1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 21c6a0718SPierre Ossman /* 31c6a0718SPierre Ossman * tifm_sd.c - TI FlashMedia driver 41c6a0718SPierre Ossman * 51c6a0718SPierre Ossman * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> 61c6a0718SPierre Ossman * 71c6a0718SPierre Ossman * Special thanks to Brad Campbell for extensive testing of this driver. 81c6a0718SPierre Ossman */ 91c6a0718SPierre Ossman 101c6a0718SPierre Ossman 111c6a0718SPierre Ossman #include <linux/tifm.h> 121c6a0718SPierre Ossman #include <linux/mmc/host.h> 131c6a0718SPierre Ossman #include <linux/highmem.h> 141c6a0718SPierre Ossman #include <linux/scatterlist.h> 1588b47679SPaul Gortmaker #include <linux/module.h> 161c6a0718SPierre Ossman #include <asm/io.h> 171c6a0718SPierre Ossman 181c6a0718SPierre Ossman #define DRIVER_NAME "tifm_sd" 191c6a0718SPierre Ossman #define DRIVER_VERSION "0.8" 201c6a0718SPierre Ossman 2190ab5ee9SRusty Russell static bool no_dma = 0; 2290ab5ee9SRusty Russell static bool fixed_timeout = 0; 231c6a0718SPierre Ossman module_param(no_dma, bool, 0644); 241c6a0718SPierre Ossman module_param(fixed_timeout, bool, 0644); 251c6a0718SPierre Ossman 261c6a0718SPierre Ossman /* Constants here are mostly from OMAP5912 datasheet */ 271c6a0718SPierre Ossman #define TIFM_MMCSD_RESET 0x0002 281c6a0718SPierre Ossman #define TIFM_MMCSD_CLKMASK 0x03ff 291c6a0718SPierre Ossman #define TIFM_MMCSD_POWER 0x0800 301c6a0718SPierre Ossman #define TIFM_MMCSD_4BBUS 0x8000 311c6a0718SPierre Ossman #define TIFM_MMCSD_RXDE 0x8000 /* rx dma enable */ 321c6a0718SPierre Ossman #define TIFM_MMCSD_TXDE 0x0080 /* tx dma enable */ 331c6a0718SPierre Ossman #define TIFM_MMCSD_BUFINT 0x0c00 /* set bits: AE, AF */ 341c6a0718SPierre Ossman #define TIFM_MMCSD_DPE 0x0020 /* data timeout counted in kilocycles */ 351c6a0718SPierre Ossman #define TIFM_MMCSD_INAB 0x0080 /* abort / initialize command */ 361c6a0718SPierre Ossman #define TIFM_MMCSD_READ 0x8000 371c6a0718SPierre Ossman 381c6a0718SPierre Ossman #define TIFM_MMCSD_ERRMASK 0x01e0 /* set bits: CCRC, CTO, DCRC, DTO */ 391c6a0718SPierre Ossman #define TIFM_MMCSD_EOC 0x0001 /* end of command phase */ 401c6a0718SPierre Ossman #define TIFM_MMCSD_CD 0x0002 /* card detect */ 411c6a0718SPierre Ossman #define TIFM_MMCSD_CB 0x0004 /* card enter busy state */ 421c6a0718SPierre Ossman #define TIFM_MMCSD_BRS 0x0008 /* block received/sent */ 431c6a0718SPierre Ossman #define TIFM_MMCSD_EOFB 0x0010 /* card exit busy state */ 441c6a0718SPierre Ossman #define TIFM_MMCSD_DTO 0x0020 /* data time-out */ 451c6a0718SPierre Ossman #define TIFM_MMCSD_DCRC 0x0040 /* data crc error */ 461c6a0718SPierre Ossman #define TIFM_MMCSD_CTO 0x0080 /* command time-out */ 471c6a0718SPierre Ossman #define TIFM_MMCSD_CCRC 0x0100 /* command crc error */ 481c6a0718SPierre Ossman #define TIFM_MMCSD_AF 0x0400 /* fifo almost full */ 491c6a0718SPierre Ossman #define TIFM_MMCSD_AE 0x0800 /* fifo almost empty */ 501c6a0718SPierre Ossman #define TIFM_MMCSD_OCRB 0x1000 /* OCR busy */ 511c6a0718SPierre Ossman #define TIFM_MMCSD_CIRQ 0x2000 /* card irq (cmd40/sdio) */ 521c6a0718SPierre Ossman #define TIFM_MMCSD_CERR 0x4000 /* card status error */ 531c6a0718SPierre Ossman 541c6a0718SPierre Ossman #define TIFM_MMCSD_ODTO 0x0040 /* open drain / extended timeout */ 551c6a0718SPierre Ossman #define TIFM_MMCSD_CARD_RO 0x0200 /* card is read-only */ 561c6a0718SPierre Ossman 571c6a0718SPierre Ossman #define TIFM_MMCSD_FIFO_SIZE 0x0020 581c6a0718SPierre Ossman 591c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R0 0x0000 601c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R1 0x0100 611c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R2 0x0200 621c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R3 0x0300 631c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R4 0x0400 641c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R5 0x0500 651c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R6 0x0600 661c6a0718SPierre Ossman 671c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_BUSY 0x0800 681c6a0718SPierre Ossman 691c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_BC 0x0000 701c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_BCR 0x1000 711c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_AC 0x2000 721c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_ADTC 0x3000 731c6a0718SPierre Ossman 741c6a0718SPierre Ossman #define TIFM_MMCSD_MAX_BLOCK_SIZE 0x0800UL 751c6a0718SPierre Ossman 760b05c977SUlf Hansson #define TIFM_MMCSD_REQ_TIMEOUT_MS 1000 770b05c977SUlf Hansson 781c6a0718SPierre Ossman enum { 791c6a0718SPierre Ossman CMD_READY = 0x0001, 801c6a0718SPierre Ossman FIFO_READY = 0x0002, 811c6a0718SPierre Ossman BRS_READY = 0x0004, 821c6a0718SPierre Ossman SCMD_ACTIVE = 0x0008, 831c6a0718SPierre Ossman SCMD_READY = 0x0010, 841c6a0718SPierre Ossman CARD_BUSY = 0x0020, 851c6a0718SPierre Ossman DATA_CARRY = 0x0040 861c6a0718SPierre Ossman }; 871c6a0718SPierre Ossman 881c6a0718SPierre Ossman struct tifm_sd { 891c6a0718SPierre Ossman struct tifm_dev *dev; 901c6a0718SPierre Ossman 911c6a0718SPierre Ossman unsigned short eject:1, 921c6a0718SPierre Ossman open_drain:1, 931c6a0718SPierre Ossman no_dma:1; 941c6a0718SPierre Ossman unsigned short cmd_flags; 951c6a0718SPierre Ossman 961c6a0718SPierre Ossman unsigned int clk_freq; 971c6a0718SPierre Ossman unsigned int clk_div; 981c6a0718SPierre Ossman unsigned long timeout_jiffies; 991c6a0718SPierre Ossman 1001c6a0718SPierre Ossman struct tasklet_struct finish_tasklet; 1011c6a0718SPierre Ossman struct timer_list timer; 1021c6a0718SPierre Ossman struct mmc_request *req; 1031c6a0718SPierre Ossman 1041c6a0718SPierre Ossman int sg_len; 1051c6a0718SPierre Ossman int sg_pos; 1061c6a0718SPierre Ossman unsigned int block_pos; 1071c6a0718SPierre Ossman struct scatterlist bounce_buf; 1081c6a0718SPierre Ossman unsigned char bounce_buf_data[TIFM_MMCSD_MAX_BLOCK_SIZE]; 1091c6a0718SPierre Ossman }; 1101c6a0718SPierre Ossman 1111c6a0718SPierre Ossman /* for some reason, host won't respond correctly to readw/writew */ 1121c6a0718SPierre Ossman static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg, 1131c6a0718SPierre Ossman unsigned int off, unsigned int cnt) 1141c6a0718SPierre Ossman { 1151c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 1161c6a0718SPierre Ossman unsigned char *buf; 1171c6a0718SPierre Ossman unsigned int pos = 0, val; 1181c6a0718SPierre Ossman 119482fce99SCong Wang buf = kmap_atomic(pg) + off; 1201c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) { 1211c6a0718SPierre Ossman buf[pos++] = host->bounce_buf_data[0]; 1221c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY; 1231c6a0718SPierre Ossman } 1241c6a0718SPierre Ossman 1251c6a0718SPierre Ossman while (pos < cnt) { 1261c6a0718SPierre Ossman val = readl(sock->addr + SOCK_MMCSD_DATA); 1271c6a0718SPierre Ossman buf[pos++] = val & 0xff; 1281c6a0718SPierre Ossman if (pos == cnt) { 1291c6a0718SPierre Ossman host->bounce_buf_data[0] = (val >> 8) & 0xff; 1301c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY; 1311c6a0718SPierre Ossman break; 1321c6a0718SPierre Ossman } 1331c6a0718SPierre Ossman buf[pos++] = (val >> 8) & 0xff; 1341c6a0718SPierre Ossman } 135482fce99SCong Wang kunmap_atomic(buf - off); 1361c6a0718SPierre Ossman } 1371c6a0718SPierre Ossman 1381c6a0718SPierre Ossman static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg, 1391c6a0718SPierre Ossman unsigned int off, unsigned int cnt) 1401c6a0718SPierre Ossman { 1411c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 1421c6a0718SPierre Ossman unsigned char *buf; 1431c6a0718SPierre Ossman unsigned int pos = 0, val; 1441c6a0718SPierre Ossman 145482fce99SCong Wang buf = kmap_atomic(pg) + off; 1461c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) { 1471c6a0718SPierre Ossman val = host->bounce_buf_data[0] | ((buf[pos++] << 8) & 0xff00); 1481c6a0718SPierre Ossman writel(val, sock->addr + SOCK_MMCSD_DATA); 1491c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY; 1501c6a0718SPierre Ossman } 1511c6a0718SPierre Ossman 1521c6a0718SPierre Ossman while (pos < cnt) { 1531c6a0718SPierre Ossman val = buf[pos++]; 1541c6a0718SPierre Ossman if (pos == cnt) { 1551c6a0718SPierre Ossman host->bounce_buf_data[0] = val & 0xff; 1561c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY; 1571c6a0718SPierre Ossman break; 1581c6a0718SPierre Ossman } 1591c6a0718SPierre Ossman val |= (buf[pos++] << 8) & 0xff00; 1601c6a0718SPierre Ossman writel(val, sock->addr + SOCK_MMCSD_DATA); 1611c6a0718SPierre Ossman } 162482fce99SCong Wang kunmap_atomic(buf - off); 1631c6a0718SPierre Ossman } 1641c6a0718SPierre Ossman 1651c6a0718SPierre Ossman static void tifm_sd_transfer_data(struct tifm_sd *host) 1661c6a0718SPierre Ossman { 1671c6a0718SPierre Ossman struct mmc_data *r_data = host->req->cmd->data; 1681c6a0718SPierre Ossman struct scatterlist *sg = r_data->sg; 1691c6a0718SPierre Ossman unsigned int off, cnt, t_size = TIFM_MMCSD_FIFO_SIZE * 2; 1701c6a0718SPierre Ossman unsigned int p_off, p_cnt; 1711c6a0718SPierre Ossman struct page *pg; 1721c6a0718SPierre Ossman 1731c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 1741c6a0718SPierre Ossman return; 1751c6a0718SPierre Ossman while (t_size) { 1761c6a0718SPierre Ossman cnt = sg[host->sg_pos].length - host->block_pos; 1771c6a0718SPierre Ossman if (!cnt) { 1781c6a0718SPierre Ossman host->block_pos = 0; 1791c6a0718SPierre Ossman host->sg_pos++; 1801c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) { 1811c6a0718SPierre Ossman if ((r_data->flags & MMC_DATA_WRITE) 182ce636452SRoel Kluin && (host->cmd_flags & DATA_CARRY)) 1831c6a0718SPierre Ossman writel(host->bounce_buf_data[0], 1841c6a0718SPierre Ossman host->dev->addr 1851c6a0718SPierre Ossman + SOCK_MMCSD_DATA); 1861c6a0718SPierre Ossman 1871c6a0718SPierre Ossman return; 1881c6a0718SPierre Ossman } 1891c6a0718SPierre Ossman cnt = sg[host->sg_pos].length; 1901c6a0718SPierre Ossman } 1911c6a0718SPierre Ossman off = sg[host->sg_pos].offset + host->block_pos; 1921c6a0718SPierre Ossman 19345711f1aSJens Axboe pg = nth_page(sg_page(&sg[host->sg_pos]), off >> PAGE_SHIFT); 1941c6a0718SPierre Ossman p_off = offset_in_page(off); 1951c6a0718SPierre Ossman p_cnt = PAGE_SIZE - p_off; 1961c6a0718SPierre Ossman p_cnt = min(p_cnt, cnt); 1971c6a0718SPierre Ossman p_cnt = min(p_cnt, t_size); 1981c6a0718SPierre Ossman 1991c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_READ) 2001c6a0718SPierre Ossman tifm_sd_read_fifo(host, pg, p_off, p_cnt); 2011c6a0718SPierre Ossman else if (r_data->flags & MMC_DATA_WRITE) 2021c6a0718SPierre Ossman tifm_sd_write_fifo(host, pg, p_off, p_cnt); 2031c6a0718SPierre Ossman 2041c6a0718SPierre Ossman t_size -= p_cnt; 2051c6a0718SPierre Ossman host->block_pos += p_cnt; 2061c6a0718SPierre Ossman } 2071c6a0718SPierre Ossman } 2081c6a0718SPierre Ossman 2091c6a0718SPierre Ossman static void tifm_sd_copy_page(struct page *dst, unsigned int dst_off, 2101c6a0718SPierre Ossman struct page *src, unsigned int src_off, 2111c6a0718SPierre Ossman unsigned int count) 2121c6a0718SPierre Ossman { 213482fce99SCong Wang unsigned char *src_buf = kmap_atomic(src) + src_off; 214482fce99SCong Wang unsigned char *dst_buf = kmap_atomic(dst) + dst_off; 2151c6a0718SPierre Ossman 2161c6a0718SPierre Ossman memcpy(dst_buf, src_buf, count); 2171c6a0718SPierre Ossman 218482fce99SCong Wang kunmap_atomic(dst_buf - dst_off); 219482fce99SCong Wang kunmap_atomic(src_buf - src_off); 2201c6a0718SPierre Ossman } 2211c6a0718SPierre Ossman 2221c6a0718SPierre Ossman static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data) 2231c6a0718SPierre Ossman { 2241c6a0718SPierre Ossman struct scatterlist *sg = r_data->sg; 2251c6a0718SPierre Ossman unsigned int t_size = r_data->blksz; 2261c6a0718SPierre Ossman unsigned int off, cnt; 2271c6a0718SPierre Ossman unsigned int p_off, p_cnt; 2281c6a0718SPierre Ossman struct page *pg; 2291c6a0718SPierre Ossman 2301c6a0718SPierre Ossman dev_dbg(&host->dev->dev, "bouncing block\n"); 2311c6a0718SPierre Ossman while (t_size) { 2321c6a0718SPierre Ossman cnt = sg[host->sg_pos].length - host->block_pos; 2331c6a0718SPierre Ossman if (!cnt) { 2341c6a0718SPierre Ossman host->block_pos = 0; 2351c6a0718SPierre Ossman host->sg_pos++; 2361c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 2371c6a0718SPierre Ossman return; 2381c6a0718SPierre Ossman cnt = sg[host->sg_pos].length; 2391c6a0718SPierre Ossman } 2401c6a0718SPierre Ossman off = sg[host->sg_pos].offset + host->block_pos; 2411c6a0718SPierre Ossman 24245711f1aSJens Axboe pg = nth_page(sg_page(&sg[host->sg_pos]), off >> PAGE_SHIFT); 2431c6a0718SPierre Ossman p_off = offset_in_page(off); 2441c6a0718SPierre Ossman p_cnt = PAGE_SIZE - p_off; 2451c6a0718SPierre Ossman p_cnt = min(p_cnt, cnt); 2461c6a0718SPierre Ossman p_cnt = min(p_cnt, t_size); 2471c6a0718SPierre Ossman 2481c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE) 24945711f1aSJens Axboe tifm_sd_copy_page(sg_page(&host->bounce_buf), 2501c6a0718SPierre Ossman r_data->blksz - t_size, 2511c6a0718SPierre Ossman pg, p_off, p_cnt); 2521c6a0718SPierre Ossman else if (r_data->flags & MMC_DATA_READ) 25345711f1aSJens Axboe tifm_sd_copy_page(pg, p_off, sg_page(&host->bounce_buf), 2541c6a0718SPierre Ossman r_data->blksz - t_size, p_cnt); 2551c6a0718SPierre Ossman 2561c6a0718SPierre Ossman t_size -= p_cnt; 2571c6a0718SPierre Ossman host->block_pos += p_cnt; 2581c6a0718SPierre Ossman } 2591c6a0718SPierre Ossman } 2601c6a0718SPierre Ossman 261d97956f8SAdrian Bunk static int tifm_sd_set_dma_data(struct tifm_sd *host, struct mmc_data *r_data) 2621c6a0718SPierre Ossman { 2631c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 2641c6a0718SPierre Ossman unsigned int t_size = TIFM_DMA_TSIZE * r_data->blksz; 2651c6a0718SPierre Ossman unsigned int dma_len, dma_blk_cnt, dma_off; 2661c6a0718SPierre Ossman struct scatterlist *sg = NULL; 2671c6a0718SPierre Ossman 2681c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 2691c6a0718SPierre Ossman return 1; 2701c6a0718SPierre Ossman 2711c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) { 2721c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY; 2731c6a0718SPierre Ossman tifm_sd_bounce_block(host, r_data); 2741c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 2751c6a0718SPierre Ossman return 1; 2761c6a0718SPierre Ossman } 2771c6a0718SPierre Ossman 2781c6a0718SPierre Ossman dma_len = sg_dma_len(&r_data->sg[host->sg_pos]) - host->block_pos; 2791c6a0718SPierre Ossman if (!dma_len) { 2801c6a0718SPierre Ossman host->block_pos = 0; 2811c6a0718SPierre Ossman host->sg_pos++; 2821c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 2831c6a0718SPierre Ossman return 1; 2841c6a0718SPierre Ossman dma_len = sg_dma_len(&r_data->sg[host->sg_pos]); 2851c6a0718SPierre Ossman } 2861c6a0718SPierre Ossman 2871c6a0718SPierre Ossman if (dma_len < t_size) { 2881c6a0718SPierre Ossman dma_blk_cnt = dma_len / r_data->blksz; 2891c6a0718SPierre Ossman dma_off = host->block_pos; 2901c6a0718SPierre Ossman host->block_pos += dma_blk_cnt * r_data->blksz; 2911c6a0718SPierre Ossman } else { 2921c6a0718SPierre Ossman dma_blk_cnt = TIFM_DMA_TSIZE; 2931c6a0718SPierre Ossman dma_off = host->block_pos; 2941c6a0718SPierre Ossman host->block_pos += t_size; 2951c6a0718SPierre Ossman } 2961c6a0718SPierre Ossman 2971c6a0718SPierre Ossman if (dma_blk_cnt) 2981c6a0718SPierre Ossman sg = &r_data->sg[host->sg_pos]; 2991c6a0718SPierre Ossman else if (dma_len) { 300*36bbdc30SAdrian Hunter if (r_data->flags & MMC_DATA_WRITE) 3011c6a0718SPierre Ossman tifm_sd_bounce_block(host, r_data); 302*36bbdc30SAdrian Hunter else 3031c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY; 3041c6a0718SPierre Ossman 3051c6a0718SPierre Ossman sg = &host->bounce_buf; 3061c6a0718SPierre Ossman dma_off = 0; 3071c6a0718SPierre Ossman dma_blk_cnt = 1; 3081c6a0718SPierre Ossman } else 3091c6a0718SPierre Ossman return 1; 3101c6a0718SPierre Ossman 3111c6a0718SPierre Ossman dev_dbg(&sock->dev, "setting dma for %d blocks\n", dma_blk_cnt); 3121c6a0718SPierre Ossman writel(sg_dma_address(sg) + dma_off, sock->addr + SOCK_DMA_ADDRESS); 3131c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE) 3141c6a0718SPierre Ossman writel((dma_blk_cnt << 8) | TIFM_DMA_TX | TIFM_DMA_EN, 3151c6a0718SPierre Ossman sock->addr + SOCK_DMA_CONTROL); 3161c6a0718SPierre Ossman else 3171c6a0718SPierre Ossman writel((dma_blk_cnt << 8) | TIFM_DMA_EN, 3181c6a0718SPierre Ossman sock->addr + SOCK_DMA_CONTROL); 3191c6a0718SPierre Ossman 3201c6a0718SPierre Ossman return 0; 3211c6a0718SPierre Ossman } 3221c6a0718SPierre Ossman 3231c6a0718SPierre Ossman static unsigned int tifm_sd_op_flags(struct mmc_command *cmd) 3241c6a0718SPierre Ossman { 3251c6a0718SPierre Ossman unsigned int rc = 0; 3261c6a0718SPierre Ossman 3271c6a0718SPierre Ossman switch (mmc_resp_type(cmd)) { 3281c6a0718SPierre Ossman case MMC_RSP_NONE: 3291c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R0; 3301c6a0718SPierre Ossman break; 3311c6a0718SPierre Ossman case MMC_RSP_R1B: 332a5c83eb2SGustavo A. R. Silva rc |= TIFM_MMCSD_RSP_BUSY; 333df561f66SGustavo A. R. Silva fallthrough; 3341c6a0718SPierre Ossman case MMC_RSP_R1: 3351c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R1; 3361c6a0718SPierre Ossman break; 3371c6a0718SPierre Ossman case MMC_RSP_R2: 3381c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R2; 3391c6a0718SPierre Ossman break; 3401c6a0718SPierre Ossman case MMC_RSP_R3: 3411c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R3; 3421c6a0718SPierre Ossman break; 3431c6a0718SPierre Ossman default: 3441c6a0718SPierre Ossman BUG(); 3451c6a0718SPierre Ossman } 3461c6a0718SPierre Ossman 3471c6a0718SPierre Ossman switch (mmc_cmd_type(cmd)) { 3481c6a0718SPierre Ossman case MMC_CMD_BC: 3491c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_BC; 3501c6a0718SPierre Ossman break; 3511c6a0718SPierre Ossman case MMC_CMD_BCR: 3521c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_BCR; 3531c6a0718SPierre Ossman break; 3541c6a0718SPierre Ossman case MMC_CMD_AC: 3551c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_AC; 3561c6a0718SPierre Ossman break; 3571c6a0718SPierre Ossman case MMC_CMD_ADTC: 3581c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_ADTC; 3591c6a0718SPierre Ossman break; 3601c6a0718SPierre Ossman default: 3611c6a0718SPierre Ossman BUG(); 3621c6a0718SPierre Ossman } 3631c6a0718SPierre Ossman return rc; 3641c6a0718SPierre Ossman } 3651c6a0718SPierre Ossman 3661c6a0718SPierre Ossman static void tifm_sd_exec(struct tifm_sd *host, struct mmc_command *cmd) 3671c6a0718SPierre Ossman { 3681c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 3691c6a0718SPierre Ossman unsigned int cmd_mask = tifm_sd_op_flags(cmd); 3701c6a0718SPierre Ossman 3711c6a0718SPierre Ossman if (host->open_drain) 3721c6a0718SPierre Ossman cmd_mask |= TIFM_MMCSD_ODTO; 3731c6a0718SPierre Ossman 3741c6a0718SPierre Ossman if (cmd->data && (cmd->data->flags & MMC_DATA_READ)) 3751c6a0718SPierre Ossman cmd_mask |= TIFM_MMCSD_READ; 3761c6a0718SPierre Ossman 3771c6a0718SPierre Ossman dev_dbg(&sock->dev, "executing opcode 0x%x, arg: 0x%x, mask: 0x%x\n", 3781c6a0718SPierre Ossman cmd->opcode, cmd->arg, cmd_mask); 3791c6a0718SPierre Ossman 3801c6a0718SPierre Ossman writel((cmd->arg >> 16) & 0xffff, sock->addr + SOCK_MMCSD_ARG_HIGH); 3811c6a0718SPierre Ossman writel(cmd->arg & 0xffff, sock->addr + SOCK_MMCSD_ARG_LOW); 3821c6a0718SPierre Ossman writel(cmd->opcode | cmd_mask, sock->addr + SOCK_MMCSD_COMMAND); 3831c6a0718SPierre Ossman } 3841c6a0718SPierre Ossman 3851c6a0718SPierre Ossman static void tifm_sd_fetch_resp(struct mmc_command *cmd, struct tifm_dev *sock) 3861c6a0718SPierre Ossman { 3871c6a0718SPierre Ossman cmd->resp[0] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x1c) << 16) 3881c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x18); 3891c6a0718SPierre Ossman cmd->resp[1] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x14) << 16) 3901c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x10); 3911c6a0718SPierre Ossman cmd->resp[2] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x0c) << 16) 3921c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x08); 3931c6a0718SPierre Ossman cmd->resp[3] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x04) << 16) 3941c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x00); 3951c6a0718SPierre Ossman } 3961c6a0718SPierre Ossman 3971c6a0718SPierre Ossman static void tifm_sd_check_status(struct tifm_sd *host) 3981c6a0718SPierre Ossman { 3991c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 4001c6a0718SPierre Ossman struct mmc_command *cmd = host->req->cmd; 4011c6a0718SPierre Ossman 40217b0429dSPierre Ossman if (cmd->error) 4031c6a0718SPierre Ossman goto finish_request; 4041c6a0718SPierre Ossman 4051c6a0718SPierre Ossman if (!(host->cmd_flags & CMD_READY)) 4061c6a0718SPierre Ossman return; 4071c6a0718SPierre Ossman 4081c6a0718SPierre Ossman if (cmd->data) { 40917b0429dSPierre Ossman if (cmd->data->error) { 4101c6a0718SPierre Ossman if ((host->cmd_flags & SCMD_ACTIVE) 4111c6a0718SPierre Ossman && !(host->cmd_flags & SCMD_READY)) 4121c6a0718SPierre Ossman return; 4131c6a0718SPierre Ossman 4141c6a0718SPierre Ossman goto finish_request; 4151c6a0718SPierre Ossman } 4161c6a0718SPierre Ossman 4171c6a0718SPierre Ossman if (!(host->cmd_flags & BRS_READY)) 4181c6a0718SPierre Ossman return; 4191c6a0718SPierre Ossman 4201c6a0718SPierre Ossman if (!(host->no_dma || (host->cmd_flags & FIFO_READY))) 4211c6a0718SPierre Ossman return; 4221c6a0718SPierre Ossman 4231c6a0718SPierre Ossman if (cmd->data->flags & MMC_DATA_WRITE) { 4241c6a0718SPierre Ossman if (host->req->stop) { 4251c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_ACTIVE)) { 4261c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE; 4271c6a0718SPierre Ossman writel(TIFM_MMCSD_EOFB 4281c6a0718SPierre Ossman | readl(sock->addr 4291c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE), 4301c6a0718SPierre Ossman sock->addr 4311c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE); 4321c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop); 4331c6a0718SPierre Ossman return; 4341c6a0718SPierre Ossman } else { 4351c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_READY) 4361c6a0718SPierre Ossman || (host->cmd_flags & CARD_BUSY)) 4371c6a0718SPierre Ossman return; 4381c6a0718SPierre Ossman writel((~TIFM_MMCSD_EOFB) 4391c6a0718SPierre Ossman & readl(sock->addr 4401c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE), 4411c6a0718SPierre Ossman sock->addr 4421c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE); 4431c6a0718SPierre Ossman } 4441c6a0718SPierre Ossman } else { 4451c6a0718SPierre Ossman if (host->cmd_flags & CARD_BUSY) 4461c6a0718SPierre Ossman return; 4471c6a0718SPierre Ossman writel((~TIFM_MMCSD_EOFB) 4481c6a0718SPierre Ossman & readl(sock->addr 4491c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE), 4501c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 4511c6a0718SPierre Ossman } 4521c6a0718SPierre Ossman } else { 4531c6a0718SPierre Ossman if (host->req->stop) { 4541c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_ACTIVE)) { 4551c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE; 4561c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop); 4571c6a0718SPierre Ossman return; 4581c6a0718SPierre Ossman } else { 4591c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_READY)) 4601c6a0718SPierre Ossman return; 4611c6a0718SPierre Ossman } 4621c6a0718SPierre Ossman } 4631c6a0718SPierre Ossman } 4641c6a0718SPierre Ossman } 4651c6a0718SPierre Ossman finish_request: 4661c6a0718SPierre Ossman tasklet_schedule(&host->finish_tasklet); 4671c6a0718SPierre Ossman } 4681c6a0718SPierre Ossman 4691c6a0718SPierre Ossman /* Called from interrupt handler */ 4701c6a0718SPierre Ossman static void tifm_sd_data_event(struct tifm_dev *sock) 4711c6a0718SPierre Ossman { 4721c6a0718SPierre Ossman struct tifm_sd *host; 4731c6a0718SPierre Ossman unsigned int fifo_status = 0; 4741c6a0718SPierre Ossman struct mmc_data *r_data = NULL; 4751c6a0718SPierre Ossman 4761c6a0718SPierre Ossman spin_lock(&sock->lock); 4771c6a0718SPierre Ossman host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock)); 4781c6a0718SPierre Ossman fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS); 4791c6a0718SPierre Ossman dev_dbg(&sock->dev, "data event: fifo_status %x, flags %x\n", 4801c6a0718SPierre Ossman fifo_status, host->cmd_flags); 4811c6a0718SPierre Ossman 4821c6a0718SPierre Ossman if (host->req) { 4831c6a0718SPierre Ossman r_data = host->req->cmd->data; 4841c6a0718SPierre Ossman 4851c6a0718SPierre Ossman if (r_data && (fifo_status & TIFM_FIFO_READY)) { 4861c6a0718SPierre Ossman if (tifm_sd_set_dma_data(host, r_data)) { 4871c6a0718SPierre Ossman host->cmd_flags |= FIFO_READY; 4881c6a0718SPierre Ossman tifm_sd_check_status(host); 4891c6a0718SPierre Ossman } 4901c6a0718SPierre Ossman } 4911c6a0718SPierre Ossman } 4921c6a0718SPierre Ossman 4931c6a0718SPierre Ossman writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS); 4941c6a0718SPierre Ossman spin_unlock(&sock->lock); 4951c6a0718SPierre Ossman } 4961c6a0718SPierre Ossman 4971c6a0718SPierre Ossman /* Called from interrupt handler */ 4981c6a0718SPierre Ossman static void tifm_sd_card_event(struct tifm_dev *sock) 4991c6a0718SPierre Ossman { 5001c6a0718SPierre Ossman struct tifm_sd *host; 5011c6a0718SPierre Ossman unsigned int host_status = 0; 50217b0429dSPierre Ossman int cmd_error = 0; 5031c6a0718SPierre Ossman struct mmc_command *cmd = NULL; 5041c6a0718SPierre Ossman 5051c6a0718SPierre Ossman spin_lock(&sock->lock); 5061c6a0718SPierre Ossman host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock)); 5071c6a0718SPierre Ossman host_status = readl(sock->addr + SOCK_MMCSD_STATUS); 5081c6a0718SPierre Ossman dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n", 5091c6a0718SPierre Ossman host_status, host->cmd_flags); 5101c6a0718SPierre Ossman 5111c6a0718SPierre Ossman if (host->req) { 5121c6a0718SPierre Ossman cmd = host->req->cmd; 5131c6a0718SPierre Ossman 5141c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_ERRMASK) { 5151c6a0718SPierre Ossman writel(host_status & TIFM_MMCSD_ERRMASK, 5161c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_STATUS); 5171c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_CTO) 51817b0429dSPierre Ossman cmd_error = -ETIMEDOUT; 5191c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_CCRC) 52017b0429dSPierre Ossman cmd_error = -EILSEQ; 5211c6a0718SPierre Ossman 5221c6a0718SPierre Ossman if (cmd->data) { 5231c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_DTO) 52417b0429dSPierre Ossman cmd->data->error = -ETIMEDOUT; 5251c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_DCRC) 52617b0429dSPierre Ossman cmd->data->error = -EILSEQ; 5271c6a0718SPierre Ossman } 5281c6a0718SPierre Ossman 5291c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL, 5301c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); 5311c6a0718SPierre Ossman writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL); 5321c6a0718SPierre Ossman 5331c6a0718SPierre Ossman if (host->req->stop) { 5341c6a0718SPierre Ossman if (host->cmd_flags & SCMD_ACTIVE) { 5351c6a0718SPierre Ossman host->req->stop->error = cmd_error; 5361c6a0718SPierre Ossman host->cmd_flags |= SCMD_READY; 5371c6a0718SPierre Ossman } else { 5381c6a0718SPierre Ossman cmd->error = cmd_error; 5391c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE; 5401c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop); 5411c6a0718SPierre Ossman goto done; 5421c6a0718SPierre Ossman } 5431c6a0718SPierre Ossman } else 5441c6a0718SPierre Ossman cmd->error = cmd_error; 5451c6a0718SPierre Ossman } else { 5461c6a0718SPierre Ossman if (host_status & (TIFM_MMCSD_EOC | TIFM_MMCSD_CERR)) { 5471c6a0718SPierre Ossman if (!(host->cmd_flags & CMD_READY)) { 5481c6a0718SPierre Ossman host->cmd_flags |= CMD_READY; 5491c6a0718SPierre Ossman tifm_sd_fetch_resp(cmd, sock); 5501c6a0718SPierre Ossman } else if (host->cmd_flags & SCMD_ACTIVE) { 5511c6a0718SPierre Ossman host->cmd_flags |= SCMD_READY; 5521c6a0718SPierre Ossman tifm_sd_fetch_resp(host->req->stop, 5531c6a0718SPierre Ossman sock); 5541c6a0718SPierre Ossman } 5551c6a0718SPierre Ossman } 5561c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_BRS) 5571c6a0718SPierre Ossman host->cmd_flags |= BRS_READY; 5581c6a0718SPierre Ossman } 5591c6a0718SPierre Ossman 5601c6a0718SPierre Ossman if (host->no_dma && cmd->data) { 5611c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_AE) 5621c6a0718SPierre Ossman writel(host_status & TIFM_MMCSD_AE, 5631c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_STATUS); 5641c6a0718SPierre Ossman 5651c6a0718SPierre Ossman if (host_status & (TIFM_MMCSD_AE | TIFM_MMCSD_AF 5661c6a0718SPierre Ossman | TIFM_MMCSD_BRS)) { 5671c6a0718SPierre Ossman tifm_sd_transfer_data(host); 5681c6a0718SPierre Ossman host_status &= ~TIFM_MMCSD_AE; 5691c6a0718SPierre Ossman } 5701c6a0718SPierre Ossman } 5711c6a0718SPierre Ossman 5721c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_EOFB) 5731c6a0718SPierre Ossman host->cmd_flags &= ~CARD_BUSY; 5741c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_CB) 5751c6a0718SPierre Ossman host->cmd_flags |= CARD_BUSY; 5761c6a0718SPierre Ossman 5771c6a0718SPierre Ossman tifm_sd_check_status(host); 5781c6a0718SPierre Ossman } 5791c6a0718SPierre Ossman done: 5801c6a0718SPierre Ossman writel(host_status, sock->addr + SOCK_MMCSD_STATUS); 5811c6a0718SPierre Ossman spin_unlock(&sock->lock); 5821c6a0718SPierre Ossman } 5831c6a0718SPierre Ossman 5841c6a0718SPierre Ossman static void tifm_sd_set_data_timeout(struct tifm_sd *host, 5851c6a0718SPierre Ossman struct mmc_data *data) 5861c6a0718SPierre Ossman { 5871c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 5881c6a0718SPierre Ossman unsigned int data_timeout = data->timeout_clks; 5891c6a0718SPierre Ossman 5901c6a0718SPierre Ossman if (fixed_timeout) 5911c6a0718SPierre Ossman return; 5921c6a0718SPierre Ossman 5931c6a0718SPierre Ossman data_timeout += data->timeout_ns / 5941c6a0718SPierre Ossman ((1000000000UL / host->clk_freq) * host->clk_div); 5951c6a0718SPierre Ossman 5961c6a0718SPierre Ossman if (data_timeout < 0xffff) { 5971c6a0718SPierre Ossman writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO); 5981c6a0718SPierre Ossman writel((~TIFM_MMCSD_DPE) 5991c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG), 6001c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG); 6011c6a0718SPierre Ossman } else { 6021c6a0718SPierre Ossman data_timeout = (data_timeout >> 10) + 1; 6031c6a0718SPierre Ossman if (data_timeout > 0xffff) 6041c6a0718SPierre Ossman data_timeout = 0; /* set to unlimited */ 6051c6a0718SPierre Ossman writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO); 6061c6a0718SPierre Ossman writel(TIFM_MMCSD_DPE 6071c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG), 6081c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG); 6091c6a0718SPierre Ossman } 6101c6a0718SPierre Ossman } 6111c6a0718SPierre Ossman 6121c6a0718SPierre Ossman static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq) 6131c6a0718SPierre Ossman { 6141c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 6151c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 6161c6a0718SPierre Ossman unsigned long flags; 6171c6a0718SPierre Ossman struct mmc_data *r_data = mrq->cmd->data; 6181c6a0718SPierre Ossman 6191c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 6201c6a0718SPierre Ossman if (host->eject) { 621255d01afSPierre Ossman mrq->cmd->error = -ENOMEDIUM; 6221c6a0718SPierre Ossman goto err_out; 6231c6a0718SPierre Ossman } 6241c6a0718SPierre Ossman 6251c6a0718SPierre Ossman if (host->req) { 626a3c76eb9SGirish K S pr_err("%s : unfinished request detected\n", 627d1b26863SKay Sievers dev_name(&sock->dev)); 628255d01afSPierre Ossman mrq->cmd->error = -ETIMEDOUT; 629255d01afSPierre Ossman goto err_out; 630255d01afSPierre Ossman } 631255d01afSPierre Ossman 6321c6a0718SPierre Ossman host->cmd_flags = 0; 6331c6a0718SPierre Ossman host->block_pos = 0; 6341c6a0718SPierre Ossman host->sg_pos = 0; 6351c6a0718SPierre Ossman 636b37a0506SAlex Dubov if (mrq->data && !is_power_of_2(mrq->data->blksz)) 637b37a0506SAlex Dubov host->no_dma = 1; 638b37a0506SAlex Dubov else 639b37a0506SAlex Dubov host->no_dma = no_dma ? 1 : 0; 640b37a0506SAlex Dubov 6411c6a0718SPierre Ossman if (r_data) { 6421c6a0718SPierre Ossman tifm_sd_set_data_timeout(host, r_data); 6431c6a0718SPierre Ossman 6441c6a0718SPierre Ossman if ((r_data->flags & MMC_DATA_WRITE) && !mrq->stop) 6451c6a0718SPierre Ossman writel(TIFM_MMCSD_EOFB 6461c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_INT_ENABLE), 6471c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 6481c6a0718SPierre Ossman 6491c6a0718SPierre Ossman if (host->no_dma) { 6501c6a0718SPierre Ossman writel(TIFM_MMCSD_BUFINT 6511c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_INT_ENABLE), 6521c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 6531c6a0718SPierre Ossman writel(((TIFM_MMCSD_FIFO_SIZE - 1) << 8) 6541c6a0718SPierre Ossman | (TIFM_MMCSD_FIFO_SIZE - 1), 6551c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG); 6561c6a0718SPierre Ossman 6571c6a0718SPierre Ossman host->sg_len = r_data->sg_len; 6581c6a0718SPierre Ossman } else { 6591c6a0718SPierre Ossman sg_init_one(&host->bounce_buf, host->bounce_buf_data, 6601c6a0718SPierre Ossman r_data->blksz); 6611c6a0718SPierre Ossman 6621c6a0718SPierre Ossman if(1 != tifm_map_sg(sock, &host->bounce_buf, 1, 6631c6a0718SPierre Ossman r_data->flags & MMC_DATA_WRITE 664b048457cSChristophe JAILLET ? DMA_TO_DEVICE 665b048457cSChristophe JAILLET : DMA_FROM_DEVICE)) { 666a3c76eb9SGirish K S pr_err("%s : scatterlist map failed\n", 667d1b26863SKay Sievers dev_name(&sock->dev)); 668b37a0506SAlex Dubov mrq->cmd->error = -ENOMEM; 6691c6a0718SPierre Ossman goto err_out; 6701c6a0718SPierre Ossman } 6711c6a0718SPierre Ossman host->sg_len = tifm_map_sg(sock, r_data->sg, 6721c6a0718SPierre Ossman r_data->sg_len, 6731c6a0718SPierre Ossman r_data->flags 6741c6a0718SPierre Ossman & MMC_DATA_WRITE 675b048457cSChristophe JAILLET ? DMA_TO_DEVICE 676b048457cSChristophe JAILLET : DMA_FROM_DEVICE); 6771c6a0718SPierre Ossman if (host->sg_len < 1) { 678a3c76eb9SGirish K S pr_err("%s : scatterlist map failed\n", 679d1b26863SKay Sievers dev_name(&sock->dev)); 6801c6a0718SPierre Ossman tifm_unmap_sg(sock, &host->bounce_buf, 1, 6811c6a0718SPierre Ossman r_data->flags & MMC_DATA_WRITE 682b048457cSChristophe JAILLET ? DMA_TO_DEVICE 683b048457cSChristophe JAILLET : DMA_FROM_DEVICE); 684b37a0506SAlex Dubov mrq->cmd->error = -ENOMEM; 6851c6a0718SPierre Ossman goto err_out; 6861c6a0718SPierre Ossman } 6871c6a0718SPierre Ossman 6881c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL, 6891c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); 6901c6a0718SPierre Ossman writel(ilog2(r_data->blksz) - 2, 6911c6a0718SPierre Ossman sock->addr + SOCK_FIFO_PAGE_SIZE); 6921c6a0718SPierre Ossman writel(TIFM_FIFO_ENABLE, 6931c6a0718SPierre Ossman sock->addr + SOCK_FIFO_CONTROL); 6941c6a0718SPierre Ossman writel(TIFM_FIFO_INTMASK, 6951c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); 6961c6a0718SPierre Ossman 6971c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE) 6981c6a0718SPierre Ossman writel(TIFM_MMCSD_TXDE, 6991c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG); 7001c6a0718SPierre Ossman else 7011c6a0718SPierre Ossman writel(TIFM_MMCSD_RXDE, 7021c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG); 7031c6a0718SPierre Ossman 7041c6a0718SPierre Ossman tifm_sd_set_dma_data(host, r_data); 7051c6a0718SPierre Ossman } 7061c6a0718SPierre Ossman 7071c6a0718SPierre Ossman writel(r_data->blocks - 1, 7081c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_NUM_BLOCKS); 7091c6a0718SPierre Ossman writel(r_data->blksz - 1, 7101c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BLOCK_LEN); 7111c6a0718SPierre Ossman } 7121c6a0718SPierre Ossman 7131c6a0718SPierre Ossman host->req = mrq; 7141c6a0718SPierre Ossman mod_timer(&host->timer, jiffies + host->timeout_jiffies); 7151c6a0718SPierre Ossman writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL), 7161c6a0718SPierre Ossman sock->addr + SOCK_CONTROL); 7171c6a0718SPierre Ossman tifm_sd_exec(host, mrq->cmd); 7181c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 7191c6a0718SPierre Ossman return; 7201c6a0718SPierre Ossman 7211c6a0718SPierre Ossman err_out: 722255d01afSPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 7231c6a0718SPierre Ossman mmc_request_done(mmc, mrq); 7241c6a0718SPierre Ossman } 7251c6a0718SPierre Ossman 726c36dd042SEmil Renner Berthing static void tifm_sd_end_cmd(struct tasklet_struct *t) 7271c6a0718SPierre Ossman { 728c36dd042SEmil Renner Berthing struct tifm_sd *host = from_tasklet(host, t, finish_tasklet); 7291c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 7301c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock); 7311c6a0718SPierre Ossman struct mmc_request *mrq; 7321c6a0718SPierre Ossman struct mmc_data *r_data = NULL; 7331c6a0718SPierre Ossman unsigned long flags; 7341c6a0718SPierre Ossman 7351c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 7361c6a0718SPierre Ossman 7371c6a0718SPierre Ossman del_timer(&host->timer); 7381c6a0718SPierre Ossman mrq = host->req; 7391c6a0718SPierre Ossman host->req = NULL; 7401c6a0718SPierre Ossman 7411c6a0718SPierre Ossman if (!mrq) { 742a3c76eb9SGirish K S pr_err(" %s : no request to complete?\n", 743d1b26863SKay Sievers dev_name(&sock->dev)); 7441c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 7451c6a0718SPierre Ossman return; 7461c6a0718SPierre Ossman } 7471c6a0718SPierre Ossman 7481c6a0718SPierre Ossman r_data = mrq->cmd->data; 7491c6a0718SPierre Ossman if (r_data) { 7501c6a0718SPierre Ossman if (host->no_dma) { 7511c6a0718SPierre Ossman writel((~TIFM_MMCSD_BUFINT) 7521c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_INT_ENABLE), 7531c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 7541c6a0718SPierre Ossman } else { 7551c6a0718SPierre Ossman tifm_unmap_sg(sock, &host->bounce_buf, 1, 7561c6a0718SPierre Ossman (r_data->flags & MMC_DATA_WRITE) 757b048457cSChristophe JAILLET ? DMA_TO_DEVICE : DMA_FROM_DEVICE); 7581c6a0718SPierre Ossman tifm_unmap_sg(sock, r_data->sg, r_data->sg_len, 7591c6a0718SPierre Ossman (r_data->flags & MMC_DATA_WRITE) 760b048457cSChristophe JAILLET ? DMA_TO_DEVICE : DMA_FROM_DEVICE); 7611c6a0718SPierre Ossman } 7621c6a0718SPierre Ossman 7631c6a0718SPierre Ossman r_data->bytes_xfered = r_data->blocks 7641c6a0718SPierre Ossman - readl(sock->addr + SOCK_MMCSD_NUM_BLOCKS) - 1; 7651c6a0718SPierre Ossman r_data->bytes_xfered *= r_data->blksz; 7661c6a0718SPierre Ossman r_data->bytes_xfered += r_data->blksz 7671c6a0718SPierre Ossman - readl(sock->addr + SOCK_MMCSD_BLOCK_LEN) + 1; 7681c6a0718SPierre Ossman } 7691c6a0718SPierre Ossman 7701c6a0718SPierre Ossman writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL), 7711c6a0718SPierre Ossman sock->addr + SOCK_CONTROL); 7721c6a0718SPierre Ossman 7731c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 7741c6a0718SPierre Ossman mmc_request_done(mmc, mrq); 7751c6a0718SPierre Ossman } 7761c6a0718SPierre Ossman 7772ee4f620SKees Cook static void tifm_sd_abort(struct timer_list *t) 7781c6a0718SPierre Ossman { 7792ee4f620SKees Cook struct tifm_sd *host = from_timer(host, t, timer); 7801c6a0718SPierre Ossman 781a3c76eb9SGirish K S pr_err("%s : card failed to respond for a long period of time " 7821c6a0718SPierre Ossman "(%x, %x)\n", 783d1b26863SKay Sievers dev_name(&host->dev->dev), host->req->cmd->opcode, host->cmd_flags); 7841c6a0718SPierre Ossman 7851c6a0718SPierre Ossman tifm_eject(host->dev); 7861c6a0718SPierre Ossman } 7871c6a0718SPierre Ossman 7881c6a0718SPierre Ossman static void tifm_sd_ios(struct mmc_host *mmc, struct mmc_ios *ios) 7891c6a0718SPierre Ossman { 7901c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 7911c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 7921c6a0718SPierre Ossman unsigned int clk_div1, clk_div2; 7931c6a0718SPierre Ossman unsigned long flags; 7941c6a0718SPierre Ossman 7951c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 7961c6a0718SPierre Ossman 7971c6a0718SPierre Ossman dev_dbg(&sock->dev, "ios: clock = %u, vdd = %x, bus_mode = %x, " 7981c6a0718SPierre Ossman "chip_select = %x, power_mode = %x, bus_width = %x\n", 7991c6a0718SPierre Ossman ios->clock, ios->vdd, ios->bus_mode, ios->chip_select, 8001c6a0718SPierre Ossman ios->power_mode, ios->bus_width); 8011c6a0718SPierre Ossman 8021c6a0718SPierre Ossman if (ios->bus_width == MMC_BUS_WIDTH_4) { 8031c6a0718SPierre Ossman writel(TIFM_MMCSD_4BBUS | readl(sock->addr + SOCK_MMCSD_CONFIG), 8041c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 8051c6a0718SPierre Ossman } else { 8061c6a0718SPierre Ossman writel((~TIFM_MMCSD_4BBUS) 8071c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_CONFIG), 8081c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 8091c6a0718SPierre Ossman } 8101c6a0718SPierre Ossman 8111c6a0718SPierre Ossman if (ios->clock) { 8121c6a0718SPierre Ossman clk_div1 = 20000000 / ios->clock; 8131c6a0718SPierre Ossman if (!clk_div1) 8141c6a0718SPierre Ossman clk_div1 = 1; 8151c6a0718SPierre Ossman 8161c6a0718SPierre Ossman clk_div2 = 24000000 / ios->clock; 8171c6a0718SPierre Ossman if (!clk_div2) 8181c6a0718SPierre Ossman clk_div2 = 1; 8191c6a0718SPierre Ossman 8201c6a0718SPierre Ossman if ((20000000 / clk_div1) > ios->clock) 8211c6a0718SPierre Ossman clk_div1++; 8221c6a0718SPierre Ossman if ((24000000 / clk_div2) > ios->clock) 8231c6a0718SPierre Ossman clk_div2++; 8241c6a0718SPierre Ossman if ((20000000 / clk_div1) > (24000000 / clk_div2)) { 8251c6a0718SPierre Ossman host->clk_freq = 20000000; 8261c6a0718SPierre Ossman host->clk_div = clk_div1; 8271c6a0718SPierre Ossman writel((~TIFM_CTRL_FAST_CLK) 8281c6a0718SPierre Ossman & readl(sock->addr + SOCK_CONTROL), 8291c6a0718SPierre Ossman sock->addr + SOCK_CONTROL); 8301c6a0718SPierre Ossman } else { 8311c6a0718SPierre Ossman host->clk_freq = 24000000; 8321c6a0718SPierre Ossman host->clk_div = clk_div2; 8331c6a0718SPierre Ossman writel(TIFM_CTRL_FAST_CLK 8341c6a0718SPierre Ossman | readl(sock->addr + SOCK_CONTROL), 8351c6a0718SPierre Ossman sock->addr + SOCK_CONTROL); 8361c6a0718SPierre Ossman } 8371c6a0718SPierre Ossman } else { 8381c6a0718SPierre Ossman host->clk_div = 0; 8391c6a0718SPierre Ossman } 8401c6a0718SPierre Ossman host->clk_div &= TIFM_MMCSD_CLKMASK; 8411c6a0718SPierre Ossman writel(host->clk_div 8421c6a0718SPierre Ossman | ((~TIFM_MMCSD_CLKMASK) 8431c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_CONFIG)), 8441c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 8451c6a0718SPierre Ossman 8461c6a0718SPierre Ossman host->open_drain = (ios->bus_mode == MMC_BUSMODE_OPENDRAIN); 8471c6a0718SPierre Ossman 8481c6a0718SPierre Ossman /* chip_select : maybe later */ 8491c6a0718SPierre Ossman //vdd 8501c6a0718SPierre Ossman //power is set before probe / after remove 8511c6a0718SPierre Ossman 8521c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 8531c6a0718SPierre Ossman } 8541c6a0718SPierre Ossman 8551c6a0718SPierre Ossman static int tifm_sd_ro(struct mmc_host *mmc) 8561c6a0718SPierre Ossman { 8571c6a0718SPierre Ossman int rc = 0; 8581c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 8591c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 8601c6a0718SPierre Ossman unsigned long flags; 8611c6a0718SPierre Ossman 8621c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 8631c6a0718SPierre Ossman if (TIFM_MMCSD_CARD_RO & readl(sock->addr + SOCK_PRESENT_STATE)) 8641c6a0718SPierre Ossman rc = 1; 8651c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 8661c6a0718SPierre Ossman return rc; 8671c6a0718SPierre Ossman } 8681c6a0718SPierre Ossman 8691c6a0718SPierre Ossman static const struct mmc_host_ops tifm_sd_ops = { 8701c6a0718SPierre Ossman .request = tifm_sd_request, 8711c6a0718SPierre Ossman .set_ios = tifm_sd_ios, 8721c6a0718SPierre Ossman .get_ro = tifm_sd_ro 8731c6a0718SPierre Ossman }; 8741c6a0718SPierre Ossman 8751c6a0718SPierre Ossman static int tifm_sd_initialize_host(struct tifm_sd *host) 8761c6a0718SPierre Ossman { 8771c6a0718SPierre Ossman int rc; 8781c6a0718SPierre Ossman unsigned int host_status = 0; 8791c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 8801c6a0718SPierre Ossman 8811c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE); 8821c6a0718SPierre Ossman host->clk_div = 61; 8831c6a0718SPierre Ossman host->clk_freq = 20000000; 8841c6a0718SPierre Ossman writel(TIFM_MMCSD_RESET, sock->addr + SOCK_MMCSD_SYSTEM_CONTROL); 8851c6a0718SPierre Ossman writel(host->clk_div | TIFM_MMCSD_POWER, 8861c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 8871c6a0718SPierre Ossman 8881c6a0718SPierre Ossman /* wait up to 0.51 sec for reset */ 8891c6a0718SPierre Ossman for (rc = 32; rc <= 256; rc <<= 1) { 8901c6a0718SPierre Ossman if (1 & readl(sock->addr + SOCK_MMCSD_SYSTEM_STATUS)) { 8911c6a0718SPierre Ossman rc = 0; 8921c6a0718SPierre Ossman break; 8931c6a0718SPierre Ossman } 8941c6a0718SPierre Ossman msleep(rc); 8951c6a0718SPierre Ossman } 8961c6a0718SPierre Ossman 8971c6a0718SPierre Ossman if (rc) { 898a3c76eb9SGirish K S pr_err("%s : controller failed to reset\n", 899d1b26863SKay Sievers dev_name(&sock->dev)); 9001c6a0718SPierre Ossman return -ENODEV; 9011c6a0718SPierre Ossman } 9021c6a0718SPierre Ossman 9031c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_NUM_BLOCKS); 9041c6a0718SPierre Ossman writel(host->clk_div | TIFM_MMCSD_POWER, 9051c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 9061c6a0718SPierre Ossman writel(TIFM_MMCSD_RXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG); 9071c6a0718SPierre Ossman 9081c6a0718SPierre Ossman // command timeout fixed to 64 clocks for now 9091c6a0718SPierre Ossman writel(64, sock->addr + SOCK_MMCSD_COMMAND_TO); 9101c6a0718SPierre Ossman writel(TIFM_MMCSD_INAB, sock->addr + SOCK_MMCSD_COMMAND); 9111c6a0718SPierre Ossman 9121c6a0718SPierre Ossman for (rc = 16; rc <= 64; rc <<= 1) { 9131c6a0718SPierre Ossman host_status = readl(sock->addr + SOCK_MMCSD_STATUS); 9141c6a0718SPierre Ossman writel(host_status, sock->addr + SOCK_MMCSD_STATUS); 9151c6a0718SPierre Ossman if (!(host_status & TIFM_MMCSD_ERRMASK) 9161c6a0718SPierre Ossman && (host_status & TIFM_MMCSD_EOC)) { 9171c6a0718SPierre Ossman rc = 0; 9181c6a0718SPierre Ossman break; 9191c6a0718SPierre Ossman } 9201c6a0718SPierre Ossman msleep(rc); 9211c6a0718SPierre Ossman } 9221c6a0718SPierre Ossman 9231c6a0718SPierre Ossman if (rc) { 924a3c76eb9SGirish K S pr_err("%s : card not ready - probe failed on initialization\n", 925d1b26863SKay Sievers dev_name(&sock->dev)); 9261c6a0718SPierre Ossman return -ENODEV; 9271c6a0718SPierre Ossman } 9281c6a0718SPierre Ossman 9291c6a0718SPierre Ossman writel(TIFM_MMCSD_CERR | TIFM_MMCSD_BRS | TIFM_MMCSD_EOC 9301c6a0718SPierre Ossman | TIFM_MMCSD_ERRMASK, 9311c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 9321c6a0718SPierre Ossman 9331c6a0718SPierre Ossman return 0; 9341c6a0718SPierre Ossman } 9351c6a0718SPierre Ossman 9361c6a0718SPierre Ossman static int tifm_sd_probe(struct tifm_dev *sock) 9371c6a0718SPierre Ossman { 9381c6a0718SPierre Ossman struct mmc_host *mmc; 9391c6a0718SPierre Ossman struct tifm_sd *host; 9401c6a0718SPierre Ossman int rc = -EIO; 9411c6a0718SPierre Ossman 9421c6a0718SPierre Ossman if (!(TIFM_SOCK_STATE_OCCUPIED 9431c6a0718SPierre Ossman & readl(sock->addr + SOCK_PRESENT_STATE))) { 9446606110dSJoe Perches pr_warn("%s : card gone, unexpectedly\n", 945d1b26863SKay Sievers dev_name(&sock->dev)); 9461c6a0718SPierre Ossman return rc; 9471c6a0718SPierre Ossman } 9481c6a0718SPierre Ossman 9491c6a0718SPierre Ossman mmc = mmc_alloc_host(sizeof(struct tifm_sd), &sock->dev); 9501c6a0718SPierre Ossman if (!mmc) 9511c6a0718SPierre Ossman return -ENOMEM; 9521c6a0718SPierre Ossman 9531c6a0718SPierre Ossman host = mmc_priv(mmc); 9541c6a0718SPierre Ossman tifm_set_drvdata(sock, mmc); 9551c6a0718SPierre Ossman host->dev = sock; 9560b05c977SUlf Hansson host->timeout_jiffies = msecs_to_jiffies(TIFM_MMCSD_REQ_TIMEOUT_MS); 9570b05c977SUlf Hansson /* 9580b05c977SUlf Hansson * We use a fixed request timeout of 1s, hence inform the core about it. 9590b05c977SUlf Hansson * A future improvement should instead respect the cmd->busy_timeout. 9600b05c977SUlf Hansson */ 9610b05c977SUlf Hansson mmc->max_busy_timeout = TIFM_MMCSD_REQ_TIMEOUT_MS; 9621c6a0718SPierre Ossman 963c36dd042SEmil Renner Berthing tasklet_setup(&host->finish_tasklet, tifm_sd_end_cmd); 9642ee4f620SKees Cook timer_setup(&host->timer, tifm_sd_abort, 0); 9651c6a0718SPierre Ossman 9661c6a0718SPierre Ossman mmc->ops = &tifm_sd_ops; 9671c6a0718SPierre Ossman mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; 96823af6039SPierre Ossman mmc->caps = MMC_CAP_4_BIT_DATA; 9691c6a0718SPierre Ossman mmc->f_min = 20000000 / 60; 9701c6a0718SPierre Ossman mmc->f_max = 24000000; 9711c6a0718SPierre Ossman 9721c6a0718SPierre Ossman mmc->max_blk_count = 2048; 973a36274e0SMartin K. Petersen mmc->max_segs = mmc->max_blk_count; 9741c6a0718SPierre Ossman mmc->max_blk_size = min(TIFM_MMCSD_MAX_BLOCK_SIZE, PAGE_SIZE); 9751c6a0718SPierre Ossman mmc->max_seg_size = mmc->max_blk_count * mmc->max_blk_size; 9761c6a0718SPierre Ossman mmc->max_req_size = mmc->max_seg_size; 9771c6a0718SPierre Ossman 9781c6a0718SPierre Ossman sock->card_event = tifm_sd_card_event; 9791c6a0718SPierre Ossman sock->data_event = tifm_sd_data_event; 9801c6a0718SPierre Ossman rc = tifm_sd_initialize_host(host); 9811c6a0718SPierre Ossman 9821c6a0718SPierre Ossman if (!rc) 9831c6a0718SPierre Ossman rc = mmc_add_host(mmc); 9841c6a0718SPierre Ossman if (!rc) 9851c6a0718SPierre Ossman return 0; 9861c6a0718SPierre Ossman 9871c6a0718SPierre Ossman mmc_free_host(mmc); 9881c6a0718SPierre Ossman return rc; 9891c6a0718SPierre Ossman } 9901c6a0718SPierre Ossman 9911c6a0718SPierre Ossman static void tifm_sd_remove(struct tifm_dev *sock) 9921c6a0718SPierre Ossman { 9931c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock); 9941c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 9951c6a0718SPierre Ossman unsigned long flags; 9961c6a0718SPierre Ossman 9971c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 9981c6a0718SPierre Ossman host->eject = 1; 9991c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE); 10001c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 10011c6a0718SPierre Ossman 10021c6a0718SPierre Ossman tasklet_kill(&host->finish_tasklet); 10031c6a0718SPierre Ossman 10041c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 10051c6a0718SPierre Ossman if (host->req) { 10061c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL, 10071c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); 10081c6a0718SPierre Ossman writel(0, sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); 100917b0429dSPierre Ossman host->req->cmd->error = -ENOMEDIUM; 10101c6a0718SPierre Ossman if (host->req->stop) 101117b0429dSPierre Ossman host->req->stop->error = -ENOMEDIUM; 10121c6a0718SPierre Ossman tasklet_schedule(&host->finish_tasklet); 10131c6a0718SPierre Ossman } 10141c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 10151c6a0718SPierre Ossman mmc_remove_host(mmc); 10161c6a0718SPierre Ossman dev_dbg(&sock->dev, "after remove\n"); 10171c6a0718SPierre Ossman 10181c6a0718SPierre Ossman mmc_free_host(mmc); 10191c6a0718SPierre Ossman } 10201c6a0718SPierre Ossman 10211c6a0718SPierre Ossman #ifdef CONFIG_PM 10221c6a0718SPierre Ossman 10231c6a0718SPierre Ossman static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state) 10241c6a0718SPierre Ossman { 1025ccbd4830SUlf Hansson return 0; 10261c6a0718SPierre Ossman } 10271c6a0718SPierre Ossman 10281c6a0718SPierre Ossman static int tifm_sd_resume(struct tifm_dev *sock) 10291c6a0718SPierre Ossman { 10301c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock); 10311c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 10321c6a0718SPierre Ossman int rc; 10331c6a0718SPierre Ossman 10341c6a0718SPierre Ossman rc = tifm_sd_initialize_host(host); 10351c6a0718SPierre Ossman dev_dbg(&sock->dev, "resume initialize %d\n", rc); 10361c6a0718SPierre Ossman 10371c6a0718SPierre Ossman if (rc) 10381c6a0718SPierre Ossman host->eject = 1; 10391c6a0718SPierre Ossman 10401c6a0718SPierre Ossman return rc; 10411c6a0718SPierre Ossman } 10421c6a0718SPierre Ossman 10431c6a0718SPierre Ossman #else 10441c6a0718SPierre Ossman 10451c6a0718SPierre Ossman #define tifm_sd_suspend NULL 10461c6a0718SPierre Ossman #define tifm_sd_resume NULL 10471c6a0718SPierre Ossman 10481c6a0718SPierre Ossman #endif /* CONFIG_PM */ 10491c6a0718SPierre Ossman 10501c6a0718SPierre Ossman static struct tifm_device_id tifm_sd_id_tbl[] = { 10511c6a0718SPierre Ossman { TIFM_TYPE_SD }, { } 10521c6a0718SPierre Ossman }; 10531c6a0718SPierre Ossman 10541c6a0718SPierre Ossman static struct tifm_driver tifm_sd_driver = { 10551c6a0718SPierre Ossman .driver = { 10561c6a0718SPierre Ossman .name = DRIVER_NAME, 10571c6a0718SPierre Ossman .owner = THIS_MODULE 10581c6a0718SPierre Ossman }, 10591c6a0718SPierre Ossman .id_table = tifm_sd_id_tbl, 10601c6a0718SPierre Ossman .probe = tifm_sd_probe, 10611c6a0718SPierre Ossman .remove = tifm_sd_remove, 10621c6a0718SPierre Ossman .suspend = tifm_sd_suspend, 10631c6a0718SPierre Ossman .resume = tifm_sd_resume 10641c6a0718SPierre Ossman }; 10651c6a0718SPierre Ossman 10661c6a0718SPierre Ossman static int __init tifm_sd_init(void) 10671c6a0718SPierre Ossman { 10681c6a0718SPierre Ossman return tifm_register_driver(&tifm_sd_driver); 10691c6a0718SPierre Ossman } 10701c6a0718SPierre Ossman 10711c6a0718SPierre Ossman static void __exit tifm_sd_exit(void) 10721c6a0718SPierre Ossman { 10731c6a0718SPierre Ossman tifm_unregister_driver(&tifm_sd_driver); 10741c6a0718SPierre Ossman } 10751c6a0718SPierre Ossman 10761c6a0718SPierre Ossman MODULE_AUTHOR("Alex Dubov"); 10771c6a0718SPierre Ossman MODULE_DESCRIPTION("TI FlashMedia SD driver"); 10781c6a0718SPierre Ossman MODULE_LICENSE("GPL"); 10791c6a0718SPierre Ossman MODULE_DEVICE_TABLE(tifm, tifm_sd_id_tbl); 10801c6a0718SPierre Ossman MODULE_VERSION(DRIVER_VERSION); 10811c6a0718SPierre Ossman 10821c6a0718SPierre Ossman module_init(tifm_sd_init); 10831c6a0718SPierre Ossman module_exit(tifm_sd_exit); 1084