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mmc: meson-mx-sdhc: Set MANUAL_STOP for multi-block SDIO commands

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The vendor driver implements special handling for multi-block
SD_IO_RW_EXTENDED (and SD_IO_RW_DIRECT) commands which have data
attached to them. It sets the MANUAL_STOP bit in the MESON_SDHC_MISC
register for these commands. In all other cases this bit is cleared.
Here we omit SD_IO_RW_DIRECT since that command never has any data
attached to it.

This fixes SDIO wifi using the brcmfmac driver which reported the
following error without this change on a Netxeon S82 board using a
Meson8 (S802) SoC:
  brcmf_fw_alloc_request: using brcm/brcmfmac43362-sdio for chip
                          BCM43362/1
  brcmf_sdiod_ramrw: membytes transfer failed
  brcmf_sdio_download_code_file: error -110 on writing 219557 membytes
                                 at 0x00000000
  brcmf_sdio_download_firmware: dongle image file download failed

And with this change:
  brcmf_fw_alloc_request: using brcm/brcmfmac43362-sdio for chip
                          BCM43362/1
  brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may
                            have limited channels available
  brcmf_c_preinit_dcmds: Firmware: BCM43362/1 wl0: Apr 22 2013 14:50:00
                         version 5.90.195.89.6 FWID 01-b30a427d

Fixes: e4bf1b0970 ("mmc: host: meson-mx-sdhc: new driver for the Amlogic Meson SDHC host")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211219153442.463863-2-martin.blumenstingl@googlemail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Martin Blumenstingl 2021-12-19 16:34:41 +01:00 committed by Ulf Hansson
parent 66c915d09b
commit f89b548ca6
1 changed files with 16 additions and 0 deletions
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16
drivers/mmc/host/meson-mx-sdhc-mmc.c
View file

@ -135,6 +135,7 @@ static void meson_mx_sdhc_start_cmd(struct mmc_host *mmc,
struct mmc_command *cmd)
{
struct meson_mx_sdhc_host *host = mmc_priv(mmc);
bool manual_stop = false;
u32 ictl, send;
int pack_len;
@ -172,12 +173,27 @@ static void meson_mx_sdhc_start_cmd(struct mmc_host *mmc,
else
/* software flush: */
ictl |= MESON_SDHC_ICTL_DATA_XFER_OK;
/*
* Mimic the logic from the vendor driver where (only)
* SD_IO_RW_EXTENDED commands with more than one block set the
* MESON_SDHC_MISC_MANUAL_STOP bit. This fixes the firmware
* download in the brcmfmac driver for a BCM43362/1 card.
* Without this sdio_memcpy_toio() (with a size of 219557
* bytes) times out if MESON_SDHC_MISC_MANUAL_STOP is not set.
*/
manual_stop = cmd->data->blocks > 1 &&
cmd->opcode == SD_IO_RW_EXTENDED;
} else {
pack_len = 0;
ictl |= MESON_SDHC_ICTL_RESP_OK;
}
regmap_update_bits(host->regmap, MESON_SDHC_MISC,
MESON_SDHC_MISC_MANUAL_STOP,
manual_stop ? MESON_SDHC_MISC_MANUAL_STOP : 0);
if (cmd->opcode == MMC_STOP_TRANSMISSION)
send |= MESON_SDHC_SEND_DATA_STOP;