* [RFC PATCH v2 1/6] mmc: Add UHS-II support in public headers
2020-01-09 9:13 [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
@ 2020-01-09 9:14 ` Ben Chuang
2020-01-09 9:14 ` [RFC PATCH v2 2/6] mmc: core: Add UHS-II support in core layer Ben Chuang
` (5 subsequent siblings)
6 siblings, 0 replies; 12+ messages in thread
From: Ben Chuang @ 2020-01-09 9:14 UTC (permalink / raw)
To: adrian.hunter, ulf.hansson
Cc: linux-mmc, linux-kernel, greg.tu, ben.chuang, Ben Chuang
From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Add UHS-II support in public headers
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
---
include/linux/mmc/card.h | 1 +
include/linux/mmc/core.h | 6 ++++++
include/linux/mmc/host.h | 30 ++++++++++++++++++++++++++++++
3 files changed, 37 insertions(+)
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index cf3780a6ccc4..988f46638317 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -180,6 +180,7 @@ struct sd_switch_caps {
#define SD_SET_CURRENT_LIMIT_400 1
#define SD_SET_CURRENT_LIMIT_600 2
#define SD_SET_CURRENT_LIMIT_800 3
+#define SD_SET_CURRENT_LIMIT_1000 4
#define SD_SET_CURRENT_NO_CHANGE (-1)
#define SD_MAX_CURRENT_200 (1 << SD_SET_CURRENT_LIMIT_200)
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index b7ba8810a3b5..cd294a1c31c6 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -7,6 +7,7 @@
#include <linux/completion.h>
#include <linux/types.h>
+#include <linux/mmc/uhs2.h>
struct mmc_data;
struct mmc_request;
@@ -112,6 +113,11 @@ struct mmc_command {
struct mmc_data *data; /* data segment associated with cmd */
struct mmc_request *mrq; /* associated request */
+
+ struct uhs2_command *uhs2_cmd; /* UHS2 command */
+ u8 *uhs2_resp; /* UHS2 native cmd resp */
+ u8 uhs2_resp_len; /* UHS2 native cmd resp len */
+ u8 uhs2_tmode0_flag; /* UHS2 transfer mode flag */
};
struct mmc_data {
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index ba703384bea0..3d6a7c9b534f 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -15,10 +15,12 @@
#include <linux/mmc/card.h>
#include <linux/mmc/pm.h>
#include <linux/dma-direction.h>
+#include <linux/mmc/uhs2.h>
struct mmc_ios {
unsigned int clock; /* clock rate */
unsigned short vdd;
+ unsigned short vdd2; /* UHS2 VDD2 power supply */
unsigned int power_delay_ms; /* waiting for stable power */
/* vdd stores the bit number of the selected voltage range from below. */
@@ -60,6 +62,7 @@ struct mmc_ios {
#define MMC_TIMING_MMC_DDR52 8
#define MMC_TIMING_MMC_HS200 9
#define MMC_TIMING_MMC_HS400 10
+#define MMC_TIMING_UHS2 11
unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */
@@ -169,6 +172,11 @@ struct mmc_host_ops {
*/
int (*multi_io_quirk)(struct mmc_card *card,
unsigned int direction, int blk_size);
+ /* UHS2 interfaces */
+ int (*uhs2_detect_init)(struct mmc_host *host);
+ int (*uhs2_set_reg)(struct mmc_host *host, enum uhs2_act act);
+ void (*uhs2_disable_clk)(struct mmc_host *host);
+ void (*uhs2_enable_clk)(struct mmc_host *host);
};
struct mmc_cqe_ops {
@@ -261,6 +269,7 @@ struct mmc_pwrseq;
struct mmc_supply {
struct regulator *vmmc; /* Card power supply */
+ struct regulator *vmmc2; /* UHS2 VDD2 power supply */
struct regulator *vqmmc; /* Optional Vccq supply */
};
@@ -281,12 +290,14 @@ struct mmc_host {
u32 ocr_avail_sdio; /* SDIO-specific OCR */
u32 ocr_avail_sd; /* SD-specific OCR */
u32 ocr_avail_mmc; /* MMC-specific OCR */
+ u32 ocr_avail_uhs2; /* UHS2-specific OCR */
#ifdef CONFIG_PM_SLEEP
struct notifier_block pm_notify;
#endif
u32 max_current_330;
u32 max_current_300;
u32 max_current_180;
+ u32 max_current_180_vdd2; /* UHS2 vdd2 max curt. */
#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
@@ -305,6 +316,7 @@ struct mmc_host {
#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
+#define MMC_VDD2_165_195 0x00000080 /* UHS2 VDD2 1.65 ~ 1.95 */
u32 caps; /* Host capabilities */
@@ -336,6 +348,7 @@ struct mmc_host {
#define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */
#define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */
#define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */
+#define MMC_CAP_UHS2 (1 << 26) /* Host supports UHS2 mode */
#define MMC_CAP_DONE_COMPLETE (1 << 27) /* RW reqs can be completed within mmc_request_done() */
#define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */
#define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */
@@ -374,6 +387,17 @@ struct mmc_host {
mmc_pm_flag_t pm_caps; /* supported pm features */
+ struct uhs2_host_caps uhs2_caps; /* UHS2 host capabilities */
+ struct uhs2_card_prop uhs2_dev_prop; /* UHS2 device properties */
+ u32 group_desc; /* UHS2 property */
+ int flags;
+#define MMC_UHS2_SUPPORT (1 << 0)
+#define MMC_UHS2_INITIALIZED (1 << 1)
+#define MMC_UHS2_2L_HD (1 << 2)
+#define MMC_UHS2_APP_CMD (1 << 3)
+#define MMC_UHS2_SPEED_B (1 << 4)
+#define MMC_SUPPORT_ADMA3 (1 << 5)
+
/* host specific block data */
unsigned int max_seg_size; /* see blk_queue_max_segment_size */
unsigned short max_segs; /* see blk_queue_max_segments */
@@ -566,6 +590,12 @@ static inline int mmc_card_uhs(struct mmc_card *card)
card->host->ios.timing <= MMC_TIMING_UHS_DDR50;
}
+static inline bool mmc_card_uhs2(struct mmc_card *card)
+{
+ return (card->host->flags & MMC_UHS2_SUPPORT) &&
+ (card->host->flags & MMC_UHS2_INITIALIZED);
+}
+
void mmc_retune_timer_stop(struct mmc_host *host);
static inline void mmc_retune_needed(struct mmc_host *host)
--
2.24.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [RFC PATCH v2 2/6] mmc: core: Add UHS-II support in core layer
2020-01-09 9:13 [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
2020-01-09 9:14 ` [RFC PATCH v2 1/6] mmc: Add UHS-II support in public headers Ben Chuang
@ 2020-01-09 9:14 ` Ben Chuang
2020-01-09 9:14 ` [RFC PATCH v2 3/6] mmc: host: Add UHS-II support in host layer Ben Chuang
` (4 subsequent siblings)
6 siblings, 0 replies; 12+ messages in thread
From: Ben Chuang @ 2020-01-09 9:14 UTC (permalink / raw)
To: adrian.hunter, ulf.hansson
Cc: linux-mmc, linux-kernel, greg.tu, ben.chuang, Ben Chuang
From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Add UHS-II support in core layer
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
---
drivers/mmc/core/Makefile | 3 +-
drivers/mmc/core/block.c | 7 +-
drivers/mmc/core/bus.c | 5 +-
drivers/mmc/core/core.c | 65 ++-
drivers/mmc/core/core.h | 3 +-
drivers/mmc/core/regulator.c | 14 +
drivers/mmc/core/sd.c | 27 +-
drivers/mmc/core/sd_ops.c | 12 +
drivers/mmc/core/uhs2.c | 992 +++++++++++++++++++++++++++++++++++
drivers/mmc/core/uhs2.h | 23 +
10 files changed, 1139 insertions(+), 12 deletions(-)
create mode 100644 drivers/mmc/core/uhs2.c
create mode 100644 drivers/mmc/core/uhs2.h
diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile
index 95ffe008ebdf..ddfda7a234cb 100644
--- a/drivers/mmc/core/Makefile
+++ b/drivers/mmc/core/Makefile
@@ -8,7 +8,8 @@ mmc_core-y := core.o bus.o host.o \
mmc.o mmc_ops.o sd.o sd_ops.o \
sdio.o sdio_ops.o sdio_bus.o \
sdio_cis.o sdio_io.o sdio_irq.o \
- slot-gpio.o regulator.o
+ slot-gpio.o regulator.o \
+ uhs2.o
mmc_core-$(CONFIG_OF) += pwrseq.o
obj-$(CONFIG_PWRSEQ_SIMPLE) += pwrseq_simple.o
obj-$(CONFIG_PWRSEQ_SD8787) += pwrseq_sd8787.o
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 95b41c0891d0..c5f6bfd05d49 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -56,6 +56,7 @@
#include "mmc_ops.h"
#include "quirks.h"
#include "sd_ops.h"
+#include "uhs2.h"
MODULE_ALIAS("mmc:block");
#ifdef MODULE_PARAM_PREFIX
@@ -1551,6 +1552,9 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
struct request *req = mmc_queue_req_to_req(mqrq);
struct mmc_blk_data *md = mq->blkdata;
bool do_rel_wr, do_data_tag;
+ bool do_multi;
+
+ do_multi = (card->host->flags & MMC_UHS2_INITIALIZED) ? true : false;
mmc_blk_data_prep(mq, mqrq, disable_multi, &do_rel_wr, &do_data_tag);
@@ -1561,7 +1565,7 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
brq->cmd.arg <<= 9;
brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
- if (brq->data.blocks > 1 || do_rel_wr) {
+ if (brq->data.blocks > 1 || do_rel_wr || do_multi) {
/* SPI multiblock writes terminate using a special
* token, not a STOP_TRANSMISSION request.
*/
@@ -1574,6 +1578,7 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
brq->mrq.stop = NULL;
readcmd = MMC_READ_SINGLE_BLOCK;
writecmd = MMC_WRITE_BLOCK;
+ brq->cmd.uhs2_tmode0_flag = 1;
}
brq->cmd.opcode = rq_data_dir(req) == READ ? readcmd : writecmd;
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 74de3f2dda38..c1cd1079c186 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -336,8 +336,9 @@ int mmc_add_card(struct mmc_card *card)
} else {
pr_info("%s: new %s%s%s%s%s%s card at address %04x\n",
mmc_hostname(card->host),
- mmc_card_uhs(card) ? "ultra high speed " :
- (mmc_card_hs(card) ? "high speed " : ""),
+ mmc_card_uhs2(card) ? "ultra high speed 2 " :
+ (mmc_card_uhs(card) ? "ultra high speed 1 " :
+ (mmc_card_hs(card) ? "high speed " : "")),
mmc_card_hs400(card) ? "HS400 " :
(mmc_card_hs200(card) ? "HS200 " : ""),
mmc_card_hs400es(card) ? "Enhanced strobe " : "",
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index abf8f5eb0a1c..8f64dbaea5e6 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -31,6 +31,7 @@
#include <linux/mmc/mmc.h>
#include <linux/mmc/sd.h>
#include <linux/mmc/slot-gpio.h>
+#include <linux/mmc/uhs2.h>
#define CREATE_TRACE_POINTS
#include <trace/events/mmc.h>
@@ -41,6 +42,7 @@
#include "host.h"
#include "sdio_bus.h"
#include "pwrseq.h"
+#include "uhs2.h"
#include "mmc_ops.h"
#include "sd_ops.h"
@@ -51,6 +53,7 @@
#define SD_DISCARD_TIMEOUT_MS (250)
static const unsigned freqs[] = { 400000, 300000, 200000, 100000 };
+static const unsigned int uhs2_freqs[] = { 52000000, 26000000 };
/*
* Enabling software CRCs on the data blocks can be a significant (30%)
@@ -329,6 +332,11 @@ static int mmc_mrq_prep(struct mmc_host *host, struct mmc_request *mrq)
}
}
+ if ((host->flags & MMC_UHS2_SUPPORT) &&
+ (host->flags & MMC_UHS2_INITIALIZED) &&
+ (mrq->cmd->uhs2_cmd == NULL))
+ uhs2_prepare_sd_cmd(host, mrq);
+
return 0;
}
@@ -433,6 +441,14 @@ void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq)
__mmc_start_request(host, mrq);
}
+ if (cmd && cmd->uhs2_cmd) {
+ pr_debug("%s: %s free uhs2_cmd!\n",
+ mmc_hostname(host), __func__);
+ kfree(cmd->uhs2_cmd->payload);
+ kfree(cmd->uhs2_cmd);
+ cmd->uhs2_cmd = NULL;
+ }
+
mmc_retune_release(host);
}
EXPORT_SYMBOL(mmc_wait_for_req_done);
@@ -897,7 +913,7 @@ EXPORT_SYMBOL(mmc_put_card);
* Internal function that does the actual ios call to the host driver,
* optionally printing some debug output.
*/
-static inline void mmc_set_ios(struct mmc_host *host)
+void mmc_set_ios(struct mmc_host *host)
{
struct mmc_ios *ios = &host->ios;
@@ -909,14 +925,17 @@ static inline void mmc_set_ios(struct mmc_host *host)
host->ops->set_ios(host, ios);
}
+EXPORT_SYMBOL(mmc_set_ios);
/*
* Control chip select pin on a host.
*/
void mmc_set_chip_select(struct mmc_host *host, int mode)
{
- host->ios.chip_select = mode;
- mmc_set_ios(host);
+ if (!(host->flags & MMC_UHS2_INITIALIZED)) {
+ host->ios.chip_select = mode;
+ mmc_set_ios(host);
+ }
}
/*
@@ -1332,6 +1351,11 @@ void mmc_power_up(struct mmc_host *host, u32 ocr)
if (host->ios.power_mode == MMC_POWER_ON)
return;
+ if (host->flags & MMC_UHS2_SUPPORT) {
+ uhs2_power_up(host);
+ return;
+ }
+
mmc_pwrseq_pre_power_on(host);
host->ios.vdd = fls(ocr) - 1;
@@ -2194,9 +2218,11 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
if (!mmc_attach_sdio(host))
return 0;
- if (!(host->caps2 & MMC_CAP2_NO_SD))
- if (!mmc_attach_sd(host))
+ if (!(host->caps2 & MMC_CAP2_NO_SD)) {
+ /* set false for SD card */
+ if (!mmc_attach_sd(host, false))
return 0;
+ }
if (!(host->caps2 & MMC_CAP2_NO_MMC))
if (!mmc_attach_mmc(host))
@@ -2278,6 +2304,7 @@ void mmc_rescan(struct work_struct *work)
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
int i;
+ int err;
if (host->rescan_disable)
return;
@@ -2329,6 +2356,28 @@ void mmc_rescan(struct work_struct *work)
goto out;
}
+ if (host->caps & MMC_CAP_UHS2) {
+ /*
+ * Start to try UHS-II initialization from 52MHz to 26MHz
+ * (RCLK range) per spec.
+ */
+ for (i = 0; i < ARRAY_SIZE(uhs2_freqs); i++) {
+ err = mmc_uhs2_try_frequency(host,
+ max(uhs2_freqs[i], host->f_min));
+ if (!err) {
+ mmc_release_host(host);
+ goto out;
+ } else if (err == UHS2_PHY_INIT_ERR)
+ /* UHS2 IF detect or Lane Sync error.
+ * Try legacy interface.
+ */
+ break;
+
+ if (uhs2_freqs[i] <= host->f_min)
+ break;
+ }
+ }
+
for (i = 0; i < ARRAY_SIZE(freqs); i++) {
if (!mmc_rescan_try_freq(host, max(freqs[i], host->f_min)))
break;
@@ -2350,7 +2399,11 @@ void mmc_start_host(struct mmc_host *host)
if (!(host->caps2 & MMC_CAP2_NO_PRESCAN_POWERUP)) {
mmc_claim_host(host);
- mmc_power_up(host, host->ocr_avail);
+
+ /* Power up here will make UHS2 init ugly. */
+ if (!(host->caps & MMC_CAP_UHS2))
+ mmc_power_up(host, host->ocr_avail);
+
mmc_release_host(host);
}
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index 575ac0257af2..1fb10c341b43 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -76,7 +76,7 @@ int _mmc_detect_card_removed(struct mmc_host *host);
int mmc_detect_card_removed(struct mmc_host *host);
int mmc_attach_mmc(struct mmc_host *host);
-int mmc_attach_sd(struct mmc_host *host);
+int mmc_attach_sd(struct mmc_host *host, bool flag_uhs2);
int mmc_attach_sdio(struct mmc_host *host);
/* Module parameters */
@@ -124,6 +124,7 @@ int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
void mmc_release_host(struct mmc_host *host);
void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
+void mmc_set_ios(struct mmc_host *host);
/**
* mmc_claim_host - exclusively claim a host
diff --git a/drivers/mmc/core/regulator.c b/drivers/mmc/core/regulator.c
index b6febbcf8978..f9a643f653fe 100644
--- a/drivers/mmc/core/regulator.c
+++ b/drivers/mmc/core/regulator.c
@@ -236,6 +236,7 @@ int mmc_regulator_get_supply(struct mmc_host *mmc)
mmc->supply.vmmc = devm_regulator_get_optional(dev, "vmmc");
mmc->supply.vqmmc = devm_regulator_get_optional(dev, "vqmmc");
+ mmc->supply.vmmc2 = devm_regulator_get_optional(dev, "vmmc2");
if (IS_ERR(mmc->supply.vmmc)) {
if (PTR_ERR(mmc->supply.vmmc) == -EPROBE_DEFER)
@@ -255,6 +256,19 @@ int mmc_regulator_get_supply(struct mmc_host *mmc)
dev_dbg(dev, "No vqmmc regulator found\n");
}
+ if (IS_ERR(mmc->supply.vmmc2)) {
+ if (PTR_ERR(mmc->supply.vmmc2) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ dev_dbg(dev, "No vmmc2 regulator found\n");
+ } else {
+ ret = mmc_regulator_get_ocrmask(mmc->supply.vmmc2);
+ if (ret > 0)
+ mmc->ocr_avail_uhs2 = ret;
+ else
+ dev_warn(dev, "Failed getting UHS2 OCR mask: %d\n",
+ ret);
+ }
+
return 0;
}
EXPORT_SYMBOL_GPL(mmc_regulator_get_supply);
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index fe914ff5f5d6..b079f3f164fe 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -877,6 +877,19 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card,
err = mmc_read_switch(card);
if (err)
return err;
+ if (host->flags & MMC_UHS2_INITIALIZED) {
+ u8 status[64];
+ /*
+ * send CMD6 to set Maximum Power Consumption
+ * to get better performance
+ */
+ err = mmc_sd_switch(card, 0, 3,
+ SD_SET_CURRENT_LIMIT_1000, status);
+ if (!err) {
+ err = mmc_sd_switch(card, 1, 3,
+ SD_SET_CURRENT_LIMIT_1000, status);
+ }
+ }
}
/*
@@ -1019,6 +1032,11 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
if (err)
goto free_card;
+ /* For UHS2, skip the UHS-I initialization. */
+ if ((host->flags & MMC_UHS2_SUPPORT) &&
+ (host->flags & MMC_UHS2_INITIALIZED))
+ goto done;
+
/*
* If the card has not been power cycled, it may still be using 1.8V
* signaling. Detect that situation and try to initialize a UHS-I (1.8V)
@@ -1266,7 +1284,7 @@ static const struct mmc_bus_ops mmc_sd_ops = {
/*
* Starting point for SD card init.
*/
-int mmc_attach_sd(struct mmc_host *host)
+int mmc_attach_sd(struct mmc_host *host, bool flag_uhs2)
{
int err;
u32 ocr, rocr;
@@ -1300,6 +1318,13 @@ int mmc_attach_sd(struct mmc_host *host)
rocr = mmc_select_voltage(host, ocr);
+ /*
+ * Some cards have zero value of rocr in UHS-II mode. Assign host's ocr
+ * value to rocr.
+ */
+ if (flag_uhs2 && !rocr)
+ rocr = host->ocr_avail;
+
/*
* Can we support the voltage(s) of the card(s)?
*/
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 22bf528294b9..9dc296356928 100644
--- a/drivers/mmc/core/sd_ops.c
+++ b/drivers/mmc/core/sd_ops.c
@@ -26,6 +26,15 @@ int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
if (WARN_ON(card && card->host != host))
return -EINVAL;
+ /* UHS2 packet has APP bit so only set APP_CMD flag here.
+ * Will set the APP bit when assembling UHS2 packet.
+ */
+ if (host->flags & MMC_UHS2_SUPPORT &&
+ host->flags & MMC_UHS2_INITIALIZED) {
+ host->flags |= MMC_UHS2_APP_CMD;
+ return 0;
+ }
+
cmd.opcode = MMC_APP_CMD;
if (card) {
@@ -235,6 +244,7 @@ int mmc_app_send_scr(struct mmc_card *card)
cmd.opcode = SD_APP_SEND_SCR;
cmd.arg = 0;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.uhs2_tmode0_flag = 1;
data.blksz = 8;
data.blocks = 1;
@@ -282,6 +292,7 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group,
cmd.arg &= ~(0xF << (group * 4));
cmd.arg |= value << (group * 4);
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.uhs2_tmode0_flag = 1;
data.blksz = 64;
data.blocks = 1;
@@ -323,6 +334,7 @@ int mmc_app_sd_status(struct mmc_card *card, void *ssr)
cmd.opcode = SD_APP_SD_STATUS;
cmd.arg = 0;
cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.uhs2_tmode0_flag = 1;
data.blksz = 64;
data.blocks = 1;
diff --git a/drivers/mmc/core/uhs2.c b/drivers/mmc/core/uhs2.c
new file mode 100644
index 000000000000..43ea155ccc59
--- /dev/null
+++ b/drivers/mmc/core/uhs2.c
@@ -0,0 +1,992 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * linux/drivers/mmc/core/uhs2.c - UHS-II driver
+ *
+ * Copyright (C) 2014 Intel Corp, All Rights Reserved.
+ */
+
+#include <asm/byteorder.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/core.h>
+#include <linux/mmc/sdio.h>
+#include <linux/mmc/slot-gpio.h>
+#include <linux/mmc/uhs2.h>
+
+#include "uhs2.h"
+#include "mmc_ops.h"
+#include "sd_ops.h"
+#include "core.h"
+
+#define DBG(f, x...) \
+ pr_warn("[%s()]: " f, __func__, ## x)
+
+/*
+ * Payload, uhs2_cmd are all allocated which should be freed when
+ * response is got.
+ * resp is inputted outside which should be a variable created by caller
+ * so caller should handle it. For SD command, there is no uhs2_resp and
+ * response should be stored in resp of mmc_command.
+ */
+int uhs2_cmd_assemble(struct mmc_command *cmd, u16 header, u16 arg,
+ u32 *payload, u8 plen, u8 *resp, u8 resp_len)
+{
+ struct uhs2_command *uhs2_cmd;
+
+ if (cmd == NULL)
+ return -EIO;
+
+ uhs2_cmd = kzalloc(sizeof(struct uhs2_command),
+ GFP_KERNEL);
+ if (!uhs2_cmd) {
+ kfree(payload);
+ return -ENOMEM;
+ }
+
+ uhs2_cmd->header = header;
+ uhs2_cmd->arg = arg;
+ uhs2_cmd->payload = payload;
+ uhs2_cmd->payload_len = plen * sizeof(u32);
+ uhs2_cmd->packet_len = uhs2_cmd->payload_len + 4;
+
+ cmd->uhs2_cmd = uhs2_cmd;
+ cmd->uhs2_resp = resp;
+ cmd->uhs2_resp_len = resp_len;
+
+ pr_debug("%s: uhs2_cmd: header=0x%x arg=0x%x\n",
+ __func__, uhs2_cmd->header, uhs2_cmd->arg);
+ pr_debug("%s: payload_len=%d packet_len=%d resp_len=%d\n",
+ __func__, uhs2_cmd->payload_len, uhs2_cmd->packet_len,
+ cmd->uhs2_resp_len);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(uhs2_cmd_assemble);
+
+int uhs2_prepare_sd_cmd(struct mmc_host *host, struct mmc_request *mrq)
+{
+ struct mmc_command *cmd;
+ u16 header = 0, arg = 0;
+ u32 *payload;
+ u8 plen = 0;
+ int err = 0;
+
+ cmd = mrq->cmd;
+ header = host->uhs2_dev_prop.node_id;
+ if ((cmd->flags & MMC_CMD_MASK) == MMC_CMD_ADTC)
+ header |= UHS2_PACKET_TYPE_DCMD;
+ else
+ header |= UHS2_PACKET_TYPE_CCMD;
+
+ arg = cmd->opcode << UHS2_SD_CMD_INDEX_POS;
+ if (host->flags & MMC_UHS2_APP_CMD) {
+ arg |= UHS2_SD_CMD_APP;
+ host->flags &= ~MMC_UHS2_APP_CMD;
+ }
+
+ if ((cmd->flags & MMC_CMD_MASK) == MMC_CMD_ADTC &&
+ !cmd->uhs2_tmode0_flag) {
+ payload = kzalloc(2*sizeof(u32), GFP_KERNEL);
+ if (!payload)
+ return -ENOMEM;
+ plen = 8 / sizeof(u32);
+
+ if (host->flags & MMC_UHS2_2L_HD)
+ arg |= UHS2_DCMD_2L_HD_MODE;
+
+ arg |= UHS2_DCMD_LM_TLEN_EXIST;
+
+ if (cmd->data->blocks == 1 &&
+ cmd->data->blksz != 512 &&
+ cmd->opcode != MMC_READ_SINGLE_BLOCK &&
+ cmd->opcode != MMC_WRITE_BLOCK) {
+ arg |= UHS2_DCMD_TLUM_BYTE_MODE;
+ payload[1] = uhs2_dcmd_convert_msb(cmd->data->blksz);
+ } else {
+ payload[1] = uhs2_dcmd_convert_msb(cmd->data->blocks);
+ }
+
+ if (cmd->opcode == SD_IO_RW_EXTENDED) {
+ arg &= ~(UHS2_DCMD_LM_TLEN_EXIST |
+ UHS2_DCMD_TLUM_BYTE_MODE |
+ UHS2_NATIVE_DCMD_DAM_IO);
+ payload[1] = 0;
+ plen = 4 / sizeof(u32);
+ }
+ } else {
+ payload = kzalloc(1 * sizeof(u32), GFP_KERNEL);
+ if (!payload)
+ return -ENOMEM;
+ plen = 4 / sizeof(u32);
+ }
+
+ payload[0] = uhs2_dcmd_convert_msb(cmd->arg);
+ pr_debug("%s: %s: sd_cmd->arg = 0x%x, payload[0]= 0x%x.\n",
+ mmc_hostname(host), __func__, cmd->arg, payload[0]);
+
+ err = uhs2_cmd_assemble(cmd, header, arg, payload, plen,
+ NULL, 0);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(uhs2_prepare_sd_cmd);
+
+/*
+ * Apply power to the UHS2 stack. This is a two-stage process.
+ * First, we enable power to the card without the clock running.
+ * We then wait a bit for the power to stabilise. Finally,
+ * enable the bus drivers and clock to the card.
+ *
+ * We must _NOT_ enable the clock prior to power stablising.
+ *
+ * If a host does all the power sequencing itself, ignore the
+ * initial MMC_POWER_UP stage.
+ */
+void uhs2_power_up(struct mmc_host *host)
+{
+ if (host->ios.power_mode == MMC_POWER_ON)
+ return;
+
+ host->ios.vdd = fls(host->ocr_avail) - 1;
+ host->ios.vdd2 = fls(host->ocr_avail_uhs2) - 1;
+ if (mmc_host_is_spi(host))
+ host->ios.chip_select = MMC_CS_HIGH;
+ else
+ host->ios.chip_select = MMC_CS_DONTCARE;
+ host->ios.clock = host->f_init;
+ host->ios.timing = MMC_TIMING_UHS2;
+ host->ios.power_mode = MMC_POWER_ON;
+ mmc_set_ios(host);
+
+ /*
+ * This delay should be sufficient to allow the power supply
+ * to reach the minimum voltage.
+ */
+ mmc_delay(10);
+}
+EXPORT_SYMBOL_GPL(uhs2_power_up);
+
+static int uhs2_dev_init(struct mmc_host *host)
+{
+ struct mmc_command cmd = {0};
+ u32 cnt;
+ u32 dap, gap, gap1;
+ u16 header = 0, arg = 0;
+ u32 *payload;
+ u8 plen = 1;
+ u8 gd = 0, cf = 1;
+ u8 resp[6] = {0};
+ u8 resp_len = 6;
+ int err;
+
+ dap = host->uhs2_caps.dap;
+ gap = host->uhs2_caps.gap;
+
+ header = UHS2_NATIVE_PACKET | UHS2_PACKET_TYPE_CCMD;
+ arg = ((UHS2_DEV_CMD_DEVICE_INIT & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_WRITE |
+ UHS2_NATIVE_CMD_PLEN_4B |
+ (UHS2_DEV_CMD_DEVICE_INIT >> 8);
+
+ /* need this for some cards */
+ cmd.busy_timeout = 1000;
+
+ for (cnt = 0; cnt < 30; cnt++) {
+ payload = kcalloc(plen, sizeof(u32), GFP_KERNEL);
+ if (!payload)
+ return -ENOMEM;
+ payload[0] = ((dap & 0xF) << 12) |
+ (cf << 11) |
+ ((gd & 0xF) << 4) |
+ (gap & 0xF);
+
+ err = uhs2_cmd_assemble(&cmd, header, arg, payload, plen,
+ resp, resp_len);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ DBG("Begin DEVICE_INIT, header=0x%x, arg=0x%x, payload=0x%x.\n",
+ header, arg, payload[0]);
+
+ DBG("Sending DEVICE_INIT. Count = %d\n", cnt);
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+#ifdef CONFIG_MMC_DEBUG
+ int i;
+
+ pr_warn("%s: DEVICE_INIT response is: ", mmc_hostname(host));
+ for (i = 0; i < resp_len; i++)
+ pr_warn("0x%x ", resp[i]);
+ pr_warn("\n");
+#endif
+
+ if (resp[3] != (UHS2_DEV_CMD_DEVICE_INIT & 0xFF)) {
+ pr_err("%s: DEVICE_INIT response is wrong!\n",
+ mmc_hostname(host));
+ return -EIO;
+ }
+
+ if (resp[5] & 0x8) {
+ DBG("CF is set, device is initialized!\n");
+ host->group_desc = gd;
+ break;
+ }
+ gap1 = resp[4] & 0x0F;
+ if (gap == gap1)
+ gd++;
+ }
+ if (cnt == 30) {
+ pr_err("%s: DEVICE_INIT fail, already 30 times!\n",
+ mmc_hostname(host));
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int uhs2_enum(struct mmc_host *host)
+{
+ struct mmc_command cmd = {0};
+ u16 header = 0, arg = 0;
+ u32 *payload;
+ u8 plen = 1;
+ u8 id_f = 0xF, id_l = 0x0;
+ u8 resp[8] = {0};
+ u8 resp_len = 8;
+ int err;
+
+ header = UHS2_NATIVE_PACKET | UHS2_PACKET_TYPE_CCMD;
+ arg = ((UHS2_DEV_CMD_ENUMERATE & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_WRITE |
+ UHS2_NATIVE_CMD_PLEN_4B |
+ (UHS2_DEV_CMD_ENUMERATE >> 8);
+
+ payload = kcalloc(plen, sizeof(u32), GFP_KERNEL);
+ if (!payload)
+ return -ENOMEM;
+ payload[0] = (id_f << 4) | id_l;
+
+ DBG("Begin ENUMERATE, header=0x%x, arg=0x%x, payload=0x%x.\n",
+ header, arg, payload[0]);
+ err = uhs2_cmd_assemble(&cmd, header, arg, payload, plen,
+ resp, resp_len);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+#ifdef CONFIG_MMC_DEBUG
+ int i;
+
+ pr_warn("%s: ENUMERATE response is: ", mmc_hostname(host));
+ for (i = 0; i < resp_len; i++)
+ pr_warn("0x%x ", resp[i]);
+ pr_warn("\n");
+#endif
+
+ if (resp[3] != (UHS2_DEV_CMD_ENUMERATE & 0xFF)) {
+ pr_err("%s: ENUMERATE response is wrong!\n",
+ mmc_hostname(host));
+ return -EIO;
+ }
+
+ id_f = (resp[4] >> 4) & 0xF;
+ id_l = resp[4] & 0xF;
+ DBG("id_f = %d, id_l = %d.\n", id_f, id_l);
+ DBG("Enumerate Cmd Completed. No. of Devices connected = %d\n",
+ id_l - id_f + 1);
+ host->uhs2_dev_prop.node_id = id_f;
+
+ return 0;
+}
+
+static int uhs2_config_read(struct mmc_host *host)
+{
+ struct mmc_command cmd = {0};
+ u16 header = 0, arg = 0;
+ u32 cap;
+ int err;
+
+ DBG("INQUIRY_CFG: read Generic Caps.\n");
+ header = UHS2_NATIVE_PACKET |
+ UHS2_PACKET_TYPE_CCMD |
+ host->uhs2_dev_prop.node_id;
+ arg = ((UHS2_DEV_CONFIG_GEN_CAPS & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_READ |
+ UHS2_NATIVE_CMD_PLEN_4B |
+ (UHS2_DEV_CONFIG_GEN_CAPS >> 8);
+
+ DBG("Begin INQUIRY_CFG, header=0x%x, arg=0x%x.\n",
+ header, arg);
+ /* There is no payload because per spec, there should be
+ * no payload field for read CCMD.
+ * Plen is set in arg. Per spec, plen for read CCMD
+ * represents the len of read data which is assigned in payload
+ * of following RES (p136).
+ */
+ err = uhs2_cmd_assemble(&cmd, header, arg, NULL, 0,
+ NULL, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+#ifdef CONFIG_MMC_DEBUG
+ int i;
+
+ pr_warn("%s: INQUIRY_CFG generic response is: ", mmc_hostname(host));
+ for (i = 0; i < 2; i++)
+ pr_warn("0x%x ", cmd.resp[i]);
+ pr_warn("\n");
+#endif
+
+ cap = cmd.resp[0];
+ DBG("Device Generic Caps (0-31) is: 0x%x.\n", cap);
+ host->uhs2_dev_prop.n_lanes = (cap >> UHS2_DEV_CONFIG_N_LANES_POS) &
+ UHS2_DEV_CONFIG_N_LANES_MASK;
+ host->uhs2_dev_prop.dadr_len = (cap >> UHS2_DEV_CONFIG_DADR_POS) &
+ UHS2_DEV_CONFIG_DADR_MASK;
+ host->uhs2_dev_prop.app_type = (cap >> UHS2_DEV_CONFIG_APP_POS) &
+ UHS2_DEV_CONFIG_APP_MASK;
+
+ DBG("INQUIRY_CFG: read PHY Caps.\n");
+ arg = ((UHS2_DEV_CONFIG_PHY_CAPS & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_READ |
+ UHS2_NATIVE_CMD_PLEN_8B |
+ (UHS2_DEV_CONFIG_PHY_CAPS >> 8);
+
+ DBG("Begin INQUIRY_CFG, header=0x%x, arg=0x%x.\n",
+ header, arg);
+ err = uhs2_cmd_assemble(&cmd, header, arg, NULL, 0,
+ NULL, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+#ifdef CONFIG_MMC_DEBUG
+ pr_warn("%s: INQUIRY_CFG PHY response is: ", mmc_hostname(host));
+ for (i = 0; i < 2; i++)
+ pr_warn("0x%x ", cmd.resp[i]);
+ pr_warn("\n");
+#endif
+
+ cap = cmd.resp[0];
+ DBG("Device PHY Caps (0-31) is: 0x%x.\n", cap);
+ host->uhs2_dev_prop.phy_minor_rev = cap &
+ UHS2_DEV_CONFIG_PHY_MINOR_MASK;
+ host->uhs2_dev_prop.phy_major_rev = (cap >>
+ UHS2_DEV_CONFIG_PHY_MAJOR_POS) &
+ UHS2_DEV_CONFIG_PHY_MAJOR_MASK;
+ host->uhs2_dev_prop.can_hibernate = (cap >>
+ UHS2_DEV_CONFIG_CAN_HIBER_POS) &
+ UHS2_DEV_CONFIG_CAN_HIBER_MASK;
+
+ cap = cmd.resp[1];
+ DBG("Device PHY Caps (32-63) is: 0x%x.\n", cap);
+ host->uhs2_dev_prop.n_lss_sync = cap & UHS2_DEV_CONFIG_N_LSS_SYN_MASK;
+ host->uhs2_dev_prop.n_lss_dir = (cap >>
+ UHS2_DEV_CONFIG_N_LSS_DIR_POS) &
+ UHS2_DEV_CONFIG_N_LSS_DIR_MASK;
+ if (host->uhs2_dev_prop.n_lss_sync == 0)
+ host->uhs2_dev_prop.n_lss_sync = 16 << 2;
+ else
+ host->uhs2_dev_prop.n_lss_sync <<= 2;
+
+ if (host->uhs2_dev_prop.n_lss_dir == 0)
+ host->uhs2_dev_prop.n_lss_dir = 16 << 3;
+ else
+ host->uhs2_dev_prop.n_lss_dir <<= 3;
+
+ DBG("INQUIRY_CFG: read LINK-TRAN Caps.\n");
+ arg = ((UHS2_DEV_CONFIG_LINK_TRAN_CAPS & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_READ |
+ UHS2_NATIVE_CMD_PLEN_8B |
+ (UHS2_DEV_CONFIG_LINK_TRAN_CAPS >> 8);
+
+ DBG("Begin INQUIRY_CFG, header=0x%x, arg=0x%x.\n",
+ header, arg);
+ err = uhs2_cmd_assemble(&cmd, header, arg, NULL, 0,
+ NULL, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+#ifdef CONFIG_MMC_DEBUG
+ pr_warn("%s: INQUIRY_CFG Link-Tran response is: ", mmc_hostname(host));
+ for (i = 0; i < 2; i++)
+ pr_warn("0x%x ", cmd.resp[i]);
+ pr_warn("\n");
+#endif
+
+ cap = cmd.resp[0];
+ DBG("Device LINK-TRAN Caps (0-31) is: 0x%x.\n", cap);
+ host->uhs2_dev_prop.link_minor_rev = cap &
+ UHS2_DEV_CONFIG_LT_MINOR_MASK;
+ host->uhs2_dev_prop.link_major_rev = (cap >>
+ UHS2_DEV_CONFIG_LT_MAJOR_POS) &
+ UHS2_DEV_CONFIG_LT_MAJOR_MASK;
+ host->uhs2_dev_prop.n_fcu = (cap >> UHS2_DEV_CONFIG_N_FCU_POS) &
+ UHS2_DEV_CONFIG_N_FCU_MASK;
+ host->uhs2_dev_prop.dev_type = (cap >> UHS2_DEV_CONFIG_DEV_TYPE_POS) &
+ UHS2_DEV_CONFIG_DEV_TYPE_MASK;
+ host->uhs2_dev_prop.maxblk_len = (cap >>
+ UHS2_DEV_CONFIG_MAX_BLK_LEN_POS) &
+ UHS2_DEV_CONFIG_MAX_BLK_LEN_MASK;
+
+ cap = cmd.resp[1];
+ DBG("Device LINK-TRAN Caps (32-63) is: 0x%x.\n", cap);
+ host->uhs2_dev_prop.n_data_gap = cap & UHS2_DEV_CONFIG_N_DATA_GAP_MASK;
+ if (host->uhs2_dev_prop.n_fcu == 0)
+ host->uhs2_dev_prop.n_fcu = 256;
+
+ return 0;
+}
+
+static int uhs2_config_write(struct mmc_host *host)
+{
+ struct mmc_command cmd = {0};
+ u16 header = 0, arg = 0;
+ u32 nTry;
+ u32 *payload;
+ u8 nMinDataGap;
+ u8 plen = 1;
+ int err;
+ u8 resp[5] = {0};
+ u8 resp_len = 5;
+ /*
+ * must long enough for RECV_SW_DIR == 2;
+ * need lss_dir at least 4 for GL9755 device
+ * max compitable gLssDir = 0
+ */
+ u32 gLssDir = 0;
+
+ DBG("SET_COMMON_CFG: write Generic Settings.\n");
+ header = UHS2_NATIVE_PACKET |
+ UHS2_PACKET_TYPE_CCMD|host->uhs2_dev_prop.node_id;
+ arg = ((UHS2_DEV_CONFIG_GEN_SET & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_WRITE |
+ UHS2_NATIVE_CMD_PLEN_8B |
+ (UHS2_DEV_CONFIG_GEN_SET >> 8);
+
+ if (host->uhs2_dev_prop.n_lanes == UHS2_DEV_CONFIG_2L_HD_FD &&
+ host->uhs2_caps.n_lanes == UHS2_DEV_CONFIG_2L_HD_FD) {
+ /* Support HD */
+ DBG("Both Host and device support 2L-HD.\n");
+ host->flags |= MMC_UHS2_2L_HD;
+ host->uhs2_caps.n_lanes_set = UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD;
+ host->uhs2_dev_prop.n_lanes_set =
+ UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD;
+ nMinDataGap = 1;
+ } else {
+ /* Only support 2L-FD so far */
+ host->flags &= ~MMC_UHS2_2L_HD;
+ host->uhs2_caps.n_lanes_set = UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD;
+ host->uhs2_dev_prop.n_lanes_set =
+ UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD;
+ nMinDataGap = 3;
+ }
+
+ plen = 2;
+ payload = kcalloc(plen, sizeof(u32), GFP_KERNEL);
+ payload[0] = host->uhs2_dev_prop.n_lanes_set <<
+ UHS2_DEV_CONFIG_N_LANES_POS;
+ payload[1] = 0;
+ payload[0] = cpu_to_be32(payload[0]);
+ payload[1] = cpu_to_be32(payload[1]);
+
+ DBG("Begin SET_COMMON_CFG, header=0x%x, arg=0x%x\n", header, arg);
+ DBG("UHS2 write Generic Settings %08x %08x\n",
+ payload[0], payload[1]);
+ DBG("flags=%08x dev_prop.n_lanes_set=%x host_caps.n_lanes_set=%x\n",
+ host->flags,
+ host->uhs2_dev_prop.n_lanes_set,
+ host->uhs2_caps.n_lanes_set);
+
+ /*
+ * There is no payload because per spec, there should be
+ * no payload field for read CCMD.
+ * Plen is set in arg. Per spec, plen for read CCMD
+ * represents the len of read data which is assigned in payload
+ * of following RES (p136).
+ */
+ err = uhs2_cmd_assemble(&cmd, header, arg, payload, plen,
+ NULL, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ DBG("SET_COMMON_CFG: PHY Settings.\n");
+ arg = ((UHS2_DEV_CONFIG_PHY_SET & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_WRITE |
+ UHS2_NATIVE_CMD_PLEN_8B |
+ (UHS2_DEV_CONFIG_PHY_SET >> 8);
+
+ for (nTry = 0; nTry < 2; nTry++) {
+ plen = 2;
+ payload = kcalloc(plen, sizeof(u32), GFP_KERNEL);
+
+ if (host->uhs2_caps.speed_range ==
+ UHS2_DEV_CONFIG_PHY_SET_SPEED_B) {
+ host->flags |= MMC_UHS2_SPEED_B;
+ host->uhs2_dev_prop.speed_range_set =
+ UHS2_DEV_CONFIG_PHY_SET_SPEED_B;
+ DBG("set dev_prop.speed_range_set to SPEED_B\n");
+ } else {
+ host->uhs2_dev_prop.speed_range_set =
+ UHS2_DEV_CONFIG_PHY_SET_SPEED_A;
+ host->flags &= ~MMC_UHS2_SPEED_B;
+ DBG("set dev_prop.speed_range_set to SPEED_A\n");
+ }
+
+ payload[0] = host->uhs2_dev_prop.speed_range_set <<
+ UHS2_DEV_CONFIG_PHY_SET_SPEED_POS;
+
+ host->uhs2_dev_prop.n_lss_sync_set =
+ (min(host->uhs2_dev_prop.n_lss_sync,
+ host->uhs2_caps.n_lss_sync) >> 2) &
+ UHS2_DEV_CONFIG_N_LSS_SYN_MASK;
+ host->uhs2_caps.n_lss_sync_set =
+ host->uhs2_dev_prop.n_lss_sync_set;
+
+ if (nTry) {
+ host->uhs2_dev_prop.n_lss_dir_set =
+ (max(host->uhs2_dev_prop.n_lss_dir,
+ host->uhs2_caps.n_lss_dir) >> 3) &
+ UHS2_DEV_CONFIG_N_LSS_DIR_MASK;
+ host->uhs2_caps.n_lss_dir_set =
+ host->uhs2_dev_prop.n_lss_dir_set;
+ payload[1] = (host->uhs2_dev_prop.n_lss_dir_set <<
+ UHS2_DEV_CONFIG_N_LSS_DIR_POS) |
+ host->uhs2_dev_prop.n_lss_sync_set;
+ } else {
+ host->uhs2_caps.n_lss_dir_set =
+ (host->uhs2_dev_prop.n_lss_dir >> 3) &
+ UHS2_DEV_CONFIG_N_LSS_DIR_MASK;
+ host->uhs2_dev_prop.n_lss_dir_set =
+ ((host->uhs2_caps.n_lss_dir >> 3) + 1) &
+ UHS2_DEV_CONFIG_N_LSS_DIR_MASK;
+ }
+
+ if (!gLssDir) {
+ host->uhs2_dev_prop.n_lss_dir_set = 0;
+ } else {
+ host->uhs2_dev_prop.n_lss_dir_set =
+ max((u8)gLssDir,
+ host->uhs2_dev_prop.n_lss_dir_set);
+ }
+
+ payload[1] = (host->uhs2_dev_prop.n_lss_dir_set <<
+ UHS2_DEV_CONFIG_N_LSS_DIR_POS) |
+ host->uhs2_dev_prop.n_lss_sync_set;
+ payload[0] = cpu_to_be32(payload[0]);
+ payload[1] = cpu_to_be32(payload[1]);
+
+ DBG("UHS2 SET PHY Settings %08x %08x\n",
+ payload[0], payload[1]);
+ DBG("host->flags=%08x dev_prop.speed_range_set=%x\n",
+ host->flags,
+ host->uhs2_dev_prop.speed_range_set);
+ DBG("dev_prop.n_lss_sync_set=%x host_caps.n_lss_sync_set=%x\n",
+ host->uhs2_dev_prop.n_lss_sync_set,
+ host->uhs2_caps.n_lss_sync_set);
+ DBG("dev_prop.n_lss_dir_set=%x host_caps.n_lss_dir_set=%x\n",
+ host->uhs2_dev_prop.n_lss_dir_set,
+ host->uhs2_caps.n_lss_dir_set);
+
+ DBG("Begin SET_COMMON_CFG header=0x%x arg=0x%x\n",
+ header, arg);
+ DBG("\t\tpayload[0]=0x%x payload[1]=0x%x\n",
+ payload[0], payload[1]);
+
+ resp_len = 4;
+ memset(resp, 0, sizeof(resp));
+
+ err = uhs2_cmd_assemble(&cmd, header, arg,
+ payload, plen, resp, resp_len);
+
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ if (!(resp[2]&0x80))
+ break;
+
+ DBG("%s: %s: UHS2 SET PHY Settings fail, res= 0x%x!\n",
+ mmc_hostname(host), __func__, resp[2]);
+ }
+
+ DBG("SET_COMMON_CFG: LINK-TRAN Settings.\n");
+ arg = ((UHS2_DEV_CONFIG_LINK_TRAN_SET & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_WRITE |
+ UHS2_NATIVE_CMD_PLEN_8B |
+ (UHS2_DEV_CONFIG_LINK_TRAN_SET >> 8);
+
+ plen = 2;
+ payload = kcalloc(plen, sizeof(u32), GFP_KERNEL);
+
+ if (host->uhs2_dev_prop.app_type == UHS2_DEV_CONFIG_APP_SD_MEM)
+ host->uhs2_dev_prop.maxblk_len_set =
+ UHS2_DEV_CONFIG_LT_SET_MAX_BLK_LEN;
+ else
+ host->uhs2_dev_prop.maxblk_len_set =
+ min(host->uhs2_dev_prop.maxblk_len,
+ host->uhs2_caps.maxblk_len);
+ host->uhs2_caps.maxblk_len_set = host->uhs2_dev_prop.maxblk_len_set;
+
+ host->uhs2_dev_prop.n_fcu_set =
+ min(host->uhs2_dev_prop.n_fcu,
+ host->uhs2_caps.n_fcu);
+ host->uhs2_caps.n_fcu_set = host->uhs2_dev_prop.n_fcu_set;
+
+ host->uhs2_dev_prop.n_data_gap_set =
+ max(nMinDataGap, host->uhs2_dev_prop.n_data_gap);
+
+ host->uhs2_caps.n_data_gap_set = host->uhs2_dev_prop.n_data_gap_set;
+
+ host->uhs2_caps.max_retry_set = 3;
+ host->uhs2_dev_prop.max_retry_set = host->uhs2_caps.max_retry_set;
+
+ payload[0] = (host->uhs2_dev_prop.maxblk_len_set <<
+ UHS2_DEV_CONFIG_MAX_BLK_LEN_POS) |
+ (host->uhs2_dev_prop.max_retry_set <<
+ UHS2_DEV_CONFIG_LT_SET_MAX_RETRY_POS) |
+ (host->uhs2_dev_prop.n_fcu_set <<
+ UHS2_DEV_CONFIG_N_FCU_POS);
+ payload[1] = host->uhs2_dev_prop.n_data_gap_set;
+ payload[0] = cpu_to_be32(payload[0]);
+ payload[1] = cpu_to_be32(payload[1]);
+
+ DBG("Begin SET_COMMON_CFG header=0x%x arg=0x%x\n", header, arg);
+ DBG("\t\tpayload[0]=0x%x payload[1]=0x%x\n", payload[0], payload[1]);
+
+ err = uhs2_cmd_assemble(&cmd, header, arg, payload, plen,
+ NULL, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ DBG("SET_COMMON_CFG: Set Config Completion.\n");
+ arg = ((UHS2_DEV_CONFIG_GEN_SET & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_WRITE |
+ UHS2_NATIVE_CMD_PLEN_8B |
+ (UHS2_DEV_CONFIG_GEN_SET >> 8);
+
+ plen = 2;
+ payload = kcalloc(plen, sizeof(u32), GFP_KERNEL);
+ payload[0] = 0;
+ payload[1] = UHS2_DEV_CONFIG_GEN_SET_CFG_COMPLETE;
+ payload[0] = cpu_to_be32(payload[0]);
+ payload[1] = cpu_to_be32(payload[1]);
+
+ DBG("Begin SET_COMMON_CFG, header=0x%x, arg=0x%x, payload[0] = 0x%x.\n",
+ header, arg, payload[0]);
+ resp_len = 5;
+ memset(resp, 0, sizeof(resp));
+ err = uhs2_cmd_assemble(&cmd, header, arg, payload, plen,
+ resp, resp_len);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ /* Set host Config Setting registers */
+ if (host->ops->uhs2_set_reg(host, SET_CONFIG)) {
+ pr_err("%s: %s: UHS2 SET_CONFIG fail!\n",
+ mmc_hostname(host), __func__);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int uhs2_go_dormant(struct mmc_host *host, bool hibernate)
+{
+ struct mmc_command cmd = {0};
+ u16 header = 0, arg = 0;
+ u32 *payload;
+ u8 plen = 1;
+ int err;
+
+ /* Disable Normal INT */
+ if (host->ops->uhs2_set_reg(host, DISABLE_INT)) {
+ pr_err("%s: %s: UHS2 DISABLE_INT fail!\n",
+ mmc_hostname(host), __func__);
+ return -EIO;
+ }
+
+ header = UHS2_NATIVE_PACKET | UHS2_PACKET_TYPE_CCMD |
+ host->uhs2_dev_prop.node_id;
+
+ arg = ((UHS2_DEV_CMD_GO_DORMANT_STATE & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_WRITE |
+ UHS2_NATIVE_CMD_PLEN_4B |
+ (UHS2_DEV_CMD_GO_DORMANT_STATE >> 8);
+
+ payload = kcalloc(plen, sizeof(u32), GFP_KERNEL);
+ if (!payload)
+ return -ENOMEM;
+ if (hibernate)
+ payload[0] = UHS2_DEV_CMD_DORMANT_HIBER;
+
+ DBG("Begin GO_DORMANT_STATE, header=0x%x, arg=0x%x, payload=0x%x.\n",
+ header, arg, payload[0]);
+ err = uhs2_cmd_assemble(&cmd, header, arg, payload, plen,
+ NULL, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ /* Check Dormant State in Present */
+ if (host->ops->uhs2_set_reg(host, CHECK_DORMANT)) {
+ pr_err("%s: %s: UHS2 GO_DORMANT_STATE fail!\n",
+ mmc_hostname(host), __func__);
+ return -EIO;
+ }
+
+ host->ops->uhs2_disable_clk(host);
+
+ return 0;
+}
+
+static int uhs2_change_speed(struct mmc_host *host)
+{
+ int err;
+
+ /* Change Speed Range */
+ if (host->ops->uhs2_set_reg(host, SET_SPEED_B)) {
+ pr_err("%s: %s: UHS2 SET_SPEED fail!\n",
+ mmc_hostname(host), __func__);
+ return -EIO;
+ }
+
+ err = uhs2_go_dormant(host, false);
+ if (err) {
+ pr_err("%s: %s: UHS2 GO_DORMANT_STATE fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ /* restore sd clock */
+ mdelay(5);
+ host->ops->uhs2_enable_clk(host);
+
+ /* Enable Normal INT */
+ if (host->ops->uhs2_set_reg(host, ENABLE_INT)) {
+ pr_err("%s: %s: UHS2 ENABLE_INT fail!\n",
+ mmc_hostname(host), __func__);
+ return -EIO;
+ }
+
+
+ if (host->ops->uhs2_detect_init(host)) {
+ pr_err("%s: %s: uhs2_detect_init() fail!\n",
+ mmc_hostname(host), __func__);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+int mmc_uhs2_try_frequency(struct mmc_host *host, unsigned int freq)
+{
+ int err = -EIO;
+
+ host->flags |= MMC_UHS2_SUPPORT;
+ host->f_init = freq;
+
+ pr_debug("%s: %s: trying to init card at %u Hz\n",
+ mmc_hostname(host), __func__, host->f_init);
+
+ uhs2_power_up(host);
+ if (host->ops->uhs2_detect_init(host)) {
+ pr_err("%s: fail to detect UHS2!\n", mmc_hostname(host));
+ err = UHS2_PHY_INIT_ERR;
+ goto init_fail;
+ }
+
+ if (uhs2_dev_init(host)) {
+ pr_err("%s: UHS2 DEVICE_INIT fail!\n", mmc_hostname(host));
+ goto init_fail;
+ }
+
+ if (uhs2_enum(host)) {
+ pr_err("%s: UHS2 ENUMERATE fail!\n", mmc_hostname(host));
+ goto init_fail;
+ }
+
+ if (uhs2_config_read(host)) {
+ pr_err("%s: UHS2 INQUIRY_CONFIG fail!\n", mmc_hostname(host));
+ goto init_fail;
+ }
+
+ if (uhs2_config_write(host)) {
+ pr_err("%s: UHS2 SET_COMMON_CONFIG fail!\n",
+ mmc_hostname(host));
+ goto init_fail;
+ }
+
+ mmc_delay(10);
+
+ /* Change to Speed Range B if it is supported */
+ if (host->flags & MMC_UHS2_SPEED_B)
+ if (uhs2_change_speed(host)) {
+ pr_err("%s: UHS2 uhs2_change_speed() fail!\n",
+ mmc_hostname(host));
+ goto init_fail;
+ }
+
+ host->flags |= MMC_UHS2_INITIALIZED;
+
+ mmc_send_if_cond(host, host->ocr_avail);
+
+ /* On market, only can some SD cards support UHS-II so only call SD
+ * attach process here.
+ */
+ err = mmc_attach_sd(host, true);
+
+ if (!err)
+ return 0;
+
+init_fail:
+ mmc_power_off(host);
+ if (host->flags & MMC_UHS2_INITIALIZED)
+ host->flags &= ~MMC_UHS2_INITIALIZED;
+ host->flags &= ~MMC_UHS2_SUPPORT;
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mmc_uhs2_try_frequency);
+
+int uhs2_abort_trans(struct mmc_host *host)
+{
+ struct mmc_command cmd = {0};
+ u16 header = 0, arg = 0;
+ int err;
+ u8 resp[10] = {0};
+ u8 resp_len = 4;
+
+ header = UHS2_NATIVE_PACKET | UHS2_PACKET_TYPE_CCMD |
+ host->uhs2_dev_prop.node_id;
+
+ arg = ((UHS2_DEV_CMD_TRANS_ABORT & 0xFF) << 8) |
+ UHS2_NATIVE_CMD_WRITE |
+ (UHS2_DEV_CMD_TRANS_ABORT >> 8);
+
+ err = uhs2_cmd_assemble(&cmd, header, arg, NULL, 0,
+ resp, resp_len);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD assembling err = 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err) {
+ pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n",
+ mmc_hostname(host), __func__, err);
+ return -EIO;
+ }
+
+#ifdef CONFIG_MMC_DEBUG
+ int i;
+
+ pr_warn("%s: Abort Tran response is: ", mmc_hostname(host));
+ for (i = 0; i < 0x4; i++)
+ pr_warn("%s: %02x\n", __func__, resp[i]);
+ pr_warn("\n");
+#endif
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(uhs2_abort_trans);
diff --git a/drivers/mmc/core/uhs2.h b/drivers/mmc/core/uhs2.h
new file mode 100644
index 000000000000..60fecf25db0a
--- /dev/null
+++ b/drivers/mmc/core/uhs2.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * driver/mmc/core/uhs2.h - UHS-II driver
+ *
+ * Header file for UHS-II packets, Host Controller registers and I/O
+ * accessors.
+ *
+ * Copyright (C) 2014 Intel Corp, All Rights Reserved.
+ */
+#ifndef MMC_UHS2_H
+#define MMC_UHS2_H
+
+#include <linux/mmc/core.h>
+#include <linux/mmc/host.h>
+
+#define UHS2_PHY_INIT_ERR 1
+
+extern int uhs2_prepare_sd_cmd(struct mmc_host *host, struct mmc_request *mrq);
+extern void uhs2_power_up(struct mmc_host *host);
+extern int mmc_uhs2_try_frequency(struct mmc_host *host, unsigned int freq);
+extern int uhs2_abort_trans(struct mmc_host *host);
+
+#endif /* MMC_UHS2_H */
--
2.24.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [RFC PATCH v2 3/6] mmc: host: Add UHS-II support in host layer
2020-01-09 9:13 [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
2020-01-09 9:14 ` [RFC PATCH v2 1/6] mmc: Add UHS-II support in public headers Ben Chuang
2020-01-09 9:14 ` [RFC PATCH v2 2/6] mmc: core: Add UHS-II support in core layer Ben Chuang
@ 2020-01-09 9:14 ` Ben Chuang
2020-03-17 8:17 ` Adrian Hunter
2020-01-09 9:14 ` [RFC PATCH v2 4/6] mmc: uhs2: Introduce a uhs2_post_attach_sd function Ben Chuang
` (3 subsequent siblings)
6 siblings, 1 reply; 12+ messages in thread
From: Ben Chuang @ 2020-01-09 9:14 UTC (permalink / raw)
To: adrian.hunter, ulf.hansson
Cc: linux-mmc, linux-kernel, greg.tu, ben.chuang, Ben Chuang,
kbuild test robot
From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Add UHS-II support in host layer
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
---
drivers/mmc/host/Makefile | 1 +
drivers/mmc/host/{sdhci.c => sdhci-core.c} | 276 ++++++--
drivers/mmc/host/sdhci-milbeaut.c | 4 +-
drivers/mmc/host/sdhci-of-arasan.c | 4 +-
drivers/mmc/host/sdhci-of-at91.c | 4 +-
drivers/mmc/host/sdhci-omap.c | 2 +-
drivers/mmc/host/sdhci-pci-core.c | 4 +-
drivers/mmc/host/sdhci-pxav3.c | 4 +-
drivers/mmc/host/sdhci-uhs2.c | 751 +++++++++++++++++++++
drivers/mmc/host/sdhci-uhs2.h | 34 +
drivers/mmc/host/sdhci-xenon.c | 4 +-
drivers/mmc/host/sdhci.h | 284 +++++++-
drivers/mmc/host/sdhci_am654.c | 4 +-
include/linux/mmc/uhs2.h | 270 ++++++++
14 files changed, 1583 insertions(+), 63 deletions(-)
rename drivers/mmc/host/{sdhci.c => sdhci-core.c} (94%)
create mode 100644 drivers/mmc/host/sdhci-uhs2.c
create mode 100644 drivers/mmc/host/sdhci-uhs2.h
create mode 100644 include/linux/mmc/uhs2.h
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 21d9089e5eda..6880d0a1ef16 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_MMC_PXA) += pxamci.o
obj-$(CONFIG_MMC_MXC) += mxcmmc.o
obj-$(CONFIG_MMC_MXS) += mxs-mmc.o
obj-$(CONFIG_MMC_SDHCI) += sdhci.o
+sdhci-y += sdhci-core.o sdhci-uhs2.o
obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
sdhci-pci-y += sdhci-pci-core.o sdhci-pci-o2micro.o sdhci-pci-arasan.o \
sdhci-pci-dwc-mshc.o sdhci-pci-gli.o
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci-core.c
similarity index 94%
rename from drivers/mmc/host/sdhci.c
rename to drivers/mmc/host/sdhci-core.c
index 1b1c26da3fe0..82184684f963 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci-core.c
@@ -30,8 +30,12 @@
#include <linux/mmc/card.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/slot-gpio.h>
+#include <linux/mmc/uhs2.h>
+#include <linux/pci.h>
#include "sdhci.h"
+#include "sdhci-uhs2.h"
+#include "sdhci-pci.h"
#define DRIVER_NAME "sdhci"
@@ -46,10 +50,6 @@
static unsigned int debug_quirks = 0;
static unsigned int debug_quirks2;
-static void sdhci_finish_data(struct sdhci_host *);
-
-static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
-
void sdhci_dumpregs(struct sdhci_host *host)
{
SDHCI_DUMP("============ SDHCI REGISTER DUMP ===========\n");
@@ -109,6 +109,29 @@ void sdhci_dumpregs(struct sdhci_host *host)
}
}
+ if (host->mmc && host->mmc->flags & MMC_UHS2_SUPPORT) {
+ SDHCI_DUMP("==================== UHS2 ==================\n");
+ SDHCI_DUMP("Blk Size: 0x%08x | Blk Cnt: 0x%08x\n",
+ sdhci_readw(host, SDHCI_UHS2_BLOCK_SIZE),
+ sdhci_readl(host, SDHCI_UHS2_BLOCK_COUNT));
+ SDHCI_DUMP("Cmd: 0x%08x | Trn mode: 0x%08x\n",
+ sdhci_readw(host, SDHCI_UHS2_COMMAND),
+ sdhci_readw(host, SDHCI_UHS2_TRANS_MODE));
+ SDHCI_DUMP("Int Stat: 0x%08x | Dev Sel : 0x%08x\n",
+ sdhci_readw(host, SDHCI_UHS2_DEV_INT_STATUS),
+ sdhci_readb(host, SDHCI_UHS2_DEV_SELECT));
+ SDHCI_DUMP("Dev Int Code: 0x%08x\n",
+ sdhci_readb(host, SDHCI_UHS2_DEV_INT_CODE));
+ SDHCI_DUMP("Reset: 0x%08x | Timer: 0x%08x\n",
+ sdhci_readw(host, SDHCI_UHS2_SW_RESET),
+ sdhci_readw(host, SDHCI_UHS2_TIMER_CTRL));
+ SDHCI_DUMP("ErrInt: 0x%08x | ErrIntEn: 0x%08x\n",
+ sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS),
+ sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS_EN));
+ SDHCI_DUMP("ErrSigEn: 0x%08x\n",
+ sdhci_readl(host, SDHCI_UHS2_ERR_INT_SIG_EN));
+ }
+
SDHCI_DUMP("============================================\n");
}
EXPORT_SYMBOL_GPL(sdhci_dumpregs);
@@ -187,13 +210,14 @@ static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
pm_runtime_get_noresume(host->mmc->parent);
}
-static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
+void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
{
if (!host->bus_on)
return;
host->bus_on = false;
pm_runtime_put_noidle(host->mmc->parent);
}
+EXPORT_SYMBOL_GPL(sdhci_runtime_pm_bus_off);
void sdhci_reset(struct sdhci_host *host, u8 mask)
{
@@ -1022,6 +1046,9 @@ static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
}
sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL);
+
+ if (host->mmc->flags & MMC_UHS2_SUPPORT)
+ sdhci_uhs2_set_timeout(host);
}
}
@@ -1133,21 +1160,29 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
sdhci_set_transfer_irqs(host);
- /* Set the DMA boundary value and block size */
- sdhci_writew(host, SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz),
- SDHCI_BLOCK_SIZE);
-
- /*
- * For Version 4.10 onwards, if v4 mode is enabled, 32-bit Block Count
- * can be supported, in that case 16-bit block count register must be 0.
- */
- if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&
- (host->quirks2 & SDHCI_QUIRK2_USE_32BIT_BLK_CNT)) {
- if (sdhci_readw(host, SDHCI_BLOCK_COUNT))
- sdhci_writew(host, 0, SDHCI_BLOCK_COUNT);
- sdhci_writew(host, data->blocks, SDHCI_32BIT_BLK_CNT);
+ if (host->mmc->flags & MMC_UHS2_SUPPORT &&
+ host->mmc->flags & MMC_UHS2_INITIALIZED) {
+ sdhci_writew(host, data->blksz, SDHCI_UHS2_BLOCK_SIZE);
+ sdhci_writew(host, data->blocks, SDHCI_UHS2_BLOCK_COUNT);
} else {
- sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
+ /* Set the DMA boundary value and block size */
+ sdhci_writew(host,
+ SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz),
+ SDHCI_BLOCK_SIZE);
+
+ /*
+ * For Version 4.10 onwards, if v4 mode is enabled, 32-bit
+ * Block Count can be supported, in that case 16-bit block
+ * count register must be 0.
+ */
+ if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&
+ (host->quirks2 & SDHCI_QUIRK2_USE_32BIT_BLK_CNT)) {
+ if (sdhci_readw(host, SDHCI_BLOCK_COUNT))
+ sdhci_writew(host, 0, SDHCI_BLOCK_COUNT);
+ sdhci_writew(host, data->blocks, SDHCI_32BIT_BLK_CNT);
+ } else {
+ sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
+ }
}
}
@@ -1201,6 +1236,11 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
u16 mode = 0;
struct mmc_data *data = cmd->data;
+ if (host->mmc->flags & MMC_UHS2_SUPPORT) {
+ sdhci_uhs2_set_transfer_mode(host, cmd);
+ return;
+ }
+
if (data == NULL) {
if (host->quirks2 &
SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD) {
@@ -1283,14 +1323,15 @@ static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
sdhci_led_deactivate(host);
}
-static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
+void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
{
__sdhci_finish_mrq(host, mrq);
queue_work(host->complete_wq, &host->complete_work);
}
+EXPORT_SYMBOL_GPL(sdhci_finish_mrq);
-static void sdhci_finish_data(struct sdhci_host *host)
+void sdhci_finish_data(struct sdhci_host *host)
{
struct mmc_command *data_cmd = host->data_cmd;
struct mmc_data *data = host->data;
@@ -1324,6 +1365,11 @@ static void sdhci_finish_data(struct sdhci_host *host)
else
data->bytes_xfered = data->blksz * data->blocks;
+ if (host->mmc->flags & MMC_UHS2_INITIALIZED) {
+ __sdhci_finish_mrq(host, data->mrq);
+ return;
+ }
+
/*
* Need to send CMD12 if -
* a) open-ended multiblock transfer (no CMD23)
@@ -1348,6 +1394,7 @@ static void sdhci_finish_data(struct sdhci_host *host)
__sdhci_finish_mrq(host, data->mrq);
}
}
+EXPORT_SYMBOL_GPL(sdhci_finish_data);
void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
{
@@ -1397,8 +1444,6 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
sdhci_prepare_data(host, cmd);
- sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT);
-
sdhci_set_transfer_mode(host, cmd);
if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
@@ -1437,6 +1482,12 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
timeout += 10 * HZ;
sdhci_mod_timer(host, cmd->mrq, timeout);
+ if (host->mmc->flags & MMC_UHS2_SUPPORT) {
+ sdhci_uhs2_send_command(host, cmd);
+ return;
+ }
+ sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT);
+
sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);
}
EXPORT_SYMBOL_GPL(sdhci_send_command);
@@ -1464,10 +1515,13 @@ static void sdhci_read_rsp_136(struct sdhci_host *host, struct mmc_command *cmd)
static void sdhci_finish_command(struct sdhci_host *host)
{
struct mmc_command *cmd = host->cmd;
+ int uhs2_flag = 0;
- host->cmd = NULL;
-
- if (cmd->flags & MMC_RSP_PRESENT) {
+ if (host->mmc->flags & MMC_UHS2_SUPPORT) {
+ sdhci_uhs2_finish_command(host);
+ uhs2_flag = 1;
+ } else if (cmd->flags & MMC_RSP_PRESENT) {
+ host->cmd = NULL;
if (cmd->flags & MMC_RSP_136) {
sdhci_read_rsp_136(host, cmd);
} else {
@@ -1475,6 +1529,9 @@ static void sdhci_finish_command(struct sdhci_host *host)
}
}
+ if (!uhs2_flag)
+ host->cmd = NULL;
+
if (cmd->mrq->cap_cmd_during_tfr && cmd == cmd->mrq->cmd)
mmc_command_done(host->mmc, cmd->mrq);
@@ -1494,6 +1551,7 @@ static void sdhci_finish_command(struct sdhci_host *host)
} else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) &&
cmd == host->data_cmd) {
/* Command complete before busy is ended */
+ host->cmd = NULL;
return;
}
}
@@ -1510,6 +1568,8 @@ static void sdhci_finish_command(struct sdhci_host *host)
if (!cmd->data)
__sdhci_finish_mrq(host, cmd->mrq);
}
+
+ host->cmd = NULL;
}
static u16 sdhci_get_preset_value(struct sdhci_host *host)
@@ -1537,6 +1597,9 @@ 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_UHS2:
+ preset = sdhci_readw(host, SDHCI_PRESET_FOR_UHS2);
+ break;
default:
pr_warn("%s: Invalid UHS-I mode selected\n",
mmc_hostname(host->mmc));
@@ -1708,12 +1771,16 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
EXPORT_SYMBOL_GPL(sdhci_set_clock);
static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
struct mmc_host *mmc = host->mmc;
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
+ if (mmc->caps & MMC_CAP_UHS2 &&
+ !IS_ERR(mmc->supply.vmmc2))
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc2, vdd2);
+
if (mode != MMC_POWER_OFF)
sdhci_writeb(host, SDHCI_POWER_ON, SDHCI_POWER_CONTROL);
else
@@ -1721,7 +1788,7 @@ static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode,
}
void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
u8 pwr = 0;
@@ -1752,6 +1819,20 @@ void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
}
}
+ if (mode != MMC_POWER_OFF) {
+ if (vdd2 != (unsigned short)-1) {
+ switch (1 << vdd2) {
+ case MMC_VDD2_165_195:
+ pwr |= SDHCI_VDD2_POWER_180;
+ break;
+ default:
+ WARN(1, "%s: Invalid vdd2 %#x\n",
+ mmc_hostname(host->mmc), vdd2);
+ break;
+ }
+ }
+ }
+
if (host->pwr == pwr)
return;
@@ -1778,8 +1859,13 @@ void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
pwr |= SDHCI_POWER_ON;
+ if (vdd2 != (unsigned short)-1)
+ pwr |= SDHCI_VDD2_POWER_ON;
+ sdhci_writeb(host, pwr&0xf, SDHCI_POWER_CONTROL);
+ mdelay(5);
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
+ mdelay(5);
if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)
sdhci_runtime_pm_bus_on(host);
@@ -1795,12 +1881,12 @@ void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
EXPORT_SYMBOL_GPL(sdhci_set_power_noreg);
void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
if (IS_ERR(host->mmc->supply.vmmc))
- sdhci_set_power_noreg(host, mode, vdd);
+ sdhci_set_power_noreg(host, mode, vdd, vdd2);
else
- sdhci_set_power_reg(host, mode, vdd);
+ sdhci_set_power_reg(host, mode, vdd, vdd2);
}
EXPORT_SYMBOL_GPL(sdhci_set_power);
@@ -1899,6 +1985,7 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
u8 ctrl;
+ u16 ctrl_2;
if (ios->power_mode == MMC_POWER_UNDEFINED)
return;
@@ -1907,6 +1994,10 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (!IS_ERR(mmc->supply.vmmc) &&
ios->power_mode == MMC_POWER_OFF)
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
+ if (host->mmc->caps & MMC_CAP_UHS2 &&
+ !IS_ERR(mmc->supply.vmmc2) &&
+ ios->power_mode == MMC_POWER_OFF)
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc2, 0);
return;
}
@@ -1925,6 +2016,9 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
sdhci_enable_preset_value(host, false);
if (!ios->clock || ios->clock != host->clock) {
+ if (ios->timing == MMC_TIMING_UHS2)
+ host->timing = ios->timing;
+
host->ops->set_clock(host, ios->clock);
host->clock = ios->clock;
@@ -1942,9 +2036,19 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
if (host->ops->set_power)
- host->ops->set_power(host, ios->power_mode, ios->vdd);
+ host->ops->set_power(host, ios->power_mode, ios->vdd, -1);
else
- sdhci_set_power(host, ios->power_mode, ios->vdd);
+ sdhci_set_power(host, ios->power_mode, ios->vdd, -1);
+
+ /* 4.0 host support */
+ if (host->version >= SDHCI_SPEC_400) {
+ /* UHS2 Support */
+ if (host->mmc->flags & MMC_UHS2_SUPPORT &&
+ host->mmc->caps & MMC_CAP_UHS2) {
+ sdhci_uhs2_do_set_ios(host, ios);
+ return;
+ }
+ }
if (host->ops->platform_send_init_74_clocks)
host->ops->platform_send_init_74_clocks(host, ios->power_mode);
@@ -1969,7 +2073,7 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
if (host->version >= SDHCI_SPEC_300) {
- u16 clk, ctrl_2;
+ u16 clk;
if (!host->preset_enabled) {
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
@@ -2181,8 +2285,12 @@ int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
/*
* Signal Voltage Switching is only applicable for Host Controllers
* v3.00 and above.
+ * But for UHS2, the signal voltage is supplied by vdd2 which is
+ * already 1.8v so no voltage siwtch required.
*/
- if (host->version < SDHCI_SPEC_300)
+ if (host->version < SDHCI_SPEC_300 ||
+ (host->version >= SDHCI_SPEC_400 &&
+ host->flags & SDHCI_USE_UHS2))
return 0;
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
@@ -2511,7 +2619,7 @@ 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)
@@ -2539,6 +2647,7 @@ 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)
@@ -2611,6 +2720,64 @@ static void sdhci_card_event(struct mmc_host *mmc)
spin_unlock_irqrestore(&host->lock, flags);
}
+static int sdhci_uhs2_detect_init(struct mmc_host *mmc)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ int ret;
+
+ ret = sdhci_uhs2_do_detect_init(host);
+
+ return ret;
+}
+
+static int sdhci_uhs2_set_reg(struct mmc_host *mmc, enum uhs2_act act)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ int ret;
+
+ ret = sdhci_uhs2_do_set_reg(host, act);
+
+ return ret;
+}
+
+void sdhci_uhs2_disable_clk(struct mmc_host *mmc)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ u16 clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+
+ clk &= ~SDHCI_CLOCK_CARD_EN;
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_disable_clk);
+
+void sdhci_uhs2_enable_clk(struct mmc_host *mmc)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ u16 clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ ktime_t timeout;
+
+ clk |= SDHCI_CLOCK_CARD_EN;
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+ /* Wait max 20 ms */
+ timeout = ktime_add_ms(ktime_get(), 20);
+ while (1) {
+ bool timedout = ktime_after(ktime_get(), timeout);
+
+ clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ if (clk & SDHCI_CLOCK_INT_STABLE)
+ break;
+ if (timedout) {
+ pr_err("%s: Internal clock never stabilised.\n",
+ mmc_hostname(host->mmc));
+ sdhci_dumpregs(host);
+ return;
+ }
+ udelay(10);
+ }
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_enable_clk);
+
static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.post_req = sdhci_post_req,
@@ -2626,6 +2793,10 @@ static const struct mmc_host_ops sdhci_ops = {
.execute_tuning = sdhci_execute_tuning,
.card_event = sdhci_card_event,
.card_busy = sdhci_card_busy,
+ .uhs2_detect_init = sdhci_uhs2_detect_init,
+ .uhs2_set_reg = sdhci_uhs2_set_reg,
+ .uhs2_disable_clk = sdhci_uhs2_disable_clk,
+ .uhs2_enable_clk = sdhci_uhs2_enable_clk,
};
/*****************************************************************************\
@@ -2726,11 +2897,16 @@ static bool sdhci_request_done(struct sdhci_host *host)
/* This is to force an update */
host->ops->set_clock(host, host->clock);
- /* Spec says we should do both at the same time, but Ricoh
- controllers do not like that. */
- sdhci_do_reset(host, SDHCI_RESET_CMD);
- sdhci_do_reset(host, SDHCI_RESET_DATA);
-
+ if (host->mmc->flags & MMC_UHS2_INITIALIZED) {
+ sdhci_uhs2_reset(host, SDHCI_UHS2_SW_RESET_SD);
+ } else {
+ /*
+ * Spec says we should do both at the same time, but
+ * Ricoh controllers do not like that.
+ */
+ sdhci_do_reset(host, SDHCI_RESET_CMD);
+ sdhci_do_reset(host, SDHCI_RESET_DATA);
+ }
host->pending_reset = false;
}
@@ -3082,6 +3258,11 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
SDHCI_INT_BUS_POWER);
sdhci_writel(host, mask, SDHCI_INT_STATUS);
+ if (intmask & SDHCI_INT_ERROR &&
+ host->mmc->flags & MMC_UHS2_SUPPORT) {
+ sdhci_uhs2_irq(host);
+ }
+
if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) {
u32 present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
SDHCI_CARD_PRESENT;
@@ -3770,6 +3951,13 @@ int sdhci_setup_host(struct sdhci_host *host)
if (host->quirks & SDHCI_QUIRK_BROKEN_CQE)
mmc->caps2 &= ~MMC_CAP2_CQE;
+ if ((host->version >= SDHCI_SPEC_400) &&
+ (host->caps1 & SDHCI_SUPPORT_UHS2) &&
+ host->v4_mode) {
+ mmc->caps |= MMC_CAP_UHS2;
+ mmc->flags |= MMC_UHS2_SUPPORT;
+ }
+
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
else if (!(host->caps & SDHCI_CAN_DO_SDMA))
@@ -4248,6 +4436,9 @@ int sdhci_setup_host(struct sdhci_host *host)
/* This may alter mmc->*_blk_* parameters */
sdhci_allocate_bounce_buffer(host);
+ if (host->version >= SDHCI_SPEC_400)
+ sdhci_uhs2_add_host(host, host->caps1);
+
return 0;
unreg:
@@ -4332,6 +4523,7 @@ int __sdhci_add_host(struct sdhci_host *host)
unled:
sdhci_led_unregister(host);
unirq:
+ sdhci_uhs2_remove_host(host, 0);
sdhci_do_reset(host, SDHCI_RESET_ALL);
sdhci_writel(host, 0, SDHCI_INT_ENABLE);
sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
@@ -4389,6 +4581,8 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
sdhci_led_unregister(host);
+ sdhci_uhs2_remove_host(host, dead);
+
if (!dead)
sdhci_do_reset(host, SDHCI_RESET_ALL);
diff --git a/drivers/mmc/host/sdhci-milbeaut.c b/drivers/mmc/host/sdhci-milbeaut.c
index a1aa21b9ae1c..1c076f885670 100644
--- a/drivers/mmc/host/sdhci-milbeaut.c
+++ b/drivers/mmc/host/sdhci-milbeaut.c
@@ -122,14 +122,14 @@ static void sdhci_milbeaut_reset(struct sdhci_host *host, u8 mask)
}
static void sdhci_milbeaut_set_power(struct sdhci_host *host,
- unsigned char mode, unsigned short vdd)
+ unsigned char mode, unsigned short vdd, unsigned short vdd2)
{
if (!IS_ERR(host->mmc->supply.vmmc)) {
struct mmc_host *mmc = host->mmc;
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
}
- sdhci_set_power_noreg(host, mode, vdd);
+ sdhci_set_power_noreg(host, mode, vdd, -1);
}
static const struct sdhci_ops sdhci_milbeaut_ops = {
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index e49b44b4d82e..7bc5c60544f1 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -326,14 +326,14 @@ static int sdhci_arasan_voltage_switch(struct mmc_host *mmc,
}
static void sdhci_arasan_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
if (!IS_ERR(host->mmc->supply.vmmc)) {
struct mmc_host *mmc = host->mmc;
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
}
- sdhci_set_power_noreg(host, mode, vdd);
+ sdhci_set_power_noreg(host, mode, vdd, -1);
}
static const struct sdhci_ops sdhci_arasan_ops = {
diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
index 5959e394b416..59237568fdc3 100644
--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -100,14 +100,14 @@ static void sdhci_at91_set_clock(struct sdhci_host *host, unsigned int clock)
* an external regulator.
*/
static void sdhci_at91_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
if (!IS_ERR(host->mmc->supply.vmmc)) {
struct mmc_host *mmc = host->mmc;
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
}
- sdhci_set_power_noreg(host, mode, vdd);
+ sdhci_set_power_noreg(host, mode, vdd, -1);
}
static void sdhci_at91_set_uhs_signaling(struct sdhci_host *host,
diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c
index 083e7e053c95..3b59c20e5f58 100644
--- a/drivers/mmc/host/sdhci-omap.c
+++ b/drivers/mmc/host/sdhci-omap.c
@@ -671,7 +671,7 @@ static void sdhci_omap_set_clock(struct sdhci_host *host, unsigned int clock)
}
static void sdhci_omap_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
struct mmc_host *mmc = host->mmc;
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index 5091e2c1c0e5..1cfb22276047 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -630,12 +630,12 @@ static int bxt_get_cd(struct mmc_host *mmc)
#define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
int cntr;
u8 reg;
- sdhci_set_power(host, mode, vdd);
+ sdhci_set_power(host, mode, vdd, -1);
if (mode == MMC_POWER_OFF)
return;
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index e55037ceda73..457e9425339a 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -298,12 +298,12 @@ static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
}
static void pxav3_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
struct mmc_host *mmc = host->mmc;
u8 pwr = host->pwr;
- sdhci_set_power_noreg(host, mode, vdd);
+ sdhci_set_power_noreg(host, mode, vdd, -1);
if (host->pwr == pwr)
return;
diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c
new file mode 100644
index 000000000000..e9c42894185a
--- /dev/null
+++ b/drivers/mmc/host/sdhci-uhs2.c
@@ -0,0 +1,751 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * linux/drivers/mmc/host/sdhci_uhs2.c - Secure Digital Host Controller
+ * Interface driver
+ *
+ * Copyright (C) 2014 Intel Corp, All Rights Reserved.
+ */
+
+#include <linux/delay.h>
+#include <linux/regulator/consumer.h>
+
+#include <linux/mmc/mmc.h>
+
+#include "sdhci.h"
+#include "sdhci-uhs2.h"
+
+#define DRIVER_NAME "sdhci_uhs2"
+#define DBG(f, x...) \
+ pr_debug(DRIVER_NAME " [%s()]: " f, __func__, ## x)
+
+static void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set)
+{
+ u32 ier;
+
+ ier = sdhci_readl(host, SDHCI_INT_ENABLE);
+ ier &= ~clear;
+ ier |= set;
+ sdhci_writel(host, ier, SDHCI_INT_ENABLE);
+ sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE);
+}
+
+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);
+
+void sdhci_uhs2_reset(struct sdhci_host *host, u16 mask)
+{
+ unsigned long timeout;
+
+ if (!(host->mmc->caps & MMC_CAP_UHS2))
+ return;
+
+ sdhci_writew(host, mask, SDHCI_UHS2_SW_RESET);
+
+ if (mask & SDHCI_UHS2_SW_RESET_FULL) {
+ host->clock = 0;
+ /* Reset-all turns off SD Bus Power */
+ if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)
+ sdhci_runtime_pm_bus_off(host);
+ }
+
+ /* Wait max 100 ms */
+ timeout = 10000;
+
+ /* hw clears the bit when it's done */
+ while (sdhci_readw(host, SDHCI_UHS2_SW_RESET) & mask) {
+ if (timeout == 0) {
+ pr_err("%s: %s: Reset 0x%x never completed.\n",
+ __func__, mmc_hostname(host->mmc), (int)mask);
+ pr_err("%s: clean reset bit\n",
+ mmc_hostname(host->mmc));
+ sdhci_writeb(host, 0, SDHCI_UHS2_SW_RESET);
+ return;
+ }
+ timeout--;
+ udelay(10);
+ }
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_reset);
+
+static u8 sdhci_calc_timeout_uhs2(struct sdhci_host *host, u8 *cmd_res,
+ u8 *dead_lock)
+{
+ u8 count;
+ unsigned int cmd_res_timeout, dead_lock_timeout, current_timeout;
+
+ /*
+ * If the host controller provides us with an incorrect timeout
+ * value, just skip the check and use 0xE. The hardware may take
+ * longer to time out, but that's much better than having a too-short
+ * timeout value.
+ */
+ if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) {
+ *cmd_res = 0xE;
+ *dead_lock = 0xE;
+ return 0xE;
+ }
+
+ /* timeout in us */
+ cmd_res_timeout = 5 * 1000;
+ dead_lock_timeout = 1 * 1000 * 1000;
+
+ /*
+ * Figure out needed cycles.
+ * We do this in steps in order to fit inside a 32 bit int.
+ * The first step is the minimum timeout, which will have a
+ * minimum resolution of 6 bits:
+ * (1) 2^13*1000 > 2^22,
+ * (2) host->timeout_clk < 2^16
+ * =>
+ * (1) / (2) > 2^6
+ */
+ count = 0;
+ current_timeout = (1 << 13) * 1000 / host->timeout_clk;
+ while (current_timeout < cmd_res_timeout) {
+ count++;
+ current_timeout <<= 1;
+ if (count >= 0xF)
+ break;
+ }
+
+ if (count >= 0xF) {
+ DBG("%s: Too large timeout 0x%x requested for CMD_RES!\n",
+ mmc_hostname(host->mmc), count);
+ count = 0xE;
+ }
+ *cmd_res = count;
+
+ count = 0;
+ current_timeout = (1 << 13) * 1000 / host->timeout_clk;
+ while (current_timeout < dead_lock_timeout) {
+ count++;
+ current_timeout <<= 1;
+ if (count >= 0xF)
+ break;
+ }
+
+ if (count >= 0xF) {
+ DBG("%s: Too large timeout 0x%x requested for DEADLOCK!\n",
+ mmc_hostname(host->mmc), count);
+ count = 0xE;
+ }
+ *dead_lock = count;
+
+ return count;
+}
+
+void sdhci_uhs2_set_timeout(struct sdhci_host *host)
+{
+ u8 cmd_res, dead_lock;
+
+ sdhci_calc_timeout_uhs2(host, &cmd_res, &dead_lock);
+ cmd_res |= dead_lock << SDHCI_UHS2_TIMER_CTRL_DEADLOCK_SHIFT;
+ sdhci_writeb(host, cmd_res, SDHCI_UHS2_TIMER_CTRL);
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_set_timeout);
+
+void sdhci_uhs2_set_transfer_mode(struct sdhci_host *host,
+ struct mmc_command *cmd)
+{
+ u16 mode;
+ struct mmc_data *data = cmd->data;
+ u16 arg;
+
+ if (data == NULL) {
+ /* clear Auto CMD settings for no data CMDs */
+ arg = cmd->uhs2_cmd->arg;
+ if ((((arg & 0xF) << 8) | ((arg >> 8) & 0xFF)) ==
+ UHS2_DEV_CMD_TRANS_ABORT) {
+ mode = 0;
+ } else {
+ mode = sdhci_readw(host, SDHCI_UHS2_TRANS_MODE);
+ if (cmd->opcode == MMC_STOP_TRANSMISSION ||
+ cmd->opcode == MMC_ERASE)
+ mode |= SDHCI_UHS2_TRNS_WAIT_EBSY;
+ else {
+ /* send status mode */
+ if (cmd->opcode == MMC_SEND_STATUS)
+ mode = 0;
+ }
+ }
+#ifdef CONFIG_MMC_DEBUG
+ DBG("UHS2 no data trans mode is 0x%x.\n", mode);
+#endif
+ sdhci_writew(host, mode, SDHCI_UHS2_TRANS_MODE);
+ return;
+ }
+
+ WARN_ON(!host->data);
+
+ mode = SDHCI_UHS2_TRNS_BLK_CNT_EN | SDHCI_UHS2_TRNS_WAIT_EBSY;
+ if (data->flags & MMC_DATA_WRITE)
+ mode |= SDHCI_UHS2_TRNS_DATA_TRNS_WRT;
+
+ if (data->blocks == 1 &&
+ data->blksz != 512 &&
+ cmd->opcode != MMC_READ_SINGLE_BLOCK &&
+ cmd->opcode != MMC_WRITE_BLOCK) {
+ mode &= ~SDHCI_UHS2_TRNS_BLK_CNT_EN;
+ mode |= SDHCI_UHS2_TRNS_BLK_BYTE_MODE;
+ }
+
+ if (host->flags & SDHCI_REQ_USE_DMA)
+ mode |= SDHCI_UHS2_TRNS_DMA;
+
+ if ((host->mmc->flags & MMC_UHS2_2L_HD) && !cmd->uhs2_tmode0_flag)
+ mode |= SDHCI_UHS2_TRNS_2L_HD;
+
+ sdhci_writew(host, mode, SDHCI_UHS2_TRANS_MODE);
+
+#ifdef CONFIG_MMC_DEBUG
+ DBG("UHS2 trans mode is 0x%x.\n", mode);
+#endif
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_set_transfer_mode);
+
+void sdhci_uhs2_send_command(struct sdhci_host *host, struct mmc_command *cmd)
+{
+ int i, j;
+ int cmd_reg;
+
+ if (host->mmc->flags & MMC_UHS2_INITIALIZED) {
+ if (cmd->uhs2_cmd == NULL) {
+ pr_err("%s: fatal error, no uhs2_cmd!\n",
+ mmc_hostname(host->mmc));
+ return;
+ }
+ }
+
+ i = 0;
+ sdhci_writel(host,
+ ((u32)cmd->uhs2_cmd->arg << 16) | (u32)cmd->uhs2_cmd->header,
+ SDHCI_UHS2_CMD_PACKET + i);
+ i += 4;
+
+ /*
+ * Per spec, playload (config) should be MSB before sending out.
+ * But we don't need convert here because had set payload as
+ * MSB when preparing config read/write commands.
+ */
+ for (j = 0; j < cmd->uhs2_cmd->payload_len/sizeof(u32); j++) {
+ sdhci_writel(host, *(cmd->uhs2_cmd->payload + j),
+ SDHCI_UHS2_CMD_PACKET + i);
+ i += 4;
+ }
+
+ for ( ; i < SDHCI_UHS2_CMD_PACK_MAX_LEN; i += 4)
+ sdhci_writel(host, 0, SDHCI_UHS2_CMD_PACKET+i);
+
+#ifdef CONFIG_MMC_DEBUG
+ DBG("UHS2 CMD packet_len = %d.\n", cmd->uhs2_cmd->packet_len);
+ for (i = 0; i < cmd->uhs2_cmd->packet_len; i++)
+ DBG("UHS2 CMD_PACKET[%d] = 0x%x.\n", i,
+ sdhci_readb(host, SDHCI_UHS2_CMD_PACKET + i));
+#endif
+
+ cmd_reg = cmd->uhs2_cmd->packet_len <<
+ SDHCI_UHS2_COMMAND_PACK_LEN_SHIFT;
+ if ((cmd->flags & MMC_CMD_MASK) == MMC_CMD_ADTC)
+ cmd_reg |= SDHCI_UHS2_COMMAND_DATA;
+ if (cmd->opcode == MMC_STOP_TRANSMISSION)
+ cmd_reg |= SDHCI_UHS2_COMMAND_CMD12;
+
+ /* UHS2 Native ABORT */
+ if ((cmd->uhs2_cmd->header & UHS2_NATIVE_PACKET) &&
+ ((((cmd->uhs2_cmd->arg & 0xF) << 8) |
+ ((cmd->uhs2_cmd->arg >> 8) & 0xFF)) == UHS2_DEV_CMD_TRANS_ABORT))
+ cmd_reg |= SDHCI_UHS2_COMMAND_TRNS_ABORT;
+
+ /* UHS2 Native DORMANT */
+ if ((cmd->uhs2_cmd->header & UHS2_NATIVE_PACKET) &&
+ ((((cmd->uhs2_cmd->arg & 0xF) << 8) |
+ ((cmd->uhs2_cmd->arg >> 8) & 0xFF)) ==
+ UHS2_DEV_CMD_GO_DORMANT_STATE))
+ cmd_reg |= SDHCI_UHS2_COMMAND_DORMANT;
+
+ DBG("0x%x is set to UHS2 CMD register.\n", cmd_reg);
+
+ sdhci_writew(host, cmd_reg, SDHCI_UHS2_COMMAND);
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_send_command);
+
+void sdhci_uhs2_finish_command(struct sdhci_host *host)
+{
+ int i;
+ bool bReadA0 = 0;
+
+ if (host->mmc->flags & MMC_UHS2_INITIALIZED) {
+ u8 resp;
+ u8 ecode;
+
+ resp = sdhci_readb(host, SDHCI_UHS2_RESPONSE + 2);
+ if (resp & UHS2_RES_NACK_MASK) {
+ ecode = (resp >> UHS2_RES_ECODE_POS) &
+ UHS2_RES_ECODE_MASK;
+ pr_err("%s: NACK is got, ECODE=0x%x.\n",
+ mmc_hostname(host->mmc), ecode);
+ }
+ bReadA0 = 1;
+ }
+
+ if (host->cmd->uhs2_resp &&
+ host->cmd->uhs2_resp_len &&
+ host->cmd->uhs2_resp_len <= 20) {
+ /* Get whole response of some native CCMD, like
+ * DEVICE_INIT, ENUMERATE.
+ */
+ for (i = 0; i < host->cmd->uhs2_resp_len; i++)
+ host->cmd->uhs2_resp[i] = sdhci_readb(host,
+ SDHCI_UHS2_RESPONSE + i);
+ } else {
+ /* Get SD CMD response and Payload for some read
+ * CCMD, like INQUIRY_CFG.
+ */
+ /* Per spec (p136), payload field is divided into
+ * a unit of DWORD and transmission order within
+ * a DWORD is big endian.
+ */
+ if (!bReadA0)
+ sdhci_readl(host, SDHCI_UHS2_RESPONSE);
+ for (i = 4; i < 20; i += 4) {
+ host->cmd->resp[i/4-1] = (sdhci_readb(host,
+ SDHCI_UHS2_RESPONSE + i) << 24) |
+ (sdhci_readb(host,
+ SDHCI_UHS2_RESPONSE + i + 1) << 16) |
+ (sdhci_readb(host,
+ SDHCI_UHS2_RESPONSE + i + 2) << 8) |
+ sdhci_readb(host,
+ SDHCI_UHS2_RESPONSE + i + 3);
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_finish_command);
+
+void sdhci_uhs2_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
+{
+ u8 cmd_res, dead_lock;
+ u16 ctrl_2;
+ unsigned long flags;
+
+ 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_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);
+
+ /* Set VDD2 */
+ ios->vdd = fls(host->mmc->ocr_avail) - 1;
+ ios->vdd2 = fls(host->mmc->ocr_avail_uhs2) - 1;
+
+ sdhci_set_power(host, ios->power_mode, ios->vdd, ios->vdd2);
+ udelay(100);
+
+ host->timing = ios->timing;
+ sdhci_set_clock(host, host->clock);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_do_set_ios);
+
+static int sdhci_uhs2_interface_detect(struct sdhci_host *host)
+{
+ int timeout = 100;
+
+ udelay(200); /* wait for 200us before check */
+
+ while (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
+ SDHCI_UHS2_IF_DETECT)) {
+ if (timeout == 0) {
+ pr_warn("%s: not detect UHS2 interface in 200us.\n",
+ mmc_hostname(host->mmc));
+ sdhci_dumpregs(host);
+ return -EIO;
+ }
+ timeout--;
+ mdelay(1);
+ }
+
+ /* Enable UHS2 error interrupts */
+ sdhci_uhs2_clear_set_irqs(host, SDHCI_INT_ALL_MASK,
+ SDHCI_UHS2_ERR_INT_STATUS_MASK);
+
+ timeout = 150;
+ while (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
+ SDHCI_UHS2_LANE_SYNC)) {
+ if (timeout == 0) {
+ pr_warn("%s: UHS2 Lane sync fail in 150ms.\n",
+ mmc_hostname(host->mmc));
+ sdhci_dumpregs(host);
+ return -EIO;
+ }
+ timeout--;
+ mdelay(1);
+ }
+
+ DBG("%s: UHS2 Lane synchronized in UHS2 mode, PHY is initializaed.\n",
+ mmc_hostname(host->mmc));
+ return 0;
+}
+
+static int sdhci_uhs2_init(struct sdhci_host *host)
+{
+ u16 caps_ptr = 0;
+ u32 caps_gen = 0;
+ u32 caps_phy = 0;
+ u32 caps_tran[2] = {0, 0};
+ struct mmc_host *mmc = host->mmc;
+
+ /*
+ * TODO: may add corresponding members in sdhci_host to
+ * keep these caps.
+ */
+ caps_ptr = sdhci_readw(host, SDHCI_UHS2_HOST_CAPS_PTR);
+ if (caps_ptr < 0x100 || caps_ptr > 0x1FF) {
+ pr_err("%s: SDHCI_UHS2_HOST_CAPS_PTR(%d) is wrong.\n",
+ mmc_hostname(mmc), caps_ptr);
+ return -ENODEV;
+ }
+ caps_gen = sdhci_readl(host,
+ caps_ptr + SDHCI_UHS2_HOST_CAPS_GEN_OFFSET);
+ caps_phy = sdhci_readl(host,
+ caps_ptr + SDHCI_UHS2_HOST_CAPS_PHY_OFFSET);
+ caps_tran[0] = sdhci_readl(host,
+ caps_ptr + SDHCI_UHS2_HOST_CAPS_TRAN_OFFSET);
+ caps_tran[1] = sdhci_readl(host,
+ caps_ptr + SDHCI_UHS2_HOST_CAPS_TRAN_1_OFFSET);
+
+ /* Geneneral Caps */
+ mmc->uhs2_caps.dap = caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_DAP_MASK;
+ mmc->uhs2_caps.gap = (caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_GAP_MASK) >>
+ SDHCI_UHS2_HOST_CAPS_GEN_GAP_SHIFT;
+ mmc->uhs2_caps.n_lanes = (caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_LANE_MASK)
+ >> SDHCI_UHS2_HOST_CAPS_GEN_LANE_SHIFT;
+ mmc->uhs2_caps.addr64 =
+ (caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_ADDR_64) ? 1 : 0;
+ mmc->uhs2_caps.card_type =
+ (caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_MASK) >>
+ SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_SHIFT;
+
+ /* PHY Caps */
+ mmc->uhs2_caps.phy_rev = caps_phy & SDHCI_UHS2_HOST_CAPS_PHY_REV_MASK;
+ mmc->uhs2_caps.speed_range =
+ (caps_phy & SDHCI_UHS2_HOST_CAPS_PHY_RANGE_MASK)
+ >> SDHCI_UHS2_HOST_CAPS_PHY_RANGE_SHIFT;
+ mmc->uhs2_caps.n_lss_sync =
+ (caps_phy & SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_SYN_MASK)
+ >> SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_SYN_SHIFT;
+ mmc->uhs2_caps.n_lss_dir =
+ (caps_phy & SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_DIR_MASK)
+ >> SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_DIR_SHIFT;
+ if (mmc->uhs2_caps.n_lss_sync == 0)
+ mmc->uhs2_caps.n_lss_sync = 16 << 2;
+ else
+ mmc->uhs2_caps.n_lss_sync <<= 2;
+ if (mmc->uhs2_caps.n_lss_dir == 0)
+ mmc->uhs2_caps.n_lss_dir = 16 << 3;
+ else
+ mmc->uhs2_caps.n_lss_dir <<= 3;
+
+ /* LINK/TRAN Caps */
+ mmc->uhs2_caps.link_rev =
+ caps_tran[0] & SDHCI_UHS2_HOST_CAPS_TRAN_LINK_REV_MASK;
+ mmc->uhs2_caps.n_fcu =
+ (caps_tran[0] & SDHCI_UHS2_HOST_CAPS_TRAN_N_FCU_MASK)
+ >> SDHCI_UHS2_HOST_CAPS_TRAN_N_FCU_SHIFT;
+ if (mmc->uhs2_caps.n_fcu == 0)
+ mmc->uhs2_caps.n_fcu = 256;
+ mmc->uhs2_caps.host_type =
+ (caps_tran[0] & SDHCI_UHS2_HOST_CAPS_TRAN_HOST_TYPE_MASK)
+ >> SDHCI_UHS2_HOST_CAPS_TRAN_HOST_TYPE_SHIFT;
+ mmc->uhs2_caps.maxblk_len =
+ (caps_tran[0] & SDHCI_UHS2_HOST_CAPS_TRAN_BLK_LEN_MASK)
+ >> SDHCI_UHS2_HOST_CAPS_TRAN_BLK_LEN_SHIFT;
+ mmc->uhs2_caps.n_data_gap =
+ caps_tran[1] & SDHCI_UHS2_HOST_CAPS_TRAN_1_N_DATA_GAP_MASK;
+
+ return 0;
+}
+
+int sdhci_uhs2_do_detect_init(struct sdhci_host *host)
+{
+ unsigned long flags;
+ int ret = -EIO;
+
+ DBG("%s: begin UHS2 init.\n", __func__);
+ spin_lock_irqsave(&host->lock, flags);
+
+ if (sdhci_uhs2_interface_detect(host)) {
+ pr_warn("%s: cannot detect UHS2 interface.\n",
+ mmc_hostname(host->mmc));
+ goto out;
+ }
+
+ if (sdhci_uhs2_init(host)) {
+ pr_warn("%s: UHS2 init fail.\n",
+ mmc_hostname(host->mmc));
+ goto out;
+ }
+
+ /* Init complete, do soft reset and enable UHS2 error irqs. */
+ sdhci_uhs2_reset(host, SDHCI_UHS2_SW_RESET_SD);
+ sdhci_uhs2_clear_set_irqs(host, SDHCI_INT_ALL_MASK,
+ SDHCI_UHS2_ERR_INT_STATUS_MASK);
+ /*
+ * !!! SDHCI_INT_ENABLE and SDHCI_SIGNAL_ENABLE was cleared
+ * by SDHCI_UHS2_SW_RESET_SD
+ */
+ sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
+ sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
+
+ ret = 0;
+out:
+ spin_unlock_irqrestore(&host->lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_do_detect_init);
+
+static void sdhci_uhs2_set_config(struct sdhci_host *host)
+{
+ u32 value;
+ u16 sdhci_uhs2_set_ptr = sdhci_readw(host, SDHCI_UHS2_SET_PTR);
+ u16 sdhci_uhs2_gen_set_reg = (sdhci_uhs2_set_ptr + 0);
+ u16 sdhci_uhs2_phy_set_reg = (sdhci_uhs2_set_ptr + 4);
+ u16 sdhci_uhs2_tran_set_reg = (sdhci_uhs2_set_ptr + 8);
+ u16 sdhci_uhs2_tran_set_1_reg = (sdhci_uhs2_set_ptr + 12);
+
+ /* Set Gen Settings */
+ sdhci_writel(host, host->mmc->uhs2_caps.n_lanes_set <<
+ SDHCI_UHS2_GEN_SET_N_LANES_POS, sdhci_uhs2_gen_set_reg);
+
+ /* Set PHY Settings */
+ value = (host->mmc->uhs2_caps.n_lss_dir_set <<
+ SDHCI_UHS2_PHY_SET_N_LSS_DIR_POS) |
+ (host->mmc->uhs2_caps.n_lss_sync_set <<
+ SDHCI_UHS2_PHY_SET_N_LSS_SYN_POS);
+ if (host->mmc->flags & MMC_UHS2_SPEED_B)
+ value |= 1 << SDHCI_UHS2_PHY_SET_SPEED_POS;
+ sdhci_writel(host, value, sdhci_uhs2_phy_set_reg);
+
+ /* Set LINK-TRAN Settings */
+ value = (host->mmc->uhs2_caps.max_retry_set <<
+ SDHCI_UHS2_TRAN_SET_RETRY_CNT_POS) |
+ (host->mmc->uhs2_caps.n_fcu_set <<
+ SDHCI_UHS2_TRAN_SET_N_FCU_POS);
+ sdhci_writel(host, value, sdhci_uhs2_tran_set_reg);
+ sdhci_writel(host, host->mmc->uhs2_caps.n_data_gap_set,
+ sdhci_uhs2_tran_set_1_reg);
+}
+
+static int sdhci_uhs2_check_dormant(struct sdhci_host *host)
+{
+ int timeout = 100;
+
+ while (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
+ SDHCI_UHS2_IN_DORMANT_STATE)) {
+ if (timeout == 0) {
+ pr_warn("%s: UHS2 IN_DORMANT fail in 100ms.\n",
+ mmc_hostname(host->mmc));
+ sdhci_dumpregs(host);
+ return -EIO;
+ }
+ timeout--;
+ mdelay(1);
+ }
+ return 0;
+}
+
+int sdhci_uhs2_do_set_reg(struct sdhci_host *host, enum uhs2_act act)
+{
+ unsigned long flags;
+ int err = 0;
+ u16 sdhci_uhs2_set_ptr = sdhci_readw(host, SDHCI_UHS2_SET_PTR);
+ u16 sdhci_uhs2_phy_set_reg = (sdhci_uhs2_set_ptr + 4);
+
+ DBG("Begin sdhci_uhs2_set_reg, act %d.\n", act);
+ spin_lock_irqsave(&host->lock, flags);
+
+ switch (act) {
+ case SET_CONFIG:
+ sdhci_uhs2_set_config(host);
+ break;
+ case ENABLE_INT:
+ sdhci_clear_set_irqs(host, 0, SDHCI_INT_CARD_INT);
+ break;
+ case DISABLE_INT:
+ sdhci_clear_set_irqs(host, SDHCI_INT_CARD_INT, 0);
+ break;
+ case SET_SPEED_B:
+ sdhci_writeb(host, 1 << SDHCI_UHS2_PHY_SET_SPEED_POS,
+ sdhci_uhs2_phy_set_reg);
+ break;
+ case CHECK_DORMANT:
+ err = sdhci_uhs2_check_dormant(host);
+ break;
+ default:
+ pr_err("%s: input action %d is wrong!\n",
+ mmc_hostname(host->mmc), act);
+ err = -EIO;
+ break;
+ }
+
+ spin_unlock_irqrestore(&host->lock, flags);
+ return err;
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_do_set_reg);
+
+void sdhci_uhs2_irq(struct sdhci_host *host)
+{
+ u32 uhs2mask;
+ struct mmc_command *cmd = host->cmd;
+
+ uhs2mask = sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS);
+ DBG("*** %s got UHS2 interrupt: 0x%08x\n",
+ mmc_hostname(host->mmc), uhs2mask);
+
+ sdhci_writel(host, uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_MASK,
+ SDHCI_UHS2_ERR_INT_STATUS);
+
+ if (!(uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_MASK))
+ return;
+
+ if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_CMD_MASK) {
+ if (!host->cmd) {
+ pr_err("%s: Got cmd interrupt 0x%08x but no cmd.\n",
+ mmc_hostname(host->mmc),
+ (unsigned int)uhs2mask);
+ sdhci_dumpregs(host);
+ return;
+ }
+ host->cmd->error = -EILSEQ;
+ if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT)
+ host->cmd->error = -ETIMEDOUT;
+ }
+
+ if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_DATA_MASK) {
+ if (!host->data) {
+ pr_err("%s: Got data interrupt 0x%08x but no data.\n",
+ mmc_hostname(host->mmc),
+ (unsigned int)uhs2mask);
+ sdhci_dumpregs(host);
+ return;
+ }
+
+ if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT) {
+ pr_err("%s: Got deadlock timeout interrupt 0x%08x\n",
+ mmc_hostname(host->mmc),
+ (unsigned int)uhs2mask);
+ host->data->error = -ETIMEDOUT;
+ } else if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_ADMA) {
+ pr_err("%s: ADMA error = 0x %x\n",
+ mmc_hostname(host->mmc),
+ sdhci_readb(host, SDHCI_ADMA_ERROR));
+ host->data->error = -EIO;
+ } else
+ host->data->error = -EILSEQ;
+ }
+
+ if (host->data && host->data->error)
+ sdhci_finish_data(host);
+ else
+ sdhci_finish_mrq(host, cmd->mrq);
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_irq);
+
+int sdhci_uhs2_add_host(struct sdhci_host *host, u32 caps1)
+{
+ struct mmc_host *mmc;
+ u32 max_current_caps2;
+
+ if (host->version < SDHCI_SPEC_400)
+ return 0;
+
+ mmc = host->mmc;
+
+ /* Support UHS2 */
+ if (caps1 & SDHCI_SUPPORT_UHS2) {
+ mmc->caps |= MMC_CAP_UHS2;
+ mmc->flags |= MMC_UHS2_SUPPORT;
+ }
+
+ max_current_caps2 = sdhci_readl(host, SDHCI_MAX_CURRENT_1);
+
+ if ((caps1 & SDHCI_SUPPORT_VDD2_180) &&
+ !max_current_caps2 &&
+ !IS_ERR(mmc->supply.vmmc2)) {
+ /* UHS2 - VDD2 */
+ int curr = regulator_get_current_limit(mmc->supply.vmmc2);
+
+ if (curr > 0) {
+ /* convert to SDHCI_MAX_CURRENT format */
+ curr = curr/1000; /* convert to mA */
+ curr = curr/SDHCI_MAX_CURRENT_MULTIPLIER;
+ curr = min_t(u32, curr,
+ SDHCI_MAX_CURRENT_LIMIT);
+ max_current_caps2 = curr;
+ }
+ }
+
+ if (caps1 & SDHCI_SUPPORT_VDD2_180) {
+ mmc->ocr_avail_uhs2 |= MMC_VDD2_165_195;
+ /*
+ * UHS2 doesn't require this. Only UHS-I bus needs to set
+ * max current.
+ */
+ mmc->max_current_180_vdd2 = (max_current_caps2 &
+ SDHCI_MAX_CURRENT_VDD2_180_MASK) *
+ SDHCI_MAX_CURRENT_MULTIPLIER;
+ } else {
+ mmc->caps &= ~MMC_CAP_UHS2;
+ mmc->flags &= ~MMC_UHS2_SUPPORT;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_add_host);
+
+void sdhci_uhs2_remove_host(struct sdhci_host *host, int dead)
+{
+ if (!(host->mmc) || !(host->mmc->flags & MMC_UHS2_SUPPORT))
+ return;
+
+ if (!dead)
+ sdhci_uhs2_reset(host, SDHCI_UHS2_SW_RESET_FULL);
+
+ sdhci_writel(host, 0, SDHCI_UHS2_ERR_INT_STATUS_EN);
+ sdhci_writel(host, 0, SDHCI_UHS2_ERR_INT_SIG_EN);
+ host->mmc->flags &= ~MMC_UHS2_SUPPORT;
+ host->mmc->flags &= ~MMC_UHS2_INITIALIZED;
+}
+EXPORT_SYMBOL_GPL(sdhci_uhs2_remove_host);
diff --git a/drivers/mmc/host/sdhci-uhs2.h b/drivers/mmc/host/sdhci-uhs2.h
new file mode 100644
index 000000000000..1a17c81a3533
--- /dev/null
+++ b/drivers/mmc/host/sdhci-uhs2.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * linux/drivers/mmc/host/sdhci-uhs2.h - Secure Digital Host Controller
+ * Interface driver
+ *
+ * Header file for Host Controller UHS2 related registers and I/O accessors.
+ *
+ * Copyright (C) 2014 Intel Corp, All Rights Reserved.
+ */
+#ifndef __SDHCI_UHS2_H
+#define __SDHCI_UHS2_H
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/core.h>
+#include <linux/mmc/uhs2.h>
+
+extern void sdhci_uhs2_reset(struct sdhci_host *host, u16 mask);
+extern void sdhci_uhs2_set_transfer_mode(struct sdhci_host *host,
+ struct mmc_command *cmd);
+extern void sdhci_uhs2_send_command(struct sdhci_host *host,
+ struct mmc_command *cmd);
+extern void sdhci_uhs2_finish_command(struct sdhci_host *host);
+extern void sdhci_uhs2_do_set_ios(struct sdhci_host *host,
+ struct mmc_ios *ios);
+extern int sdhci_uhs2_do_detect_init(struct sdhci_host *host);
+extern int sdhci_uhs2_do_set_reg(struct sdhci_host *host, enum uhs2_act act);
+extern void sdhci_uhs2_irq(struct sdhci_host *host);
+extern int sdhci_uhs2_add_host(struct sdhci_host *host, u32 caps1);
+extern void sdhci_uhs2_remove_host(struct sdhci_host *host, int dead);
+extern void sdhci_uhs2_clear_set_irqs(struct sdhci_host *host, u32 clear,
+ u32 set);
+extern void sdhci_uhs2_set_timeout(struct sdhci_host *host);
+
+#endif /* __SDHCI_UHS2_H */
diff --git a/drivers/mmc/host/sdhci-xenon.c b/drivers/mmc/host/sdhci-xenon.c
index 1dea1ba66f7b..328860cf2bc3 100644
--- a/drivers/mmc/host/sdhci-xenon.c
+++ b/drivers/mmc/host/sdhci-xenon.c
@@ -214,12 +214,12 @@ static void xenon_set_uhs_signaling(struct sdhci_host *host,
}
static void xenon_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
struct mmc_host *mmc = host->mmc;
u8 pwr = host->pwr;
- sdhci_set_power_noreg(host, mode, vdd);
+ sdhci_set_power_noreg(host, mode, vdd, -1);
if (host->pwr == pwr)
return;
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index fe83ece6965b..2f7732f4bb75 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -42,8 +42,28 @@
#define SDHCI_TRNS_READ 0x10
#define SDHCI_TRNS_MULTI 0x20
+/*
+ * Defined in Host Version 4.10.
+ * 1 - R5 (SDIO)
+ * 0 - R1 (Memory)
+ */
+#define SDHCI_TRNS_RES_TYPE 0x40
+#define SDHCI_TRNS_RES_ERR_CHECK 0x80
+#define SDHCI_TRNS_RES_INT_DIS 0x0100
+
+
#define SDHCI_COMMAND 0x0E
#define SDHCI_CMD_RESP_MASK 0x03
+
+/*
+ * Host Version 4.10 adds this bit to distinguish a main command or
+ * sub command.
+ * CMD53(SDIO) - main command
+ * CMD52(SDIO) - sub command which doesn't have data block or doesn't
+ * indicate busy.
+ */
+#define SDHCI_CMD_SUB_CMD 0x04
+
#define SDHCI_CMD_CRC 0x08
#define SDHCI_CMD_INDEX 0x10
#define SDHCI_CMD_DATA 0x20
@@ -59,11 +79,19 @@
#define SDHCI_RESPONSE 0x10
+#define SDHCI_RESPONSE_CM_TRAN_ABORT_OFFSET 0x10
+#define SDHCI_RESPONSE_CM_TRAN_ABORT_SIZE 4
+#define SDHCI_RESPONSE_SD_TRAN_ABORT_OFFSET 0x18
+#define SDHCI_RESPONSE_SD_TRAN_ABORT_SIZE 8
+
#define SDHCI_BUFFER 0x20
#define SDHCI_PRESENT_STATE 0x24
#define SDHCI_CMD_INHIBIT 0x00000001
#define SDHCI_DATA_INHIBIT 0x00000002
+
+#define SDHCI_DATA_HIGH_LVL_MASK 0x000000F0
+
#define SDHCI_DOING_WRITE 0x00000100
#define SDHCI_DOING_READ 0x00000200
#define SDHCI_SPACE_AVAILABLE 0x00000400
@@ -79,6 +107,13 @@
#define SDHCI_DATA_0_LVL_MASK 0x00100000
#define SDHCI_CMD_LVL 0x01000000
+#define SDHCI_HOST_REGULATOR_STABLE 0x02000000
+#define SDHCI_CMD_NOT_ISSUE_ERR 0x08000000
+#define SDHCI_SUB_CMD_STATUS 0x10000000
+#define SDHCI_UHS2_IN_DORMANT_STATE 0x20000000
+#define SDHCI_UHS2_LANE_SYNC 0x40000000
+#define SDHCI_UHS2_IF_DETECT 0x80000000
+
#define SDHCI_HOST_CONTROL 0x28
#define SDHCI_CTRL_LED 0x01
#define SDHCI_CTRL_4BITBUS 0x02
@@ -99,6 +134,11 @@
#define SDHCI_POWER_300 0x0C
#define SDHCI_POWER_330 0x0E
+/* VDD2 - UHS2 */
+#define SDHCI_VDD2_POWER_ON 0x10
+#define SDHCI_VDD2_POWER_180 0xA0
+#define SDHCI_VDD2_POWER_120 0x80
+
#define SDHCI_BLOCK_GAP_CONTROL 0x2A
#define SDHCI_WAKE_UP_CONTROL 0x2B
@@ -109,7 +149,7 @@
#define SDHCI_CLOCK_CONTROL 0x2C
#define SDHCI_DIVIDER_SHIFT 8
#define SDHCI_DIVIDER_HI_SHIFT 6
-#define SDHCI_DIV_MASK 0xFF
+#define SDHCI_DIV_MASK 0xFF
#define SDHCI_DIV_MASK_LEN 8
#define SDHCI_DIV_HI_MASK 0x300
#define SDHCI_PROG_CLOCK_MODE 0x0020
@@ -138,6 +178,10 @@
#define SDHCI_INT_CARD_REMOVE 0x00000080
#define SDHCI_INT_CARD_INT 0x00000100
#define SDHCI_INT_RETUNE 0x00001000
+
+/* Host Version 4.10 */
+#define SDHCI_INT_FX_EVENT 0x00002000
+
#define SDHCI_INT_CQE 0x00004000
#define SDHCI_INT_ERROR 0x00008000
#define SDHCI_INT_TIMEOUT 0x00010000
@@ -151,6 +195,9 @@
#define SDHCI_INT_AUTO_CMD_ERR 0x01000000
#define SDHCI_INT_ADMA_ERROR 0x02000000
+/* Host Version 4.0 */
+#define SDHCI_INT_RESPONSE_ERROR 0x08000000
+
#define SDHCI_INT_NORMAL_MASK 0x00007FFF
#define SDHCI_INT_ERROR_MASK 0xFFFF8000
@@ -177,6 +224,9 @@
#define SDHCI_AUTO_CMD_END_BIT 0x00000008
#define SDHCI_AUTO_CMD_INDEX 0x00000010
+/* Host Version 4.10 */
+#define SDHCI_ACMD_RESPONSE_ERROR 0x0020
+
#define SDHCI_HOST_CONTROL2 0x3E
#define SDHCI_CTRL_UHS_MASK 0x0007
#define SDHCI_CTRL_UHS_SDR12 0x0000
@@ -185,6 +235,7 @@
#define SDHCI_CTRL_UHS_SDR104 0x0003
#define SDHCI_CTRL_UHS_DDR50 0x0004
#define SDHCI_CTRL_HS400 0x0005 /* Non-standard */
+#define SDHCI_CTRL_UHS_2 0x0007 /* UHS-2 */
#define SDHCI_CTRL_VDD_180 0x0008
#define SDHCI_CTRL_DRV_TYPE_MASK 0x0030
#define SDHCI_CTRL_DRV_TYPE_B 0x0000
@@ -193,9 +244,12 @@
#define SDHCI_CTRL_DRV_TYPE_D 0x0030
#define SDHCI_CTRL_EXEC_TUNING 0x0040
#define SDHCI_CTRL_TUNED_CLK 0x0080
+#define SDHCI_CTRL_UHS2_INTERFACE_EN 0x0100 /* UHS-2 */
+#define SDHCI_CTRL_ADMA2_LEN_MODE 0x0400
#define SDHCI_CMD23_ENABLE 0x0800
#define SDHCI_CTRL_V4_MODE 0x1000
#define SDHCI_CTRL_64BIT_ADDR 0x2000
+#define SDHCI_CTRL_ASYNC_INT_EN 0x4000
#define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000
#define SDHCI_CAPABILITIES 0x40
@@ -218,10 +272,12 @@
#define SDHCI_CAN_VDD_180 0x04000000
#define SDHCI_CAN_64BIT_V4 0x08000000
#define SDHCI_CAN_64BIT 0x10000000
+#define SDHCI_CAN_ASYNC_INT 0x20000000
#define SDHCI_SUPPORT_SDR50 0x00000001
#define SDHCI_SUPPORT_SDR104 0x00000002
#define SDHCI_SUPPORT_DDR50 0x00000004
+#define SDHCI_SUPPORT_UHS2 0x00000008 /* UHS-2 support */
#define SDHCI_DRIVER_TYPE_A 0x00000010
#define SDHCI_DRIVER_TYPE_C 0x00000020
#define SDHCI_DRIVER_TYPE_D 0x00000040
@@ -233,11 +289,14 @@
#define SDHCI_CLOCK_MUL_MASK 0x00FF0000
#define SDHCI_CLOCK_MUL_SHIFT 16
#define SDHCI_CAN_DO_ADMA3 0x08000000
+#define SDHCI_SUPPORT_VDD2_180 0x10000000 /* UHS-2 1.8V VDD2 */
+#define SDHCI_RSVD_FOR_VDD2 0x20000000 /* Rsvd for future VDD2 */
#define SDHCI_SUPPORT_HS400 0x80000000 /* Non-standard */
#define SDHCI_CAPABILITIES_1 0x44
#define SDHCI_MAX_CURRENT 0x48
+#define SDHCI_MAX_CURRENT_1 0x4C
#define SDHCI_MAX_CURRENT_LIMIT 0xFF
#define SDHCI_MAX_CURRENT_330_MASK 0x0000FF
#define SDHCI_MAX_CURRENT_330_SHIFT 0
@@ -245,12 +304,18 @@
#define SDHCI_MAX_CURRENT_300_SHIFT 8
#define SDHCI_MAX_CURRENT_180_MASK 0xFF0000
#define SDHCI_MAX_CURRENT_180_SHIFT 16
-#define SDHCI_MAX_CURRENT_MULTIPLIER 4
+#define SDHCI_MAX_CURRENT_VDD2_180_MASK 0x0000000FF /* UHS2 */
+#define SDHCI_MAX_CURRENT_MULTIPLIER 4
/* 4C-4F reserved for more max current */
#define SDHCI_SET_ACMD12_ERROR 0x50
+/* Host Version 4.10 */
+#define SDHCI_SET_ACMD_RESPONSE_ERROR 0x20
#define SDHCI_SET_INT_ERROR 0x52
+/* Host Version 4.10 */
+#define SDHCI_SET_INT_TUNING_ERROR 0x0400
+#define SDHCI_SET_INT_RESPONSE_ERROR 0x0800
#define SDHCI_ADMA_ERROR 0x54
@@ -267,6 +332,11 @@
#define SDHCI_PRESET_FOR_SDR104 0x6C
#define SDHCI_PRESET_FOR_DDR50 0x6E
#define SDHCI_PRESET_FOR_HS400 0x74 /* Non-standard */
+
+/* TODO: 0x74 is used for UHS2 in 4.10. How about HS400? */
+/* UHS2 */
+#define SDHCI_PRESET_FOR_UHS2 0x74
+
#define SDHCI_PRESET_DRV_MASK 0xC000
#define SDHCI_PRESET_DRV_SHIFT 14
#define SDHCI_PRESET_CLKGEN_SEL_MASK 0x400
@@ -274,6 +344,195 @@
#define SDHCI_PRESET_SDCLK_FREQ_MASK 0x3FF
#define SDHCI_PRESET_SDCLK_FREQ_SHIFT 0
+#define SDHCI_ADMA3_ADDRESS 0x78
+
+/* UHS-II */
+#define SDHCI_UHS2_BLOCK_SIZE 0x80
+#define SDHCI_UHS2_MAKE_BLKSZ(dma, blksz) \
+ (((dma & 0x7) << 12) | (blksz & 0xFFF))
+
+#define SDHCI_UHS2_BLOCK_COUNT 0x84
+
+#define SDHCI_UHS2_CMD_PACKET 0x88
+#define SDHCI_UHS2_CMD_PACK_MAX_LEN 20
+
+#define SDHCI_UHS2_TRANS_MODE 0x9C
+#define SDHCI_UHS2_TRNS_DMA 0x0001
+#define SDHCI_UHS2_TRNS_BLK_CNT_EN 0x0002
+#define SDHCI_UHS2_TRNS_DATA_TRNS_WRT 0x0010
+#define SDHCI_UHS2_TRNS_BLK_BYTE_MODE 0x0020
+#define SDHCI_UHS2_TRNS_RES_R5 0x0040
+#define SDHCI_UHS2_TRNS_RES_ERR_CHECK_EN 0x0080
+#define SDHCI_UHS2_TRNS_RES_INT_DIS 0x0100
+#define SDHCI_UHS2_TRNS_WAIT_EBSY 0x4000
+#define SDHCI_UHS2_TRNS_2L_HD 0x8000
+
+#define SDHCI_UHS2_COMMAND 0x9E
+#define SDHCI_UHS2_COMMAND_SUB_CMD 0x0004
+#define SDHCI_UHS2_COMMAND_DATA 0x0020
+#define SDHCI_UHS2_COMMAND_TRNS_ABORT 0x0040
+#define SDHCI_UHS2_COMMAND_CMD12 0x0080
+#define SDHCI_UHS2_COMMAND_DORMANT 0x00C0
+#define SDHCI_UHS2_COMMAND_PACK_LEN_MASK 0x1F00
+#define SDHCI_UHS2_COMMAND_PACK_LEN_SHIFT 8
+
+#define SDHCI_UHS2_RESPONSE 0xA0
+#define SDHCI_UHS2_RESPONSE_MAX_LEN 20
+
+#define SDHCI_UHS2_MSG_SELECT 0xB4
+#define SDHCI_UHS2_MSG_SELECT_CURR 0x0
+#define SDHCI_UHS2_MSG_SELECT_ONE 0x1
+#define SDHCI_UHS2_MSG_SELECT_TWO 0x2
+#define SDHCI_UHS2_MSG_SELECT_THREE 0x3
+
+#define SDHCI_UHS2_MSG 0xB8
+
+#define SDHCI_UHS2_DEV_INT_STATUS 0xBC
+
+#define SDHCI_UHS2_DEV_SELECT 0xBE
+#define SDHCI_UHS2_DEV_SELECT_DEV_SEL_MASK 0x0F
+#define SDHCI_UHS2_DEV_SELECT_INT_MSG_EN 0x80
+
+#define SDHCI_UHS2_DEV_INT_CODE 0xBF
+
+#define SDHCI_UHS2_SW_RESET 0xC0
+#define SDHCI_UHS2_SW_RESET_FULL 0x0001
+#define SDHCI_UHS2_SW_RESET_SD 0x0002
+
+#define SDHCI_UHS2_TIMER_CTRL 0xC2
+#define SDHCI_UHS2_TIMER_CTRL_DEADLOCK_SHIFT 4
+
+#define SDHCI_UHS2_ERR_INT_STATUS 0xC4
+#define SDHCI_UHS2_ERR_INT_STATUS_EN 0xC8
+#define SDHCI_UHS2_ERR_INT_SIG_EN 0xCC
+#define SDHCI_UHS2_ERR_INT_STATUS_HEADER 0x00000001
+#define SDHCI_UHS2_ERR_INT_STATUS_RES 0x00000002
+#define SDHCI_UHS2_ERR_INT_STATUS_RETRY_EXP 0x00000004
+#define SDHCI_UHS2_ERR_INT_STATUS_CRC 0x00000008
+#define SDHCI_UHS2_ERR_INT_STATUS_FRAME 0x00000010
+#define SDHCI_UHS2_ERR_INT_STATUS_TID 0x00000020
+#define SDHCI_UHS2_ERR_INT_STATUS_UNRECOVER 0x00000080
+#define SDHCI_UHS2_ERR_INT_STATUS_EBUSY 0x00000100
+#define SDHCI_UHS2_ERR_INT_STATUS_ADMA 0x00008000
+#define SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT 0x00010000
+#define SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT 0x00020000
+#define SDHCI_UHS2_ERR_INT_STATUS_VENDOR 0x08000000
+#define SDHCI_UHS2_ERR_INT_STATUS_MASK \
+ (SDHCI_UHS2_ERR_INT_STATUS_HEADER | \
+ SDHCI_UHS2_ERR_INT_STATUS_RES | \
+ SDHCI_UHS2_ERR_INT_STATUS_RETRY_EXP | \
+ SDHCI_UHS2_ERR_INT_STATUS_CRC | \
+ SDHCI_UHS2_ERR_INT_STATUS_FRAME | \
+ SDHCI_UHS2_ERR_INT_STATUS_TID | \
+ SDHCI_UHS2_ERR_INT_STATUS_UNRECOVER | \
+ SDHCI_UHS2_ERR_INT_STATUS_EBUSY | \
+ SDHCI_UHS2_ERR_INT_STATUS_ADMA | \
+ SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT | \
+ SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT)
+#define SDHCI_UHS2_ERR_INT_STATUS_CMD_MASK \
+ (SDHCI_UHS2_ERR_INT_STATUS_HEADER | \
+ SDHCI_UHS2_ERR_INT_STATUS_RES | \
+ SDHCI_UHS2_ERR_INT_STATUS_FRAME | \
+ SDHCI_UHS2_ERR_INT_STATUS_TID | \
+ SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT)
+/* CRC Error occurs during a packet receiving */
+#define SDHCI_UHS2_ERR_INT_STATUS_DATA_MASK \
+ (SDHCI_UHS2_ERR_INT_STATUS_RETRY_EXP | \
+ SDHCI_UHS2_ERR_INT_STATUS_CRC | \
+ SDHCI_UHS2_ERR_INT_STATUS_UNRECOVER | \
+ SDHCI_UHS2_ERR_INT_STATUS_EBUSY | \
+ SDHCI_UHS2_ERR_INT_STATUS_ADMA | \
+ SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT)
+
+#define SDHCI_UHS2_SET_PTR 0xE0
+#define SDHCI_UHS2_GEN_SET_POWER_LOW 0x0001
+#define SDHCI_UHS2_GEN_SET_N_LANES_POS 8
+#define SDHCI_UHS2_GEN_SET_2L_FD_HD 0x0
+#define SDHCI_UHS2_GEN_SET_2D1U_FD 0x2
+#define SDHCI_UHS2_GEN_SET_1D2U_FD 0x3
+#define SDHCI_UHS2_GEN_SET_2D2U_FD 0x4
+
+#define SDHCI_UHS2_PHY_SET_SPEED_POS 6
+#define SDHCI_UHS2_PHY_SET_HIBER_EN 0x00008000
+#define SDHCI_UHS2_PHY_SET_N_LSS_SYN_MASK 0x000F0000
+#define SDHCI_UHS2_PHY_SET_N_LSS_SYN_POS 16
+#define SDHCI_UHS2_PHY_SET_N_LSS_DIR_MASK 0x00F00000
+#define SDHCI_UHS2_PHY_SET_N_LSS_DIR_POS 20
+
+#define SDHCI_UHS2_TRAN_SET_N_FCU_MASK 0x0000FF00
+#define SDHCI_UHS2_TRAN_SET_N_FCU_POS 8
+#define SDHCI_UHS2_TRAN_SET_RETRY_CNT_MASK 0x00030000
+#define SDHCI_UHS2_TRAN_SET_RETRY_CNT_POS 16
+
+#define SDHCI_UHS2_TRAN_SET_1_N_DAT_GAP_MASK 0x000000FF
+
+#define SDHCI_UHS2_HOST_CAPS_PTR 0xE2
+#define SDHCI_UHS2_HOST_CAPS_GEN_OFFSET 0
+#define SDHCI_UHS2_HOST_CAPS_GEN_DAP_MASK 0x0000000F
+#define SDHCI_UHS2_HOST_CAPS_GEN_GAP_MASK 0x000000F0
+#define SDHCI_UHS2_HOST_CAPS_GEN_GAP(gap) (gap * 360)
+#define SDHCI_UHS2_HOST_CAPS_GEN_GAP_SHIFT 4
+#define SDHCI_UHS2_HOST_CAPS_GEN_LANE_MASK 0x00003F00
+#define SDHCI_UHS2_HOST_CAPS_GEN_LANE_SHIFT 8
+#define SDHCI_UHS2_HOST_CAPS_GEN_2L_HD_FD 1
+#define SDHCI_UHS2_HOST_CAPS_GEN_2D1U_FD 2
+#define SDHCI_UHS2_HOST_CAPS_GEN_1D2U_FD 4
+#define SDHCI_UHS2_HOST_CAPS_GEN_2D2U_FD 8
+#define SDHCI_UHS2_HOST_CAPS_GEN_ADDR_64 0x00004000
+#define SDHCI_UHS2_HOST_CAPS_GEN_BOOT 0x00008000
+#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_MASK 0x00030000
+#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_SHIFT 16
+#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_RMV 0
+#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_EMB 1
+#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_EMB_RMV 2
+#define SDHCI_UHS2_HOST_CAPS_GEN_NUM_DEV_MASK 0x003C0000
+#define SDHCI_UHS2_HOST_CAPS_GEN_NUM_DEV_SHIFT 18
+#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_MASK 0x00C00000
+#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_SHIFT 22
+#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_P2P 0
+#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_RING 1
+#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_HUB 2
+#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_HUB_RING 3
+
+#define SDHCI_UHS2_HOST_CAPS_PHY_OFFSET 4
+#define SDHCI_UHS2_HOST_CAPS_PHY_REV_MASK 0x0000003F
+#define SDHCI_UHS2_HOST_CAPS_PHY_RANGE_MASK 0x000000C0
+#define SDHCI_UHS2_HOST_CAPS_PHY_RANGE_SHIFT 6
+#define SDHCI_UHS2_HOST_CAPS_PHY_RANGE_A 0
+#define SDHCI_UHS2_HOST_CAPS_PHY_RANGE_B 1
+#define SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_SYN_MASK 0x000F0000
+#define SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_SYN_SHIFT 16
+#define SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_DIR_MASK 0x00F00000
+#define SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_DIR_SHIFT 20
+#define SDHCI_UHS2_HOST_CAPS_TRAN_OFFSET 8
+#define SDHCI_UHS2_HOST_CAPS_TRAN_LINK_REV_MASK 0x0000003F
+#define SDHCI_UHS2_HOST_CAPS_TRAN_N_FCU_MASK 0x0000FF00
+#define SDHCI_UHS2_HOST_CAPS_TRAN_N_FCU_SHIFT 8
+#define SDHCI_UHS2_HOST_CAPS_TRAN_HOST_TYPE_MASK 0x00070000
+#define SDHCI_UHS2_HOST_CAPS_TRAN_HOST_TYPE_SHIFT 16
+#define SDHCI_UHS2_HOST_CAPS_TRAN_BLK_LEN_MASK 0xFFF00000
+#define SDHCI_UHS2_HOST_CAPS_TRAN_BLK_LEN_SHIFT 20
+
+#define SDHCI_UHS2_HOST_CAPS_TRAN_1_OFFSET 12
+#define SDHCI_UHS2_HOST_CAPS_TRAN_1_N_DATA_GAP_MASK 0x000000FF
+
+#define SDHCI_UHS2_TEST_PTR 0xE4
+#define SDHCI_UHS2_TEST_ERR_HEADER 0x00000001
+#define SDHCI_UHS2_TEST_ERR_RES 0x00000002
+#define SDHCI_UHS2_TEST_ERR_RETRY_EXP 0x00000004
+#define SDHCI_UHS2_TEST_ERR_CRC 0x00000008
+#define SDHCI_UHS2_TEST_ERR_FRAME 0x00000010
+#define SDHCI_UHS2_TEST_ERR_TID 0x00000020
+#define SDHCI_UHS2_TEST_ERR_UNRECOVER 0x00000080
+#define SDHCI_UHS2_TEST_ERR_EBUSY 0x00000100
+#define SDHCI_UHS2_TEST_ERR_ADMA 0x00008000
+#define SDHCI_UHS2_TEST_ERR_RES_TIMEOUT 0x00010000
+#define SDHCI_UHS2_TEST_ERR_DEADLOCK_TIMEOUT 0x00020000
+#define SDHCI_UHS2_TEST_ERR_VENDOR 0x08000000
+
+#define SDHCI_UHS2_EMBED_CTRL 0xE6
+#define SDHCI_UHS2_VENDOR 0xE8
+
#define SDHCI_SLOT_INT_STATUS 0xFC
#define SDHCI_HOST_VERSION 0xFE
@@ -519,6 +778,7 @@ struct sdhci_host {
#define SDHCI_SIGNALING_330 (1<<14) /* Host is capable of 3.3V signaling */
#define SDHCI_SIGNALING_180 (1<<15) /* Host is capable of 1.8V signaling */
#define SDHCI_SIGNALING_120 (1<<16) /* Host is capable of 1.2V signaling */
+#define SDHCI_USE_UHS2 (1<<17) /* Support UHS2 */
unsigned int version; /* SDHCI spec. version */
@@ -620,7 +880,7 @@ struct sdhci_ops {
void (*set_clock)(struct sdhci_host *host, unsigned int clock);
void (*set_power)(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd);
+ unsigned short vdd, unsigned short vdd2);
u32 (*irq)(struct sdhci_host *host, u32 intmask);
@@ -759,10 +1019,6 @@ u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
unsigned int *actual_clock);
void sdhci_set_clock(struct sdhci_host *host, unsigned int clock);
void sdhci_enable_clk(struct sdhci_host *host, u16 clk);
-void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd);
-void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd);
void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq);
void sdhci_set_bus_width(struct sdhci_host *host, int width);
void sdhci_reset(struct sdhci_host *host, u8 mask);
@@ -782,6 +1038,20 @@ int sdhci_runtime_suspend_host(struct sdhci_host *host);
int sdhci_runtime_resume_host(struct sdhci_host *host, int soft_reset);
#endif
+/* sdhci_uhs2.c needed */
+extern void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
+extern void sdhci_dumpregs(struct sdhci_host *host);
+extern void sdhci_finish_data(struct sdhci_host *host);
+extern void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
+ unsigned short vdd, unsigned short vdd2);
+extern void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
+ unsigned short vdd, unsigned short vdd2);
+extern void sdhci_runtime_pm_bus_off(struct sdhci_host *host);
+
+extern void sdhci_uhs2_disable_clk(struct mmc_host *mmc);
+extern void sdhci_uhs2_enable_clk(struct mmc_host *mmc);
+extern void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq);
+
void sdhci_cqe_enable(struct mmc_host *mmc);
void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery);
bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
index b8e897e31e2e..524a342ae3cd 100644
--- a/drivers/mmc/host/sdhci_am654.c
+++ b/drivers/mmc/host/sdhci_am654.c
@@ -209,14 +209,14 @@ static void sdhci_j721e_4bit_set_clock(struct sdhci_host *host,
}
static void sdhci_am654_set_power(struct sdhci_host *host, unsigned char mode,
- unsigned short vdd)
+ unsigned short vdd, unsigned short vdd2)
{
if (!IS_ERR(host->mmc->supply.vmmc)) {
struct mmc_host *mmc = host->mmc;
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
}
- sdhci_set_power_noreg(host, mode, vdd);
+ sdhci_set_power_noreg(host, mode, vdd, -1);
}
static void sdhci_am654_write_b(struct sdhci_host *host, u8 val, int reg)
diff --git a/include/linux/mmc/uhs2.h b/include/linux/mmc/uhs2.h
new file mode 100644
index 000000000000..c61670e3cc06
--- /dev/null
+++ b/include/linux/mmc/uhs2.h
@@ -0,0 +1,270 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * linux/drivers/mmc/host/uhs2.h - UHS-II driver
+ *
+ * Header file for UHS-II packets, Host Controller registers and I/O
+ * accessors.
+ *
+ * Copyright (C) 2014 Intel Corp, All Rights Reserved.
+ */
+#ifndef LINUX_MMC_UHS2_H
+#define LINUX_MMC_UHS2_H
+
+struct mmc_request;
+
+/* LINK Layer definition */
+/* UHS2 Header */
+#define UHS2_NATIVE_PACKET_POS 7
+#define UHS2_NATIVE_PACKET (1 << UHS2_NATIVE_PACKET_POS)
+
+#define UHS2_PACKET_TYPE_POS 4
+#define UHS2_PACKET_TYPE_CCMD (0 << UHS2_PACKET_TYPE_POS)
+#define UHS2_PACKET_TYPE_DCMD (1 << UHS2_PACKET_TYPE_POS)
+#define UHS2_PACKET_TYPE_RES (2 << UHS2_PACKET_TYPE_POS)
+#define UHS2_PACKET_TYPE_DATA (3 << UHS2_PACKET_TYPE_POS)
+#define UHS2_PACKET_TYPE_MSG (7 << UHS2_PACKET_TYPE_POS)
+
+#define UHS2_DEST_ID_MASK 0x0F
+#define UHS2_DEST_ID 0x1
+
+#define UHS2_SRC_ID_POS 12
+#define UHS2_SRC_ID_MASK 0xF000
+
+#define UHS2_TRANS_ID_POS 8
+#define UHS2_TRANS_ID_MASK 0x0700
+
+/* UHS2 MSG */
+#define UHS2_MSG_CTG_POS 5
+#define UHS2_MSG_CTG_LMSG 0x00
+#define UHS2_MSG_CTG_INT 0x60
+#define UHS2_MSG_CTG_AMSG 0x80
+
+#define UHS2_MSG_CTG_FCREQ 0x00
+#define UHS2_MSG_CTG_FCRDY 0x01
+#define UHS2_MSG_CTG_STAT 0x02
+
+#define UHS2_MSG_CODE_POS 8
+#define UHS2_MSG_CODE_FC_UNRECOVER_ERR 0x8
+#define UHS2_MSG_CODE_STAT_UNRECOVER_ERR 0x8
+#define UHS2_MSG_CODE_STAT_RECOVER_ERR 0x1
+
+/* TRANS Layer definition */
+
+/* Native packets*/
+#define UHS2_NATIVE_CMD_RW_POS 7
+#define UHS2_NATIVE_CMD_WRITE (1 << UHS2_NATIVE_CMD_RW_POS)
+#define UHS2_NATIVE_CMD_READ (0 << UHS2_NATIVE_CMD_RW_POS)
+
+#define UHS2_NATIVE_CMD_PLEN_POS 4
+#define UHS2_NATIVE_CMD_PLEN_4B (1 << UHS2_NATIVE_CMD_PLEN_POS)
+#define UHS2_NATIVE_CMD_PLEN_8B (2 << UHS2_NATIVE_CMD_PLEN_POS)
+#define UHS2_NATIVE_CMD_PLEN_16B (3 << UHS2_NATIVE_CMD_PLEN_POS)
+
+#define UHS2_NATIVE_CCMD_GET_MIOADR_MASK 0xF00
+#define UHS2_NATIVE_CCMD_MIOADR_MASK 0x0F
+
+#define UHS2_NATIVE_CCMD_LIOADR_POS 8
+#define UHS2_NATIVE_CCMD_GET_LIOADR_MASK 0x0FF
+
+#define UHS2_DCMD_DM_POS 6
+#define UHS2_DCMD_2L_HD_MODE (1 << UHS2_DCMD_DM_POS)
+#define UHS2_DCMD_LM_POS 5
+#define UHS2_DCMD_LM_TLEN_EXIST (1 << UHS2_DCMD_LM_POS)
+#define UHS2_DCMD_TLUM_POS 4
+#define UHS2_DCMD_TLUM_BYTE_MODE (1 << UHS2_DCMD_TLUM_POS)
+#define UHS2_NATIVE_DCMD_DAM_POS 3
+#define UHS2_NATIVE_DCMD_DAM_IO (1 << UHS2_NATIVE_DCMD_DAM_POS)
+/*
+ * Per UHS2 spec, DCMD payload should be MSB first. There may be
+ * two types of data be assembled to MSB:
+ * 1. TLEN: Input block size for signle read/write and number of blocks
+ * for multiple read/write to calculate TLEN as MSB first per spec.
+ * 2. SD command argument.
+ */
+static inline u32 uhs2_dcmd_convert_msb(u32 input)
+{
+ u32 ret = 0;
+
+ ret = ((input & 0xFF) << 24) |
+ (((input >> 8) & 0xFF) << 16) |
+ (((input >> 16) & 0xFF) << 8) |
+ ((input >> 24) & 0xFF);
+ return ret;
+}
+
+#define UHS2_RES_NACK_POS 7
+#define UHS2_RES_NACK_MASK (0x1 << UHS2_RES_NACK_POS)
+
+#define UHS2_RES_ECODE_POS 4
+#define UHS2_RES_ECODE_MASK 0x7
+#define UHS2_RES_ECODE_COND 1
+#define UHS2_RES_ECODE_ARG 2
+#define UHS2_RES_ECODE_GEN 3
+
+/* IOADR of device registers */
+#define UHS2_IOADR_GENERIC_CAPS 0x00
+#define UHS2_IOADR_PHY_CAPS 0x02
+#define UHS2_IOADR_LINK_CAPS 0x04
+#define UHS2_IOADR_RSV_CAPS 0x06
+#define UHS2_IOADR_GENERIC_SETTINGS 0x08
+#define UHS2_IOADR_PHY_SETTINGS 0x0A
+#define UHS2_IOADR_LINK_SETTINGS 0x0C
+#define UHS2_IOADR_PRESET 0x40
+
+/* SD application packets */
+#define UHS2_SD_CMD_INDEX_POS 8
+
+#define UHS2_SD_CMD_APP_POS 14
+#define UHS2_SD_CMD_APP (1 << UHS2_SD_CMD_APP_POS)
+
+struct uhs2_command {
+ u16 header;
+ u16 arg;
+ u32 *payload;
+ u32 payload_len;
+ u32 packet_len;
+ u8 *resp;
+ u8 resp_len;
+};
+
+struct uhs2_host_caps {
+ u32 dap;
+ u32 gap;
+ u32 maxblk_len;
+ u32 n_fcu;
+ u8 n_lanes;
+ u8 addr64;
+ u8 card_type;
+ u8 phy_rev;
+ u8 speed_range;
+ u8 can_hibernate;
+ u8 n_lss_sync;
+ u8 n_lss_dir;
+ u8 link_rev;
+ u8 host_type;
+ u8 n_data_gap;
+
+ u32 maxblk_len_set;
+ u32 n_fcu_set;
+ u8 n_lanes_set;
+ u8 n_lss_sync_set;
+ u8 n_lss_dir_set;
+ u8 n_data_gap_set;
+ u8 max_retry_set;
+};
+
+struct uhs2_card_prop {
+ u32 node_id;
+ u32 dap;
+ u32 gap;
+ u32 n_fcu;
+ u32 maxblk_len;
+ u8 n_lanes;
+ u8 dadr_len;
+ u8 app_type;
+ u8 phy_minor_rev;
+ u8 phy_major_rev;
+ u8 can_hibernate;
+ u8 n_lss_sync;
+ u8 n_lss_dir;
+ u8 link_minor_rev;
+ u8 link_major_rev;
+ u8 dev_type;
+ u8 n_data_gap;
+
+ u32 n_fcu_set;
+ u32 maxblk_len_set;
+ u8 n_lanes_set;
+ u8 speed_range_set;
+ u8 n_lss_sync_set;
+ u8 n_lss_dir_set;
+ u8 n_data_gap_set;
+ u8 pwrctrl_mode_set;
+ u8 max_retry_set;
+
+ u8 cfg_complete;
+};
+
+enum uhs2_act {
+ SET_CONFIG,
+ ENABLE_INT,
+ DISABLE_INT,
+ SET_SPEED_B,
+ CHECK_DORMANT,
+};
+
+/* UHS-II Device Registers */
+#define UHS2_DEV_CONFIG_REG 0x000
+
+/* General Caps and Settings registers */
+#define UHS2_DEV_CONFIG_GEN_CAPS (UHS2_DEV_CONFIG_REG + 0x000)
+#define UHS2_DEV_CONFIG_N_LANES_POS 8
+#define UHS2_DEV_CONFIG_N_LANES_MASK 0x3F
+#define UHS2_DEV_CONFIG_2L_HD_FD 0x1
+#define UHS2_DEV_CONFIG_2D1U_FD 0x2
+#define UHS2_DEV_CONFIG_1D2U_FD 0x4
+#define UHS2_DEV_CONFIG_2D2U_FD 0x8
+#define UHS2_DEV_CONFIG_DADR_POS 14
+#define UHS2_DEV_CONFIG_DADR_MASK 0x1
+#define UHS2_DEV_CONFIG_APP_POS 16
+#define UHS2_DEV_CONFIG_APP_MASK 0xFF
+#define UHS2_DEV_CONFIG_APP_SD_MEM 0x1
+
+#define UHS2_DEV_CONFIG_GEN_SET (UHS2_DEV_CONFIG_REG + 0x008)
+#define UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD 0x0
+#define UHS2_DEV_CONFIG_GEN_SET_CFG_COMPLETE (0x1 << 31)
+
+/* PHY Caps and Settings registers */
+#define UHS2_DEV_CONFIG_PHY_CAPS (UHS2_DEV_CONFIG_REG + 0x002)
+#define UHS2_DEV_CONFIG_PHY_MINOR_MASK 0xF
+#define UHS2_DEV_CONFIG_PHY_MAJOR_POS 4
+#define UHS2_DEV_CONFIG_PHY_MAJOR_MASK 0x3
+#define UHS2_DEV_CONFIG_CAN_HIBER_POS 15
+#define UHS2_DEV_CONFIG_CAN_HIBER_MASK 0x1
+#define UHS2_DEV_CONFIG_PHY_CAPS1 (UHS2_DEV_CONFIG_REG + 0x003)
+#define UHS2_DEV_CONFIG_N_LSS_SYN_MASK 0xF
+#define UHS2_DEV_CONFIG_N_LSS_DIR_POS 4
+#define UHS2_DEV_CONFIG_N_LSS_DIR_MASK 0xF
+
+#define UHS2_DEV_CONFIG_PHY_SET (UHS2_DEV_CONFIG_REG + 0x00A)
+#define UHS2_DEV_CONFIG_PHY_SET_SPEED_POS 6
+#define UHS2_DEV_CONFIG_PHY_SET_SPEED_A 0x0
+#define UHS2_DEV_CONFIG_PHY_SET_SPEED_B 0x1
+
+/* LINK-TRAN Caps and Settins registers */
+#define UHS2_DEV_CONFIG_LINK_TRAN_CAPS (UHS2_DEV_CONFIG_REG + 0x004)
+#define UHS2_DEV_CONFIG_LT_MINOR_MASK 0xF
+#define UHS2_DEV_CONFIG_LT_MAJOR_POS 4
+#define UHS2_DEV_CONFIG_LT_MAJOR_MASK 0x3
+#define UHS2_DEV_CONFIG_N_FCU_POS 8
+#define UHS2_DEV_CONFIG_N_FCU_MASK 0xFF
+#define UHS2_DEV_CONFIG_DEV_TYPE_POS 16
+#define UHS2_DEV_CONFIG_DEV_TYPE_MASK 0x7
+#define UHS2_DEV_CONFIG_MAX_BLK_LEN_POS 20
+#define UHS2_DEV_CONFIG_MAX_BLK_LEN_MASK 0xFFF
+#define UHS2_DEV_CONFIG_LINK_TRAN_CAPS1 (UHS2_DEV_CONFIG_REG + 0x005)
+#define UHS2_DEV_CONFIG_N_DATA_GAP_MASK 0xFF
+
+#define UHS2_DEV_CONFIG_LINK_TRAN_SET (UHS2_DEV_CONFIG_REG + 0x00C)
+#define UHS2_DEV_CONFIG_LT_SET_MAX_BLK_LEN 0x200
+#define UHS2_DEV_CONFIG_LT_SET_MAX_RETRY_POS 16
+
+/* Preset register */
+#define UHS2_DEV_CONFIG_PRESET (UHS2_DEV_CONFIG_REG + 0x040)
+
+#define UHS2_DEV_INT_REG 0x100
+
+#define UHS2_DEV_STATUS_REG 0x180
+
+#define UHS2_DEV_CMD_REG 0x200
+#define UHS2_DEV_CMD_FULL_RESET (UHS2_DEV_CMD_REG + 0x000)
+#define UHS2_DEV_CMD_GO_DORMANT_STATE (UHS2_DEV_CMD_REG + 0x001)
+#define UHS2_DEV_CMD_DORMANT_HIBER (0x1 << 7)
+#define UHS2_DEV_CMD_DEVICE_INIT (UHS2_DEV_CMD_REG + 0x002)
+#define UHS2_DEV_CMD_ENUMERATE (UHS2_DEV_CMD_REG + 0x003)
+#define UHS2_DEV_CMD_TRANS_ABORT (UHS2_DEV_CMD_REG + 0x004)
+
+#define UHS2_RCLK_MAX 52000000
+#define UHS2_RCLK_MIN 26000000
+
+#endif /* LINUX_MMC_UHS2_H */
--
2.24.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* Re: [RFC PATCH v2 3/6] mmc: host: Add UHS-II support in host layer
2020-01-09 9:14 ` [RFC PATCH v2 3/6] mmc: host: Add UHS-II support in host layer Ben Chuang
@ 2020-03-17 8:17 ` Adrian Hunter
2020-03-18 6:53 ` Ben Chuang
0 siblings, 1 reply; 12+ messages in thread
From: Adrian Hunter @ 2020-03-17 8:17 UTC (permalink / raw)
To: Ben Chuang, ulf.hansson; +Cc: linux-mmc, linux-kernel, greg.tu, ben.chuang
On 9/01/20 11:14 am, Ben Chuang wrote:
> From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
>
> Add UHS-II support in host layer
Split host layer changes from sdhci changes.
>
> Reported-by: kbuild test robot <lkp@intel.com>
Drop "Reported-by: kbuild test robot <lkp@intel.com>"
> Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
> ---
> drivers/mmc/host/Makefile | 1 +
> drivers/mmc/host/{sdhci.c => sdhci-core.c} | 276 ++++++--
> drivers/mmc/host/sdhci-milbeaut.c | 4 +-
> drivers/mmc/host/sdhci-of-arasan.c | 4 +-
> drivers/mmc/host/sdhci-of-at91.c | 4 +-
> drivers/mmc/host/sdhci-omap.c | 2 +-
> drivers/mmc/host/sdhci-pci-core.c | 4 +-
> drivers/mmc/host/sdhci-pxav3.c | 4 +-
> drivers/mmc/host/sdhci-uhs2.c | 751 +++++++++++++++++++++
> drivers/mmc/host/sdhci-uhs2.h | 34 +
> drivers/mmc/host/sdhci-xenon.c | 4 +-
> drivers/mmc/host/sdhci.h | 284 +++++++-
> drivers/mmc/host/sdhci_am654.c | 4 +-
> include/linux/mmc/uhs2.h | 270 ++++++++
> 14 files changed, 1583 insertions(+), 63 deletions(-)
> rename drivers/mmc/host/{sdhci.c => sdhci-core.c} (94%)
> create mode 100644 drivers/mmc/host/sdhci-uhs2.c
> create mode 100644 drivers/mmc/host/sdhci-uhs2.h
> create mode 100644 include/linux/mmc/uhs2.h
Please make sdhci-uhs2 a module and do not rename sdhci.c.
References in sdhci.c to sdhci-uhs2.c will need to be enclosed by
#if IS_REACHABLE(CONFIG_SDHCI_UHS2)
Move all UHS-II definitions into sdhci-uhs2.h. Things that are for V4 but
not necessarily UHS-II can be in sdhci.h
Make the set_power parameter change into a separate patch
Fix all spelling mistakes
Make comment style correct.
Review all checkpatch warnings and checks (i.e. --strict option)
If possible provide a link to a tree that contains the patches.
Re-base on Ulf's next branch
The patch set could use an overview of how UHS-II is different from regular SD.
In other patches there are a bunch of memory allocations on the I/O path.
That is a problem. Memory needed should be allocated in advance.
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [RFC PATCH v2 3/6] mmc: host: Add UHS-II support in host layer
2020-03-17 8:17 ` Adrian Hunter
@ 2020-03-18 6:53 ` Ben Chuang
0 siblings, 0 replies; 12+ messages in thread
From: Ben Chuang @ 2020-03-18 6:53 UTC (permalink / raw)
To: Adrian Hunter
Cc: Ulf Hansson, linux-mmc, Linux Kernel Mailing List, greg.tu, Ben Chuang
On Tue, Mar 17, 2020 at 4:18 PM Adrian Hunter <adrian.hunter@intel.com> wrote:
>
> On 9/01/20 11:14 am, Ben Chuang wrote:
> > From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
> >
> > Add UHS-II support in host layer
>
> Split host layer changes from sdhci changes.
>
> >
> > Reported-by: kbuild test robot <lkp@intel.com>
>
> Drop "Reported-by: kbuild test robot <lkp@intel.com>"
>
> > Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
> > ---
> > drivers/mmc/host/Makefile | 1 +
> > drivers/mmc/host/{sdhci.c => sdhci-core.c} | 276 ++++++--
> > drivers/mmc/host/sdhci-milbeaut.c | 4 +-
> > drivers/mmc/host/sdhci-of-arasan.c | 4 +-
> > drivers/mmc/host/sdhci-of-at91.c | 4 +-
> > drivers/mmc/host/sdhci-omap.c | 2 +-
> > drivers/mmc/host/sdhci-pci-core.c | 4 +-
> > drivers/mmc/host/sdhci-pxav3.c | 4 +-
> > drivers/mmc/host/sdhci-uhs2.c | 751 +++++++++++++++++++++
> > drivers/mmc/host/sdhci-uhs2.h | 34 +
> > drivers/mmc/host/sdhci-xenon.c | 4 +-
> > drivers/mmc/host/sdhci.h | 284 +++++++-
> > drivers/mmc/host/sdhci_am654.c | 4 +-
> > include/linux/mmc/uhs2.h | 270 ++++++++
> > 14 files changed, 1583 insertions(+), 63 deletions(-)
> > rename drivers/mmc/host/{sdhci.c => sdhci-core.c} (94%)
> > create mode 100644 drivers/mmc/host/sdhci-uhs2.c
> > create mode 100644 drivers/mmc/host/sdhci-uhs2.h
> > create mode 100644 include/linux/mmc/uhs2.h
>
> Please make sdhci-uhs2 a module and do not rename sdhci.c.
>
> References in sdhci.c to sdhci-uhs2.c will need to be enclosed by
> #if IS_REACHABLE(CONFIG_SDHCI_UHS2)
>
> Move all UHS-II definitions into sdhci-uhs2.h. Things that are for V4 but
> not necessarily UHS-II can be in sdhci.h
>
> Make the set_power parameter change into a separate patch
>
> Fix all spelling mistakes
>
> Make comment style correct.
>
> Review all checkpatch warnings and checks (i.e. --strict option)
>
> If possible provide a link to a tree that contains the patches.
>
> Re-base on Ulf's next branch
>
> The patch set could use an overview of how UHS-II is different from regular SD.
>
> In other patches there are a bunch of memory allocations on the I/O path.
> That is a problem. Memory needed should be allocated in advance.
Thanks for your comments and guidance.
There seems to be a lot of work to do. I will do my best to meet these.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [RFC PATCH v2 4/6] mmc: uhs2: Introduce a uhs2_post_attach_sd function
2020-01-09 9:13 [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
` (2 preceding siblings ...)
2020-01-09 9:14 ` [RFC PATCH v2 3/6] mmc: host: Add UHS-II support in host layer Ben Chuang
@ 2020-01-09 9:14 ` Ben Chuang
2020-01-09 9:15 ` [RFC PATCH v2 5/6] mmc: sdhci-uhs2: Introduce a uhs2_pre_detect_init function Ben Chuang
` (2 subsequent siblings)
6 siblings, 0 replies; 12+ messages in thread
From: Ben Chuang @ 2020-01-09 9:14 UTC (permalink / raw)
To: adrian.hunter, ulf.hansson
Cc: linux-mmc, linux-kernel, greg.tu, ben.chuang, Ben Chuang
From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Introduce a uhs2_post_attach_sd function after attach_sd on
UHS-II mode.
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
---
drivers/mmc/core/uhs2.c | 5 ++++-
drivers/mmc/host/sdhci-core.c | 9 +++++++++
drivers/mmc/host/sdhci.h | 1 +
include/linux/mmc/host.h | 1 +
4 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/core/uhs2.c b/drivers/mmc/core/uhs2.c
index 43ea155ccc59..99aeeccd88e5 100644
--- a/drivers/mmc/core/uhs2.c
+++ b/drivers/mmc/core/uhs2.c
@@ -935,8 +935,11 @@ int mmc_uhs2_try_frequency(struct mmc_host *host, unsigned int freq)
*/
err = mmc_attach_sd(host, true);
- if (!err)
+ if (!err) {
+ if (host->ops->uhs2_post_attach_sd)
+ host->ops->uhs2_post_attach_sd(host);
return 0;
+ }
init_fail:
mmc_power_off(host);
diff --git a/drivers/mmc/host/sdhci-core.c b/drivers/mmc/host/sdhci-core.c
index 82184684f963..d7b2535a847a 100644
--- a/drivers/mmc/host/sdhci-core.c
+++ b/drivers/mmc/host/sdhci-core.c
@@ -2778,6 +2778,14 @@ void sdhci_uhs2_enable_clk(struct mmc_host *mmc)
}
EXPORT_SYMBOL_GPL(sdhci_uhs2_enable_clk);
+static void sdhci_uhs2_post_attach_sd(struct mmc_host *mmc)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+
+ if (host->ops && host->ops->uhs2_post_attach_sd)
+ host->ops->uhs2_post_attach_sd(host);
+}
+
static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.post_req = sdhci_post_req,
@@ -2797,6 +2805,7 @@ static const struct mmc_host_ops sdhci_ops = {
.uhs2_set_reg = sdhci_uhs2_set_reg,
.uhs2_disable_clk = sdhci_uhs2_disable_clk,
.uhs2_enable_clk = sdhci_uhs2_enable_clk,
+ .uhs2_post_attach_sd = sdhci_uhs2_post_attach_sd,
};
/*****************************************************************************\
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 2f7732f4bb75..7f779ac81931 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -906,6 +906,7 @@ struct sdhci_ops {
void (*voltage_switch)(struct sdhci_host *host);
void (*adma_write_desc)(struct sdhci_host *host, void **desc,
dma_addr_t addr, int len, unsigned int cmd);
+ void (*uhs2_post_attach_sd)(struct sdhci_host *host);
};
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 3d6a7c9b534f..ed4ebe6bf68a 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -177,6 +177,7 @@ struct mmc_host_ops {
int (*uhs2_set_reg)(struct mmc_host *host, enum uhs2_act act);
void (*uhs2_disable_clk)(struct mmc_host *host);
void (*uhs2_enable_clk)(struct mmc_host *host);
+ void (*uhs2_post_attach_sd)(struct mmc_host *host);
};
struct mmc_cqe_ops {
--
2.24.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [RFC PATCH v2 5/6] mmc: sdhci-uhs2: Introduce a uhs2_pre_detect_init function
2020-01-09 9:13 [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
` (3 preceding siblings ...)
2020-01-09 9:14 ` [RFC PATCH v2 4/6] mmc: uhs2: Introduce a uhs2_post_attach_sd function Ben Chuang
@ 2020-01-09 9:15 ` Ben Chuang
2020-01-09 9:15 ` [RFC PATCH v2 6/6] mmc: sdhci-pci-gli: Fix power/reset/ZC/timeout for GL9755 UHS-II mode Ben Chuang
2020-01-21 9:36 ` [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
6 siblings, 0 replies; 12+ messages in thread
From: Ben Chuang @ 2020-01-09 9:15 UTC (permalink / raw)
To: adrian.hunter, ulf.hansson
Cc: linux-mmc, linux-kernel, greg.tu, ben.chuang, Ben Chuang
From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Introduce a uhs2_pre_detect_init function before detect uhs2 interface.
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
---
drivers/mmc/host/sdhci-uhs2.c | 3 +++
drivers/mmc/host/sdhci.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c
index e9c42894185a..9f53b7b938b9 100644
--- a/drivers/mmc/host/sdhci-uhs2.c
+++ b/drivers/mmc/host/sdhci-uhs2.c
@@ -506,6 +506,9 @@ int sdhci_uhs2_do_detect_init(struct sdhci_host *host)
DBG("%s: begin UHS2 init.\n", __func__);
spin_lock_irqsave(&host->lock, flags);
+ if (host->ops && host->ops->uhs2_pre_detect_init)
+ host->ops->uhs2_pre_detect_init(host);
+
if (sdhci_uhs2_interface_detect(host)) {
pr_warn("%s: cannot detect UHS2 interface.\n",
mmc_hostname(host->mmc));
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 7f779ac81931..08ee4c805474 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -906,6 +906,7 @@ struct sdhci_ops {
void (*voltage_switch)(struct sdhci_host *host);
void (*adma_write_desc)(struct sdhci_host *host, void **desc,
dma_addr_t addr, int len, unsigned int cmd);
+ void (*uhs2_pre_detect_init)(struct sdhci_host *host);
void (*uhs2_post_attach_sd)(struct sdhci_host *host);
};
--
2.24.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [RFC PATCH v2 6/6] mmc: sdhci-pci-gli: Fix power/reset/ZC/timeout for GL9755 UHS-II mode
2020-01-09 9:13 [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
` (4 preceding siblings ...)
2020-01-09 9:15 ` [RFC PATCH v2 5/6] mmc: sdhci-uhs2: Introduce a uhs2_pre_detect_init function Ben Chuang
@ 2020-01-09 9:15 ` Ben Chuang
2020-01-21 9:36 ` [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
6 siblings, 0 replies; 12+ messages in thread
From: Ben Chuang @ 2020-01-09 9:15 UTC (permalink / raw)
To: adrian.hunter, ulf.hansson
Cc: linux-mmc, linux-kernel, greg.tu, ben.chuang, Ben Chuang
From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Disable GL9755 overcurrent interrupt when power on/off on UHS-II.
Enable the internal clock when do reset on UHS-II mode.
Set ZC to 0x0 for Sandisk cards and set ZC to 0xB for others.
Increase timeout value before detecting UHS-II interface.
Add vendor settings fro UHS-II mode.
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
---
drivers/mmc/host/sdhci-pci-gli.c | 361 ++++++++++++++++++++++++++++++-
1 file changed, 360 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
index 5eea8d70a85d..1be78a609dc3 100644
--- a/drivers/mmc/host/sdhci-pci-gli.c
+++ b/drivers/mmc/host/sdhci-pci-gli.c
@@ -14,6 +14,7 @@
#include <linux/delay.h>
#include "sdhci.h"
#include "sdhci-pci.h"
+#include "sdhci-uhs2.h"
/* Genesys Logic extra registers */
#define SDHCI_GLI_9750_WT 0x800
@@ -60,6 +61,42 @@
#define SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY GENMASK(2, 0)
#define GLI_9750_TUNING_PARAMETERS_RX_DLY_VALUE 0x1
+#define PCI_GLI_9755_WT 0x800
+#define PCI_GLI_9755_WT_EN BIT(0)
+#define GLI_9755_WT_EN_ON 0x1
+#define GLI_9755_WT_EN_OFF 0x0
+
+#define PCI_GLI_9755_PLLSSC 0x68
+#define PCI_GLI_9755_PLLSSC_RTL BIT(24)
+#define GLI_9755_PLLSSC_RTL_VALUE 0x1
+#define PCI_GLI_9755_PLLSSC_TRANS_PASS BIT(27)
+#define GLI_9755_PLLSSC_TRANS_PASS_VALUE 0x1
+#define PCI_GLI_9755_PLLSSC_RECV GENMASK(29, 28)
+#define GLI_9755_PLLSSC_RECV_VALUE 0x3
+#define PCI_GLI_9755_PLLSSC_TRAN GENMASK(31, 30)
+#define GLI_9755_PLLSSC_TRAN_VALUE 0x3
+
+#define PCI_GLI_9755_UHS2_PLL 0x6C
+#define PCI_GLI_9755_UHS2_PLL_SSC GENMASK(9, 8)
+#define GLI_9755_UHS2_PLL_SSC_VALUE 0x0
+#define PCI_GLI_9755_UHS2_PLL_DELAY BIT(18)
+#define GLI_9755_UHS2_PLL_DELAY_VALUE 0x1
+#define PCI_GLI_9755_UHS2_PLL_PDRST BIT(27)
+#define GLI_9755_UHS2_PLL_PDRST_VALUE 0x1
+
+#define PCI_GLI_9755_UHS2_SERDES 0x70
+#define PCI_GLI_9755_UHS2_SERDES_INTR GENMASK(2, 0)
+#define GLI_9755_UHS2_SERDES_INTR_VALUE 0x3
+#define PCI_GLI_9755_UHS2_SERDES_ZC1 BIT(3)
+#define GLI_9755_UHS2_SERDES_ZC1_VALUE 0x0
+#define PCI_GLI_9755_UHS2_SERDES_ZC2 GENMASK(7, 4)
+#define GLI_9755_UHS2_SERDES_ZC2_DEFAULT 0xB
+#define GLI_9755_UHS2_SERDES_ZC2_SANDISK 0x0
+#define PCI_GLI_9755_UHS2_SERDES_TRAN GENMASK(27, 24)
+#define GLI_9755_UHS2_SERDES_TRAN_VALUE 0xC
+#define PCI_GLI_9755_UHS2_SERDES_RECV GENMASK(31, 28)
+#define GLI_9755_UHS2_SERDES_RECV_VALUE 0xF
+
#define GLI_MAX_TUNING_LOOP 40
/* Genesys Logic chipset */
@@ -262,6 +299,324 @@ static int gl9750_execute_tuning(struct sdhci_host *host, u32 opcode)
return 0;
}
+static inline void gl9755_wt_on(struct pci_dev *pdev)
+{
+ u32 wt_value;
+ u32 wt_enable;
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_WT, &wt_value);
+ wt_enable = FIELD_GET(PCI_GLI_9755_WT_EN, wt_value);
+
+ if (wt_enable == GLI_9755_WT_EN_ON)
+ return;
+
+ wt_value &= ~PCI_GLI_9755_WT_EN;
+ wt_value |= FIELD_PREP(PCI_GLI_9755_WT_EN, GLI_9755_WT_EN_ON);
+
+ pci_write_config_dword(pdev, PCI_GLI_9755_WT, wt_value);
+}
+
+static inline void gl9755_wt_off(struct pci_dev *pdev)
+{
+ u32 wt_value;
+ u32 wt_enable;
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_WT, &wt_value);
+ wt_enable = FIELD_GET(PCI_GLI_9755_WT_EN, wt_value);
+
+ if (wt_enable == GLI_9755_WT_EN_OFF)
+ return;
+
+ wt_value &= ~PCI_GLI_9755_WT_EN;
+ wt_value |= FIELD_PREP(PCI_GLI_9755_WT_EN, GLI_9755_WT_EN_OFF);
+
+ pci_write_config_dword(pdev, PCI_GLI_9755_WT, wt_value);
+}
+
+static void gl9755_vendor_init(struct sdhci_host *host)
+{
+ struct sdhci_pci_slot *slot = sdhci_priv(host);
+ struct pci_dev *pdev = slot->chip->pdev;
+ u32 serdes;
+ u32 pllssc;
+ u32 uhs2_pll;
+
+ gl9755_wt_on(pdev);
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_UHS2_SERDES, &serdes);
+ serdes &= ~PCI_GLI_9755_UHS2_SERDES_TRAN;
+ serdes |= FIELD_PREP(PCI_GLI_9755_UHS2_SERDES_TRAN,
+ GLI_9755_UHS2_SERDES_TRAN_VALUE);
+ serdes &= ~PCI_GLI_9755_UHS2_SERDES_RECV;
+ serdes |= FIELD_PREP(PCI_GLI_9755_UHS2_SERDES_RECV,
+ GLI_9755_UHS2_SERDES_RECV_VALUE);
+ serdes &= ~PCI_GLI_9755_UHS2_SERDES_INTR;
+ serdes |= FIELD_PREP(PCI_GLI_9755_UHS2_SERDES_INTR,
+ GLI_9755_UHS2_SERDES_INTR_VALUE);
+ serdes &= ~PCI_GLI_9755_UHS2_SERDES_ZC1;
+ serdes |= FIELD_PREP(PCI_GLI_9755_UHS2_SERDES_ZC1,
+ GLI_9755_UHS2_SERDES_ZC1_VALUE);
+ serdes &= ~PCI_GLI_9755_UHS2_SERDES_ZC2;
+ serdes |= FIELD_PREP(PCI_GLI_9755_UHS2_SERDES_ZC2,
+ GLI_9755_UHS2_SERDES_ZC2_DEFAULT);
+ pci_write_config_dword(pdev, PCI_GLI_9755_UHS2_SERDES, serdes);
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_UHS2_PLL, &uhs2_pll);
+ uhs2_pll &= ~PCI_GLI_9755_UHS2_PLL_SSC;
+ uhs2_pll |= FIELD_PREP(PCI_GLI_9755_UHS2_PLL_SSC,
+ GLI_9755_UHS2_PLL_SSC_VALUE);
+ uhs2_pll &= ~PCI_GLI_9755_UHS2_PLL_DELAY;
+ uhs2_pll |= FIELD_PREP(PCI_GLI_9755_UHS2_PLL_DELAY,
+ GLI_9755_UHS2_PLL_DELAY_VALUE);
+ uhs2_pll &= ~PCI_GLI_9755_UHS2_PLL_PDRST;
+ uhs2_pll |= FIELD_PREP(PCI_GLI_9755_UHS2_PLL_PDRST,
+ GLI_9755_UHS2_PLL_PDRST_VALUE);
+ pci_write_config_dword(pdev, PCI_GLI_9755_UHS2_PLL, uhs2_pll);
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_PLLSSC, &pllssc);
+ pllssc &= ~PCI_GLI_9755_PLLSSC_RTL;
+ pllssc |= FIELD_PREP(PCI_GLI_9755_PLLSSC_RTL,
+ GLI_9755_PLLSSC_RTL_VALUE);
+ pllssc &= ~PCI_GLI_9755_PLLSSC_TRANS_PASS;
+ pllssc |= FIELD_PREP(PCI_GLI_9755_PLLSSC_TRANS_PASS,
+ GLI_9755_PLLSSC_TRANS_PASS_VALUE);
+ pllssc &= ~PCI_GLI_9755_PLLSSC_RECV;
+ pllssc |= FIELD_PREP(PCI_GLI_9755_PLLSSC_RECV,
+ GLI_9755_PLLSSC_RECV_VALUE);
+ pllssc &= ~PCI_GLI_9755_PLLSSC_TRAN;
+ pllssc |= FIELD_PREP(PCI_GLI_9755_PLLSSC_TRAN,
+ GLI_9755_PLLSSC_TRAN_VALUE);
+ pci_write_config_dword(pdev, PCI_GLI_9755_PLLSSC, pllssc);
+
+ gl9755_wt_off(pdev);
+}
+
+static void gl9755_pre_detect_init(struct sdhci_host *host)
+{
+ /* GL9755 need more time on UHS2 detect flow */
+ sdhci_writeb(host, 0xA7, SDHCI_UHS2_TIMER_CTRL);
+}
+
+static void gl9755_post_attach_sd(struct sdhci_host *host)
+{
+ struct pci_dev *pdev;
+ struct sdhci_pci_chip *chip;
+ struct sdhci_pci_slot *slot;
+ u32 serdes;
+
+ slot = sdhci_priv(host);
+ chip = slot->chip;
+ pdev = chip->pdev;
+
+ gl9755_wt_on(pdev);
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_UHS2_SERDES, &serdes);
+ serdes &= ~PCI_GLI_9755_UHS2_SERDES_ZC1;
+ serdes &= ~PCI_GLI_9755_UHS2_SERDES_ZC2;
+ serdes |= FIELD_PREP(PCI_GLI_9755_UHS2_SERDES_ZC1,
+ GLI_9755_UHS2_SERDES_ZC1_VALUE);
+
+ /* the manfid of sandisk card is 0x3 */
+ if (host->mmc->card->cid.manfid == 0x3)
+ serdes |= FIELD_PREP(PCI_GLI_9755_UHS2_SERDES_ZC2,
+ GLI_9755_UHS2_SERDES_ZC2_SANDISK);
+ else
+ serdes |= FIELD_PREP(PCI_GLI_9755_UHS2_SERDES_ZC2,
+ GLI_9755_UHS2_SERDES_ZC2_DEFAULT);
+
+ pci_write_config_dword(pdev, PCI_GLI_9755_UHS2_SERDES, serdes);
+
+ gl9755_wt_off(pdev);
+}
+
+static void gl9755_overcurrent_event_enable(struct sdhci_host *host,
+ bool enable)
+{
+ u32 mask;
+
+ mask = sdhci_readl(host, SDHCI_SIGNAL_ENABLE);
+ if (enable)
+ mask |= SDHCI_INT_BUS_POWER;
+ else
+ mask &= ~SDHCI_INT_BUS_POWER;
+
+ sdhci_writel(host, mask, SDHCI_SIGNAL_ENABLE);
+
+ mask = sdhci_readl(host, SDHCI_INT_ENABLE);
+ if (enable)
+ mask |= SDHCI_INT_BUS_POWER;
+ else
+ mask &= ~SDHCI_INT_BUS_POWER;
+
+ sdhci_writel(host, mask, SDHCI_INT_ENABLE);
+}
+
+static void gl9755_set_power(struct sdhci_host *host, unsigned char mode,
+ unsigned short vdd, unsigned short vdd2)
+{
+ u8 pwr = 0;
+
+ if (mode != MMC_POWER_OFF) {
+ switch (1 << vdd) {
+ case MMC_VDD_165_195:
+ /*
+ * Without a regulator, SDHCI does not support 2.0v
+ * so we only get here if the driver deliberately
+ * added the 2.0v range to ocr_avail. Map it to 1.8v
+ * for the purpose of turning on the power.
+ */
+ case MMC_VDD_20_21:
+ pwr = SDHCI_POWER_180;
+ break;
+ case MMC_VDD_29_30:
+ case MMC_VDD_30_31:
+ pwr = SDHCI_POWER_300;
+ break;
+ case MMC_VDD_32_33:
+ case MMC_VDD_33_34:
+ pwr = SDHCI_POWER_330;
+ break;
+ default:
+ WARN(1, "%s: Invalid vdd %#x\n",
+ mmc_hostname(host->mmc), vdd);
+ break;
+ }
+ }
+
+ if (mode != MMC_POWER_OFF) {
+ if (vdd2 != (unsigned short)-1) {
+ switch (1 << vdd2) {
+ case MMC_VDD2_165_195:
+ pwr |= SDHCI_VDD2_POWER_180;
+ break;
+ default:
+ WARN(1, "%s: Invalid vdd2 %#x\n",
+ mmc_hostname(host->mmc), vdd2);
+ break;
+ }
+ }
+ }
+
+ if (host->pwr == pwr)
+ return;
+
+ host->pwr = pwr;
+
+ if (pwr == 0) {
+ gl9755_overcurrent_event_enable(host, false);
+ sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
+ } else {
+ gl9755_overcurrent_event_enable(host, false);
+ sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
+
+ pwr |= SDHCI_POWER_ON;
+ if (vdd2 != (unsigned short)-1)
+ pwr |= SDHCI_VDD2_POWER_ON;
+
+ sdhci_writeb(host, pwr&0xf, SDHCI_POWER_CONTROL);
+ /* wait stable */
+ mdelay(5);
+ sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
+ /* wait stable */
+ mdelay(5);
+ gl9755_overcurrent_event_enable(host, true);
+ }
+}
+
+static bool sdhci_wait_clock_stable(struct sdhci_host *host)
+{
+ u16 clk = 0;
+ ktime_t timeout;
+
+ /* Wait max 20 ms */
+ timeout = ktime_add_ms(ktime_get(), 20);
+ while (1) {
+ bool timedout = ktime_after(ktime_get(), timeout);
+
+ clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ if (clk & SDHCI_CLOCK_INT_STABLE)
+ break;
+ if (timedout) {
+ pr_err("%s: Internal clock never stabilised.\n",
+ mmc_hostname(host->mmc));
+ sdhci_dumpregs(host);
+ return false;
+ }
+ udelay(10);
+ }
+ return true;
+}
+
+static void gl9755_uhs2_reset_sd_tran(struct sdhci_host *host)
+{
+ /* do this on UHS2 mode */
+ if (host->mmc->flags & MMC_UHS2_INITIALIZED) {
+ sdhci_uhs2_reset(host, SDHCI_UHS2_SW_RESET_SD);
+ sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
+ sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
+ sdhci_uhs2_clear_set_irqs(host,
+ SDHCI_INT_ALL_MASK,
+ SDHCI_UHS2_ERR_INT_STATUS_MASK);
+ }
+}
+
+static void sdhci_gl9755_reset(struct sdhci_host *host, u8 mask)
+{
+ ktime_t timeout;
+ u16 ctrl2;
+ u16 clk_ctrl;
+
+ /* need internal clock */
+ if (mask & SDHCI_RESET_ALL) {
+ ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ clk_ctrl = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+
+ if ((ctrl2 & SDHCI_CTRL_V4_MODE) &&
+ (ctrl2 & SDHCI_CTRL_UHS2_INTERFACE_EN)) {
+ sdhci_writew(host,
+ SDHCI_CLOCK_INT_EN,
+ SDHCI_CLOCK_CONTROL);
+ } else {
+ sdhci_writew(host,
+ SDHCI_CLOCK_INT_EN,
+ SDHCI_CLOCK_CONTROL);
+ sdhci_wait_clock_stable(host);
+ sdhci_writew(host,
+ SDHCI_CTRL_V4_MODE,
+ SDHCI_HOST_CONTROL2);
+ }
+ }
+
+ sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
+
+ /* reset sd-tran on UHS2 mode if need to reset cmd/data */
+ if ((mask & SDHCI_RESET_CMD) | (mask & SDHCI_RESET_DATA))
+ gl9755_uhs2_reset_sd_tran(host);
+
+ if (mask & SDHCI_RESET_ALL)
+ host->clock = 0;
+
+ /* Wait max 100 ms */
+ timeout = ktime_add_ms(ktime_get(), 100);
+
+ /* hw clears the bit when it's done */
+ while (1) {
+ bool timedout = ktime_after(ktime_get(), timeout);
+
+ if (!(sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask))
+ break;
+ if (timedout) {
+ pr_err("%s: Reset 0x%x never completed.\n",
+ mmc_hostname(host->mmc), (int)mask);
+ sdhci_dumpregs(host);
+ /* manual clear */
+ sdhci_writeb(host, 0, SDHCI_SOFTWARE_RESET);
+ return;
+ }
+ udelay(10);
+ }
+}
+
static int gli_probe_slot_gl9750(struct sdhci_pci_slot *slot)
{
struct sdhci_host *host = slot->host;
@@ -278,6 +633,7 @@ static int gli_probe_slot_gl9755(struct sdhci_pci_slot *slot)
slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO;
sdhci_enable_v4_mode(host);
+ gl9755_vendor_init(host);
return 0;
}
@@ -319,11 +675,14 @@ static u32 sdhci_gl9750_readl(struct sdhci_host *host, int reg)
static const struct sdhci_ops sdhci_gl9755_ops = {
.set_clock = sdhci_set_clock,
+ .set_power = gl9755_set_power,
.enable_dma = sdhci_pci_enable_dma,
.set_bus_width = sdhci_set_bus_width,
- .reset = sdhci_reset,
+ .reset = sdhci_gl9755_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
.voltage_switch = sdhci_gli_voltage_switch,
+ .uhs2_pre_detect_init = gl9755_pre_detect_init,
+ .uhs2_post_attach_sd = gl9755_post_attach_sd,
};
const struct sdhci_pci_fixes sdhci_gl9755 = {
--
2.24.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* Re: [RFC PATCH v2 0/6] Add support UHS-II for GL9755
2020-01-09 9:13 [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
` (5 preceding siblings ...)
2020-01-09 9:15 ` [RFC PATCH v2 6/6] mmc: sdhci-pci-gli: Fix power/reset/ZC/timeout for GL9755 UHS-II mode Ben Chuang
@ 2020-01-21 9:36 ` Ben Chuang
2020-01-21 12:01 ` Ulf Hansson
6 siblings, 1 reply; 12+ messages in thread
From: Ben Chuang @ 2020-01-21 9:36 UTC (permalink / raw)
To: Adrian Hunter, Ulf Hansson
Cc: linux-mmc, Linux Kernel Mailing List, greg.tu, Ben Chuang
Hi Uffe and Adrian,
On Thu, Jan 9, 2020 at 5:13 PM Ben Chuang <benchuanggli@gmail.com> wrote:
>
> Hi Uffe and Adrian,
>
> These patches support UHS-II and fix GL9755 UHS-II compatibility.
>
> The parts of UHS-II are based on [1][2] and porting to Linux 5.5-rc5.
> I have seen that Uffe comment that splitting the UHS-II parts into smaller
> patches. Other than splitting into small patches, could you give me some
> suggestions for refactoring/splitting files?
>
> Best regards,
> Ben
Gentle Ping, Any comments?
Best regards,
Ben
>
> References:
> 1. [RFC,1/2] mmc: core: support UHS-II in core stack.
> (https://patchwork.kernel.org/patch/5544441/)
> 2. [RFC,2/2] mmc: sdhci: support UHS-II in SDHCI host.
> (https://patchwork.kernel.org/patch/5544451/)
>
> v2:
> - base on Linux v5.5-rc5
>
> Ben Chuang (6):
> mmc: Add UHS-II support in public headers
> mmc: core: Add UHS-II support in core layer
> mmc: host: Add UHS-II support in host layer
> mmc: uhs2: Introduce a uhs2_post_attach_sd function
> mmc: sdhci-uhs2: Introduce a uhs2_pre_detect_init function
> mmc: sdhci-pci-gli: Fix power/reset/ZC/timeout for GL9755 UHS-II mode
>
> drivers/mmc/core/Makefile | 3 +-
> drivers/mmc/core/block.c | 7 +-
> drivers/mmc/core/bus.c | 5 +-
> drivers/mmc/core/core.c | 65 +-
> drivers/mmc/core/core.h | 3 +-
> drivers/mmc/core/regulator.c | 14 +
> drivers/mmc/core/sd.c | 27 +-
> drivers/mmc/core/sd_ops.c | 12 +
> drivers/mmc/core/uhs2.c | 995 +++++++++++++++++++++
> drivers/mmc/core/uhs2.h | 23 +
> drivers/mmc/host/Makefile | 1 +
> drivers/mmc/host/{sdhci.c => sdhci-core.c} | 285 +++++-
> drivers/mmc/host/sdhci-milbeaut.c | 4 +-
> drivers/mmc/host/sdhci-of-arasan.c | 4 +-
> drivers/mmc/host/sdhci-of-at91.c | 4 +-
> drivers/mmc/host/sdhci-omap.c | 2 +-
> drivers/mmc/host/sdhci-pci-core.c | 4 +-
> drivers/mmc/host/sdhci-pci-gli.c | 361 +++++++-
> drivers/mmc/host/sdhci-pxav3.c | 4 +-
> drivers/mmc/host/sdhci-uhs2.c | 754 ++++++++++++++++
> drivers/mmc/host/sdhci-uhs2.h | 34 +
> drivers/mmc/host/sdhci-xenon.c | 4 +-
> drivers/mmc/host/sdhci.h | 286 +++++-
> drivers/mmc/host/sdhci_am654.c | 4 +-
> include/linux/mmc/card.h | 1 +
> include/linux/mmc/core.h | 6 +
> include/linux/mmc/host.h | 31 +
> include/linux/mmc/uhs2.h | 270 ++++++
> 28 files changed, 3137 insertions(+), 76 deletions(-)
> create mode 100644 drivers/mmc/core/uhs2.c
> create mode 100644 drivers/mmc/core/uhs2.h
> rename drivers/mmc/host/{sdhci.c => sdhci-core.c} (94%)
> create mode 100644 drivers/mmc/host/sdhci-uhs2.c
> create mode 100644 drivers/mmc/host/sdhci-uhs2.h
> create mode 100644 include/linux/mmc/uhs2.h
>
>
> base-commit: c79f46a282390e0f5b306007bf7b11a46d529538
> --
> 2.24.1
>
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [RFC PATCH v2 0/6] Add support UHS-II for GL9755
2020-01-21 9:36 ` [RFC PATCH v2 0/6] Add support UHS-II for GL9755 Ben Chuang
@ 2020-01-21 12:01 ` Ulf Hansson
2020-01-22 13:36 ` Ben Chuang
0 siblings, 1 reply; 12+ messages in thread
From: Ulf Hansson @ 2020-01-21 12:01 UTC (permalink / raw)
To: Ben Chuang
Cc: Adrian Hunter, linux-mmc, Linux Kernel Mailing List, greg.tu, Ben Chuang
On Tue, 21 Jan 2020 at 10:37, Ben Chuang <benchuanggli@gmail.com> wrote:
>
> Hi Uffe and Adrian,
>
> On Thu, Jan 9, 2020 at 5:13 PM Ben Chuang <benchuanggli@gmail.com> wrote:
> >
> > Hi Uffe and Adrian,
> >
> > These patches support UHS-II and fix GL9755 UHS-II compatibility.
> >
> > The parts of UHS-II are based on [1][2] and porting to Linux 5.5-rc5.
> > I have seen that Uffe comment that splitting the UHS-II parts into smaller
> > patches. Other than splitting into small patches, could you give me some
> > suggestions for refactoring/splitting files?
> >
> > Best regards,
> > Ben
>
> Gentle Ping, Any comments?
I coming to this, but I need some additional time. In any case, thanks
for posting this and for pinging!
[...]
Kind regards
Uffe
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [RFC PATCH v2 0/6] Add support UHS-II for GL9755
2020-01-21 12:01 ` Ulf Hansson
@ 2020-01-22 13:36 ` Ben Chuang
0 siblings, 0 replies; 12+ messages in thread
From: Ben Chuang @ 2020-01-22 13:36 UTC (permalink / raw)
To: Ulf Hansson
Cc: Adrian Hunter, linux-mmc, Linux Kernel Mailing List, greg.tu, Ben Chuang
On Tue, Jan 21, 2020 at 8:02 PM Ulf Hansson <ulf.hansson@linaro.org> wrote:
>
> On Tue, 21 Jan 2020 at 10:37, Ben Chuang <benchuanggli@gmail.com> wrote:
> >
> > Hi Uffe and Adrian,
> >
> > On Thu, Jan 9, 2020 at 5:13 PM Ben Chuang <benchuanggli@gmail.com> wrote:
> > >
> > > Hi Uffe and Adrian,
> > >
> > > These patches support UHS-II and fix GL9755 UHS-II compatibility.
> > >
> > > The parts of UHS-II are based on [1][2] and porting to Linux 5.5-rc5.
> > > I have seen that Uffe comment that splitting the UHS-II parts into smaller
> > > patches. Other than splitting into small patches, could you give me some
> > > suggestions for refactoring/splitting files?
> > >
> > > Best regards,
> > > Ben
> >
> > Gentle Ping, Any comments?
>
> I coming to this, but I need some additional time. In any case, thanks
> for posting this and for pinging!
>
Thank you for taking the time and pinging back quickly. :-)
I will wait patiently for the next reply.
> [...]
>
> Kind regards
> Uffe
Best regards,
Ben
^ permalink raw reply [flat|nested] 12+ messages in thread