64 lines
2.1 KiB
Diff
64 lines
2.1 KiB
Diff
From 43f1e05b9b660d3d4763ebc406ef5ea667ba64f9 Mon Sep 17 00:00:00 2001
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From: Tobias Schramm <t.schramm@manjaro.org>
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Date: Thu, 28 May 2020 14:16:52 +0200
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Subject: [PATCH 4/8] mmc: core: pwrseq_simple: disable mmc power on shutdown
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Fix for Broadcom SDIO WiFi modules. They misbehave if reinitialized
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without a power cycle.
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Signed-off-by: Tobias Schramm <t.schramm@manjaro.org>
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---
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drivers/mmc/core/pwrseq_simple.c | 19 ++++++++++++++++---
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1 file changed, 16 insertions(+), 3 deletions(-)
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diff --git a/drivers/mmc/core/pwrseq_simple.c b/drivers/mmc/core/pwrseq_simple.c
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index ea4d3670560e..38fe7e29aba6 100644
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--- a/drivers/mmc/core/pwrseq_simple.c
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+++ b/drivers/mmc/core/pwrseq_simple.c
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@@ -80,10 +80,8 @@ static void mmc_pwrseq_simple_post_power_on(struct mmc_host *host)
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msleep(pwrseq->post_power_on_delay_ms);
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}
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-static void mmc_pwrseq_simple_power_off(struct mmc_host *host)
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+static void __mmc_pwrseq_simple_power_off(struct mmc_pwrseq_simple *pwrseq)
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{
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- struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);
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-
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mmc_pwrseq_simple_set_gpios_value(pwrseq, 1);
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if (pwrseq->power_off_delay_us)
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@@ -96,6 +94,12 @@ static void mmc_pwrseq_simple_power_off(struct mmc_host *host)
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}
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}
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+static void mmc_pwrseq_simple_power_off(struct mmc_host *host)
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+{
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+ struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);
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+ __mmc_pwrseq_simple_power_off(pwrseq);
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+}
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+
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static const struct mmc_pwrseq_ops mmc_pwrseq_simple_ops = {
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.pre_power_on = mmc_pwrseq_simple_pre_power_on,
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.post_power_on = mmc_pwrseq_simple_post_power_on,
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@@ -151,9 +155,18 @@ static int mmc_pwrseq_simple_remove(struct platform_device *pdev)
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return 0;
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}
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+static void mmc_pwrseq_simple_shutdown(struct platform_device *pdev)
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+{
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+ struct mmc_pwrseq_simple *pwrseq = platform_get_drvdata(pdev);
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+
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+ dev_info(&pdev->dev, "Turning off mmc\n");
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+ __mmc_pwrseq_simple_power_off(pwrseq);
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+}
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+
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static struct platform_driver mmc_pwrseq_simple_driver = {
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.probe = mmc_pwrseq_simple_probe,
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.remove = mmc_pwrseq_simple_remove,
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+ .shutdown = mmc_pwrseq_simple_shutdown,
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.driver = {
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.name = "pwrseq_simple",
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.of_match_table = mmc_pwrseq_simple_of_match,
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--
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2.28.0
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