[U-Boot] [RFC PATCH] mmc: omap_hsmmc: convert to use dm block devies
Grygorii Strashko
grygorii.strashko at ti.com
Thu Feb 2 22:18:01 UTC 2017
Convert OMAP hsmmc driver to use driver-model block devices.
Signed-off-by: Grygorii Strashko <grygorii.strashko at ti.com>
---
Hi All,
First of all, sorry if my questions/problems are looks dumb, I'm very new with u-boot.
This is my attampt to enable CONFIG_BLK on OMAP platforms which is blocked now
by omap_hsmmc driver. omap_hsmmc required to be updated to use driver-model block
devices at minimum (and max to use dm_mmc_ops). Also, as per my understanding,
CONFIG_BLK is blocker for other tasks like enabling driver model for OMAP sata devices.
With this patch I can boot from mmc on am335x-evm, but there are
two problems I need help with:
1) My changes in Makefiles looks really ugly, but without them SPL build will
fail because undef'ing in include/configs/am335x_evm.h does not take effect
in Makefile (thanks Vignesh for the information [1]) and I, honestly, do not
know how to fix it in better way, so I'd be appreciated for any help.
Comparing to Vignesh's case, files which need to be excluded from build
are generic and I worry that there can be dependecy from CONFIG_SPL_DM.
2) with this patch I can see error message in log "** Bad device size - mmc 0 **":
U-Boot 2017.03-rc1-00020-g1a3b11a-dirty (Feb 02 2017 - 12:04:01 -0600)
CPU : AM335X-GP rev 2.0
Model: TI AM335x EVM
DRAM: 1 GiB
NAND: 256 MiB
MMC: mmc at 48060000mmc@47810000OMAP SD/MMC: 0, OMAP SD/MMC: 1
** Bad device size - mmc 0 **
Using default environment
this message is triggered from:
board_r.c: initr_env()
- env_common.c: env_relocate()
- env_fat.c: env_relocate_spec()
- part.c: blk_get_device_part_str()
because partitions are not initialized yet, as i understood,
Seems there are should be additional call to mmc_init():mmc_startup():part_init(),
but I'm not sure where/how to add it correctly.
Thanks.
[1] http://lists.denx.de/pipermail/u-boot/2016-August/262447.html
configs/am335x_evm_defconfig | 1 -
drivers/block/Makefile | 6 ++++-
drivers/mmc/Makefile | 8 ++++---
drivers/mmc/omap_hsmmc.c | 55 ++++++++++++++++++++++++++++++++------------
include/configs/am335x_evm.h | 1 +
5 files changed, 51 insertions(+), 20 deletions(-)
diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig
index 6f624e9..d36e7d4 100644
--- a/configs/am335x_evm_defconfig
+++ b/configs/am335x_evm_defconfig
@@ -30,7 +30,6 @@ CONFIG_CMD_GPIO=y
CONFIG_CMD_EXT4_WRITE=y
CONFIG_OF_CONTROL=y
CONFIG_OF_LIST="am335x-evm am335x-bone am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2"
-# CONFIG_BLK is not set
CONFIG_DFU_MMC=y
CONFIG_DFU_NAND=y
CONFIG_DFU_RAM=y
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 41217c1..44baee3 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -5,12 +5,16 @@
# SPDX-License-Identifier: GPL-2.0+
#
-obj-$(CONFIG_BLK) += blk-uclass.o
+obj-$(CONFIG_$(SPL_)BLK) += blk-uclass.o
ifndef CONFIG_BLK
obj-y += blk_legacy.o
endif
+ifdef SPL_
+obj-y += blk_legacy.o
+endif
+
obj-$(CONFIG_AHCI) += ahci-uclass.o
obj-$(CONFIG_DM_SCSI) += scsi-uclass.o
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 6af7f79..bc16c78 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -5,14 +5,16 @@
# SPDX-License-Identifier: GPL-2.0+
#
-ifdef CONFIG_DM_MMC
-obj-$(CONFIG_GENERIC_MMC) += mmc-uclass.o
-endif
+obj-$(CONFIG_$(SPL_)DM_MMC) += mmc-uclass.o
ifndef CONFIG_BLK
obj-$(CONFIG_GENERIC_MMC) += mmc_legacy.o
endif
+ifdef SPL_
+obj-$(CONFIG_GENERIC_MMC) += mmc_legacy.o
+endif
+
obj-$(CONFIG_ARM_PL180_MMCI) += arm_pl180_mmci.o
obj-$(CONFIG_ATMEL_SDHCI) += atmel_sdhci.o
obj-$(CONFIG_BFIN_SDH) += bfin_sdh.o
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index b326846..fa5d72b 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -53,9 +53,16 @@ DECLARE_GLOBAL_DATA_PTR;
#define SYSCTL_SRC (1 << 25)
#define SYSCTL_SRD (1 << 26)
+struct omap_hsmmc_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+};
+
struct omap_hsmmc_data {
struct hsmmc *base_addr;
+#ifndef CONFIG_DM_MMC
struct mmc_config cfg;
+#endif
#ifdef OMAP_HSMMC_USE_GPIO
#ifdef CONFIG_DM_MMC
struct gpio_desc cd_gpio; /* Change Detect GPIO */
@@ -137,7 +144,7 @@ static unsigned char mmc_board_init(struct mmc *mmc)
#if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)
/* PBIAS config needed for MMC1 only */
- if (mmc->block_dev.devnum == 0)
+ if (mmc_get_blk_desc(mmc)->devnum == 0)
vmmc_pbias_config(LDO_VOLT_3V0);
#endif
@@ -171,15 +178,24 @@ void mmc_init_stream(struct hsmmc *mmc_base)
}
writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
}
+struct omap_hsmmc_data *omap_hsmmc_get_data(struct mmc *mmc)
+{
+#ifdef CONFIG_DM_MMC
+ return dev_get_priv(mmc->dev);
+#else
+ return (struct omap_hsmmc_data *)mmc->priv;
+#endif
+}
static int omap_hsmmc_init_setup(struct mmc *mmc)
{
+ struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
struct hsmmc *mmc_base;
unsigned int reg_val;
unsigned int dsor;
ulong start;
- mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
+ mmc_base = priv->base_addr;
mmc_board_init(mmc);
writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
@@ -284,11 +300,12 @@ static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
static int omap_hsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
{
+ struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
struct hsmmc *mmc_base;
unsigned int flags, mmc_stat;
ulong start;
- mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
+ mmc_base = priv->base_addr;
start = get_timer(0);
while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
if (get_timer(0) - start > MAX_RETRY_MS) {
@@ -513,11 +530,12 @@ static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
static int omap_hsmmc_set_ios(struct mmc *mmc)
{
+ struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
struct hsmmc *mmc_base;
unsigned int dsor = 0;
ulong start;
- mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
+ mmc_base = priv->base_addr;
/* configue bus width */
switch (mmc->bus_width) {
case 8:
@@ -571,7 +589,7 @@ static int omap_hsmmc_set_ios(struct mmc *mmc)
#ifdef CONFIG_DM_MMC
static int omap_hsmmc_getcd(struct mmc *mmc)
{
- struct omap_hsmmc_data *priv = mmc->priv;
+ struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
int value;
value = dm_gpio_get_value(&priv->cd_gpio);
@@ -586,7 +604,7 @@ static int omap_hsmmc_getcd(struct mmc *mmc)
static int omap_hsmmc_getwp(struct mmc *mmc)
{
- struct omap_hsmmc_data *priv = mmc->priv;
+ struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
int value;
value = dm_gpio_get_value(&priv->wp_gpio);
@@ -727,6 +745,7 @@ int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
static int omap_hsmmc_ofdata_to_platdata(struct udevice *dev)
{
struct omap_hsmmc_data *priv = dev_get_priv(dev);
+ struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
const void *fdt = gd->fdt_blob;
int node = dev->of_offset;
struct mmc_config *cfg;
@@ -734,7 +753,7 @@ static int omap_hsmmc_ofdata_to_platdata(struct udevice *dev)
priv->base_addr = map_physmem(dev_get_addr(dev), sizeof(struct hsmmc *),
MAP_NOCACHE);
- cfg = &priv->cfg;
+ cfg = &plat->cfg;
cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS;
val = fdtdec_get_int(fdt, node, "bus-width", -1);
@@ -766,29 +785,33 @@ static int omap_hsmmc_ofdata_to_platdata(struct udevice *dev)
return 0;
}
+static int omap_hsmmc_bind(struct udevice *dev)
+{
+ struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
+
+ return mmc_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+
static int omap_hsmmc_probe(struct udevice *dev)
{
+ struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct omap_hsmmc_data *priv = dev_get_priv(dev);
struct mmc_config *cfg;
- struct mmc *mmc;
- cfg = &priv->cfg;
+ cfg = &plat->cfg;
cfg->name = "OMAP SD/MMC";
cfg->ops = &omap_hsmmc_ops;
- mmc = mmc_create(cfg, priv);
- if (mmc == NULL)
- return -1;
-
#ifdef OMAP_HSMMC_USE_GPIO
gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, GPIOD_IS_IN);
gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio, GPIOD_IS_IN);
#endif
- mmc->dev = dev;
- upriv->mmc = mmc;
+ upriv->mmc = &plat->mmc;
+ printf("%s", plat->mmc.dev->name);
return 0;
}
@@ -804,7 +827,9 @@ U_BOOT_DRIVER(omap_hsmmc) = {
.id = UCLASS_MMC,
.of_match = omap_hsmmc_ids,
.ofdata_to_platdata = omap_hsmmc_ofdata_to_platdata,
+ .bind = omap_hsmmc_bind,
.probe = omap_hsmmc_probe,
.priv_auto_alloc_size = sizeof(struct omap_hsmmc_data),
+ .platdata_auto_alloc_size = sizeof(struct omap_hsmmc_plat),
};
#endif
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 7390015..6368fb8 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -285,6 +285,7 @@
*/
#ifdef CONFIG_SPL_BUILD
#undef CONFIG_DM_MMC
+#undef CONFIG_BLK
#undef CONFIG_TIMER
#undef CONFIG_DM_USB
#undef CONFIG_DM_NAND
--
2.10.1.dirty
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