diff options
author | Simon Glass <sjg@chromium.org> | 2017-04-05 16:23:38 -0600 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2017-05-09 20:20:37 -0400 |
commit | e6c6d07e2cf049f78b7cff6fc08e80b39a8e89a0 (patch) | |
tree | f539de16062b3c7e90fd28b441408159487b328e /drivers/mmc/bcm2835_sdhci.c | |
parent | c6606515f1aedd716f5cffa454de12601bc2c372 (diff) |
dm: mmc: rpi: Convert Raspberry Pi to driver model for MMC
Convert the bcm2835 SDHCI driver over to support CONFIG_DM_MMC and move
all boards over. There is no need to keep the old code since there are no
other users.
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/mmc/bcm2835_sdhci.c')
-rw-r--r-- | drivers/mmc/bcm2835_sdhci.c | 81 |
1 files changed, 65 insertions, 16 deletions
diff --git a/drivers/mmc/bcm2835_sdhci.c b/drivers/mmc/bcm2835_sdhci.c index 20079bce48..b6e2fc6897 100644 --- a/drivers/mmc/bcm2835_sdhci.c +++ b/drivers/mmc/bcm2835_sdhci.c @@ -37,15 +37,24 @@ */ #include <common.h> +#include <dm.h> #include <malloc.h> +#include <memalign.h> #include <sdhci.h> -#include <mach/timer.h> +#include <asm/arch/msg.h> +#include <asm/arch/mbox.h> #include <mach/sdhci.h> +#include <mach/timer.h> /* 400KHz is max freq for card ID etc. Use that as min */ #define MIN_FREQ 400000 #define SDHCI_BUFFER 0x20 +struct bcm2835_sdhci_plat { + struct mmc_config cfg; + struct mmc mmc; +}; + struct bcm2835_sdhci_host { struct sdhci_host host; uint twoticks_delay; @@ -58,7 +67,7 @@ static inline struct bcm2835_sdhci_host *to_bcm(struct sdhci_host *host) } static inline void bcm2835_sdhci_raw_writel(struct sdhci_host *host, u32 val, - int reg) + int reg) { struct bcm2835_sdhci_host *bcm_host = to_bcm(host); @@ -153,16 +162,33 @@ static const struct sdhci_ops bcm2835_ops = { .read_b = bcm2835_sdhci_readb, }; -int bcm2835_sdhci_init(u32 regbase, u32 emmc_freq) +static int bcm2835_sdhci_bind(struct udevice *dev) { - struct bcm2835_sdhci_host *bcm_host; - struct sdhci_host *host; + struct bcm2835_sdhci_plat *plat = dev_get_platdata(dev); - bcm_host = calloc(1, sizeof(*bcm_host)); - if (!bcm_host) { - printf("sdhci_host calloc fail!\n"); - return -ENOMEM; + return sdhci_bind(dev, &plat->mmc, &plat->cfg); +} + +static int bcm2835_sdhci_probe(struct udevice *dev) +{ + struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); + struct bcm2835_sdhci_plat *plat = dev_get_platdata(dev); + struct bcm2835_sdhci_host *priv = dev_get_priv(dev); + struct sdhci_host *host = &priv->host; + fdt_addr_t base; + int emmc_freq; + int ret; + + base = dev_get_addr(dev); + if (base == FDT_ADDR_T_NONE) + return -EINVAL; + + ret = bcm2835_get_mmc_clock(); + if (ret < 0) { + debug("%s: Failed to set MMC clock (err=%d)\n", __func__, ret); + return ret; } + emmc_freq = ret; /* * See the comments in bcm2835_sdhci_raw_writel(). @@ -177,19 +203,42 @@ int bcm2835_sdhci_init(u32 regbase, u32 emmc_freq) * Multiply by 1000000 to get uS per two ticks. * +1 for hack rounding. */ - bcm_host->twoticks_delay = ((2 * 1000000) / MIN_FREQ) + 1; - bcm_host->last_write = 0; + priv->twoticks_delay = ((2 * 1000000) / MIN_FREQ) + 1; + priv->last_write = 0; - host = &bcm_host->host; - host->name = "bcm2835_sdhci"; - host->ioaddr = (void *)(unsigned long)regbase; + host->name = dev->name; + host->ioaddr = (void *)base; host->quirks = SDHCI_QUIRK_BROKEN_VOLTAGE | SDHCI_QUIRK_BROKEN_R1B | SDHCI_QUIRK_WAIT_SEND_CMD | SDHCI_QUIRK_NO_HISPD_BIT; host->max_clk = emmc_freq; host->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; host->ops = &bcm2835_ops; - add_sdhci(host, 0, MIN_FREQ); + ret = sdhci_setup_cfg(&plat->cfg, host, emmc_freq, MIN_FREQ); + if (ret) { + debug("%s: Failed to setup SDHCI (err=%d)\n", __func__, ret); + return ret; + } + + upriv->mmc = &plat->mmc; + host->mmc = &plat->mmc; + host->mmc->priv = host; - return 0; + return sdhci_probe(dev); } + +static const struct udevice_id bcm2835_sdhci_match[] = { + { .compatible = "brcm,bcm2835-sdhci" }, + { /* sentinel */ } +}; + +U_BOOT_DRIVER(sdhci_cdns) = { + .name = "sdhci-bcm2835", + .id = UCLASS_MMC, + .of_match = bcm2835_sdhci_match, + .bind = bcm2835_sdhci_bind, + .probe = bcm2835_sdhci_probe, + .priv_auto_alloc_size = sizeof(struct bcm2835_sdhci_host), + .platdata_auto_alloc_size = sizeof(struct bcm2835_sdhci_plat), + .ops = &sdhci_ops, +}; |