diff options
Diffstat (limited to 'drivers/mmc/gen_atmel_mci.c')
| -rw-r--r-- | drivers/mmc/gen_atmel_mci.c | 60 |
1 files changed, 36 insertions, 24 deletions
diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c index 45bcffb..da870c6 100644 --- a/drivers/mmc/gen_atmel_mci.c +++ b/drivers/mmc/gen_atmel_mci.c @@ -32,7 +32,11 @@ # define MCI_BUS 0 #endif -static int initialized = 0; +struct atmel_mci_priv { + struct mmc_config cfg; + struct atmel_mci *mci; + unsigned int initialized:1; +}; /* Read Atmel MCI IP version */ static unsigned int atmel_mci_get_version(struct atmel_mci *mci) @@ -48,14 +52,15 @@ static unsigned int atmel_mci_get_version(struct atmel_mci *mci) */ static void dump_cmd(u32 cmdr, u32 arg, u32 status, const char* msg) { - printf("gen_atmel_mci: CMDR %08x (%2u) ARGR %08x (SR: %08x) %s\n", - cmdr, cmdr&0x3F, arg, status, msg); + debug("gen_atmel_mci: CMDR %08x (%2u) ARGR %08x (SR: %08x) %s\n", + cmdr, cmdr & 0x3F, arg, status, msg); } /* Setup for MCI Clock and Block Size */ static void mci_set_mode(struct mmc *mmc, u32 hz, u32 blklen) { - atmel_mci_t *mci = mmc->priv; + struct atmel_mci_priv *priv = mmc->priv; + atmel_mci_t *mci = priv->mci; u32 bus_hz = get_mci_clk_rate(); u32 clkdiv = 255; unsigned int version = atmel_mci_get_version(mci); @@ -73,16 +78,16 @@ static void mci_set_mode(struct mmc *mmc, u32 hz, u32 blklen) clkodd = clkdiv & 1; clkdiv >>= 1; - printf("mci: setting clock %u Hz, block size %u\n", - bus_hz / (clkdiv * 2 + clkodd + 2), blklen); + debug("mci: setting clock %u Hz, block size %u\n", + bus_hz / (clkdiv * 2 + clkodd + 2), blklen); } else { /* find clkdiv yielding a rate <= than requested */ for (clkdiv = 0; clkdiv < 255; clkdiv++) { if ((bus_hz / (clkdiv + 1) / 2) <= hz) break; } - printf("mci: setting clock %u Hz, block size %u\n", - (bus_hz / (clkdiv + 1)) / 2, blklen); + debug("mci: setting clock %u Hz, block size %u\n", + (bus_hz / (clkdiv + 1)) / 2, blklen); } } @@ -113,7 +118,9 @@ static void mci_set_mode(struct mmc *mmc, u32 hz, u32 blklen) if (mmc->card_caps & mmc->cfg->host_caps & MMC_MODE_HS) writel(MMCI_BIT(HSMODE), &mci->cfg); - initialized = 1; + udelay(50); + + priv->initialized = 1; } /* Return the CMDR with flags for a given command and data packet */ @@ -196,12 +203,13 @@ io_fail: static int mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { - atmel_mci_t *mci = mmc->priv; + struct atmel_mci_priv *priv = mmc->priv; + atmel_mci_t *mci = priv->mci; u32 cmdr; u32 error_flags = 0; u32 status; - if (!initialized) { + if (!priv->initialized) { puts ("MCI not initialized!\n"); return COMM_ERR; } @@ -321,7 +329,8 @@ mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) /* Entered into mmc structure during driver init */ static void mci_set_ios(struct mmc *mmc) { - atmel_mci_t *mci = mmc->priv; + struct atmel_mci_priv *priv = mmc->priv; + atmel_mci_t *mci = priv->mci; int bus_width = mmc->bus_width; unsigned int version = atmel_mci_get_version(mci); int busw; @@ -357,7 +366,8 @@ static void mci_set_ios(struct mmc *mmc) /* Entered into mmc structure during driver init */ static int mci_init(struct mmc *mmc) { - atmel_mci_t *mci = mmc->priv; + struct atmel_mci_priv *priv = mmc->priv; + atmel_mci_t *mci = priv->mci; /* Initialize controller */ writel(MMCI_BIT(SWRST), &mci->cr); /* soft reset */ @@ -391,22 +401,24 @@ int atmel_mci_init(void *regs) { struct mmc *mmc; struct mmc_config *cfg; - struct atmel_mci *mci; + struct atmel_mci_priv *priv; unsigned int version; - cfg = malloc(sizeof(*cfg)); - if (cfg == NULL) - return -1; - memset(cfg, 0, sizeof(*cfg)); + priv = calloc(1, sizeof(*priv)); + if (!priv) + return -ENOMEM; - mci = (struct atmel_mci *)regs; + cfg = &priv->cfg; cfg->name = "mci"; cfg->ops = &atmel_mci_ops; + priv->mci = (struct atmel_mci *)regs; + priv->initialized = 0; + /* need to be able to pass these in on a board by board basis */ cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34; - version = atmel_mci_get_version(mci); + version = atmel_mci_get_version(priv->mci); if ((version & 0xf00) >= 0x300) { cfg->host_caps = MMC_MODE_8BIT; cfg->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz; @@ -423,13 +435,13 @@ int atmel_mci_init(void *regs) cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; - mmc = mmc_create(cfg, regs); + mmc = mmc_create(cfg, priv); if (mmc == NULL) { - free(cfg); - return -1; + free(priv); + return -ENODEV; } - /* NOTE: possibly leaking the cfg structure */ + /* NOTE: possibly leaking the priv structure */ return 0; } |