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From: Simon Horman <horms+renesas@verge.net.au>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Ulf Hansson <ulf.hansson@linaro.org>
Cc: Magnus Damm <magnus.damm@gmail.com>,
	linux-mmc@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	Ai Kyuse <ai.kyuse.uw@renesas.com>,
	Simon Horman <horms+renesas@verge.net.au>
Subject: [PATCH v7 4/6] mmc: tmio: Add hw reset support
Date: Tue, 13 Sep 2016 12:56:13 +0200	[thread overview]
Message-ID: <1473764175-24580-5-git-send-email-horms+renesas@verge.net.au> (raw)
In-Reply-To: <1473764175-24580-1-git-send-email-horms+renesas@verge.net.au>

From: Ai Kyuse <ai.kyuse.uw@renesas.com>

Add hw reset support.

Signed-off-by: Ai Kyuse <ai.kyuse.uw@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
This is required by tuning support which will
be introduced by follow-up patches.

v6
* Rely on core to retune on reset

v5
* As suggested by Ulf Hansson
  - Broke out of a larger patch
---
 drivers/mmc/host/tmio_mmc.h     | 1 +
 drivers/mmc/host/tmio_mmc_pio.c | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index 4b36cb5c2d9c..4b71f31fba63 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -164,6 +164,7 @@ struct tmio_mmc_host {
 	int (*start_signal_voltage_switch)(struct mmc_host *mmc,
 					   struct mmc_ios *ios);
 	int (*write16_hook)(struct tmio_mmc_host *host, int addr);
+	void (*hw_reset)(struct tmio_mmc_host *host);
 };
 
 struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev);
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 806308ac93e7..f1d36f4533d2 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -756,6 +756,14 @@ static int tmio_mmc_start_data(struct tmio_mmc_host *host,
 	return 0;
 }
 
+static void tmio_mmc_hw_reset(struct mmc_host *mmc)
+{
+	struct tmio_mmc_host *host = mmc_priv(mmc);
+
+	if (host->hw_reset)
+		host->hw_reset(host);
+}
+
 /* Process requests from the MMC layer */
 static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
 {
@@ -970,6 +978,7 @@ static struct mmc_host_ops tmio_mmc_ops = {
 	.get_cd		= mmc_gpio_get_cd,
 	.enable_sdio_irq = tmio_mmc_enable_sdio_irq,
 	.multi_io_quirk	= tmio_multi_io_quirk,
+	.hw_reset	= tmio_mmc_hw_reset,
 };
 
 static int tmio_mmc_init_ocr(struct tmio_mmc_host *host)
-- 
2.7.0.rc3.207.g0ac5344

  parent reply	other threads:[~2016-09-13 10:56 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-13 10:56 [PATCH v7 0/6] UHS-I SDR-104 support for sh_mobile_sdhi Simon Horman
2016-09-13 10:56 ` [PATCH v7 1/6] mmc: core: Add helper to see if a host can be retuned Simon Horman
2016-09-13 10:56 ` [PATCH v7 2/6] mmc: tmio: enhance illegal sequence handling Simon Horman
2016-09-13 10:56 ` [PATCH v7 3/6] mmc: tmio: document mandatory and optional callbacks Simon Horman
2016-09-13 10:56 ` Simon Horman [this message]
2016-09-13 10:56 ` [PATCH v7 5/6] mmc: tmio: Add tuning support Simon Horman
2016-09-13 10:56 ` [PATCH v7 6/6] mmc: sh_mobile_sdhi: " Simon Horman
2016-09-14  8:53   ` Simon Horman
2016-09-13 12:48 ` [PATCH v7 0/6] UHS-I SDR-104 support for sh_mobile_sdhi Ulf Hansson
2016-09-13 12:58   ` Wolfram Sang
2016-09-14  8:54     ` Simon Horman
2016-09-14 16:04   ` Wolfram Sang

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