diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/Kconfig | 15 | ||||
| -rw-r--r-- | drivers/mmc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mmc/bcm2835_sdhci.c | 8 | ||||
| -rw-r--r-- | drivers/mmc/gen_atmel_mci.c | 158 | ||||
| -rw-r--r-- | drivers/mmc/meson_gx_mmc.c | 291 | ||||
| -rw-r--r-- | drivers/mmc/sdhci.c | 15 |
6 files changed, 481 insertions, 7 deletions
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index 560391f..6ac26dd 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -105,6 +105,12 @@ config MMC_DW_SOCFPGA Synopsys DesignWare Memory Card Interface driver. Select this option for platforms based on Altera SOCFPGA. +config MMC_MESON_GX + bool "Meson GX EMMC controller support" + depends on DM_MMC && BLK && DM_MMC_OPS && ARCH_MESON + help + Support for EMMC host controller on Meson GX ARM SoCs platform (S905) + config MMC_MXC bool "Freescale i.MX21/27/31 or MPC512x Multimedia Card support" help @@ -365,6 +371,15 @@ config MMC_SUNXI This selects support for the SD/MMC Host Controller on Allwinner sunxi SoCs. +config GENERIC_ATMEL_MCI + bool "Atmel Multimedia Card Interface support" + depends on DM_MMC && BLK && DM_MMC_OPS && ARCH_AT91 + help + This enables support for Atmel High Speed Multimedia Card Interface + (HSMCI), which supports the MultiMedia Card (MMC) Specification V4.3, + the SD Memory Card Specification V2.0, the SDIO V2.0 specification + and CE-ATA V1.1. + endif config TEGRA124_MMC_DISABLE_EXT_LOOPBACK diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 6a26a52..a61a9e9 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -29,6 +29,7 @@ ifdef CONFIG_SUPPORT_EMMC_BOOT obj-$(CONFIG_GENERIC_MMC) += mmc_boot.o endif obj-$(CONFIG_GENERIC_ATMEL_MCI) += gen_atmel_mci.o +obj-$(CONFIG_MMC_MESON_GX) += meson_gx_mmc.o obj-$(CONFIG_MMC_SPI) += mmc_spi.o obj-$(CONFIG_MVEBU_MMC) += mvebu_mmc.o obj-$(CONFIG_MMC_OMAP_HS) += omap_hsmmc.o diff --git a/drivers/mmc/bcm2835_sdhci.c b/drivers/mmc/bcm2835_sdhci.c index 29c2a85..20079bc 100644 --- a/drivers/mmc/bcm2835_sdhci.c +++ b/drivers/mmc/bcm2835_sdhci.c @@ -44,6 +44,7 @@ /* 400KHz is max freq for card ID etc. Use that as min */ #define MIN_FREQ 400000 +#define SDHCI_BUFFER 0x20 struct bcm2835_sdhci_host { struct sdhci_host host; @@ -69,8 +70,11 @@ static inline void bcm2835_sdhci_raw_writel(struct sdhci_host *host, u32 val, * (Which is just as well - otherwise we'd have to nobble the DMA engine * too) */ - while (timer_get_us() - bcm_host->last_write < bcm_host->twoticks_delay) - ; + if (reg != SDHCI_BUFFER) { + while (timer_get_us() - bcm_host->last_write < + bcm_host->twoticks_delay) + ; + } writel(val, host->ioaddr + reg); bcm_host->last_write = timer_get_us(); diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c index 7dc4a5d..c25d9ed 100644 --- a/drivers/mmc/gen_atmel_mci.c +++ b/drivers/mmc/gen_atmel_mci.c @@ -10,6 +10,7 @@ */ #include <common.h> +#include <clk.h> #include <mmc.h> #include <part.h> #include <malloc.h> @@ -18,8 +19,11 @@ #include <asm/byteorder.h> #include <asm/arch/clk.h> #include <asm/arch/hardware.h> +#include <dm/device.h> #include "atmel_mci.h" +DECLARE_GLOBAL_DATA_PTR; + #ifndef CONFIG_SYS_MMC_CLK_OD # define CONFIG_SYS_MMC_CLK_OD 150000 #endif @@ -37,6 +41,10 @@ struct atmel_mci_priv { struct atmel_mci *mci; unsigned int initialized:1; unsigned int curr_clk; +#ifdef CONFIG_DM_MMC + struct mmc mmc; + ulong bus_clk_rate; +#endif }; /* Read Atmel MCI IP version */ @@ -58,11 +66,19 @@ static void dump_cmd(u32 cmdr, u32 arg, u32 status, const char* msg) } /* Setup for MCI Clock and Block Size */ +#ifdef CONFIG_DM_MMC +static void mci_set_mode(struct atmel_mci_priv *priv, u32 hz, u32 blklen) +{ + struct mmc *mmc = &priv->mmc; + u32 bus_hz = priv->bus_clk_rate; +#else static void mci_set_mode(struct mmc *mmc, u32 hz, u32 blklen) { struct atmel_mci_priv *priv = mmc->priv; - atmel_mci_t *mci = priv->mci; u32 bus_hz = get_mci_clk_rate(); +#endif + + atmel_mci_t *mci = priv->mci; u32 clkdiv = 255; unsigned int version = atmel_mci_get_version(mci); u32 clkodd = 0; @@ -202,10 +218,18 @@ io_fail: * Sends a command out on the bus and deals with the block data. * Takes the mmc pointer, a command pointer, and an optional data pointer. */ +#ifdef CONFIG_DM_MMC +static int atmel_mci_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, + struct mmc_data *data) +{ + struct atmel_mci_priv *priv = dev_get_priv(dev); + struct mmc *mmc = mmc_get_mmc_dev(dev); +#else static int mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { struct atmel_mci_priv *priv = mmc->priv; +#endif atmel_mci_t *mci = priv->mci; u32 cmdr; u32 error_flags = 0; @@ -335,17 +359,28 @@ mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) return 0; } +#ifdef CONFIG_DM_MMC +static int atmel_mci_set_ios(struct udevice *dev) +{ + struct atmel_mci_priv *priv = dev_get_priv(dev); + struct mmc *mmc = mmc_get_mmc_dev(dev); +#else /* Entered into mmc structure during driver init */ static int mci_set_ios(struct mmc *mmc) { struct atmel_mci_priv *priv = mmc->priv; +#endif atmel_mci_t *mci = priv->mci; int bus_width = mmc->bus_width; unsigned int version = atmel_mci_get_version(mci); int busw; /* Set the clock speed */ +#ifdef CONFIG_DM_MMC + mci_set_mode(priv, mmc->clock, MMC_DEFAULT_BLKLEN); +#else mci_set_mode(mmc, mmc->clock, MMC_DEFAULT_BLKLEN); +#endif /* * set the bus width and select slot for this interface @@ -374,10 +409,15 @@ static int mci_set_ios(struct mmc *mmc) return 0; } +#ifdef CONFIG_DM_MMC +static int atmel_mci_hw_init(struct atmel_mci_priv *priv) +{ +#else /* Entered into mmc structure during driver init */ static int mci_init(struct mmc *mmc) { struct atmel_mci_priv *priv = mmc->priv; +#endif atmel_mci_t *mci = priv->mci; /* Initialize controller */ @@ -392,11 +432,16 @@ static int mci_init(struct mmc *mmc) writel(~0UL, &mci->idr); /* Set default clocks and blocklen */ +#ifdef CONFIG_DM_MMC + mci_set_mode(priv, CONFIG_SYS_MMC_CLK_OD, MMC_DEFAULT_BLKLEN); +#else mci_set_mode(mmc, CONFIG_SYS_MMC_CLK_OD, MMC_DEFAULT_BLKLEN); +#endif return 0; } +#ifndef CONFIG_DM_MMC static const struct mmc_ops atmel_mci_ops = { .send_cmd = mci_send_cmd, .set_ios = mci_set_ios, @@ -456,3 +501,114 @@ int atmel_mci_init(void *regs) return 0; } +#endif + +#ifdef CONFIG_DM_MMC +static const struct dm_mmc_ops atmel_mci_mmc_ops = { + .send_cmd = atmel_mci_send_cmd, + .set_ios = atmel_mci_set_ios, +}; + +static void atmel_mci_setup_cfg(struct atmel_mci_priv *priv) +{ + struct mmc_config *cfg; + u32 version; + + cfg = &priv->cfg; + cfg->name = "Atmel mci"; + cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34; + + /* + * If the version is above 3.0, the capabilities of the 8-bit + * bus width and high speed are supported. + */ + version = atmel_mci_get_version(priv->mci); + if ((version & 0xf00) >= 0x300) { + cfg->host_caps = MMC_MODE_8BIT | + MMC_MODE_HS | MMC_MODE_HS_52MHz; + } + + cfg->host_caps |= MMC_MODE_4BIT; + cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; + cfg->f_min = priv->bus_clk_rate / (2 * 256); + cfg->f_max = priv->bus_clk_rate / 2; +} + +static int atmel_mci_enable_clk(struct udevice *dev) +{ + struct atmel_mci_priv *priv = dev_get_priv(dev); + struct clk clk; + ulong clk_rate; + int ret = 0; + + ret = clk_get_by_index(dev, 0, &clk); + if (ret) { + ret = -EINVAL; + goto failed; + } + + ret = clk_enable(&clk); + if (ret) + goto failed; + + clk_rate = clk_get_rate(&clk); + if (!clk_rate) { + ret = -EINVAL; + goto failed; + } + + priv->bus_clk_rate = clk_rate; + +failed: + clk_free(&clk); + + return ret; +} + +static int atmel_mci_probe(struct udevice *dev) +{ + struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); + struct atmel_mci_priv *priv = dev_get_priv(dev); + struct mmc *mmc; + int ret; + + ret = atmel_mci_enable_clk(dev); + if (ret) + return ret; + + priv->mci = (struct atmel_mci *)dev_get_addr_ptr(dev); + + atmel_mci_setup_cfg(priv); + + mmc = &priv->mmc; + mmc->cfg = &priv->cfg; + mmc->dev = dev; + upriv->mmc = mmc; + + atmel_mci_hw_init(priv); + + return 0; +} + +static int atmel_mci_bind(struct udevice *dev) +{ + struct atmel_mci_priv *priv = dev_get_priv(dev); + + return mmc_bind(dev, &priv->mmc, &priv->cfg); +} + +static const struct udevice_id atmel_mci_ids[] = { + { .compatible = "atmel,hsmci" }, + { } +}; + +U_BOOT_DRIVER(atmel_mci) = { + .name = "atmel-mci", + .id = UCLASS_MMC, + .of_match = atmel_mci_ids, + .bind = atmel_mci_bind, + .probe = atmel_mci_probe, + .priv_auto_alloc_size = sizeof(struct atmel_mci_priv), + .ops = &atmel_mci_mmc_ops, +}; +#endif diff --git a/drivers/mmc/meson_gx_mmc.c b/drivers/mmc/meson_gx_mmc.c new file mode 100644 index 0000000..8e28ab7 --- /dev/null +++ b/drivers/mmc/meson_gx_mmc.c @@ -0,0 +1,291 @@ +/* + * (C) Copyright 2016 Carlo Caione <carlo@caione.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <fdtdec.h> +#include <malloc.h> +#include <mmc.h> +#include <asm/io.h> +#include <asm/arch/sd_emmc.h> +#include <dm/device.h> +#include <linux/log2.h> + +static inline void *get_regbase(const struct mmc *mmc) +{ + struct meson_mmc_platdata *pdata = mmc->priv; + + return pdata->regbase; +} + +static inline uint32_t meson_read(struct mmc *mmc, int offset) +{ + return readl(get_regbase(mmc) + offset); +} + +static inline void meson_write(struct mmc *mmc, uint32_t val, int offset) +{ + writel(val, get_regbase(mmc) + offset); +} + +static void meson_mmc_config_clock(struct mmc *mmc) +{ + uint32_t meson_mmc_clk = 0; + unsigned int clk, clk_src, clk_div; + + /* 1GHz / CLK_MAX_DIV = 15,9 MHz */ + if (mmc->clock > 16000000) { + clk = SD_EMMC_CLKSRC_DIV2; + clk_src = CLK_SRC_DIV2; + } else { + clk = SD_EMMC_CLKSRC_24M; + clk_src = CLK_SRC_24M; + } + clk_div = DIV_ROUND_UP(clk, mmc->clock); + + /* 180 phase core clock */ + meson_mmc_clk |= CLK_CO_PHASE_180; + + /* 180 phase tx clock */ + meson_mmc_clk |= CLK_TX_PHASE_000; + + /* clock settings */ + meson_mmc_clk |= clk_src; + meson_mmc_clk |= clk_div; + + meson_write(mmc, meson_mmc_clk, MESON_SD_EMMC_CLOCK); +} + +static int meson_dm_mmc_set_ios(struct udevice *dev) +{ + struct mmc *mmc = mmc_get_mmc_dev(dev); + uint32_t meson_mmc_cfg; + + meson_mmc_config_clock(mmc); + + meson_mmc_cfg = meson_read(mmc, MESON_SD_EMMC_CFG); + + meson_mmc_cfg &= ~CFG_BUS_WIDTH_MASK; + if (mmc->bus_width == 1) + meson_mmc_cfg |= CFG_BUS_WIDTH_1; + else if (mmc->bus_width == 4) + meson_mmc_cfg |= CFG_BUS_WIDTH_4; + else if (mmc->bus_width == 8) + meson_mmc_cfg |= CFG_BUS_WIDTH_8; + else + return -EINVAL; + + /* 512 bytes block length */ + meson_mmc_cfg &= ~CFG_BL_LEN_MASK; + meson_mmc_cfg |= CFG_BL_LEN_512; + + /* Response timeout 256 clk */ + meson_mmc_cfg &= ~CFG_RESP_TIMEOUT_MASK; + meson_mmc_cfg |= CFG_RESP_TIMEOUT_256; + + /* Command-command gap 16 clk */ + meson_mmc_cfg &= ~CFG_RC_CC_MASK; + meson_mmc_cfg |= CFG_RC_CC_16; + + meson_write(mmc, meson_mmc_cfg, MESON_SD_EMMC_CFG); + + return 0; +} + +static void meson_mmc_setup_cmd(struct mmc *mmc, struct mmc_data *data, + struct mmc_cmd *cmd) +{ + uint32_t meson_mmc_cmd = 0, cfg; + + meson_mmc_cmd |= cmd->cmdidx << CMD_CFG_CMD_INDEX_SHIFT; + + if (cmd->resp_type & MMC_RSP_PRESENT) { + if (cmd->resp_type & MMC_RSP_136) + meson_mmc_cmd |= CMD_CFG_RESP_128; + + if (cmd->resp_type & MMC_RSP_BUSY) + meson_mmc_cmd |= CMD_CFG_R1B; + + if (!(cmd->resp_type & MMC_RSP_CRC)) + meson_mmc_cmd |= CMD_CFG_RESP_NOCRC; + } else { + meson_mmc_cmd |= CMD_CFG_NO_RESP; + } + + if (data) { + cfg = meson_read(mmc, MESON_SD_EMMC_CFG); + cfg &= ~CFG_BL_LEN_MASK; + cfg |= ilog2(data->blocksize) << CFG_BL_LEN_SHIFT; + meson_write(mmc, cfg, MESON_SD_EMMC_CFG); + + if (data->flags == MMC_DATA_WRITE) + meson_mmc_cmd |= CMD_CFG_DATA_WR; + + meson_mmc_cmd |= CMD_CFG_DATA_IO | CMD_CFG_BLOCK_MODE | + data->blocks; + } + + meson_mmc_cmd |= CMD_CFG_TIMEOUT_4S | CMD_CFG_OWNER | + CMD_CFG_END_OF_CHAIN; + + meson_write(mmc, meson_mmc_cmd, MESON_SD_EMMC_CMD_CFG); +} + +static void meson_mmc_setup_addr(struct mmc *mmc, struct mmc_data *data) +{ + struct meson_mmc_platdata *pdata = mmc->priv; + unsigned int data_size; + uint32_t data_addr = 0; + + if (data) { + data_size = data->blocks * data->blocksize; + + if (data->flags == MMC_DATA_READ) { + data_addr = (ulong) data->dest; + invalidate_dcache_range(data_addr, + data_addr + data_size); + } else { + pdata->w_buf = calloc(data_size, sizeof(char)); + data_addr = (ulong) pdata->w_buf; + memcpy(pdata->w_buf, data->src, data_size); + flush_dcache_range(data_addr, data_addr + data_size); + } + } + + meson_write(mmc, data_addr, MESON_SD_EMMC_CMD_DAT); +} + +static void meson_mmc_read_response(struct mmc *mmc, struct mmc_cmd *cmd) +{ + if (cmd->resp_type & MMC_RSP_136) { + cmd->response[0] = meson_read(mmc, MESON_SD_EMMC_CMD_RSP3); + cmd->response[1] = meson_read(mmc, MESON_SD_EMMC_CMD_RSP2); + cmd->response[2] = meson_read(mmc, MESON_SD_EMMC_CMD_RSP1); + cmd->response[3] = meson_read(mmc, MESON_SD_EMMC_CMD_RSP); + } else { + cmd->response[0] = meson_read(mmc, MESON_SD_EMMC_CMD_RSP); + } +} + +static int meson_dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, + struct mmc_data *data) +{ + struct mmc *mmc = mmc_get_mmc_dev(dev); + struct meson_mmc_platdata *pdata = mmc->priv; + uint32_t status; + ulong start; + int ret = 0; + + /* max block size supported by chip is 512 byte */ + if (data && data->blocksize > 512) + return -EINVAL; + + meson_mmc_setup_cmd(mmc, data, cmd); + meson_mmc_setup_addr(mmc, data); + + meson_write(mmc, cmd->cmdarg, MESON_SD_EMMC_CMD_ARG); + + /* use 10s timeout */ + start = get_timer(0); + do { + status = meson_read(mmc, MESON_SD_EMMC_STATUS); + } while(!(status & STATUS_END_OF_CHAIN) && get_timer(start) < 10000); + + if (!(status & STATUS_END_OF_CHAIN)) + ret = -ETIMEDOUT; + else if (status & STATUS_RESP_TIMEOUT) + ret = -ETIMEDOUT; + else if (status & STATUS_ERR_MASK) + ret = -EIO; + + meson_mmc_read_response(mmc, cmd); + + if (data && data->flags == MMC_DATA_WRITE) + free(pdata->w_buf); + + /* reset status bits */ + meson_write(mmc, STATUS_MASK, MESON_SD_EMMC_STATUS); + + return ret; +} + +static const struct dm_mmc_ops meson_dm_mmc_ops = { + .send_cmd = meson_dm_mmc_send_cmd, + .set_ios = meson_dm_mmc_set_ios, +}; + +static int meson_mmc_ofdata_to_platdata(struct udevice *dev) +{ + struct meson_mmc_platdata *pdata = dev_get_platdata(dev); + fdt_addr_t addr; + + addr = dev_get_addr(dev); + if (addr == FDT_ADDR_T_NONE) + return -EINVAL; + + pdata->regbase = (void *)addr; + + return 0; +} + +static int meson_mmc_probe(struct udevice *dev) +{ + struct meson_mmc_platdata *pdata = dev_get_platdata(dev); + struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); + struct mmc *mmc = &pdata->mmc; + struct mmc_config *cfg = &pdata->cfg; + uint32_t val; + + cfg->voltages = MMC_VDD_33_34 | MMC_VDD_32_33 | + MMC_VDD_31_32 | MMC_VDD_165_195; + cfg->host_caps = MMC_MODE_8BIT | MMC_MODE_4BIT | + MMC_MODE_HS_52MHz | MMC_MODE_HS; + cfg->f_min = DIV_ROUND_UP(SD_EMMC_CLKSRC_24M, CLK_MAX_DIV); + cfg->f_max = 100000000; /* 100 MHz */ + cfg->b_max = 256; /* max 256 blocks */ + cfg->name = dev->name; + + mmc->priv = pdata; + upriv->mmc = mmc; + + mmc_set_clock(mmc, cfg->f_min); + + /* reset all status bits */ + meson_write(mmc, STATUS_MASK, MESON_SD_EMMC_STATUS); + + /* disable interrupts */ + meson_write(mmc, 0, MESON_SD_EMMC_IRQ_EN); + + /* enable auto clock mode */ + val = meson_read(mmc, MESON_SD_EMMC_CFG); + val &= ~CFG_SDCLK_ALWAYS_ON; + val |= CFG_AUTO_CLK; + meson_write(mmc, val, MESON_SD_EMMC_CFG); + + return 0; +} + +int meson_mmc_bind(struct udevice *dev) +{ + struct meson_mmc_platdata *pdata = dev_get_platdata(dev); + + return mmc_bind(dev, &pdata->mmc, &pdata->cfg); +} + +static const struct udevice_id meson_mmc_match[] = { + { .compatible = "amlogic,meson-gx-mmc" }, + { /* sentinel */ } +}; + +U_BOOT_DRIVER(meson_mmc) = { + .name = "meson_gx_mmc", + .id = UCLASS_MMC, + .of_match = meson_mmc_match, + .ops = &meson_dm_mmc_ops, + .probe = meson_mmc_probe, + .bind = meson_mmc_bind, + .ofdata_to_platdata = meson_mmc_ofdata_to_platdata, + .platdata_auto_alloc_size = sizeof(struct meson_mmc_platdata), +}; diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index c94d58d..b745977 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -72,6 +72,7 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data, unsigned int start_addr) { unsigned int stat, rdy, mask, timeout, block = 0; + bool transfer_done = false; #ifdef CONFIG_MMC_SDHCI_SDMA unsigned char ctrl; ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); @@ -89,17 +90,23 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data, __func__, stat); return -EIO; } - if (stat & rdy) { + if (!transfer_done && (stat & rdy)) { if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & mask)) continue; sdhci_writel(host, rdy, SDHCI_INT_STATUS); sdhci_transfer_pio(host, data); data->dest += data->blocksize; - if (++block >= data->blocks) - break; + if (++block >= data->blocks) { + /* Keep looping until the SDHCI_INT_DATA_END is + * cleared, even if we finished sending all the + * blocks. + */ + transfer_done = true; + continue; + } } #ifdef CONFIG_MMC_SDHCI_SDMA - if (stat & SDHCI_INT_DMA_END) { + if (!transfer_done && (stat & SDHCI_INT_DMA_END)) { sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS); start_addr &= ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1); start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE; |