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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-25 01:01:33 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-25 01:01:33 (GMT) |
commit | 842d9b2c6a9189c8954d1d03dadde7403992baed (patch) | |
tree | 33abd1a9f5deb51be763429fbeadf044d5cb8d8c | |
parent | 5e82ea99827f6aa122fbb08f8659e76226ce107b (diff) | |
parent | 727a99a576ba562e5074d54cfcc57a1ce101c240 (diff) | |
download | linux-fsl-qoriq-842d9b2c6a9189c8954d1d03dadde7403992baed.tar.xz |
Merge branch 'for-38-rc3' of git://codeaurora.org/quic/kernel/davidb/linux-msm
* 'for-38-rc3' of git://codeaurora.org/quic/kernel/davidb/linux-msm:
drivers: mmc: msm: remove clock disable in probe
mmc: msm: fix dma usage not to use internal APIs
-rw-r--r-- | drivers/mmc/host/msm_sdcc.c | 52 |
1 files changed, 22 insertions, 30 deletions
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c index 5decfd0..153ab97 100644 --- a/drivers/mmc/host/msm_sdcc.c +++ b/drivers/mmc/host/msm_sdcc.c @@ -383,14 +383,30 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data) host->curr.user_pages = 0; box = &nc->cmd[0]; - for (i = 0; i < host->dma.num_ents; i++) { - box->cmd = CMD_MODE_BOX; - /* Initialize sg dma address */ - sg->dma_address = page_to_dma(mmc_dev(host->mmc), sg_page(sg)) - + sg->offset; + /* location of command block must be 64 bit aligned */ + BUG_ON(host->dma.cmd_busaddr & 0x07); - if (i == (host->dma.num_ents - 1)) + nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP; + host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST | + DMOV_CMD_ADDR(host->dma.cmdptr_busaddr); + host->dma.hdr.complete_func = msmsdcc_dma_complete_func; + + n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg, + host->dma.num_ents, host->dma.dir); + if (n == 0) { + printk(KERN_ERR "%s: Unable to map in all sg elements\n", + mmc_hostname(host->mmc)); + host->dma.sg = NULL; + host->dma.num_ents = 0; + return -ENOMEM; + } + + for_each_sg(host->dma.sg, sg, n, i) { + + box->cmd = CMD_MODE_BOX; + + if (i == n - 1) box->cmd |= CMD_LC; rows = (sg_dma_len(sg) % MCI_FIFOSIZE) ? (sg_dma_len(sg) / MCI_FIFOSIZE) + 1 : @@ -418,27 +434,6 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data) box->cmd |= CMD_DST_CRCI(crci); } box++; - sg++; - } - - /* location of command block must be 64 bit aligned */ - BUG_ON(host->dma.cmd_busaddr & 0x07); - - nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP; - host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST | - DMOV_CMD_ADDR(host->dma.cmdptr_busaddr); - host->dma.hdr.complete_func = msmsdcc_dma_complete_func; - - n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg, - host->dma.num_ents, host->dma.dir); -/* dsb inside dma_map_sg will write nc out to mem as well */ - - if (n != host->dma.num_ents) { - printk(KERN_ERR "%s: Unable to map in all sg elements\n", - mmc_hostname(host->mmc)); - host->dma.sg = NULL; - host->dma.num_ents = 0; - return -ENOMEM; } return 0; @@ -1331,9 +1326,6 @@ msmsdcc_probe(struct platform_device *pdev) if (host->timer.function) pr_info("%s: Polling status mode enabled\n", mmc_hostname(mmc)); -#if BUSCLK_PWRSAVE - msmsdcc_disable_clocks(host, 1); -#endif return 0; cmd_irq_free: free_irq(cmd_irqres->start, host); |