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mmc: arm_pl180_mmci: Rely on DM

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The PL180/MMCI driver is implied to use CONFIG_DM and the ARM
defconfigs such as configs/vexpress_ca9x4_defconfig will get it
as well.

With a simple oneline to default to not being the v2 variant,
the original ARM MMCI variant works fine with the driver as well.
The IP version actually needs to be read out from a register on
the ARM versions, but we will simply assume we are running on the
original hardware if arm,primecell-periphid is not explicitly
specified in the device tree.

Drop the !CONFIG_DM code and depend on DM_MMC.

Tested on the Versatile Express CA9x4 board.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2024-02-08 10:33:43 +01:00 committed by Jaehoon Chung
parent d06e48990d
commit ee6cee125a
2 changed files with 3 additions and 64 deletions
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1
drivers/mmc/Kconfig
View File

@ -87,6 +87,7 @@ config MMC_SPI_CRC_ON
config ARM_PL180_MMCI
bool "ARM AMBA Multimedia Card Interface and compatible support"
depends on DM_MMC
help
This selects the ARM(R) AMBA(R) PrimeCell Multimedia Card
Interface (PL180, PL181 and compatible) support.

66
drivers/mmc/arm_pl180_mmci.c
View File

@ -18,6 +18,7 @@
#include <malloc.h>
#include <mmc.h>
#include <dm/device_compat.h>
#include <dm.h>
#include <asm/io.h>
#include <asm-generic/gpio.h>
@ -25,8 +26,6 @@
#include "arm_pl180_mmci.h"
#include <linux/delay.h>
#ifdef CONFIG_DM_MMC
#include <dm.h>
#define MMC_CLOCK_MAX 48000000
#define MMC_CLOCK_MIN 400000
@ -34,7 +33,6 @@ struct arm_pl180_mmc_plat {
struct mmc_config cfg;
struct mmc mmc;
};
#endif
static int wait_for_command_end(struct mmc *dev, struct mmc_cmd *cmd)
{
@ -358,65 +356,6 @@ static int host_set_ios(struct mmc *dev)
return 0;
}
#ifndef CONFIG_DM_MMC
/* MMC uses open drain drivers in the enumeration phase */
static int mmc_host_reset(struct mmc *dev)
{
struct pl180_mmc_host *host = dev->priv;
writel(host->pwr_init, &host->base->power);
return 0;
}
static const struct mmc_ops arm_pl180_mmci_ops = {
.send_cmd = host_request,
.set_ios = host_set_ios,
.init = mmc_host_reset,
};
/*
* mmc_host_init - initialize the mmc controller.
* Set initial clock and power for mmc slot.
* Initialize mmc struct and register with mmc framework.
*/
int arm_pl180_mmci_init(struct pl180_mmc_host *host, struct mmc **mmc)
{
u32 sdi_u32;
writel(host->pwr_init, &host->base->power);
writel(host->clkdiv_init, &host->base->clock);
udelay(CLK_CHANGE_DELAY);
/* Disable mmc interrupts */
sdi_u32 = readl(&host->base->mask0) & ~SDI_MASK0_MASK;
writel(sdi_u32, &host->base->mask0);
host->cfg.name = host->name;
host->cfg.ops = &arm_pl180_mmci_ops;
/* TODO remove the duplicates */
host->cfg.host_caps = host->caps;
host->cfg.voltages = host->voltages;
host->cfg.f_min = host->clock_min;
host->cfg.f_max = host->clock_max;
if (host->b_max != 0)
host->cfg.b_max = host->b_max;
else
host->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
*mmc = mmc_create(&host->cfg, host);
if (!*mmc)
return -1;
debug("registered mmc interface number is:%d\n",
(*mmc)->block_dev.devnum);
return 0;
}
#endif
#ifdef CONFIG_DM_MMC
static void arm_pl180_mmc_init(struct pl180_mmc_host *host)
{
u32 sdi_u32;
@ -477,7 +416,7 @@ static int arm_pl180_mmc_probe(struct udevice *dev)
host->version2 = true;
break;
default:
host->version2 = true;
host->version2 = false; /* ARM variant */
}
gpio_request_by_name(dev, "cd-gpios", 0, &host->cd_gpio, GPIOD_IS_IN);
@ -561,4 +500,3 @@ U_BOOT_DRIVER(arm_pl180_mmc) = {
.priv_auto = sizeof(struct pl180_mmc_host),
.plat_auto = sizeof(struct arm_pl180_mmc_plat),
};
#endif