From: Jerome Brunet <jbrunet@baylibre.com>
To: Ulf Hansson <ulf.hansson@linaro.org>,
Kevin Hilman <khilman@baylibre.com>,
Carlo Caione <carlo@caione.org>
Cc: Jerome Brunet <jbrunet@baylibre.com>,
linux-mmc@vger.kernel.org, linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v3 09/13] mmc: meson-gx: implement card_busy callback
Date: Mon, 28 Aug 2017 16:29:11 +0200 [thread overview]
Message-ID: <20170828142915.27020-10-jbrunet@baylibre.com> (raw)
In-Reply-To: <20170828142915.27020-1-jbrunet@baylibre.com>
Implement the card_busy callback to be able to verify that the
card is done dealing with voltage switch, when the support is
added later on.
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
---
drivers/mmc/host/meson-gx-mmc.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 3914c3a82cc4..40fa7ae64c72 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -76,6 +76,7 @@
#define SD_EMMC_STATUS 0x48
#define STATUS_BUSY BIT(31)
+#define STATUS_DATI GENMASK(23, 16)
#define SD_EMMC_IRQ_EN 0x4c
#define IRQ_RXD_ERR_MASK GENMASK(7, 0)
@@ -902,6 +903,17 @@ static void meson_mmc_cfg_init(struct meson_host *host)
writel(cfg, host->regs + SD_EMMC_CFG);
}
+static int meson_mmc_card_busy(struct mmc_host *mmc)
+{
+ struct meson_host *host = mmc_priv(mmc);
+ u32 regval;
+
+ regval = readl(host->regs + SD_EMMC_STATUS);
+
+ /* We are only interrested in lines 0 to 3, so mask the other ones */
+ return !(FIELD_GET(STATUS_DATI, regval) & 0xf);
+}
+
static const struct mmc_host_ops meson_mmc_ops = {
.request = meson_mmc_request,
.set_ios = meson_mmc_set_ios,
@@ -909,6 +921,7 @@ static const struct mmc_host_ops meson_mmc_ops = {
.pre_req = meson_mmc_pre_req,
.post_req = meson_mmc_post_req,
.execute_tuning = meson_mmc_execute_tuning,
+ .card_busy = meson_mmc_card_busy,
};
static int meson_mmc_probe(struct platform_device *pdev)
--
2.9.5
WARNING: multiple messages have this Message-ID (diff)
From: jbrunet@baylibre.com (Jerome Brunet)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 09/13] mmc: meson-gx: implement card_busy callback
Date: Mon, 28 Aug 2017 16:29:11 +0200 [thread overview]
Message-ID: <20170828142915.27020-10-jbrunet@baylibre.com> (raw)
In-Reply-To: <20170828142915.27020-1-jbrunet@baylibre.com>
Implement the card_busy callback to be able to verify that the
card is done dealing with voltage switch, when the support is
added later on.
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
---
drivers/mmc/host/meson-gx-mmc.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 3914c3a82cc4..40fa7ae64c72 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -76,6 +76,7 @@
#define SD_EMMC_STATUS 0x48
#define STATUS_BUSY BIT(31)
+#define STATUS_DATI GENMASK(23, 16)
#define SD_EMMC_IRQ_EN 0x4c
#define IRQ_RXD_ERR_MASK GENMASK(7, 0)
@@ -902,6 +903,17 @@ static void meson_mmc_cfg_init(struct meson_host *host)
writel(cfg, host->regs + SD_EMMC_CFG);
}
+static int meson_mmc_card_busy(struct mmc_host *mmc)
+{
+ struct meson_host *host = mmc_priv(mmc);
+ u32 regval;
+
+ regval = readl(host->regs + SD_EMMC_STATUS);
+
+ /* We are only interrested in lines 0 to 3, so mask the other ones */
+ return !(FIELD_GET(STATUS_DATI, regval) & 0xf);
+}
+
static const struct mmc_host_ops meson_mmc_ops = {
.request = meson_mmc_request,
.set_ios = meson_mmc_set_ios,
@@ -909,6 +921,7 @@ static const struct mmc_host_ops meson_mmc_ops = {
.pre_req = meson_mmc_pre_req,
.post_req = meson_mmc_post_req,
.execute_tuning = meson_mmc_execute_tuning,
+ .card_busy = meson_mmc_card_busy,
};
static int meson_mmc_probe(struct platform_device *pdev)
--
2.9.5
WARNING: multiple messages have this Message-ID (diff)
From: jbrunet@baylibre.com (Jerome Brunet)
To: linus-amlogic@lists.infradead.org
Subject: [PATCH v3 09/13] mmc: meson-gx: implement card_busy callback
Date: Mon, 28 Aug 2017 16:29:11 +0200 [thread overview]
Message-ID: <20170828142915.27020-10-jbrunet@baylibre.com> (raw)
In-Reply-To: <20170828142915.27020-1-jbrunet@baylibre.com>
Implement the card_busy callback to be able to verify that the
card is done dealing with voltage switch, when the support is
added later on.
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
---
drivers/mmc/host/meson-gx-mmc.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 3914c3a82cc4..40fa7ae64c72 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -76,6 +76,7 @@
#define SD_EMMC_STATUS 0x48
#define STATUS_BUSY BIT(31)
+#define STATUS_DATI GENMASK(23, 16)
#define SD_EMMC_IRQ_EN 0x4c
#define IRQ_RXD_ERR_MASK GENMASK(7, 0)
@@ -902,6 +903,17 @@ static void meson_mmc_cfg_init(struct meson_host *host)
writel(cfg, host->regs + SD_EMMC_CFG);
}
+static int meson_mmc_card_busy(struct mmc_host *mmc)
+{
+ struct meson_host *host = mmc_priv(mmc);
+ u32 regval;
+
+ regval = readl(host->regs + SD_EMMC_STATUS);
+
+ /* We are only interrested in lines 0 to 3, so mask the other ones */
+ return !(FIELD_GET(STATUS_DATI, regval) & 0xf);
+}
+
static const struct mmc_host_ops meson_mmc_ops = {
.request = meson_mmc_request,
.set_ios = meson_mmc_set_ios,
@@ -909,6 +921,7 @@ static const struct mmc_host_ops meson_mmc_ops = {
.pre_req = meson_mmc_pre_req,
.post_req = meson_mmc_post_req,
.execute_tuning = meson_mmc_execute_tuning,
+ .card_busy = meson_mmc_card_busy,
};
static int meson_mmc_probe(struct platform_device *pdev)
--
2.9.5
next prev parent reply other threads:[~2017-08-28 14:29 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-28 14:29 [PATCH v3 00/13] mmc: meson-gx: driver fixups and upgrades Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 01/13] mmc: meson-gx: initialize sane clk default before clock register Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 02/13] mmc: meson-gx: cfg init overwrite values Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 03/13] mmc: meson-gx: rework set_ios function Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 04/13] mmc: meson-gx: rework clk_set function Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 05/13] mmc: meson-gx: rework clock init function Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 06/13] mmc: meson-gx: fix dual data rate mode frequencies Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 07/13] mmc: meson-gx: work around clk-stop issue Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 08/13] mmc: meson-gx: simplify interrupt handler Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet [this message]
2017-08-28 14:29 ` [PATCH v3 09/13] mmc: meson-gx: implement card_busy callback Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 10/13] mmc: meson-gx: use CCF to handle the clock phases Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 11/13] mmc: meson-gx: implement voltage switch callback Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 12/13] mmc: meson-gx: change default tx phase Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` [PATCH v3 13/13] mmc: meson-gx: rework tuning function Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-28 14:29 ` Jerome Brunet
2017-08-30 13:13 ` [PATCH v3 00/13] mmc: meson-gx: driver fixups and upgrades Ulf Hansson
2017-08-30 13:13 ` Ulf Hansson
2017-08-30 13:13 ` Ulf Hansson
2017-08-30 13:13 ` Ulf Hansson
2017-08-30 19:03 ` Kevin Hilman
2017-08-30 19:03 ` Kevin Hilman
2017-08-30 19:03 ` Kevin Hilman
2017-08-30 19:03 ` Kevin Hilman
2017-08-31 10:46 ` Ulf Hansson
2017-08-31 10:46 ` Ulf Hansson
2017-08-31 10:46 ` Ulf Hansson
2017-08-31 10:46 ` Ulf Hansson
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