dev), ": Realtek USB SD/MMC controller found\n");
1359 mmc = mmc_alloc_host(sizeof(*host), &pdev->dev);
1363 host = mmc_priv(mmc);
1367 platform_set_drvdata(pdev, host);
1369 mutex_init(&host->host_mutex);
1370 rtsx_usb_init_host(host);
1371 pm_runtime_enable(&pdev->dev);
1373 #ifdef RTSX_USB_USE_LEDS_CLASS
1374 snprintf(host->led_name, sizeof(host->led_name),
1375 "%s::", mmc_hostname(mmc));
1376 host->led.name = host->led_name;
1377 host->led.brightness = LED_OFF;
1378 host->led.default_trigger = mmc_hostname(mmc);
1379 host->led.brightness_set = rtsx_usb_led_control;
1381 err = led_classdev_register(mmc_dev(mmc), &host->led);
1383 dev_err(&(pdev->dev),
1384 "Failed to register LED device: %d\n", err);
1385 INIT_WORK(&host->led_work, rtsx_usb_update_led);
1393 static int rtsx_usb_sdmmc_drv_remove(struct platform_device *pdev)
1395 struct rtsx_usb_sdmmc *host = platform_get_drvdata(pdev);
1396 struct mmc_host *mmc;
1402 host->host_removal = true;
1404 mutex_lock(&host->host_mutex);
1406 dev_dbg(&(pdev->dev),
1407 "%s: Controller removed during transfer\n",
1409 host->mrq->cmd->error = -ENOMEDIUM;
1410 if (host->mrq->stop)
1411 host->mrq->stop->error = -ENOMEDIUM;
1412 mmc_request_done(mmc, host->mrq);
1414 mutex_unlock(&host->host_mutex);
1416 mmc_remove_host(mmc);
1418 #ifdef RTSX_USB_USE_LEDS_CLASS
1419 cancel_work_sync(&host->led_work);
1420 led_classdev_unregister(&host->led);
1424 pm_runtime_disable(&pdev->dev);
1425 platform_set_drvdata(pdev, NULL);
1427 dev_dbg(&(pdev->dev),
1428 ": Realtek USB SD/MMC module has been removed\n");
1433 static struct platform_device_id rtsx_usb_sdmmc_ids[] = {
1435 .name = "rtsx_usb_sdmmc",
1440 MODULE_DEVICE_TABLE(platform, rtsx_usb_sdmmc_ids);
1442 static struct platform_driver rtsx_usb_sdmmc_driver = {
1443 .probe = rtsx_usb_sdmmc_drv_probe,
1444 .remove = rtsx_usb_sdmmc_drv_remove,
1445 .id_table = rtsx_usb_sdmmc_ids,
1447 .owner = THIS_MODULE,
1448 .name = "rtsx_usb_sdmmc",
1451 module_platform_driver(rtsx_usb_sdmmc_driver);
1453 MODULE_LICENSE("GPL v2");
1454 MODULE_AUTHOR("Roger Tseng <rogerable@realtek.com>");
1455 MODULE_DESCRIPTION("Realtek USB SD/MMC Card Host Driver");