From 93bfd6167713a5cc1a78bcf60fa63f990fd3f4b3 Mon Sep 17 00:00:00 2001 From: Pantelis Antoniou Date: Tue, 11 Mar 2014 19:34:20 +0200 Subject: mmc: Split mmc struct, rework mmc initialization (v2) The way that struct mmc was implemented was a bit of a mess; configuration and internal state all jumbled up in a single structure. On top of that the way initialization is done with mmc_register leads to a lot of duplicated code in drivers. Typically the initialization got something like this in every driver. struct mmc *mmc = malloc(sizeof(struct mmc)); memset(mmc, 0, sizeof(struct mmc); /* fill in fields of mmc struct */ /* store private data pointer */ mmc_register(mmc); By using the new mmc_create call one just passes an mmc config struct and an optional private data pointer like this: struct mmc = mmc_create(&cfg, priv); All in tree drivers have been updated to the new form, and expect mmc_register to go away before long. Changes since v1: * Use calloc instead of manually calling memset. * Mark mmc_register as deprecated. Signed-off-by: Pantelis Antoniou --- drivers/mmc/omap_hsmmc.c | 55 ++++++++++++++++++++++++++++-------------------- 1 file changed, 32 insertions(+), 23 deletions(-) (limited to 'drivers/mmc/omap_hsmmc.c') diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c index fecac5698b..17cbb0983d 100644 --- a/drivers/mmc/omap_hsmmc.c +++ b/drivers/mmc/omap_hsmmc.c @@ -24,6 +24,7 @@ #include #include +#include #include #include #include @@ -49,6 +50,7 @@ struct omap_hsmmc_data { struct hsmmc *base_addr; + struct mmc_config cfg; #ifdef OMAP_HSMMC_USE_GPIO int cd_gpio; int wp_gpio; @@ -61,8 +63,6 @@ struct omap_hsmmc_data { static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size); static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, unsigned int siz); -static struct mmc hsmmc_dev[3]; -static struct omap_hsmmc_data hsmmc_dev_data[3]; #ifdef OMAP_HSMMC_USE_GPIO static int omap_mmc_setup_gpio_in(int gpio, const char *label) @@ -147,7 +147,7 @@ unsigned char mmc_board_init(struct mmc *mmc) &t2_base->devconf1); /* Change from default of 52MHz to 26MHz if necessary */ - if (!(mmc->host_caps & MMC_MODE_HS_52MHz)) + if (!(mmc->cfg->host_caps & MMC_MODE_HS_52MHz)) writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL, &t2_base->ctl_prog_io1); @@ -636,14 +636,17 @@ static const struct mmc_ops omap_hsmmc_ops = { int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio, int wp_gpio) { - struct mmc *mmc = &hsmmc_dev[dev_index]; - struct omap_hsmmc_data *priv_data = &hsmmc_dev_data[dev_index]; - uint host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS | - MMC_MODE_HC; + struct mmc *mmc; + struct omap_hsmmc_data *priv_data; + struct mmc_config *cfg; + uint host_caps_val; + + priv_data = malloc(sizeof(*priv_data)); + if (priv_data == NULL) + return -1; - mmc->name = "OMAP SD/MMC"; - mmc->ops = &omap_hsmmc_ops; - mmc->priv = priv_data; + host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS | + MMC_MODE_HC; switch (dev_index) { case 0: @@ -678,34 +681,40 @@ int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio, priv_data->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp"); #endif - mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; - mmc->host_caps = host_caps_val & ~host_caps_mask; + cfg = &priv_data->cfg; - mmc->f_min = 400000; + cfg->name = "OMAP SD/MMC"; + cfg->ops = &omap_hsmmc_ops; + + cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; + cfg->host_caps = host_caps_val & ~host_caps_mask; + + cfg->f_min = 400000; if (f_max != 0) - mmc->f_max = f_max; + cfg->f_max = f_max; else { - if (mmc->host_caps & MMC_MODE_HS) { - if (mmc->host_caps & MMC_MODE_HS_52MHz) - mmc->f_max = 52000000; + if (cfg->host_caps & MMC_MODE_HS) { + if (cfg->host_caps & MMC_MODE_HS_52MHz) + cfg->f_max = 52000000; else - mmc->f_max = 26000000; + cfg->f_max = 26000000; } else - mmc->f_max = 20000000; + cfg->f_max = 20000000; } - mmc->b_max = 0; + cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; #if defined(CONFIG_OMAP34XX) /* * Silicon revs 2.1 and older do not support multiblock transfers. */ if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21)) - mmc->b_max = 1; + cfg->b_max = 1; #endif - - mmc_register(mmc); + mmc = mmc_create(cfg, priv_data); + if (mmc == NULL) + return -1; return 0; } -- cgit v1.2.1