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[2a01:c22:721d:8f00:f22f:74ff:fe21:725]) by smtp.googlemail.com with ESMTPSA id d2sm9262020wrw.26.2021.12.19.07.34.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Dec 2021 07:34:54 -0800 (PST) From: Martin Blumenstingl To: linux-mmc@vger.kernel.org, linux-amlogic@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, ulf.hansson@linaro.org, Martin Blumenstingl Subject: [PATCH v2 1/2] mmc: meson-mx-sdhc: Set MANUAL_STOP for multi-block SDIO commands Date: Sun, 19 Dec 2021 16:34:41 +0100 Message-Id: <20211219153442.463863-2-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211219153442.463863-1-martin.blumenstingl@googlemail.com> References: <20211219153442.463863-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org 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: e4bf1b0970ef96 ("mmc: host: meson-mx-sdhc: new driver for the Amlogic Meson SDHC host") Signed-off-by: Martin Blumenstingl --- drivers/mmc/host/meson-mx-sdhc-mmc.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/mmc/host/meson-mx-sdhc-mmc.c b/drivers/mmc/host/meson-mx-sdhc-mmc.c index 7cd9c0ec2fcf..8fdd0bbbfa21 100644 --- a/drivers/mmc/host/meson-mx-sdhc-mmc.c +++ b/drivers/mmc/host/meson-mx-sdhc-mmc.c @@ -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;