X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmmc%2Ftegra_mmc.c;h=c9d9432e5e87edc2149a264ef3b9df092032e179;hb=19e99fb4ff73f648f2b316d0ddd8ee3c01496bd4;hp=455a690b7ee0b594b54907d463a9c644a72fa89b;hpb=c9aa831ee26f629fbd2df67cab8bb357777e2256;p=u-boot diff --git a/drivers/mmc/tegra_mmc.c b/drivers/mmc/tegra_mmc.c index 455a690b7e..c9d9432e5e 100644 --- a/drivers/mmc/tegra_mmc.c +++ b/drivers/mmc/tegra_mmc.c @@ -2,42 +2,63 @@ * (C) Copyright 2009 SAMSUNG Electronics * Minkyu Kang * Jaehoon Chung - * Portions Copyright 2011-2013 NVIDIA Corporation + * Portions Copyright 2011-2015 NVIDIA Corporation * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include #include -#include #include #include +#ifndef CONFIG_TEGRA186 #include #include +#endif +#include #include #include DECLARE_GLOBAL_DATA_PTR; -struct mmc mmc_dev[MAX_HOSTS]; -struct mmc_host mmc_host[MAX_HOSTS]; +struct mmc_host mmc_host[CONFIG_SYS_MMC_MAX_DEVICE]; -#ifndef CONFIG_OF_CONTROL +#if !CONFIG_IS_ENABLED(OF_CONTROL) #error "Please enable device tree support to use this driver" #endif +static void mmc_set_power(struct mmc_host *host, unsigned short power) +{ + u8 pwr = 0; + debug("%s: power = %x\n", __func__, power); + + if (power != (unsigned short)-1) { + switch (1 << power) { + case MMC_VDD_165_195: + pwr = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V1_8; + break; + case MMC_VDD_29_30: + case MMC_VDD_30_31: + pwr = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V3_0; + break; + case MMC_VDD_32_33: + case MMC_VDD_33_34: + pwr = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V3_3; + break; + } + } + debug("%s: pwr = %X\n", __func__, pwr); + + /* Set the bus voltage first (if any) */ + writeb(pwr, &host->reg->pwrcon); + if (pwr == 0) + return; + + /* Now enable bus power */ + pwr |= TEGRA_MMC_PWRCTL_SD_BUS_POWER; + writeb(pwr, &host->reg->pwrcon); +} + static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data, struct bounce_buffer *bbstate) { @@ -48,7 +69,7 @@ static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data, bbstate->bounce_buffer, bbstate->user_buffer, data->blocks, data->blocksize); - writel((u32)bbstate->bounce_buffer, &host->reg->sysad); + writel((u32)(unsigned long)bbstate->bounce_buffer, &host->reg->sysad); /* * DMASEL[4:3] * 00 = Selects SDMA @@ -126,7 +147,7 @@ static int mmc_wait_inhibit(struct mmc_host *host, static int mmc_send_cmd_bounced(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data, struct bounce_buffer *bbstate) { - struct mmc_host *host = (struct mmc_host *)mmc->priv; + struct mmc_host *host = mmc->priv; int flags, i; int result; unsigned int mask = 0; @@ -214,8 +235,8 @@ static int mmc_send_cmd_bounced(struct mmc *mmc, struct mmc_cmd *cmd, if (cmd->resp_type & MMC_RSP_136) { /* CRC is stripped so we need to do some shifting. */ for (i = 0; i < 4; i++) { - unsigned int offset = - (unsigned int)(&host->reg->rspreg3 - i); + unsigned long offset = + (unsigned long)(&host->reg->rspreg3 - i); cmd->response[i] = readl(offset) << 8; if (i != 3) { @@ -274,7 +295,7 @@ static int mmc_send_cmd_bounced(struct mmc *mmc, struct mmc_cmd *cmd, /* Transfer Complete */ debug("r/w is done\n"); break; - } else if (get_timer(start) > 2000UL) { + } else if (get_timer(start) > 8000UL) { writel(mask, &host->reg->norintsts); printf("%s: MMC Timeout\n" " Interrupt status 0x%08x\n" @@ -295,7 +316,7 @@ static int mmc_send_cmd_bounced(struct mmc *mmc, struct mmc_cmd *cmd, return 0; } -static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, +static int tegra_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { void *buf; @@ -334,13 +355,16 @@ static void mmc_change_clock(struct mmc_host *host, uint clock) debug(" mmc_change_clock called\n"); /* - * Change Tegra SDMMCx clock divisor here. Source is 216MHz, - * PLLP_OUT0 + * Change Tegra SDMMCx clock divisor here. Source is PLLP_OUT0 */ if (clock == 0) goto out; +#ifndef CONFIG_TEGRA186 clock_adjust_periph_pll_div(host->mmc_id, CLOCK_ID_PERIPH, clock, &div); +#else + div = (20000000 + clock - 1) / clock; +#endif debug("div = %d\n", div); writew(0, &host->reg->clkcon); @@ -378,7 +402,7 @@ out: host->clock = clock; } -static void mmc_set_ios(struct mmc *mmc) +static void tegra_mmc_set_ios(struct mmc *mmc) { struct mmc_host *host = mmc->priv; unsigned char ctrl; @@ -410,7 +434,7 @@ static void mmc_set_ios(struct mmc *mmc) debug("mmc_set_ios: hostctl = %08X\n", ctrl); } -static void mmc_reset(struct mmc_host *host) +static void mmc_reset(struct mmc_host *host, struct mmc *mmc) { unsigned int timeout; debug(" mmc_reset called\n"); @@ -436,15 +460,23 @@ static void mmc_reset(struct mmc_host *host) timeout--; udelay(1000); } + + /* Set SD bus voltage & enable bus power */ + mmc_set_power(host, fls(mmc->cfg->voltages) - 1); + debug("%s: power control = %02X, host control = %02X\n", __func__, + readb(&host->reg->pwrcon), readb(&host->reg->hostctl)); + + /* Make sure SDIO pads are set up */ + pad_init_mmc(host); } -static int mmc_core_init(struct mmc *mmc) +static int tegra_mmc_core_init(struct mmc *mmc) { - struct mmc_host *host = (struct mmc_host *)mmc->priv; + struct mmc_host *host = mmc->priv; unsigned int mask; debug(" mmc_core_init called\n"); - mmc_reset(host); + mmc_reset(host, mmc); host->version = readw(&host->reg->hcver); debug("host version = %x\n", host->version); @@ -483,22 +515,28 @@ static int mmc_core_init(struct mmc *mmc) return 0; } -int tegra_mmc_getcd(struct mmc *mmc) +static int tegra_mmc_getcd(struct mmc *mmc) { - struct mmc_host *host = (struct mmc_host *)mmc->priv; + struct mmc_host *host = mmc->priv; debug("tegra_mmc_getcd called\n"); - if (fdt_gpio_isvalid(&host->cd_gpio)) - return fdtdec_get_gpio(&host->cd_gpio); + if (dm_gpio_is_valid(&host->cd_gpio)) + return dm_gpio_get_value(&host->cd_gpio); return 1; } -static int do_mmc_init(int dev_index) +static const struct mmc_ops tegra_mmc_ops = { + .send_cmd = tegra_mmc_send_cmd, + .set_ios = tegra_mmc_set_ios, + .init = tegra_mmc_core_init, + .getcd = tegra_mmc_getcd, +}; + +static int do_mmc_init(int dev_index, bool removable) { struct mmc_host *host; - char gpusage[12]; /* "SD/MMCn PWR" or "SD/MMCn CD" */ struct mmc *mmc; /* DT should have been read & host config filled in */ @@ -506,45 +544,30 @@ static int do_mmc_init(int dev_index) if (!host->enabled) return -1; - debug(" do_mmc_init: index %d, bus width %d " - "pwr_gpio %d cd_gpio %d\n", - dev_index, host->width, - host->pwr_gpio.gpio, host->cd_gpio.gpio); + debug(" do_mmc_init: index %d, bus width %d pwr_gpio %d cd_gpio %d\n", + dev_index, host->width, gpio_get_number(&host->pwr_gpio), + gpio_get_number(&host->cd_gpio)); host->clock = 0; +#ifndef CONFIG_TEGRA186 clock_start_periph_pll(host->mmc_id, CLOCK_ID_PERIPH, 20000000); +#endif - if (fdt_gpio_isvalid(&host->pwr_gpio)) { - sprintf(gpusage, "SD/MMC%d PWR", dev_index); - gpio_request(host->pwr_gpio.gpio, gpusage); - gpio_direction_output(host->pwr_gpio.gpio, 1); - debug(" Power GPIO name = %s\n", host->pwr_gpio.name); - } - - if (fdt_gpio_isvalid(&host->cd_gpio)) { - sprintf(gpusage, "SD/MMC%d CD", dev_index); - gpio_request(host->cd_gpio.gpio, gpusage); - gpio_direction_input(host->cd_gpio.gpio); - debug(" CD GPIO name = %s\n", host->cd_gpio.name); - } + if (dm_gpio_is_valid(&host->pwr_gpio)) + dm_gpio_set_value(&host->pwr_gpio, 1); - mmc = &mmc_dev[dev_index]; + memset(&host->cfg, 0, sizeof(host->cfg)); - sprintf(mmc->name, "Tegra SD/MMC"); - mmc->priv = host; - mmc->send_cmd = mmc_send_cmd; - mmc->set_ios = mmc_set_ios; - mmc->init = mmc_core_init; - mmc->getcd = tegra_mmc_getcd; - mmc->getwp = NULL; + host->cfg.name = "Tegra SD/MMC"; + host->cfg.ops = &tegra_mmc_ops; - mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; - mmc->host_caps = 0; + host->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; + host->cfg.host_caps = 0; if (host->width == 8) - mmc->host_caps |= MMC_MODE_8BIT; + host->cfg.host_caps |= MMC_MODE_8BIT; if (host->width >= 4) - mmc->host_caps |= MMC_MODE_4BIT; - mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC; + host->cfg.host_caps |= MMC_MODE_4BIT; + host->cfg.host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; /* * min freq is for card identification, and is the highest @@ -552,10 +575,19 @@ static int do_mmc_init(int dev_index) * max freq is highest HS eMMC clock as per the SD/MMC spec * (actually 52MHz) */ - mmc->f_min = 375000; - mmc->f_max = 48000000; + host->cfg.f_min = 375000; +#ifndef CONFIG_TEGRA186 + host->cfg.f_max = 48000000; +#else + host->cfg.f_max = 375000; +#endif - mmc_register(mmc); + host->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; + + mmc = mmc_create(&host->cfg, host); + mmc->block_dev.removable = removable; + if (mmc == NULL) + return -1; return 0; } @@ -567,7 +599,8 @@ static int do_mmc_init(int dev_index) * @param node Device index (0-3) * @param host Structure to fill in (reg, width, mmc_id) */ -static int mmc_get_config(const void *blob, int node, struct mmc_host *host) +static int mmc_get_config(const void *blob, int node, struct mmc_host *host, + bool *removablep) { debug("%s: node = %d\n", __func__, node); @@ -579,11 +612,13 @@ static int mmc_get_config(const void *blob, int node, struct mmc_host *host) return -FDT_ERR_NOTFOUND; } +#ifndef CONFIG_TEGRA186 host->mmc_id = clock_decode_periph_id(blob, node); if (host->mmc_id == PERIPH_ID_NONE) { debug("%s: could not decode periph id\n", __func__); return -FDT_ERR_NOTFOUND; } +#endif /* * NOTE: mmc->bus_width is determined by mmc.c dynamically. @@ -594,12 +629,22 @@ static int mmc_get_config(const void *blob, int node, struct mmc_host *host) debug("%s: no sdmmc width found\n", __func__); /* These GPIOs are optional */ - fdtdec_decode_gpio(blob, node, "cd-gpios", &host->cd_gpio); - fdtdec_decode_gpio(blob, node, "wp-gpios", &host->wp_gpio); - fdtdec_decode_gpio(blob, node, "power-gpios", &host->pwr_gpio); + gpio_request_by_name_nodev(blob, node, "cd-gpios", 0, &host->cd_gpio, + GPIOD_IS_IN); + gpio_request_by_name_nodev(blob, node, "wp-gpios", 0, &host->wp_gpio, + GPIOD_IS_IN); + gpio_request_by_name_nodev(blob, node, "power-gpios", 0, + &host->pwr_gpio, GPIOD_IS_OUT); + *removablep = !fdtdec_get_bool(blob, node, "non-removable"); debug("%s: found controller at %p, width = %d, periph_id = %d\n", - __func__, host->reg, host->width, host->mmc_id); + __func__, host->reg, host->width, +#ifndef CONFIG_TEGRA186 + host->mmc_id +#else + -1 +#endif + ); return 0; } @@ -614,6 +659,7 @@ static int mmc_get_config(const void *blob, int node, struct mmc_host *host) static int process_nodes(const void *blob, int node_list[], int count) { struct mmc_host *host; + bool removable; int i, node; debug("%s: count = %d\n", __func__, count); @@ -627,27 +673,68 @@ static int process_nodes(const void *blob, int node_list[], int count) host = &mmc_host[i]; host->id = i; - if (mmc_get_config(blob, node, host)) { + if (mmc_get_config(blob, node, host, &removable)) { printf("%s: failed to decode dev %d\n", __func__, i); return -1; } - do_mmc_init(i); + do_mmc_init(i, removable); } return 0; } void tegra_mmc_init(void) { - int node_list[MAX_HOSTS], count; + int node_list[CONFIG_SYS_MMC_MAX_DEVICE], count; const void *blob = gd->fdt_blob; debug("%s entry\n", __func__); + /* See if any Tegra186 MMC controllers are present */ count = fdtdec_find_aliases_for_id(blob, "sdhci", - COMPAT_NVIDIA_TEGRA20_SDMMC, node_list, MAX_HOSTS); - debug("%s: count of sdhci nodes is %d\n", __func__, count); + COMPAT_NVIDIA_TEGRA186_SDMMC, node_list, + CONFIG_SYS_MMC_MAX_DEVICE); + debug("%s: count of Tegra186 sdhci nodes is %d\n", __func__, count); + if (process_nodes(blob, node_list, count)) { + printf("%s: Error processing T186 mmc node(s)!\n", __func__); + return; + } + /* See if any Tegra210 MMC controllers are present */ + count = fdtdec_find_aliases_for_id(blob, "sdhci", + COMPAT_NVIDIA_TEGRA210_SDMMC, node_list, + CONFIG_SYS_MMC_MAX_DEVICE); + debug("%s: count of Tegra210 sdhci nodes is %d\n", __func__, count); + if (process_nodes(blob, node_list, count)) { + printf("%s: Error processing T210 mmc node(s)!\n", __func__); + return; + } + + /* See if any Tegra124 MMC controllers are present */ + count = fdtdec_find_aliases_for_id(blob, "sdhci", + COMPAT_NVIDIA_TEGRA124_SDMMC, node_list, + CONFIG_SYS_MMC_MAX_DEVICE); + debug("%s: count of Tegra124 sdhci nodes is %d\n", __func__, count); + if (process_nodes(blob, node_list, count)) { + printf("%s: Error processing T124 mmc node(s)!\n", __func__); + return; + } + + /* See if any Tegra30 MMC controllers are present */ + count = fdtdec_find_aliases_for_id(blob, "sdhci", + COMPAT_NVIDIA_TEGRA30_SDMMC, node_list, + CONFIG_SYS_MMC_MAX_DEVICE); + debug("%s: count of T30 sdhci nodes is %d\n", __func__, count); + if (process_nodes(blob, node_list, count)) { + printf("%s: Error processing T30 mmc node(s)!\n", __func__); + return; + } + + /* Now look for any Tegra20 MMC controllers */ + count = fdtdec_find_aliases_for_id(blob, "sdhci", + COMPAT_NVIDIA_TEGRA20_SDMMC, node_list, + CONFIG_SYS_MMC_MAX_DEVICE); + debug("%s: count of T20 sdhci nodes is %d\n", __func__, count); if (process_nodes(blob, node_list, count)) { - printf("%s: Error processing mmc node(s)!\n", __func__); + printf("%s: Error processing T20 mmc node(s)!\n", __func__); return; } }