11c6a0718SPierre Ossman /* 21c6a0718SPierre Ossman * tifm_sd.c - TI FlashMedia driver 31c6a0718SPierre Ossman * 41c6a0718SPierre Ossman * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> 51c6a0718SPierre Ossman * 61c6a0718SPierre Ossman * This program is free software; you can redistribute it and/or modify 71c6a0718SPierre Ossman * it under the terms of the GNU General Public License version 2 as 81c6a0718SPierre Ossman * published by the Free Software Foundation. 91c6a0718SPierre Ossman * 101c6a0718SPierre Ossman * Special thanks to Brad Campbell for extensive testing of this driver. 111c6a0718SPierre Ossman * 121c6a0718SPierre Ossman */ 131c6a0718SPierre Ossman 141c6a0718SPierre Ossman 151c6a0718SPierre Ossman #include <linux/tifm.h> 161c6a0718SPierre Ossman #include <linux/mmc/host.h> 171c6a0718SPierre Ossman #include <linux/highmem.h> 181c6a0718SPierre Ossman #include <linux/scatterlist.h> 1988b47679SPaul Gortmaker #include <linux/module.h> 201c6a0718SPierre Ossman #include <asm/io.h> 211c6a0718SPierre Ossman 221c6a0718SPierre Ossman #define DRIVER_NAME "tifm_sd" 231c6a0718SPierre Ossman #define DRIVER_VERSION "0.8" 241c6a0718SPierre Ossman 251c6a0718SPierre Ossman static int no_dma = 0; 261c6a0718SPierre Ossman static int fixed_timeout = 0; 271c6a0718SPierre Ossman module_param(no_dma, bool, 0644); 281c6a0718SPierre Ossman module_param(fixed_timeout, bool, 0644); 291c6a0718SPierre Ossman 301c6a0718SPierre Ossman /* Constants here are mostly from OMAP5912 datasheet */ 311c6a0718SPierre Ossman #define TIFM_MMCSD_RESET 0x0002 321c6a0718SPierre Ossman #define TIFM_MMCSD_CLKMASK 0x03ff 331c6a0718SPierre Ossman #define TIFM_MMCSD_POWER 0x0800 341c6a0718SPierre Ossman #define TIFM_MMCSD_4BBUS 0x8000 351c6a0718SPierre Ossman #define TIFM_MMCSD_RXDE 0x8000 /* rx dma enable */ 361c6a0718SPierre Ossman #define TIFM_MMCSD_TXDE 0x0080 /* tx dma enable */ 371c6a0718SPierre Ossman #define TIFM_MMCSD_BUFINT 0x0c00 /* set bits: AE, AF */ 381c6a0718SPierre Ossman #define TIFM_MMCSD_DPE 0x0020 /* data timeout counted in kilocycles */ 391c6a0718SPierre Ossman #define TIFM_MMCSD_INAB 0x0080 /* abort / initialize command */ 401c6a0718SPierre Ossman #define TIFM_MMCSD_READ 0x8000 411c6a0718SPierre Ossman 421c6a0718SPierre Ossman #define TIFM_MMCSD_ERRMASK 0x01e0 /* set bits: CCRC, CTO, DCRC, DTO */ 431c6a0718SPierre Ossman #define TIFM_MMCSD_EOC 0x0001 /* end of command phase */ 441c6a0718SPierre Ossman #define TIFM_MMCSD_CD 0x0002 /* card detect */ 451c6a0718SPierre Ossman #define TIFM_MMCSD_CB 0x0004 /* card enter busy state */ 461c6a0718SPierre Ossman #define TIFM_MMCSD_BRS 0x0008 /* block received/sent */ 471c6a0718SPierre Ossman #define TIFM_MMCSD_EOFB 0x0010 /* card exit busy state */ 481c6a0718SPierre Ossman #define TIFM_MMCSD_DTO 0x0020 /* data time-out */ 491c6a0718SPierre Ossman #define TIFM_MMCSD_DCRC 0x0040 /* data crc error */ 501c6a0718SPierre Ossman #define TIFM_MMCSD_CTO 0x0080 /* command time-out */ 511c6a0718SPierre Ossman #define TIFM_MMCSD_CCRC 0x0100 /* command crc error */ 521c6a0718SPierre Ossman #define TIFM_MMCSD_AF 0x0400 /* fifo almost full */ 531c6a0718SPierre Ossman #define TIFM_MMCSD_AE 0x0800 /* fifo almost empty */ 541c6a0718SPierre Ossman #define TIFM_MMCSD_OCRB 0x1000 /* OCR busy */ 551c6a0718SPierre Ossman #define TIFM_MMCSD_CIRQ 0x2000 /* card irq (cmd40/sdio) */ 561c6a0718SPierre Ossman #define TIFM_MMCSD_CERR 0x4000 /* card status error */ 571c6a0718SPierre Ossman 581c6a0718SPierre Ossman #define TIFM_MMCSD_ODTO 0x0040 /* open drain / extended timeout */ 591c6a0718SPierre Ossman #define TIFM_MMCSD_CARD_RO 0x0200 /* card is read-only */ 601c6a0718SPierre Ossman 611c6a0718SPierre Ossman #define TIFM_MMCSD_FIFO_SIZE 0x0020 621c6a0718SPierre Ossman 631c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R0 0x0000 641c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R1 0x0100 651c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R2 0x0200 661c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R3 0x0300 671c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R4 0x0400 681c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R5 0x0500 691c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_R6 0x0600 701c6a0718SPierre Ossman 711c6a0718SPierre Ossman #define TIFM_MMCSD_RSP_BUSY 0x0800 721c6a0718SPierre Ossman 731c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_BC 0x0000 741c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_BCR 0x1000 751c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_AC 0x2000 761c6a0718SPierre Ossman #define TIFM_MMCSD_CMD_ADTC 0x3000 771c6a0718SPierre Ossman 781c6a0718SPierre Ossman #define TIFM_MMCSD_MAX_BLOCK_SIZE 0x0800UL 791c6a0718SPierre Ossman 801c6a0718SPierre Ossman enum { 811c6a0718SPierre Ossman CMD_READY = 0x0001, 821c6a0718SPierre Ossman FIFO_READY = 0x0002, 831c6a0718SPierre Ossman BRS_READY = 0x0004, 841c6a0718SPierre Ossman SCMD_ACTIVE = 0x0008, 851c6a0718SPierre Ossman SCMD_READY = 0x0010, 861c6a0718SPierre Ossman CARD_BUSY = 0x0020, 871c6a0718SPierre Ossman DATA_CARRY = 0x0040 881c6a0718SPierre Ossman }; 891c6a0718SPierre Ossman 901c6a0718SPierre Ossman struct tifm_sd { 911c6a0718SPierre Ossman struct tifm_dev *dev; 921c6a0718SPierre Ossman 931c6a0718SPierre Ossman unsigned short eject:1, 941c6a0718SPierre Ossman open_drain:1, 951c6a0718SPierre Ossman no_dma:1; 961c6a0718SPierre Ossman unsigned short cmd_flags; 971c6a0718SPierre Ossman 981c6a0718SPierre Ossman unsigned int clk_freq; 991c6a0718SPierre Ossman unsigned int clk_div; 1001c6a0718SPierre Ossman unsigned long timeout_jiffies; 1011c6a0718SPierre Ossman 1021c6a0718SPierre Ossman struct tasklet_struct finish_tasklet; 1031c6a0718SPierre Ossman struct timer_list timer; 1041c6a0718SPierre Ossman struct mmc_request *req; 1051c6a0718SPierre Ossman 1061c6a0718SPierre Ossman int sg_len; 1071c6a0718SPierre Ossman int sg_pos; 1081c6a0718SPierre Ossman unsigned int block_pos; 1091c6a0718SPierre Ossman struct scatterlist bounce_buf; 1101c6a0718SPierre Ossman unsigned char bounce_buf_data[TIFM_MMCSD_MAX_BLOCK_SIZE]; 1111c6a0718SPierre Ossman }; 1121c6a0718SPierre Ossman 1131c6a0718SPierre Ossman /* for some reason, host won't respond correctly to readw/writew */ 1141c6a0718SPierre Ossman static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg, 1151c6a0718SPierre Ossman unsigned int off, unsigned int cnt) 1161c6a0718SPierre Ossman { 1171c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 1181c6a0718SPierre Ossman unsigned char *buf; 1191c6a0718SPierre Ossman unsigned int pos = 0, val; 1201c6a0718SPierre Ossman 121482fce99SCong Wang buf = kmap_atomic(pg) + off; 1221c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) { 1231c6a0718SPierre Ossman buf[pos++] = host->bounce_buf_data[0]; 1241c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY; 1251c6a0718SPierre Ossman } 1261c6a0718SPierre Ossman 1271c6a0718SPierre Ossman while (pos < cnt) { 1281c6a0718SPierre Ossman val = readl(sock->addr + SOCK_MMCSD_DATA); 1291c6a0718SPierre Ossman buf[pos++] = val & 0xff; 1301c6a0718SPierre Ossman if (pos == cnt) { 1311c6a0718SPierre Ossman host->bounce_buf_data[0] = (val >> 8) & 0xff; 1321c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY; 1331c6a0718SPierre Ossman break; 1341c6a0718SPierre Ossman } 1351c6a0718SPierre Ossman buf[pos++] = (val >> 8) & 0xff; 1361c6a0718SPierre Ossman } 137482fce99SCong Wang kunmap_atomic(buf - off); 1381c6a0718SPierre Ossman } 1391c6a0718SPierre Ossman 1401c6a0718SPierre Ossman static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg, 1411c6a0718SPierre Ossman unsigned int off, unsigned int cnt) 1421c6a0718SPierre Ossman { 1431c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 1441c6a0718SPierre Ossman unsigned char *buf; 1451c6a0718SPierre Ossman unsigned int pos = 0, val; 1461c6a0718SPierre Ossman 147482fce99SCong Wang buf = kmap_atomic(pg) + off; 1481c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) { 1491c6a0718SPierre Ossman val = host->bounce_buf_data[0] | ((buf[pos++] << 8) & 0xff00); 1501c6a0718SPierre Ossman writel(val, sock->addr + SOCK_MMCSD_DATA); 1511c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY; 1521c6a0718SPierre Ossman } 1531c6a0718SPierre Ossman 1541c6a0718SPierre Ossman while (pos < cnt) { 1551c6a0718SPierre Ossman val = buf[pos++]; 1561c6a0718SPierre Ossman if (pos == cnt) { 1571c6a0718SPierre Ossman host->bounce_buf_data[0] = val & 0xff; 1581c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY; 1591c6a0718SPierre Ossman break; 1601c6a0718SPierre Ossman } 1611c6a0718SPierre Ossman val |= (buf[pos++] << 8) & 0xff00; 1621c6a0718SPierre Ossman writel(val, sock->addr + SOCK_MMCSD_DATA); 1631c6a0718SPierre Ossman } 164482fce99SCong Wang kunmap_atomic(buf - off); 1651c6a0718SPierre Ossman } 1661c6a0718SPierre Ossman 1671c6a0718SPierre Ossman static void tifm_sd_transfer_data(struct tifm_sd *host) 1681c6a0718SPierre Ossman { 1691c6a0718SPierre Ossman struct mmc_data *r_data = host->req->cmd->data; 1701c6a0718SPierre Ossman struct scatterlist *sg = r_data->sg; 1711c6a0718SPierre Ossman unsigned int off, cnt, t_size = TIFM_MMCSD_FIFO_SIZE * 2; 1721c6a0718SPierre Ossman unsigned int p_off, p_cnt; 1731c6a0718SPierre Ossman struct page *pg; 1741c6a0718SPierre Ossman 1751c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 1761c6a0718SPierre Ossman return; 1771c6a0718SPierre Ossman while (t_size) { 1781c6a0718SPierre Ossman cnt = sg[host->sg_pos].length - host->block_pos; 1791c6a0718SPierre Ossman if (!cnt) { 1801c6a0718SPierre Ossman host->block_pos = 0; 1811c6a0718SPierre Ossman host->sg_pos++; 1821c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) { 1831c6a0718SPierre Ossman if ((r_data->flags & MMC_DATA_WRITE) 184ce636452SRoel Kluin && (host->cmd_flags & DATA_CARRY)) 1851c6a0718SPierre Ossman writel(host->bounce_buf_data[0], 1861c6a0718SPierre Ossman host->dev->addr 1871c6a0718SPierre Ossman + SOCK_MMCSD_DATA); 1881c6a0718SPierre Ossman 1891c6a0718SPierre Ossman return; 1901c6a0718SPierre Ossman } 1911c6a0718SPierre Ossman cnt = sg[host->sg_pos].length; 1921c6a0718SPierre Ossman } 1931c6a0718SPierre Ossman off = sg[host->sg_pos].offset + host->block_pos; 1941c6a0718SPierre Ossman 19545711f1aSJens Axboe pg = nth_page(sg_page(&sg[host->sg_pos]), off >> PAGE_SHIFT); 1961c6a0718SPierre Ossman p_off = offset_in_page(off); 1971c6a0718SPierre Ossman p_cnt = PAGE_SIZE - p_off; 1981c6a0718SPierre Ossman p_cnt = min(p_cnt, cnt); 1991c6a0718SPierre Ossman p_cnt = min(p_cnt, t_size); 2001c6a0718SPierre Ossman 2011c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_READ) 2021c6a0718SPierre Ossman tifm_sd_read_fifo(host, pg, p_off, p_cnt); 2031c6a0718SPierre Ossman else if (r_data->flags & MMC_DATA_WRITE) 2041c6a0718SPierre Ossman tifm_sd_write_fifo(host, pg, p_off, p_cnt); 2051c6a0718SPierre Ossman 2061c6a0718SPierre Ossman t_size -= p_cnt; 2071c6a0718SPierre Ossman host->block_pos += p_cnt; 2081c6a0718SPierre Ossman } 2091c6a0718SPierre Ossman } 2101c6a0718SPierre Ossman 2111c6a0718SPierre Ossman static void tifm_sd_copy_page(struct page *dst, unsigned int dst_off, 2121c6a0718SPierre Ossman struct page *src, unsigned int src_off, 2131c6a0718SPierre Ossman unsigned int count) 2141c6a0718SPierre Ossman { 215482fce99SCong Wang unsigned char *src_buf = kmap_atomic(src) + src_off; 216482fce99SCong Wang unsigned char *dst_buf = kmap_atomic(dst) + dst_off; 2171c6a0718SPierre Ossman 2181c6a0718SPierre Ossman memcpy(dst_buf, src_buf, count); 2191c6a0718SPierre Ossman 220482fce99SCong Wang kunmap_atomic(dst_buf - dst_off); 221482fce99SCong Wang kunmap_atomic(src_buf - src_off); 2221c6a0718SPierre Ossman } 2231c6a0718SPierre Ossman 2241c6a0718SPierre Ossman static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data) 2251c6a0718SPierre Ossman { 2261c6a0718SPierre Ossman struct scatterlist *sg = r_data->sg; 2271c6a0718SPierre Ossman unsigned int t_size = r_data->blksz; 2281c6a0718SPierre Ossman unsigned int off, cnt; 2291c6a0718SPierre Ossman unsigned int p_off, p_cnt; 2301c6a0718SPierre Ossman struct page *pg; 2311c6a0718SPierre Ossman 2321c6a0718SPierre Ossman dev_dbg(&host->dev->dev, "bouncing block\n"); 2331c6a0718SPierre Ossman while (t_size) { 2341c6a0718SPierre Ossman cnt = sg[host->sg_pos].length - host->block_pos; 2351c6a0718SPierre Ossman if (!cnt) { 2361c6a0718SPierre Ossman host->block_pos = 0; 2371c6a0718SPierre Ossman host->sg_pos++; 2381c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 2391c6a0718SPierre Ossman return; 2401c6a0718SPierre Ossman cnt = sg[host->sg_pos].length; 2411c6a0718SPierre Ossman } 2421c6a0718SPierre Ossman off = sg[host->sg_pos].offset + host->block_pos; 2431c6a0718SPierre Ossman 24445711f1aSJens Axboe pg = nth_page(sg_page(&sg[host->sg_pos]), off >> PAGE_SHIFT); 2451c6a0718SPierre Ossman p_off = offset_in_page(off); 2461c6a0718SPierre Ossman p_cnt = PAGE_SIZE - p_off; 2471c6a0718SPierre Ossman p_cnt = min(p_cnt, cnt); 2481c6a0718SPierre Ossman p_cnt = min(p_cnt, t_size); 2491c6a0718SPierre Ossman 2501c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE) 25145711f1aSJens Axboe tifm_sd_copy_page(sg_page(&host->bounce_buf), 2521c6a0718SPierre Ossman r_data->blksz - t_size, 2531c6a0718SPierre Ossman pg, p_off, p_cnt); 2541c6a0718SPierre Ossman else if (r_data->flags & MMC_DATA_READ) 25545711f1aSJens Axboe tifm_sd_copy_page(pg, p_off, sg_page(&host->bounce_buf), 2561c6a0718SPierre Ossman r_data->blksz - t_size, p_cnt); 2571c6a0718SPierre Ossman 2581c6a0718SPierre Ossman t_size -= p_cnt; 2591c6a0718SPierre Ossman host->block_pos += p_cnt; 2601c6a0718SPierre Ossman } 2611c6a0718SPierre Ossman } 2621c6a0718SPierre Ossman 263d97956f8SAdrian Bunk static int tifm_sd_set_dma_data(struct tifm_sd *host, struct mmc_data *r_data) 2641c6a0718SPierre Ossman { 2651c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 2661c6a0718SPierre Ossman unsigned int t_size = TIFM_DMA_TSIZE * r_data->blksz; 2671c6a0718SPierre Ossman unsigned int dma_len, dma_blk_cnt, dma_off; 2681c6a0718SPierre Ossman struct scatterlist *sg = NULL; 2691c6a0718SPierre Ossman unsigned long flags; 2701c6a0718SPierre Ossman 2711c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 2721c6a0718SPierre Ossman return 1; 2731c6a0718SPierre Ossman 2741c6a0718SPierre Ossman if (host->cmd_flags & DATA_CARRY) { 2751c6a0718SPierre Ossman host->cmd_flags &= ~DATA_CARRY; 2761c6a0718SPierre Ossman local_irq_save(flags); 2771c6a0718SPierre Ossman tifm_sd_bounce_block(host, r_data); 2781c6a0718SPierre Ossman local_irq_restore(flags); 2791c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 2801c6a0718SPierre Ossman return 1; 2811c6a0718SPierre Ossman } 2821c6a0718SPierre Ossman 2831c6a0718SPierre Ossman dma_len = sg_dma_len(&r_data->sg[host->sg_pos]) - host->block_pos; 2841c6a0718SPierre Ossman if (!dma_len) { 2851c6a0718SPierre Ossman host->block_pos = 0; 2861c6a0718SPierre Ossman host->sg_pos++; 2871c6a0718SPierre Ossman if (host->sg_pos == host->sg_len) 2881c6a0718SPierre Ossman return 1; 2891c6a0718SPierre Ossman dma_len = sg_dma_len(&r_data->sg[host->sg_pos]); 2901c6a0718SPierre Ossman } 2911c6a0718SPierre Ossman 2921c6a0718SPierre Ossman if (dma_len < t_size) { 2931c6a0718SPierre Ossman dma_blk_cnt = dma_len / r_data->blksz; 2941c6a0718SPierre Ossman dma_off = host->block_pos; 2951c6a0718SPierre Ossman host->block_pos += dma_blk_cnt * r_data->blksz; 2961c6a0718SPierre Ossman } else { 2971c6a0718SPierre Ossman dma_blk_cnt = TIFM_DMA_TSIZE; 2981c6a0718SPierre Ossman dma_off = host->block_pos; 2991c6a0718SPierre Ossman host->block_pos += t_size; 3001c6a0718SPierre Ossman } 3011c6a0718SPierre Ossman 3021c6a0718SPierre Ossman if (dma_blk_cnt) 3031c6a0718SPierre Ossman sg = &r_data->sg[host->sg_pos]; 3041c6a0718SPierre Ossman else if (dma_len) { 3051c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE) { 3061c6a0718SPierre Ossman local_irq_save(flags); 3071c6a0718SPierre Ossman tifm_sd_bounce_block(host, r_data); 3081c6a0718SPierre Ossman local_irq_restore(flags); 3091c6a0718SPierre Ossman } else 3101c6a0718SPierre Ossman host->cmd_flags |= DATA_CARRY; 3111c6a0718SPierre Ossman 3121c6a0718SPierre Ossman sg = &host->bounce_buf; 3131c6a0718SPierre Ossman dma_off = 0; 3141c6a0718SPierre Ossman dma_blk_cnt = 1; 3151c6a0718SPierre Ossman } else 3161c6a0718SPierre Ossman return 1; 3171c6a0718SPierre Ossman 3181c6a0718SPierre Ossman dev_dbg(&sock->dev, "setting dma for %d blocks\n", dma_blk_cnt); 3191c6a0718SPierre Ossman writel(sg_dma_address(sg) + dma_off, sock->addr + SOCK_DMA_ADDRESS); 3201c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE) 3211c6a0718SPierre Ossman writel((dma_blk_cnt << 8) | TIFM_DMA_TX | TIFM_DMA_EN, 3221c6a0718SPierre Ossman sock->addr + SOCK_DMA_CONTROL); 3231c6a0718SPierre Ossman else 3241c6a0718SPierre Ossman writel((dma_blk_cnt << 8) | TIFM_DMA_EN, 3251c6a0718SPierre Ossman sock->addr + SOCK_DMA_CONTROL); 3261c6a0718SPierre Ossman 3271c6a0718SPierre Ossman return 0; 3281c6a0718SPierre Ossman } 3291c6a0718SPierre Ossman 3301c6a0718SPierre Ossman static unsigned int tifm_sd_op_flags(struct mmc_command *cmd) 3311c6a0718SPierre Ossman { 3321c6a0718SPierre Ossman unsigned int rc = 0; 3331c6a0718SPierre Ossman 3341c6a0718SPierre Ossman switch (mmc_resp_type(cmd)) { 3351c6a0718SPierre Ossman case MMC_RSP_NONE: 3361c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R0; 3371c6a0718SPierre Ossman break; 3381c6a0718SPierre Ossman case MMC_RSP_R1B: 3391c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_BUSY; // deliberate fall-through 3401c6a0718SPierre Ossman case MMC_RSP_R1: 3411c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R1; 3421c6a0718SPierre Ossman break; 3431c6a0718SPierre Ossman case MMC_RSP_R2: 3441c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R2; 3451c6a0718SPierre Ossman break; 3461c6a0718SPierre Ossman case MMC_RSP_R3: 3471c6a0718SPierre Ossman rc |= TIFM_MMCSD_RSP_R3; 3481c6a0718SPierre Ossman break; 3491c6a0718SPierre Ossman default: 3501c6a0718SPierre Ossman BUG(); 3511c6a0718SPierre Ossman } 3521c6a0718SPierre Ossman 3531c6a0718SPierre Ossman switch (mmc_cmd_type(cmd)) { 3541c6a0718SPierre Ossman case MMC_CMD_BC: 3551c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_BC; 3561c6a0718SPierre Ossman break; 3571c6a0718SPierre Ossman case MMC_CMD_BCR: 3581c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_BCR; 3591c6a0718SPierre Ossman break; 3601c6a0718SPierre Ossman case MMC_CMD_AC: 3611c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_AC; 3621c6a0718SPierre Ossman break; 3631c6a0718SPierre Ossman case MMC_CMD_ADTC: 3641c6a0718SPierre Ossman rc |= TIFM_MMCSD_CMD_ADTC; 3651c6a0718SPierre Ossman break; 3661c6a0718SPierre Ossman default: 3671c6a0718SPierre Ossman BUG(); 3681c6a0718SPierre Ossman } 3691c6a0718SPierre Ossman return rc; 3701c6a0718SPierre Ossman } 3711c6a0718SPierre Ossman 3721c6a0718SPierre Ossman static void tifm_sd_exec(struct tifm_sd *host, struct mmc_command *cmd) 3731c6a0718SPierre Ossman { 3741c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 3751c6a0718SPierre Ossman unsigned int cmd_mask = tifm_sd_op_flags(cmd); 3761c6a0718SPierre Ossman 3771c6a0718SPierre Ossman if (host->open_drain) 3781c6a0718SPierre Ossman cmd_mask |= TIFM_MMCSD_ODTO; 3791c6a0718SPierre Ossman 3801c6a0718SPierre Ossman if (cmd->data && (cmd->data->flags & MMC_DATA_READ)) 3811c6a0718SPierre Ossman cmd_mask |= TIFM_MMCSD_READ; 3821c6a0718SPierre Ossman 3831c6a0718SPierre Ossman dev_dbg(&sock->dev, "executing opcode 0x%x, arg: 0x%x, mask: 0x%x\n", 3841c6a0718SPierre Ossman cmd->opcode, cmd->arg, cmd_mask); 3851c6a0718SPierre Ossman 3861c6a0718SPierre Ossman writel((cmd->arg >> 16) & 0xffff, sock->addr + SOCK_MMCSD_ARG_HIGH); 3871c6a0718SPierre Ossman writel(cmd->arg & 0xffff, sock->addr + SOCK_MMCSD_ARG_LOW); 3881c6a0718SPierre Ossman writel(cmd->opcode | cmd_mask, sock->addr + SOCK_MMCSD_COMMAND); 3891c6a0718SPierre Ossman } 3901c6a0718SPierre Ossman 3911c6a0718SPierre Ossman static void tifm_sd_fetch_resp(struct mmc_command *cmd, struct tifm_dev *sock) 3921c6a0718SPierre Ossman { 3931c6a0718SPierre Ossman cmd->resp[0] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x1c) << 16) 3941c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x18); 3951c6a0718SPierre Ossman cmd->resp[1] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x14) << 16) 3961c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x10); 3971c6a0718SPierre Ossman cmd->resp[2] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x0c) << 16) 3981c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x08); 3991c6a0718SPierre Ossman cmd->resp[3] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x04) << 16) 4001c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x00); 4011c6a0718SPierre Ossman } 4021c6a0718SPierre Ossman 4031c6a0718SPierre Ossman static void tifm_sd_check_status(struct tifm_sd *host) 4041c6a0718SPierre Ossman { 4051c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 4061c6a0718SPierre Ossman struct mmc_command *cmd = host->req->cmd; 4071c6a0718SPierre Ossman 40817b0429dSPierre Ossman if (cmd->error) 4091c6a0718SPierre Ossman goto finish_request; 4101c6a0718SPierre Ossman 4111c6a0718SPierre Ossman if (!(host->cmd_flags & CMD_READY)) 4121c6a0718SPierre Ossman return; 4131c6a0718SPierre Ossman 4141c6a0718SPierre Ossman if (cmd->data) { 41517b0429dSPierre Ossman if (cmd->data->error) { 4161c6a0718SPierre Ossman if ((host->cmd_flags & SCMD_ACTIVE) 4171c6a0718SPierre Ossman && !(host->cmd_flags & SCMD_READY)) 4181c6a0718SPierre Ossman return; 4191c6a0718SPierre Ossman 4201c6a0718SPierre Ossman goto finish_request; 4211c6a0718SPierre Ossman } 4221c6a0718SPierre Ossman 4231c6a0718SPierre Ossman if (!(host->cmd_flags & BRS_READY)) 4241c6a0718SPierre Ossman return; 4251c6a0718SPierre Ossman 4261c6a0718SPierre Ossman if (!(host->no_dma || (host->cmd_flags & FIFO_READY))) 4271c6a0718SPierre Ossman return; 4281c6a0718SPierre Ossman 4291c6a0718SPierre Ossman if (cmd->data->flags & MMC_DATA_WRITE) { 4301c6a0718SPierre Ossman if (host->req->stop) { 4311c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_ACTIVE)) { 4321c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE; 4331c6a0718SPierre Ossman writel(TIFM_MMCSD_EOFB 4341c6a0718SPierre Ossman | readl(sock->addr 4351c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE), 4361c6a0718SPierre Ossman sock->addr 4371c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE); 4381c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop); 4391c6a0718SPierre Ossman return; 4401c6a0718SPierre Ossman } else { 4411c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_READY) 4421c6a0718SPierre Ossman || (host->cmd_flags & CARD_BUSY)) 4431c6a0718SPierre Ossman return; 4441c6a0718SPierre Ossman writel((~TIFM_MMCSD_EOFB) 4451c6a0718SPierre Ossman & readl(sock->addr 4461c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE), 4471c6a0718SPierre Ossman sock->addr 4481c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE); 4491c6a0718SPierre Ossman } 4501c6a0718SPierre Ossman } else { 4511c6a0718SPierre Ossman if (host->cmd_flags & CARD_BUSY) 4521c6a0718SPierre Ossman return; 4531c6a0718SPierre Ossman writel((~TIFM_MMCSD_EOFB) 4541c6a0718SPierre Ossman & readl(sock->addr 4551c6a0718SPierre Ossman + SOCK_MMCSD_INT_ENABLE), 4561c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 4571c6a0718SPierre Ossman } 4581c6a0718SPierre Ossman } else { 4591c6a0718SPierre Ossman if (host->req->stop) { 4601c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_ACTIVE)) { 4611c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE; 4621c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop); 4631c6a0718SPierre Ossman return; 4641c6a0718SPierre Ossman } else { 4651c6a0718SPierre Ossman if (!(host->cmd_flags & SCMD_READY)) 4661c6a0718SPierre Ossman return; 4671c6a0718SPierre Ossman } 4681c6a0718SPierre Ossman } 4691c6a0718SPierre Ossman } 4701c6a0718SPierre Ossman } 4711c6a0718SPierre Ossman finish_request: 4721c6a0718SPierre Ossman tasklet_schedule(&host->finish_tasklet); 4731c6a0718SPierre Ossman } 4741c6a0718SPierre Ossman 4751c6a0718SPierre Ossman /* Called from interrupt handler */ 4761c6a0718SPierre Ossman static void tifm_sd_data_event(struct tifm_dev *sock) 4771c6a0718SPierre Ossman { 4781c6a0718SPierre Ossman struct tifm_sd *host; 4791c6a0718SPierre Ossman unsigned int fifo_status = 0; 4801c6a0718SPierre Ossman struct mmc_data *r_data = NULL; 4811c6a0718SPierre Ossman 4821c6a0718SPierre Ossman spin_lock(&sock->lock); 4831c6a0718SPierre Ossman host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock)); 4841c6a0718SPierre Ossman fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS); 4851c6a0718SPierre Ossman dev_dbg(&sock->dev, "data event: fifo_status %x, flags %x\n", 4861c6a0718SPierre Ossman fifo_status, host->cmd_flags); 4871c6a0718SPierre Ossman 4881c6a0718SPierre Ossman if (host->req) { 4891c6a0718SPierre Ossman r_data = host->req->cmd->data; 4901c6a0718SPierre Ossman 4911c6a0718SPierre Ossman if (r_data && (fifo_status & TIFM_FIFO_READY)) { 4921c6a0718SPierre Ossman if (tifm_sd_set_dma_data(host, r_data)) { 4931c6a0718SPierre Ossman host->cmd_flags |= FIFO_READY; 4941c6a0718SPierre Ossman tifm_sd_check_status(host); 4951c6a0718SPierre Ossman } 4961c6a0718SPierre Ossman } 4971c6a0718SPierre Ossman } 4981c6a0718SPierre Ossman 4991c6a0718SPierre Ossman writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS); 5001c6a0718SPierre Ossman spin_unlock(&sock->lock); 5011c6a0718SPierre Ossman } 5021c6a0718SPierre Ossman 5031c6a0718SPierre Ossman /* Called from interrupt handler */ 5041c6a0718SPierre Ossman static void tifm_sd_card_event(struct tifm_dev *sock) 5051c6a0718SPierre Ossman { 5061c6a0718SPierre Ossman struct tifm_sd *host; 5071c6a0718SPierre Ossman unsigned int host_status = 0; 50817b0429dSPierre Ossman int cmd_error = 0; 5091c6a0718SPierre Ossman struct mmc_command *cmd = NULL; 5101c6a0718SPierre Ossman unsigned long flags; 5111c6a0718SPierre Ossman 5121c6a0718SPierre Ossman spin_lock(&sock->lock); 5131c6a0718SPierre Ossman host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock)); 5141c6a0718SPierre Ossman host_status = readl(sock->addr + SOCK_MMCSD_STATUS); 5151c6a0718SPierre Ossman dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n", 5161c6a0718SPierre Ossman host_status, host->cmd_flags); 5171c6a0718SPierre Ossman 5181c6a0718SPierre Ossman if (host->req) { 5191c6a0718SPierre Ossman cmd = host->req->cmd; 5201c6a0718SPierre Ossman 5211c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_ERRMASK) { 5221c6a0718SPierre Ossman writel(host_status & TIFM_MMCSD_ERRMASK, 5231c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_STATUS); 5241c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_CTO) 52517b0429dSPierre Ossman cmd_error = -ETIMEDOUT; 5261c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_CCRC) 52717b0429dSPierre Ossman cmd_error = -EILSEQ; 5281c6a0718SPierre Ossman 5291c6a0718SPierre Ossman if (cmd->data) { 5301c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_DTO) 53117b0429dSPierre Ossman cmd->data->error = -ETIMEDOUT; 5321c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_DCRC) 53317b0429dSPierre Ossman cmd->data->error = -EILSEQ; 5341c6a0718SPierre Ossman } 5351c6a0718SPierre Ossman 5361c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL, 5371c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); 5381c6a0718SPierre Ossman writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL); 5391c6a0718SPierre Ossman 5401c6a0718SPierre Ossman if (host->req->stop) { 5411c6a0718SPierre Ossman if (host->cmd_flags & SCMD_ACTIVE) { 5421c6a0718SPierre Ossman host->req->stop->error = cmd_error; 5431c6a0718SPierre Ossman host->cmd_flags |= SCMD_READY; 5441c6a0718SPierre Ossman } else { 5451c6a0718SPierre Ossman cmd->error = cmd_error; 5461c6a0718SPierre Ossman host->cmd_flags |= SCMD_ACTIVE; 5471c6a0718SPierre Ossman tifm_sd_exec(host, host->req->stop); 5481c6a0718SPierre Ossman goto done; 5491c6a0718SPierre Ossman } 5501c6a0718SPierre Ossman } else 5511c6a0718SPierre Ossman cmd->error = cmd_error; 5521c6a0718SPierre Ossman } else { 5531c6a0718SPierre Ossman if (host_status & (TIFM_MMCSD_EOC | TIFM_MMCSD_CERR)) { 5541c6a0718SPierre Ossman if (!(host->cmd_flags & CMD_READY)) { 5551c6a0718SPierre Ossman host->cmd_flags |= CMD_READY; 5561c6a0718SPierre Ossman tifm_sd_fetch_resp(cmd, sock); 5571c6a0718SPierre Ossman } else if (host->cmd_flags & SCMD_ACTIVE) { 5581c6a0718SPierre Ossman host->cmd_flags |= SCMD_READY; 5591c6a0718SPierre Ossman tifm_sd_fetch_resp(host->req->stop, 5601c6a0718SPierre Ossman sock); 5611c6a0718SPierre Ossman } 5621c6a0718SPierre Ossman } 5631c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_BRS) 5641c6a0718SPierre Ossman host->cmd_flags |= BRS_READY; 5651c6a0718SPierre Ossman } 5661c6a0718SPierre Ossman 5671c6a0718SPierre Ossman if (host->no_dma && cmd->data) { 5681c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_AE) 5691c6a0718SPierre Ossman writel(host_status & TIFM_MMCSD_AE, 5701c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_STATUS); 5711c6a0718SPierre Ossman 5721c6a0718SPierre Ossman if (host_status & (TIFM_MMCSD_AE | TIFM_MMCSD_AF 5731c6a0718SPierre Ossman | TIFM_MMCSD_BRS)) { 5741c6a0718SPierre Ossman local_irq_save(flags); 5751c6a0718SPierre Ossman tifm_sd_transfer_data(host); 5761c6a0718SPierre Ossman local_irq_restore(flags); 5771c6a0718SPierre Ossman host_status &= ~TIFM_MMCSD_AE; 5781c6a0718SPierre Ossman } 5791c6a0718SPierre Ossman } 5801c6a0718SPierre Ossman 5811c6a0718SPierre Ossman if (host_status & TIFM_MMCSD_EOFB) 5821c6a0718SPierre Ossman host->cmd_flags &= ~CARD_BUSY; 5831c6a0718SPierre Ossman else if (host_status & TIFM_MMCSD_CB) 5841c6a0718SPierre Ossman host->cmd_flags |= CARD_BUSY; 5851c6a0718SPierre Ossman 5861c6a0718SPierre Ossman tifm_sd_check_status(host); 5871c6a0718SPierre Ossman } 5881c6a0718SPierre Ossman done: 5891c6a0718SPierre Ossman writel(host_status, sock->addr + SOCK_MMCSD_STATUS); 5901c6a0718SPierre Ossman spin_unlock(&sock->lock); 5911c6a0718SPierre Ossman } 5921c6a0718SPierre Ossman 5931c6a0718SPierre Ossman static void tifm_sd_set_data_timeout(struct tifm_sd *host, 5941c6a0718SPierre Ossman struct mmc_data *data) 5951c6a0718SPierre Ossman { 5961c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 5971c6a0718SPierre Ossman unsigned int data_timeout = data->timeout_clks; 5981c6a0718SPierre Ossman 5991c6a0718SPierre Ossman if (fixed_timeout) 6001c6a0718SPierre Ossman return; 6011c6a0718SPierre Ossman 6021c6a0718SPierre Ossman data_timeout += data->timeout_ns / 6031c6a0718SPierre Ossman ((1000000000UL / host->clk_freq) * host->clk_div); 6041c6a0718SPierre Ossman 6051c6a0718SPierre Ossman if (data_timeout < 0xffff) { 6061c6a0718SPierre Ossman writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO); 6071c6a0718SPierre Ossman writel((~TIFM_MMCSD_DPE) 6081c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG), 6091c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG); 6101c6a0718SPierre Ossman } else { 6111c6a0718SPierre Ossman data_timeout = (data_timeout >> 10) + 1; 6121c6a0718SPierre Ossman if (data_timeout > 0xffff) 6131c6a0718SPierre Ossman data_timeout = 0; /* set to unlimited */ 6141c6a0718SPierre Ossman writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO); 6151c6a0718SPierre Ossman writel(TIFM_MMCSD_DPE 6161c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG), 6171c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG); 6181c6a0718SPierre Ossman } 6191c6a0718SPierre Ossman } 6201c6a0718SPierre Ossman 6211c6a0718SPierre Ossman static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq) 6221c6a0718SPierre Ossman { 6231c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 6241c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 6251c6a0718SPierre Ossman unsigned long flags; 6261c6a0718SPierre Ossman struct mmc_data *r_data = mrq->cmd->data; 6271c6a0718SPierre Ossman 6281c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 6291c6a0718SPierre Ossman if (host->eject) { 630255d01afSPierre Ossman mrq->cmd->error = -ENOMEDIUM; 6311c6a0718SPierre Ossman goto err_out; 6321c6a0718SPierre Ossman } 6331c6a0718SPierre Ossman 6341c6a0718SPierre Ossman if (host->req) { 635a3c76eb9SGirish K S pr_err("%s : unfinished request detected\n", 636d1b26863SKay Sievers dev_name(&sock->dev)); 637255d01afSPierre Ossman mrq->cmd->error = -ETIMEDOUT; 638255d01afSPierre Ossman goto err_out; 639255d01afSPierre Ossman } 640255d01afSPierre Ossman 6411c6a0718SPierre Ossman host->cmd_flags = 0; 6421c6a0718SPierre Ossman host->block_pos = 0; 6431c6a0718SPierre Ossman host->sg_pos = 0; 6441c6a0718SPierre Ossman 645b37a0506SAlex Dubov if (mrq->data && !is_power_of_2(mrq->data->blksz)) 646b37a0506SAlex Dubov host->no_dma = 1; 647b37a0506SAlex Dubov else 648b37a0506SAlex Dubov host->no_dma = no_dma ? 1 : 0; 649b37a0506SAlex Dubov 6501c6a0718SPierre Ossman if (r_data) { 6511c6a0718SPierre Ossman tifm_sd_set_data_timeout(host, r_data); 6521c6a0718SPierre Ossman 6531c6a0718SPierre Ossman if ((r_data->flags & MMC_DATA_WRITE) && !mrq->stop) 6541c6a0718SPierre Ossman writel(TIFM_MMCSD_EOFB 6551c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_INT_ENABLE), 6561c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 6571c6a0718SPierre Ossman 6581c6a0718SPierre Ossman if (host->no_dma) { 6591c6a0718SPierre Ossman writel(TIFM_MMCSD_BUFINT 6601c6a0718SPierre Ossman | readl(sock->addr + SOCK_MMCSD_INT_ENABLE), 6611c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 6621c6a0718SPierre Ossman writel(((TIFM_MMCSD_FIFO_SIZE - 1) << 8) 6631c6a0718SPierre Ossman | (TIFM_MMCSD_FIFO_SIZE - 1), 6641c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG); 6651c6a0718SPierre Ossman 6661c6a0718SPierre Ossman host->sg_len = r_data->sg_len; 6671c6a0718SPierre Ossman } else { 6681c6a0718SPierre Ossman sg_init_one(&host->bounce_buf, host->bounce_buf_data, 6691c6a0718SPierre Ossman r_data->blksz); 6701c6a0718SPierre Ossman 6711c6a0718SPierre Ossman if(1 != tifm_map_sg(sock, &host->bounce_buf, 1, 6721c6a0718SPierre Ossman r_data->flags & MMC_DATA_WRITE 6731c6a0718SPierre Ossman ? PCI_DMA_TODEVICE 6741c6a0718SPierre Ossman : PCI_DMA_FROMDEVICE)) { 675a3c76eb9SGirish K S pr_err("%s : scatterlist map failed\n", 676d1b26863SKay Sievers dev_name(&sock->dev)); 677b37a0506SAlex Dubov mrq->cmd->error = -ENOMEM; 6781c6a0718SPierre Ossman goto err_out; 6791c6a0718SPierre Ossman } 6801c6a0718SPierre Ossman host->sg_len = tifm_map_sg(sock, r_data->sg, 6811c6a0718SPierre Ossman r_data->sg_len, 6821c6a0718SPierre Ossman r_data->flags 6831c6a0718SPierre Ossman & MMC_DATA_WRITE 6841c6a0718SPierre Ossman ? PCI_DMA_TODEVICE 6851c6a0718SPierre Ossman : PCI_DMA_FROMDEVICE); 6861c6a0718SPierre Ossman if (host->sg_len < 1) { 687a3c76eb9SGirish K S pr_err("%s : scatterlist map failed\n", 688d1b26863SKay Sievers dev_name(&sock->dev)); 6891c6a0718SPierre Ossman tifm_unmap_sg(sock, &host->bounce_buf, 1, 6901c6a0718SPierre Ossman r_data->flags & MMC_DATA_WRITE 6911c6a0718SPierre Ossman ? PCI_DMA_TODEVICE 6921c6a0718SPierre Ossman : PCI_DMA_FROMDEVICE); 693b37a0506SAlex Dubov mrq->cmd->error = -ENOMEM; 6941c6a0718SPierre Ossman goto err_out; 6951c6a0718SPierre Ossman } 6961c6a0718SPierre Ossman 6971c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL, 6981c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); 6991c6a0718SPierre Ossman writel(ilog2(r_data->blksz) - 2, 7001c6a0718SPierre Ossman sock->addr + SOCK_FIFO_PAGE_SIZE); 7011c6a0718SPierre Ossman writel(TIFM_FIFO_ENABLE, 7021c6a0718SPierre Ossman sock->addr + SOCK_FIFO_CONTROL); 7031c6a0718SPierre Ossman writel(TIFM_FIFO_INTMASK, 7041c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); 7051c6a0718SPierre Ossman 7061c6a0718SPierre Ossman if (r_data->flags & MMC_DATA_WRITE) 7071c6a0718SPierre Ossman writel(TIFM_MMCSD_TXDE, 7081c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG); 7091c6a0718SPierre Ossman else 7101c6a0718SPierre Ossman writel(TIFM_MMCSD_RXDE, 7111c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BUFFER_CONFIG); 7121c6a0718SPierre Ossman 7131c6a0718SPierre Ossman tifm_sd_set_dma_data(host, r_data); 7141c6a0718SPierre Ossman } 7151c6a0718SPierre Ossman 7161c6a0718SPierre Ossman writel(r_data->blocks - 1, 7171c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_NUM_BLOCKS); 7181c6a0718SPierre Ossman writel(r_data->blksz - 1, 7191c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_BLOCK_LEN); 7201c6a0718SPierre Ossman } 7211c6a0718SPierre Ossman 7221c6a0718SPierre Ossman host->req = mrq; 7231c6a0718SPierre Ossman mod_timer(&host->timer, jiffies + host->timeout_jiffies); 7241c6a0718SPierre Ossman writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL), 7251c6a0718SPierre Ossman sock->addr + SOCK_CONTROL); 7261c6a0718SPierre Ossman tifm_sd_exec(host, mrq->cmd); 7271c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 7281c6a0718SPierre Ossman return; 7291c6a0718SPierre Ossman 7301c6a0718SPierre Ossman err_out: 731255d01afSPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 7321c6a0718SPierre Ossman mmc_request_done(mmc, mrq); 7331c6a0718SPierre Ossman } 7341c6a0718SPierre Ossman 7351c6a0718SPierre Ossman static void tifm_sd_end_cmd(unsigned long data) 7361c6a0718SPierre Ossman { 7371c6a0718SPierre Ossman struct tifm_sd *host = (struct tifm_sd*)data; 7381c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 7391c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock); 7401c6a0718SPierre Ossman struct mmc_request *mrq; 7411c6a0718SPierre Ossman struct mmc_data *r_data = NULL; 7421c6a0718SPierre Ossman unsigned long flags; 7431c6a0718SPierre Ossman 7441c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 7451c6a0718SPierre Ossman 7461c6a0718SPierre Ossman del_timer(&host->timer); 7471c6a0718SPierre Ossman mrq = host->req; 7481c6a0718SPierre Ossman host->req = NULL; 7491c6a0718SPierre Ossman 7501c6a0718SPierre Ossman if (!mrq) { 751a3c76eb9SGirish K S pr_err(" %s : no request to complete?\n", 752d1b26863SKay Sievers dev_name(&sock->dev)); 7531c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 7541c6a0718SPierre Ossman return; 7551c6a0718SPierre Ossman } 7561c6a0718SPierre Ossman 7571c6a0718SPierre Ossman r_data = mrq->cmd->data; 7581c6a0718SPierre Ossman if (r_data) { 7591c6a0718SPierre Ossman if (host->no_dma) { 7601c6a0718SPierre Ossman writel((~TIFM_MMCSD_BUFINT) 7611c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_INT_ENABLE), 7621c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 7631c6a0718SPierre Ossman } else { 7641c6a0718SPierre Ossman tifm_unmap_sg(sock, &host->bounce_buf, 1, 7651c6a0718SPierre Ossman (r_data->flags & MMC_DATA_WRITE) 7661c6a0718SPierre Ossman ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); 7671c6a0718SPierre Ossman tifm_unmap_sg(sock, r_data->sg, r_data->sg_len, 7681c6a0718SPierre Ossman (r_data->flags & MMC_DATA_WRITE) 7691c6a0718SPierre Ossman ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); 7701c6a0718SPierre Ossman } 7711c6a0718SPierre Ossman 7721c6a0718SPierre Ossman r_data->bytes_xfered = r_data->blocks 7731c6a0718SPierre Ossman - readl(sock->addr + SOCK_MMCSD_NUM_BLOCKS) - 1; 7741c6a0718SPierre Ossman r_data->bytes_xfered *= r_data->blksz; 7751c6a0718SPierre Ossman r_data->bytes_xfered += r_data->blksz 7761c6a0718SPierre Ossman - readl(sock->addr + SOCK_MMCSD_BLOCK_LEN) + 1; 7771c6a0718SPierre Ossman } 7781c6a0718SPierre Ossman 7791c6a0718SPierre Ossman writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL), 7801c6a0718SPierre Ossman sock->addr + SOCK_CONTROL); 7811c6a0718SPierre Ossman 7821c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 7831c6a0718SPierre Ossman mmc_request_done(mmc, mrq); 7841c6a0718SPierre Ossman } 7851c6a0718SPierre Ossman 7861c6a0718SPierre Ossman static void tifm_sd_abort(unsigned long data) 7871c6a0718SPierre Ossman { 7881c6a0718SPierre Ossman struct tifm_sd *host = (struct tifm_sd*)data; 7891c6a0718SPierre Ossman 790a3c76eb9SGirish K S pr_err("%s : card failed to respond for a long period of time " 7911c6a0718SPierre Ossman "(%x, %x)\n", 792d1b26863SKay Sievers dev_name(&host->dev->dev), host->req->cmd->opcode, host->cmd_flags); 7931c6a0718SPierre Ossman 7941c6a0718SPierre Ossman tifm_eject(host->dev); 7951c6a0718SPierre Ossman } 7961c6a0718SPierre Ossman 7971c6a0718SPierre Ossman static void tifm_sd_ios(struct mmc_host *mmc, struct mmc_ios *ios) 7981c6a0718SPierre Ossman { 7991c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 8001c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 8011c6a0718SPierre Ossman unsigned int clk_div1, clk_div2; 8021c6a0718SPierre Ossman unsigned long flags; 8031c6a0718SPierre Ossman 8041c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 8051c6a0718SPierre Ossman 8061c6a0718SPierre Ossman dev_dbg(&sock->dev, "ios: clock = %u, vdd = %x, bus_mode = %x, " 8071c6a0718SPierre Ossman "chip_select = %x, power_mode = %x, bus_width = %x\n", 8081c6a0718SPierre Ossman ios->clock, ios->vdd, ios->bus_mode, ios->chip_select, 8091c6a0718SPierre Ossman ios->power_mode, ios->bus_width); 8101c6a0718SPierre Ossman 8111c6a0718SPierre Ossman if (ios->bus_width == MMC_BUS_WIDTH_4) { 8121c6a0718SPierre Ossman writel(TIFM_MMCSD_4BBUS | readl(sock->addr + SOCK_MMCSD_CONFIG), 8131c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 8141c6a0718SPierre Ossman } else { 8151c6a0718SPierre Ossman writel((~TIFM_MMCSD_4BBUS) 8161c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_CONFIG), 8171c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 8181c6a0718SPierre Ossman } 8191c6a0718SPierre Ossman 8201c6a0718SPierre Ossman if (ios->clock) { 8211c6a0718SPierre Ossman clk_div1 = 20000000 / ios->clock; 8221c6a0718SPierre Ossman if (!clk_div1) 8231c6a0718SPierre Ossman clk_div1 = 1; 8241c6a0718SPierre Ossman 8251c6a0718SPierre Ossman clk_div2 = 24000000 / ios->clock; 8261c6a0718SPierre Ossman if (!clk_div2) 8271c6a0718SPierre Ossman clk_div2 = 1; 8281c6a0718SPierre Ossman 8291c6a0718SPierre Ossman if ((20000000 / clk_div1) > ios->clock) 8301c6a0718SPierre Ossman clk_div1++; 8311c6a0718SPierre Ossman if ((24000000 / clk_div2) > ios->clock) 8321c6a0718SPierre Ossman clk_div2++; 8331c6a0718SPierre Ossman if ((20000000 / clk_div1) > (24000000 / clk_div2)) { 8341c6a0718SPierre Ossman host->clk_freq = 20000000; 8351c6a0718SPierre Ossman host->clk_div = clk_div1; 8361c6a0718SPierre Ossman writel((~TIFM_CTRL_FAST_CLK) 8371c6a0718SPierre Ossman & readl(sock->addr + SOCK_CONTROL), 8381c6a0718SPierre Ossman sock->addr + SOCK_CONTROL); 8391c6a0718SPierre Ossman } else { 8401c6a0718SPierre Ossman host->clk_freq = 24000000; 8411c6a0718SPierre Ossman host->clk_div = clk_div2; 8421c6a0718SPierre Ossman writel(TIFM_CTRL_FAST_CLK 8431c6a0718SPierre Ossman | readl(sock->addr + SOCK_CONTROL), 8441c6a0718SPierre Ossman sock->addr + SOCK_CONTROL); 8451c6a0718SPierre Ossman } 8461c6a0718SPierre Ossman } else { 8471c6a0718SPierre Ossman host->clk_div = 0; 8481c6a0718SPierre Ossman } 8491c6a0718SPierre Ossman host->clk_div &= TIFM_MMCSD_CLKMASK; 8501c6a0718SPierre Ossman writel(host->clk_div 8511c6a0718SPierre Ossman | ((~TIFM_MMCSD_CLKMASK) 8521c6a0718SPierre Ossman & readl(sock->addr + SOCK_MMCSD_CONFIG)), 8531c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 8541c6a0718SPierre Ossman 8551c6a0718SPierre Ossman host->open_drain = (ios->bus_mode == MMC_BUSMODE_OPENDRAIN); 8561c6a0718SPierre Ossman 8571c6a0718SPierre Ossman /* chip_select : maybe later */ 8581c6a0718SPierre Ossman //vdd 8591c6a0718SPierre Ossman //power is set before probe / after remove 8601c6a0718SPierre Ossman 8611c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 8621c6a0718SPierre Ossman } 8631c6a0718SPierre Ossman 8641c6a0718SPierre Ossman static int tifm_sd_ro(struct mmc_host *mmc) 8651c6a0718SPierre Ossman { 8661c6a0718SPierre Ossman int rc = 0; 8671c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 8681c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 8691c6a0718SPierre Ossman unsigned long flags; 8701c6a0718SPierre Ossman 8711c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 8721c6a0718SPierre Ossman if (TIFM_MMCSD_CARD_RO & readl(sock->addr + SOCK_PRESENT_STATE)) 8731c6a0718SPierre Ossman rc = 1; 8741c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 8751c6a0718SPierre Ossman return rc; 8761c6a0718SPierre Ossman } 8771c6a0718SPierre Ossman 8781c6a0718SPierre Ossman static const struct mmc_host_ops tifm_sd_ops = { 8791c6a0718SPierre Ossman .request = tifm_sd_request, 8801c6a0718SPierre Ossman .set_ios = tifm_sd_ios, 8811c6a0718SPierre Ossman .get_ro = tifm_sd_ro 8821c6a0718SPierre Ossman }; 8831c6a0718SPierre Ossman 8841c6a0718SPierre Ossman static int tifm_sd_initialize_host(struct tifm_sd *host) 8851c6a0718SPierre Ossman { 8861c6a0718SPierre Ossman int rc; 8871c6a0718SPierre Ossman unsigned int host_status = 0; 8881c6a0718SPierre Ossman struct tifm_dev *sock = host->dev; 8891c6a0718SPierre Ossman 8901c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE); 8911c6a0718SPierre Ossman mmiowb(); 8921c6a0718SPierre Ossman host->clk_div = 61; 8931c6a0718SPierre Ossman host->clk_freq = 20000000; 8941c6a0718SPierre Ossman writel(TIFM_MMCSD_RESET, sock->addr + SOCK_MMCSD_SYSTEM_CONTROL); 8951c6a0718SPierre Ossman writel(host->clk_div | TIFM_MMCSD_POWER, 8961c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 8971c6a0718SPierre Ossman 8981c6a0718SPierre Ossman /* wait up to 0.51 sec for reset */ 8991c6a0718SPierre Ossman for (rc = 32; rc <= 256; rc <<= 1) { 9001c6a0718SPierre Ossman if (1 & readl(sock->addr + SOCK_MMCSD_SYSTEM_STATUS)) { 9011c6a0718SPierre Ossman rc = 0; 9021c6a0718SPierre Ossman break; 9031c6a0718SPierre Ossman } 9041c6a0718SPierre Ossman msleep(rc); 9051c6a0718SPierre Ossman } 9061c6a0718SPierre Ossman 9071c6a0718SPierre Ossman if (rc) { 908a3c76eb9SGirish K S pr_err("%s : controller failed to reset\n", 909d1b26863SKay Sievers dev_name(&sock->dev)); 9101c6a0718SPierre Ossman return -ENODEV; 9111c6a0718SPierre Ossman } 9121c6a0718SPierre Ossman 9131c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_NUM_BLOCKS); 9141c6a0718SPierre Ossman writel(host->clk_div | TIFM_MMCSD_POWER, 9151c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_CONFIG); 9161c6a0718SPierre Ossman writel(TIFM_MMCSD_RXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG); 9171c6a0718SPierre Ossman 9181c6a0718SPierre Ossman // command timeout fixed to 64 clocks for now 9191c6a0718SPierre Ossman writel(64, sock->addr + SOCK_MMCSD_COMMAND_TO); 9201c6a0718SPierre Ossman writel(TIFM_MMCSD_INAB, sock->addr + SOCK_MMCSD_COMMAND); 9211c6a0718SPierre Ossman 9221c6a0718SPierre Ossman for (rc = 16; rc <= 64; rc <<= 1) { 9231c6a0718SPierre Ossman host_status = readl(sock->addr + SOCK_MMCSD_STATUS); 9241c6a0718SPierre Ossman writel(host_status, sock->addr + SOCK_MMCSD_STATUS); 9251c6a0718SPierre Ossman if (!(host_status & TIFM_MMCSD_ERRMASK) 9261c6a0718SPierre Ossman && (host_status & TIFM_MMCSD_EOC)) { 9271c6a0718SPierre Ossman rc = 0; 9281c6a0718SPierre Ossman break; 9291c6a0718SPierre Ossman } 9301c6a0718SPierre Ossman msleep(rc); 9311c6a0718SPierre Ossman } 9321c6a0718SPierre Ossman 9331c6a0718SPierre Ossman if (rc) { 934a3c76eb9SGirish K S pr_err("%s : card not ready - probe failed on initialization\n", 935d1b26863SKay Sievers dev_name(&sock->dev)); 9361c6a0718SPierre Ossman return -ENODEV; 9371c6a0718SPierre Ossman } 9381c6a0718SPierre Ossman 9391c6a0718SPierre Ossman writel(TIFM_MMCSD_CERR | TIFM_MMCSD_BRS | TIFM_MMCSD_EOC 9401c6a0718SPierre Ossman | TIFM_MMCSD_ERRMASK, 9411c6a0718SPierre Ossman sock->addr + SOCK_MMCSD_INT_ENABLE); 9421c6a0718SPierre Ossman mmiowb(); 9431c6a0718SPierre Ossman 9441c6a0718SPierre Ossman return 0; 9451c6a0718SPierre Ossman } 9461c6a0718SPierre Ossman 9471c6a0718SPierre Ossman static int tifm_sd_probe(struct tifm_dev *sock) 9481c6a0718SPierre Ossman { 9491c6a0718SPierre Ossman struct mmc_host *mmc; 9501c6a0718SPierre Ossman struct tifm_sd *host; 9511c6a0718SPierre Ossman int rc = -EIO; 9521c6a0718SPierre Ossman 9531c6a0718SPierre Ossman if (!(TIFM_SOCK_STATE_OCCUPIED 9541c6a0718SPierre Ossman & readl(sock->addr + SOCK_PRESENT_STATE))) { 955a3c76eb9SGirish K S pr_warning("%s : card gone, unexpectedly\n", 956d1b26863SKay Sievers dev_name(&sock->dev)); 9571c6a0718SPierre Ossman return rc; 9581c6a0718SPierre Ossman } 9591c6a0718SPierre Ossman 9601c6a0718SPierre Ossman mmc = mmc_alloc_host(sizeof(struct tifm_sd), &sock->dev); 9611c6a0718SPierre Ossman if (!mmc) 9621c6a0718SPierre Ossman return -ENOMEM; 9631c6a0718SPierre Ossman 9641c6a0718SPierre Ossman host = mmc_priv(mmc); 9651c6a0718SPierre Ossman tifm_set_drvdata(sock, mmc); 9661c6a0718SPierre Ossman host->dev = sock; 9671c6a0718SPierre Ossman host->timeout_jiffies = msecs_to_jiffies(1000); 9681c6a0718SPierre Ossman 9691c6a0718SPierre Ossman tasklet_init(&host->finish_tasklet, tifm_sd_end_cmd, 9701c6a0718SPierre Ossman (unsigned long)host); 9711c6a0718SPierre Ossman setup_timer(&host->timer, tifm_sd_abort, (unsigned long)host); 9721c6a0718SPierre Ossman 9731c6a0718SPierre Ossman mmc->ops = &tifm_sd_ops; 9741c6a0718SPierre Ossman mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; 97523af6039SPierre Ossman mmc->caps = MMC_CAP_4_BIT_DATA; 9761c6a0718SPierre Ossman mmc->f_min = 20000000 / 60; 9771c6a0718SPierre Ossman mmc->f_max = 24000000; 9781c6a0718SPierre Ossman 9791c6a0718SPierre Ossman mmc->max_blk_count = 2048; 980a36274e0SMartin K. Petersen mmc->max_segs = mmc->max_blk_count; 9811c6a0718SPierre Ossman mmc->max_blk_size = min(TIFM_MMCSD_MAX_BLOCK_SIZE, PAGE_SIZE); 9821c6a0718SPierre Ossman mmc->max_seg_size = mmc->max_blk_count * mmc->max_blk_size; 9831c6a0718SPierre Ossman mmc->max_req_size = mmc->max_seg_size; 9841c6a0718SPierre Ossman 9851c6a0718SPierre Ossman sock->card_event = tifm_sd_card_event; 9861c6a0718SPierre Ossman sock->data_event = tifm_sd_data_event; 9871c6a0718SPierre Ossman rc = tifm_sd_initialize_host(host); 9881c6a0718SPierre Ossman 9891c6a0718SPierre Ossman if (!rc) 9901c6a0718SPierre Ossman rc = mmc_add_host(mmc); 9911c6a0718SPierre Ossman if (!rc) 9921c6a0718SPierre Ossman return 0; 9931c6a0718SPierre Ossman 9941c6a0718SPierre Ossman mmc_free_host(mmc); 9951c6a0718SPierre Ossman return rc; 9961c6a0718SPierre Ossman } 9971c6a0718SPierre Ossman 9981c6a0718SPierre Ossman static void tifm_sd_remove(struct tifm_dev *sock) 9991c6a0718SPierre Ossman { 10001c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock); 10011c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 10021c6a0718SPierre Ossman unsigned long flags; 10031c6a0718SPierre Ossman 10041c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 10051c6a0718SPierre Ossman host->eject = 1; 10061c6a0718SPierre Ossman writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE); 10071c6a0718SPierre Ossman mmiowb(); 10081c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 10091c6a0718SPierre Ossman 10101c6a0718SPierre Ossman tasklet_kill(&host->finish_tasklet); 10111c6a0718SPierre Ossman 10121c6a0718SPierre Ossman spin_lock_irqsave(&sock->lock, flags); 10131c6a0718SPierre Ossman if (host->req) { 10141c6a0718SPierre Ossman writel(TIFM_FIFO_INT_SETALL, 10151c6a0718SPierre Ossman sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); 10161c6a0718SPierre Ossman writel(0, sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); 101717b0429dSPierre Ossman host->req->cmd->error = -ENOMEDIUM; 10181c6a0718SPierre Ossman if (host->req->stop) 101917b0429dSPierre Ossman host->req->stop->error = -ENOMEDIUM; 10201c6a0718SPierre Ossman tasklet_schedule(&host->finish_tasklet); 10211c6a0718SPierre Ossman } 10221c6a0718SPierre Ossman spin_unlock_irqrestore(&sock->lock, flags); 10231c6a0718SPierre Ossman mmc_remove_host(mmc); 10241c6a0718SPierre Ossman dev_dbg(&sock->dev, "after remove\n"); 10251c6a0718SPierre Ossman 10261c6a0718SPierre Ossman mmc_free_host(mmc); 10271c6a0718SPierre Ossman } 10281c6a0718SPierre Ossman 10291c6a0718SPierre Ossman #ifdef CONFIG_PM 10301c6a0718SPierre Ossman 10311c6a0718SPierre Ossman static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state) 10321c6a0718SPierre Ossman { 10331a13f8faSMatt Fleming return mmc_suspend_host(tifm_get_drvdata(sock)); 10341c6a0718SPierre Ossman } 10351c6a0718SPierre Ossman 10361c6a0718SPierre Ossman static int tifm_sd_resume(struct tifm_dev *sock) 10371c6a0718SPierre Ossman { 10381c6a0718SPierre Ossman struct mmc_host *mmc = tifm_get_drvdata(sock); 10391c6a0718SPierre Ossman struct tifm_sd *host = mmc_priv(mmc); 10401c6a0718SPierre Ossman int rc; 10411c6a0718SPierre Ossman 10421c6a0718SPierre Ossman rc = tifm_sd_initialize_host(host); 10431c6a0718SPierre Ossman dev_dbg(&sock->dev, "resume initialize %d\n", rc); 10441c6a0718SPierre Ossman 10451c6a0718SPierre Ossman if (rc) 10461c6a0718SPierre Ossman host->eject = 1; 10471c6a0718SPierre Ossman else 10481c6a0718SPierre Ossman rc = mmc_resume_host(mmc); 10491c6a0718SPierre Ossman 10501c6a0718SPierre Ossman return rc; 10511c6a0718SPierre Ossman } 10521c6a0718SPierre Ossman 10531c6a0718SPierre Ossman #else 10541c6a0718SPierre Ossman 10551c6a0718SPierre Ossman #define tifm_sd_suspend NULL 10561c6a0718SPierre Ossman #define tifm_sd_resume NULL 10571c6a0718SPierre Ossman 10581c6a0718SPierre Ossman #endif /* CONFIG_PM */ 10591c6a0718SPierre Ossman 10601c6a0718SPierre Ossman static struct tifm_device_id tifm_sd_id_tbl[] = { 10611c6a0718SPierre Ossman { TIFM_TYPE_SD }, { } 10621c6a0718SPierre Ossman }; 10631c6a0718SPierre Ossman 10641c6a0718SPierre Ossman static struct tifm_driver tifm_sd_driver = { 10651c6a0718SPierre Ossman .driver = { 10661c6a0718SPierre Ossman .name = DRIVER_NAME, 10671c6a0718SPierre Ossman .owner = THIS_MODULE 10681c6a0718SPierre Ossman }, 10691c6a0718SPierre Ossman .id_table = tifm_sd_id_tbl, 10701c6a0718SPierre Ossman .probe = tifm_sd_probe, 10711c6a0718SPierre Ossman .remove = tifm_sd_remove, 10721c6a0718SPierre Ossman .suspend = tifm_sd_suspend, 10731c6a0718SPierre Ossman .resume = tifm_sd_resume 10741c6a0718SPierre Ossman }; 10751c6a0718SPierre Ossman 10761c6a0718SPierre Ossman static int __init tifm_sd_init(void) 10771c6a0718SPierre Ossman { 10781c6a0718SPierre Ossman return tifm_register_driver(&tifm_sd_driver); 10791c6a0718SPierre Ossman } 10801c6a0718SPierre Ossman 10811c6a0718SPierre Ossman static void __exit tifm_sd_exit(void) 10821c6a0718SPierre Ossman { 10831c6a0718SPierre Ossman tifm_unregister_driver(&tifm_sd_driver); 10841c6a0718SPierre Ossman } 10851c6a0718SPierre Ossman 10861c6a0718SPierre Ossman MODULE_AUTHOR("Alex Dubov"); 10871c6a0718SPierre Ossman MODULE_DESCRIPTION("TI FlashMedia SD driver"); 10881c6a0718SPierre Ossman MODULE_LICENSE("GPL"); 10891c6a0718SPierre Ossman MODULE_DEVICE_TABLE(tifm, tifm_sd_id_tbl); 10901c6a0718SPierre Ossman MODULE_VERSION(DRIVER_VERSION); 10911c6a0718SPierre Ossman 10921c6a0718SPierre Ossman module_init(tifm_sd_init); 10931c6a0718SPierre Ossman module_exit(tifm_sd_exit); 1094