mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

mmc: meson-gx: fix SDIO mode if cap_sdio_irq isn't set 

Some SDIO WiFi modules stopped working after SDIO interrupt mode
was added if cap_sdio_irq isn't set in device tree. This patch was
confirmed to fix the issue.

Fixes: 066ecde6d8 ("mmc: meson-gx: add SDIO interrupt support")
Reported-by: Geraldo Nascimento <geraldogabriel@gmail.com>
Tested-by: Geraldo Nascimento <geraldogabriel@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/816cba9f-ff92-31a2-60f0-aca542d1d13e@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Heiner Kallweit 2023-02-13 21:55:56 +01:00 committed by Ulf Hansson
parent 2241ab53cb
commit 6ea6b95a7e
1 changed files with 13 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/mmc/host/meson-gx-mmc.c
View File

@ -435,7 +435,8 @@ static int meson_mmc_clk_init(struct meson_host *host)
clk_reg |= FIELD_PREP(CLK_CORE_PHASE_MASK, CLK_PHASE_180);
clk_reg |= FIELD_PREP(CLK_TX_PHASE_MASK, CLK_PHASE_0);
clk_reg |= FIELD_PREP(CLK_RX_PHASE_MASK, CLK_PHASE_0);
clk_reg |= CLK_IRQ_SDIO_SLEEP(host);
if (host->mmc->caps & MMC_CAP_SDIO_IRQ)
clk_reg |= CLK_IRQ_SDIO_SLEEP(host);
writel(clk_reg, host->regs + SD_EMMC_CLOCK);
/* get the mux parents */
@ -948,16 +949,18 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
{
struct meson_host *host = dev_id;
struct mmc_command *cmd;
u32 status, raw_status;
u32 status, raw_status, irq_mask = IRQ_EN_MASK;
irqreturn_t ret = IRQ_NONE;
if (host->mmc->caps & MMC_CAP_SDIO_IRQ)
irq_mask |= IRQ_SDIO;
raw_status = readl(host->regs + SD_EMMC_STATUS);
status = raw_status & (IRQ_EN_MASK | IRQ_SDIO);
status = raw_status & irq_mask;
if (!status) {
dev_dbg(host->dev,
"Unexpected IRQ! irq_en 0x%08lx - status 0x%08x\n",
IRQ_EN_MASK | IRQ_SDIO, raw_status);
"Unexpected IRQ! irq_en 0x%08x - status 0x%08x\n",
irq_mask, raw_status);
return IRQ_NONE;
}
@ -1204,6 +1207,11 @@ static int meson_mmc_probe(struct platform_device *pdev)
goto free_host;
}
mmc->caps |= MMC_CAP_CMD23;
if (mmc->caps & MMC_CAP_SDIO_IRQ)
mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
host->data = (struct meson_mmc_data *)
of_device_get_match_data(&pdev->dev);
if (!host->data) {
@ -1277,11 +1285,6 @@ static int meson_mmc_probe(struct platform_device *pdev)
spin_lock_init(&host->lock);
mmc->caps |= MMC_CAP_CMD23;
if (mmc->caps & MMC_CAP_SDIO_IRQ)
mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
if (host->dram_access_quirk) {
/* Limit segments to 1 due to low available sram memory */
mmc->max_segs = 1;