From: Victor Shih <victorshihgli@gmail.com>
To: ulf.hansson@linaro.org, adrian.hunter@intel.com
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
benchuanggli@gmail.com, HL.Liu@genesyslogic.com.tw,
Greg.tu@genesyslogic.com.tw, takahiro.akashi@linaro.org,
dlunev@chromium.org,
Victor Shih <victor.shih@genesyslogic.com.tw>,
Ben Chuang <ben.chuang@genesyslogic.com.tw>
Subject: [PATCH V5 15/26] mmc: sdhci-uhs2: add set_ios()
Date: Fri, 14 Oct 2022 19:45:50 +0800 [thread overview]
Message-ID: <20221014114601.15594-16-victor.shih@genesyslogic.com.tw> (raw)
In-Reply-To: <20221014114601.15594-1-victor.shih@genesyslogic.com.tw>
This is a sdhci version of mmc's set_ios operation.
It covers both UHS-I and UHS-II.
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Victor Shih <victor.shih@genesyslogic.com.tw>
---
drivers/mmc/host/sdhci-uhs2.c | 102 ++++++++++++++++++++++++++++++++++
drivers/mmc/host/sdhci-uhs2.h | 1 +
drivers/mmc/host/sdhci.c | 40 ++++++++-----
drivers/mmc/host/sdhci.h | 2 +
4 files changed, 130 insertions(+), 15 deletions(-)
diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c
index 2b90e5308764..b535a47dc55a 100644
--- a/drivers/mmc/host/sdhci-uhs2.c
+++ b/drivers/mmc/host/sdhci-uhs2.c
@@ -281,6 +281,74 @@ void sdhci_uhs2_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
}
EXPORT_SYMBOL_GPL(sdhci_uhs2_set_timeout);
+/**
+ * sdhci_uhs2_clear_set_irqs - set Error Interrupt Status Enable register
+ * @host: SDHCI host
+ * @clear: bit-wise clear mask
+ * @set: bit-wise set mask
+ *
+ * Set/unset bits in UHS-II Error Interrupt Status Enable register
+ */
+void sdhci_uhs2_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set)
+{
+ u32 ier;
+
+ ier = sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS_EN);
+ ier &= ~clear;
+ ier |= set;
+ sdhci_writel(host, ier, SDHCI_UHS2_ERR_INT_STATUS_EN);
+ sdhci_writel(host, ier, SDHCI_UHS2_ERR_INT_SIG_EN);
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_clear_set_irqs);
+
+static void __sdhci_uhs2_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ u8 cmd_res, dead_lock;
+ u16 ctrl_2;
+ unsigned long flags;
+
+ /* FIXME: why lock? */
+ spin_lock_irqsave(&host->lock, flags);
+
+ /* UHS2 Timeout Control */
+ sdhci_calc_timeout_uhs2(host, &cmd_res, &dead_lock);
+
+ /* change to use calculate value */
+ cmd_res |= dead_lock << SDHCI_UHS2_TIMER_CTRL_DEADLOCK_SHIFT;
+
+ sdhci_uhs2_clear_set_irqs(host,
+ SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT |
+ SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT,
+ 0);
+ sdhci_writeb(host, cmd_res, SDHCI_UHS2_TIMER_CTRL);
+ sdhci_uhs2_clear_set_irqs(host, 0,
+ SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT |
+ SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT);
+
+ /* UHS2 timing */
+ ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ if (ios->timing == MMC_TIMING_SD_UHS2)
+ ctrl_2 |= SDHCI_CTRL_UHS_2 | SDHCI_CTRL_UHS2_INTERFACE_EN;
+ else
+ ctrl_2 &= ~(SDHCI_CTRL_UHS_2 | SDHCI_CTRL_UHS2_INTERFACE_EN);
+ sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
+
+ if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN))
+ sdhci_enable_preset_value(host, true);
+
+ if (host->ops->set_power)
+ host->ops->set_power(host, ios->power_mode, ios->vdd);
+ else
+ sdhci_uhs2_set_power(host, ios->power_mode, ios->vdd);
+ udelay(100);
+
+ host->timing = ios->timing;
+ sdhci_set_clock(host, host->clock);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
/*****************************************************************************\
* *
* MMC callbacks *
@@ -302,6 +370,39 @@ static int sdhci_uhs2_start_signal_voltage_switch(struct mmc_host *mmc,
return sdhci_start_signal_voltage_switch(mmc, ios);
}
+int sdhci_uhs2_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+
+ if (!(host->version >= SDHCI_SPEC_400) ||
+ !(host->mmc->flags & MMC_UHS2_SUPPORT &&
+ host->mmc->caps2 & MMC_CAP2_SD_UHS2)) {
+ sdhci_set_ios(mmc, ios);
+ return 0;
+ }
+
+ if (ios->power_mode == MMC_POWER_UNDEFINED)
+ return 1;
+
+ if (host->flags & SDHCI_DEVICE_DEAD) {
+ if (!IS_ERR(mmc->supply.vmmc) &&
+ ios->power_mode == MMC_POWER_OFF)
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
+ if (!IS_ERR_OR_NULL(mmc->supply.vmmc2) &&
+ ios->power_mode == MMC_POWER_OFF)
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc2, 0);
+ return 1;
+ }
+
+ /* FIXME: host->timing = ios->timing */
+
+ sdhci_set_ios_common(mmc, ios);
+
+ __sdhci_uhs2_set_ios(mmc, ios);
+
+ return 0;
+}
+
/*****************************************************************************\
* *
* Driver init/exit *
@@ -312,6 +413,7 @@ static int sdhci_uhs2_host_ops_init(struct sdhci_host *host)
{
host->mmc_host_ops.start_signal_voltage_switch =
sdhci_uhs2_start_signal_voltage_switch;
+ host->mmc_host_ops.uhs2_set_ios = sdhci_uhs2_set_ios;
return 0;
}
diff --git a/drivers/mmc/host/sdhci-uhs2.h b/drivers/mmc/host/sdhci-uhs2.h
index 5ea235b14108..23368448ccd4 100644
--- a/drivers/mmc/host/sdhci-uhs2.h
+++ b/drivers/mmc/host/sdhci-uhs2.h
@@ -216,5 +216,6 @@ void sdhci_uhs2_reset(struct sdhci_host *host, u16 mask);
void sdhci_uhs2_set_power(struct sdhci_host *host, unsigned char mode,
unsigned short vdd);
void sdhci_uhs2_set_timeout(struct sdhci_host *host, struct mmc_command *cmd);
+void sdhci_uhs2_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set);
#endif /* __SDHCI_UHS2_H */
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 509e34f46659..af4c7549f7c0 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -47,8 +47,6 @@
static unsigned int debug_quirks = 0;
static unsigned int debug_quirks2;
-static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
-
static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd);
void sdhci_dumpregs(struct sdhci_host *host)
@@ -1853,6 +1851,9 @@ static u16 sdhci_get_preset_value(struct sdhci_host *host)
case MMC_TIMING_MMC_HS400:
preset = sdhci_readw(host, SDHCI_PRESET_FOR_HS400);
break;
+ case MMC_TIMING_SD_UHS2:
+ preset = sdhci_readw(host, SDHCI_PRESET_FOR_UHS2);
+ break;
default:
pr_warn("%s: Invalid UHS-I mode selected\n",
mmc_hostname(host->mmc));
@@ -2270,20 +2271,9 @@ void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
}
EXPORT_SYMBOL_GPL(sdhci_set_uhs_signaling);
-void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+void sdhci_set_ios_common(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
- u8 ctrl;
-
- if (ios->power_mode == MMC_POWER_UNDEFINED)
- return;
-
- if (host->flags & SDHCI_DEVICE_DEAD) {
- if (!IS_ERR(mmc->supply.vmmc) &&
- ios->power_mode == MMC_POWER_OFF)
- mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
- return;
- }
/*
* Reset the chip on each power off.
@@ -2320,6 +2310,25 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
host->ops->set_power(host, ios->power_mode, ios->vdd);
else
sdhci_set_power(host, ios->power_mode, ios->vdd);
+}
+EXPORT_SYMBOL_GPL(sdhci_set_ios_common);
+
+void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ u8 ctrl;
+
+ if (ios->power_mode == MMC_POWER_UNDEFINED)
+ return;
+
+ if (host->flags & SDHCI_DEVICE_DEAD) {
+ if (!IS_ERR(mmc->supply.vmmc) &&
+ ios->power_mode == MMC_POWER_OFF)
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
+ return;
+ }
+
+ sdhci_set_ios_common(mmc, ios);
if (host->ops->platform_send_init_74_clocks)
host->ops->platform_send_init_74_clocks(host, ios->power_mode);
@@ -2909,7 +2918,7 @@ int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
}
EXPORT_SYMBOL_GPL(sdhci_execute_tuning);
-static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
+void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
{
/* Host Controller v3.00 defines preset value registers */
if (host->version < SDHCI_SPEC_300)
@@ -2937,6 +2946,7 @@ static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
host->preset_enabled = enable;
}
}
+EXPORT_SYMBOL_GPL(sdhci_enable_preset_value);
static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
int err)
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 0d34ff4dca4e..dca08aac076d 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -873,6 +873,8 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width);
void sdhci_reset(struct sdhci_host *host, u8 mask);
void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
+void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
+void sdhci_set_ios_common(struct mmc_host *mmc, struct mmc_ios *ios);
void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios);
--
2.25.1
next prev parent reply other threads:[~2022-10-14 11:49 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-14 11:45 [PATCH V5 00/26] Add support UHS-II for GL9755 Victor Shih
2022-10-14 11:45 ` [PATCH V5 01/26] mmc: core: Cleanup printing of speed mode at card insertion Victor Shih
2022-10-14 11:45 ` [PATCH V5 02/26] mmc: core: Prepare to support SD UHS-II cards Victor Shih
2022-10-14 11:45 ` [PATCH V5 03/26] mmc: core: Announce successful insertion of an SD UHS-II card Victor Shih
2022-10-14 11:45 ` [PATCH V5 04/26] mmc: core: Extend support for mmc regulators with a vqmmc2 Victor Shih
2022-10-14 11:45 ` [PATCH V5 05/26] mmc: core: Add definitions for SD UHS-II cards Victor Shih
2022-10-14 11:45 ` [PATCH V5 06/26] mmc: core: Support UHS-II card control and access Victor Shih
2022-10-14 11:45 ` [PATCH V5 07/26] mmc: sdhci: add a kernel configuration for enabling UHS-II support Victor Shih
2022-10-14 11:45 ` [PATCH V5 08/26] mmc: sdhci: add UHS-II related definitions in headers Victor Shih
2022-10-14 11:45 ` [PATCH V5 09/26] mmc: sdhci: add UHS-II module Victor Shih
2022-10-14 11:45 ` [PATCH V5 10/26] mmc: sdhci-uhs2: dump UHS-II registers Victor Shih
2022-10-14 11:45 ` [PATCH V5 11/26] mmc: sdhci-uhs2: add reset function and uhs2_mode function Victor Shih
2022-10-14 11:45 ` [PATCH V5 12/26] mmc: sdhci-uhs2: add set_power() to support vdd2 Victor Shih
2022-10-14 11:45 ` [PATCH V5 13/26] mmc: sdhci-uhs2: skip signal_voltage_switch() Victor Shih
2022-10-14 11:45 ` [PATCH V5 14/26] mmc: sdhci-uhs2: add set_timeout() Victor Shih
2022-10-14 11:45 ` Victor Shih [this message]
2022-10-14 11:45 ` [PATCH V5 16/26] mmc: sdhci-uhs2: add detect_init() to detect the interface Victor Shih
2022-10-14 11:45 ` [PATCH V5 17/26] mmc: sdhci-uhs2: add clock operations Victor Shih
2022-10-14 11:45 ` [PATCH V5 18/26] mmc: sdhci-uhs2: add uhs2_control() to initialise the interface Victor Shih
2022-10-14 11:45 ` [PATCH V5 19/26] mmc: sdhci-uhs2: add request() and others Victor Shih
2022-10-14 11:45 ` [PATCH V5 20/26] mmc: sdhci-uhs2: add irq() " Victor Shih
2022-10-14 11:45 ` [PATCH V5 21/26] mmc: sdhci-uhs2: add add_host() and others to set up the driver Victor Shih
2022-10-14 11:45 ` [PATCH V5 22/26] mmc: sdhci-uhs2: add pre-detect_init hook Victor Shih
2022-10-14 11:45 ` [PATCH V5 23/26] mmc: core: add post-mmc_attach_sd hook Victor Shih
2022-10-14 11:45 ` [PATCH V5 24/26] mmc: sdhci-uhs2: " Victor Shih
2022-10-14 11:46 ` [PATCH V5 25/26] mmc: sdhci-pci: add UHS-II support framework Victor Shih
2022-10-14 11:46 ` [PATCH V5 26/26] mmc: sdhci-pci-gli: enable UHS-II mode for GL9755 Victor Shih
2022-10-17 11:31 ` [PATCH V5 00/26] Add support UHS-II " Ulf Hansson
2022-10-19 11:02 ` Victor Shih
2022-10-17 9:11 Victor Shih
2022-10-17 9:11 ` [PATCH V5 15/26] mmc: sdhci-uhs2: add set_ios() Victor Shih
2022-10-19 11:06 [PATCH V5 00/26] Add support UHS-II for GL9755 Victor Shih
2022-10-19 11:06 ` [PATCH V5 15/26] mmc: sdhci-uhs2: add set_ios() Victor Shih
2022-11-01 17:14 ` Adrian Hunter
2022-12-13 8:46 ` Victor Shih
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221014114601.15594-16-victor.shih@genesyslogic.com.tw \
--to=victorshihgli@gmail.com \
--cc=Greg.tu@genesyslogic.com.tw \
--cc=HL.Liu@genesyslogic.com.tw \
--cc=adrian.hunter@intel.com \
--cc=ben.chuang@genesyslogic.com.tw \
--cc=benchuanggli@gmail.com \
--cc=dlunev@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=takahiro.akashi@linaro.org \
--cc=ulf.hansson@linaro.org \
--cc=victor.shih@genesyslogic.com.tw \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).