Hi, Ulf. Acked-by: Jaehoon Chung <[email protected]>
And if you can apply "[PATCH] mmc: dw_mmc: Generate stop commands for failed tuning requests", plz do it with my-ack. Best Regards, Jaehoon Chung On 12/24/2014 01:02 AM, Ulf Hansson wrote: > Instead of having a local hack taking care of sending the tuning > command and as well to verify the response pattern, let's convert to > the common mmc_send_tuning() API. > > This change affects the Exynos variant, since it's the only one which > support the dw_mmc's ->execute_tuning() callback. > > Signed-off-by: Ulf Hansson <[email protected]> > --- > > Changes in v3: > Fix return value from dw_mci_exynos_execute_tuning() according to > comment from Jaehoon Chung. > > --- > drivers/mmc/host/dw_mmc-exynos.c | 48 > +++------------------------------------- > drivers/mmc/host/dw_mmc.c | 22 +----------------- > drivers/mmc/host/dw_mmc.h | 8 +------ > 3 files changed, 5 insertions(+), 73 deletions(-) > > diff --git a/drivers/mmc/host/dw_mmc-exynos.c > b/drivers/mmc/host/dw_mmc-exynos.c > index 74eb081..12a5eaa 100644 > --- a/drivers/mmc/host/dw_mmc-exynos.c > +++ b/drivers/mmc/host/dw_mmc-exynos.c > @@ -340,64 +340,23 @@ out: > return loc; > } > > -static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot, u32 opcode, > - struct dw_mci_tuning_data *tuning_data) > +static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot) > { > struct dw_mci *host = slot->host; > struct mmc_host *mmc = slot->mmc; > - const u8 *blk_pattern = tuning_data->blk_pattern; > - u8 *blk_test; > - unsigned int blksz = tuning_data->blksz; > u8 start_smpl, smpl, candiates = 0; > s8 found = -1; > int ret = 0; > > - blk_test = kmalloc(blksz, GFP_KERNEL); > - if (!blk_test) > - return -ENOMEM; > - > start_smpl = dw_mci_exynos_get_clksmpl(host); > > do { > - struct mmc_request mrq = {NULL}; > - struct mmc_command cmd = {0}; > - struct mmc_command stop = {0}; > - struct mmc_data data = {0}; > - struct scatterlist sg; > - > - cmd.opcode = opcode; > - cmd.arg = 0; > - cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; > - > - stop.opcode = MMC_STOP_TRANSMISSION; > - stop.arg = 0; > - stop.flags = MMC_RSP_R1B | MMC_CMD_AC; > - > - data.blksz = blksz; > - data.blocks = 1; > - data.flags = MMC_DATA_READ; > - data.sg = &sg; > - data.sg_len = 1; > - > - sg_init_one(&sg, blk_test, blksz); > - mrq.cmd = &cmd; > - mrq.stop = &stop; > - mrq.data = &data; > - host->mrq = &mrq; > - > mci_writel(host, TMOUT, ~0); > smpl = dw_mci_exynos_move_next_clksmpl(host); > > - mmc_wait_for_req(mmc, &mrq); > + if (!mmc_send_tuning(mmc)) > + candiates |= (1 << smpl); > > - if (!cmd.error && !data.error) { > - if (!memcmp(blk_pattern, blk_test, blksz)) > - candiates |= (1 << smpl); > - } else { > - dev_dbg(host->dev, > - "Tuning error: cmd.error:%d, data.error:%d\n", > - cmd.error, data.error); > - } > } while (start_smpl != smpl); > > found = dw_mci_exynos_get_best_clksmpl(candiates); > @@ -406,7 +365,6 @@ static int dw_mci_exynos_execute_tuning(struct > dw_mci_slot *slot, u32 opcode, > else > ret = -EIO; > > - kfree(blk_test); > return ret; > } > > diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c > index 6e4d864..88dc50f 100644 > --- a/drivers/mmc/host/dw_mmc.c > +++ b/drivers/mmc/host/dw_mmc.c > @@ -1312,30 +1312,10 @@ static int dw_mci_execute_tuning(struct mmc_host > *mmc, u32 opcode) > struct dw_mci_slot *slot = mmc_priv(mmc); > struct dw_mci *host = slot->host; > const struct dw_mci_drv_data *drv_data = host->drv_data; > - struct dw_mci_tuning_data tuning_data; > int err = -ENOSYS; > > - if (opcode == MMC_SEND_TUNING_BLOCK_HS200) { > - if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) { > - tuning_data.blk_pattern = tuning_blk_pattern_8bit; > - tuning_data.blksz = sizeof(tuning_blk_pattern_8bit); > - } else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) { > - tuning_data.blk_pattern = tuning_blk_pattern_4bit; > - tuning_data.blksz = sizeof(tuning_blk_pattern_4bit); > - } else { > - return -EINVAL; > - } > - } else if (opcode == MMC_SEND_TUNING_BLOCK) { > - tuning_data.blk_pattern = tuning_blk_pattern_4bit; > - tuning_data.blksz = sizeof(tuning_blk_pattern_4bit); > - } else { > - dev_err(host->dev, > - "Undefined command(%d) for tuning\n", opcode); > - return -EINVAL; > - } > - > if (drv_data && drv_data->execute_tuning) > - err = drv_data->execute_tuning(slot, opcode, &tuning_data); > + err = drv_data->execute_tuning(slot); > return err; > } > > diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h > index d27d4c0..18c4afe 100644 > --- a/drivers/mmc/host/dw_mmc.h > +++ b/drivers/mmc/host/dw_mmc.h > @@ -249,11 +249,6 @@ struct dw_mci_slot { > int sdio_id; > }; > > -struct dw_mci_tuning_data { > - const u8 *blk_pattern; > - unsigned int blksz; > -}; > - > /** > * dw_mci driver data - dw-mshc implementation specific driver data. > * @caps: mmc subsystem specified capabilities of the controller(s). > @@ -275,7 +270,6 @@ struct dw_mci_drv_data { > void (*prepare_command)(struct dw_mci *host, u32 *cmdr); > void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios); > int (*parse_dt)(struct dw_mci *host); > - int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode, > - struct dw_mci_tuning_data *tuning_data); > + int (*execute_tuning)(struct dw_mci_slot *slot); > }; > #endif /* _DW_MMC_H_ */ > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
