X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmmc%2Fmxsmmc.c;h=fe1fe707a58b53faf797060d3de70b9c35cadd5c;hb=9415b9a7d85c6c77698a551c47765720c2caef91;hp=024df592f2256bd7f846683fd1f8d3ff61baa529;hpb=a098cf41fdb2a6607c675f7fe4f3164617c9367e;p=u-boot diff --git a/drivers/mmc/mxsmmc.c b/drivers/mmc/mxsmmc.c index 024df592f2..fe1fe707a5 100644 --- a/drivers/mmc/mxsmmc.c +++ b/drivers/mmc/mxsmmc.c @@ -15,48 +15,42 @@ * (C) Copyright 2003 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 #include #include #include #include -#include +#include #include struct mxsmmc_priv { int id; struct mxs_ssp_regs *regs; - uint32_t clkseq_bypass; - uint32_t *clkctrl_ssp; uint32_t buswidth; int (*mmc_is_wp)(int); + int (*mmc_cd)(int); struct mxs_dma_desc *desc; + struct mmc_config cfg; /* mmc configuration */ }; #define MXSMMC_MAX_TIMEOUT 10000 #define MXSMMC_SMALL_TRANSFER 512 +static int mxsmmc_cd(struct mxsmmc_priv *priv) +{ + struct mxs_ssp_regs *ssp_regs = priv->regs; + + if (priv->mmc_cd) + return priv->mmc_cd(priv->id); + + return !(readl(&ssp_regs->hw_ssp_status) & SSP_STATUS_CARD_DETECT); +} + static int mxsmmc_send_cmd_pio(struct mxsmmc_priv *priv, struct mmc_data *data) { struct mxs_ssp_regs *ssp_regs = priv->regs; @@ -90,7 +84,7 @@ static int mxsmmc_send_cmd_pio(struct mxsmmc_priv *priv, struct mmc_data *data) } } - return timeout ? 0 : COMM_ERR; + return timeout ? 0 : -ECOMM; } static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data) @@ -126,7 +120,7 @@ static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data) mxs_dma_desc_append(dmach, priv->desc); if (mxs_dma_go(dmach)) { bounce_buffer_stop(&bbstate); - return COMM_ERR; + return -ECOMM; } bounce_buffer_stop(&bbstate); @@ -141,14 +135,14 @@ static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data) static int mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { - struct mxsmmc_priv *priv = (struct mxsmmc_priv *)mmc->priv; + struct mxsmmc_priv *priv = mmc->priv; struct mxs_ssp_regs *ssp_regs = priv->regs; uint32_t reg; int timeout; uint32_t ctrl0; int ret; - debug("MMC%d: CMD%d\n", mmc->block_dev.dev, cmd->cmdidx); + debug("MMC%d: CMD%d\n", mmc->block_dev.devnum, cmd->cmdidx); /* Check bus busy */ timeout = MXSMMC_MAX_TIMEOUT; @@ -163,14 +157,14 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) } if (!timeout) { - printf("MMC%d: Bus busy timeout!\n", mmc->block_dev.dev); - return TIMEOUT; + printf("MMC%d: Bus busy timeout!\n", mmc->block_dev.devnum); + return -ETIMEDOUT; } /* See if card is present */ - if (readl(&ssp_regs->hw_ssp_status) & SSP_STATUS_CARD_DETECT) { - printf("MMC%d: No card detected!\n", mmc->block_dev.dev); - return NO_CARD_ERR; + if (!mxsmmc_cd(priv)) { + printf("MMC%d: No card detected!\n", mmc->block_dev.devnum); + return -ENOMEDIUM; } /* Start building CTRL0 contents */ @@ -206,21 +200,32 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) if (data->flags & MMC_DATA_READ) { ctrl0 |= SSP_CTRL0_READ; } else if (priv->mmc_is_wp && - priv->mmc_is_wp(mmc->block_dev.dev)) { + priv->mmc_is_wp(mmc->block_dev.devnum)) { printf("MMC%d: Can not write a locked card!\n", - mmc->block_dev.dev); - return UNUSABLE_ERR; + mmc->block_dev.devnum); + return -EOPNOTSUPP; } ctrl0 |= SSP_CTRL0_DATA_XFER; + + reg = data->blocksize * data->blocks; +#if defined(CONFIG_MX23) + ctrl0 |= reg & SSP_CTRL0_XFER_COUNT_MASK; + + clrsetbits_le32(&ssp_regs->hw_ssp_cmd0, + SSP_CMD0_BLOCK_SIZE_MASK | SSP_CMD0_BLOCK_COUNT_MASK, + ((data->blocks - 1) << SSP_CMD0_BLOCK_COUNT_OFFSET) | + ((ffs(data->blocksize) - 1) << + SSP_CMD0_BLOCK_SIZE_OFFSET)); +#elif defined(CONFIG_MX28) + writel(reg, &ssp_regs->hw_ssp_xfer_size); + reg = ((data->blocks - 1) << SSP_BLOCK_SIZE_BLOCK_COUNT_OFFSET) | ((ffs(data->blocksize) - 1) << SSP_BLOCK_SIZE_BLOCK_SIZE_OFFSET); writel(reg, &ssp_regs->hw_ssp_block_size); - - reg = data->blocksize * data->blocks; - writel(reg, &ssp_regs->hw_ssp_xfer_size); +#endif } /* Kick off the command */ @@ -238,22 +243,22 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) if (!timeout) { printf("MMC%d: Command %d busy\n", - mmc->block_dev.dev, cmd->cmdidx); - return TIMEOUT; + mmc->block_dev.devnum, cmd->cmdidx); + return -ETIMEDOUT; } /* Check command timeout */ if (reg & SSP_STATUS_RESP_TIMEOUT) { printf("MMC%d: Command %d timeout (status 0x%08x)\n", - mmc->block_dev.dev, cmd->cmdidx, reg); - return TIMEOUT; + mmc->block_dev.devnum, cmd->cmdidx, reg); + return -ETIMEDOUT; } /* Check command errors */ if (reg & (SSP_STATUS_RESP_CRC_ERR | SSP_STATUS_RESP_ERR)) { printf("MMC%d: Command %d error (status 0x%08x)!\n", - mmc->block_dev.dev, cmd->cmdidx, reg); - return COMM_ERR; + mmc->block_dev.devnum, cmd->cmdidx, reg); + return -ECOMM; } /* Copy response to response buffer */ @@ -274,14 +279,14 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) if (ret) { printf("MMC%d: Data timeout with command %d " "(status 0x%08x)!\n", - mmc->block_dev.dev, cmd->cmdidx, reg); + mmc->block_dev.devnum, cmd->cmdidx, reg); return ret; } } else { ret = mxsmmc_send_cmd_dma(priv, data); if (ret) { printf("MMC%d: DMA transfer failed\n", - mmc->block_dev.dev); + mmc->block_dev.devnum); return ret; } } @@ -292,21 +297,21 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) (SSP_STATUS_TIMEOUT | SSP_STATUS_DATA_CRC_ERR | SSP_STATUS_FIFO_OVRFLW | SSP_STATUS_FIFO_UNDRFLW)) { printf("MMC%d: Data error with command %d (status 0x%08x)!\n", - mmc->block_dev.dev, cmd->cmdidx, reg); - return COMM_ERR; + mmc->block_dev.devnum, cmd->cmdidx, reg); + return -ECOMM; } return 0; } -static void mxsmmc_set_ios(struct mmc *mmc) +static int mxsmmc_set_ios(struct mmc *mmc) { - struct mxsmmc_priv *priv = (struct mxsmmc_priv *)mmc->priv; + struct mxsmmc_priv *priv = mmc->priv; struct mxs_ssp_regs *ssp_regs = priv->regs; /* Set the clock speed */ if (mmc->clock) - mx28_set_ssp_busclock(priv->id, mmc->clock / 1000); + mxs_set_ssp_busclock(priv->id, mmc->clock / 1000); switch (mmc->bus_width) { case 1: @@ -325,25 +330,33 @@ static void mxsmmc_set_ios(struct mmc *mmc) SSP_CTRL0_BUS_WIDTH_MASK, priv->buswidth); debug("MMC%d: Set %d bits bus width\n", - mmc->block_dev.dev, mmc->bus_width); + mmc->block_dev.devnum, mmc->bus_width); + + return 0; } static int mxsmmc_init(struct mmc *mmc) { - struct mxsmmc_priv *priv = (struct mxsmmc_priv *)mmc->priv; + struct mxsmmc_priv *priv = mmc->priv; struct mxs_ssp_regs *ssp_regs = priv->regs; /* Reset SSP */ mxs_reset_block(&ssp_regs->hw_ssp_ctrl0_reg); - /* 8 bits word length in MMC mode */ - clrsetbits_le32(&ssp_regs->hw_ssp_ctrl1, - SSP_CTRL1_SSP_MODE_MASK | SSP_CTRL1_WORD_LENGTH_MASK | - SSP_CTRL1_DMA_ENABLE, - SSP_CTRL1_SSP_MODE_SD_MMC | SSP_CTRL1_WORD_LENGTH_EIGHT_BITS); + /* Reconfigure the SSP block for MMC operation */ + writel(SSP_CTRL1_SSP_MODE_SD_MMC | + SSP_CTRL1_WORD_LENGTH_EIGHT_BITS | + SSP_CTRL1_DMA_ENABLE | + SSP_CTRL1_POLARITY | + SSP_CTRL1_RECV_TIMEOUT_IRQ_EN | + SSP_CTRL1_DATA_CRC_IRQ_EN | + SSP_CTRL1_DATA_TIMEOUT_IRQ_EN | + SSP_CTRL1_RESP_TIMEOUT_IRQ_EN | + SSP_CTRL1_RESP_ERR_IRQ_EN, + &ssp_regs->hw_ssp_ctrl1_set); /* Set initial bit clock 400 KHz */ - mx28_set_ssp_busclock(priv->id, 400); + mxs_set_ssp_busclock(priv->id, 400); /* Send initial 74 clock cycles (185 us @ 400 KHz)*/ writel(SSP_CMD0_CONT_CLKING_EN, &ssp_regs->hw_ssp_cmd0_set); @@ -353,70 +366,47 @@ static int mxsmmc_init(struct mmc *mmc) return 0; } -int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int)) +static const struct mmc_ops mxsmmc_ops = { + .send_cmd = mxsmmc_send_cmd, + .set_ios = mxsmmc_set_ios, + .init = mxsmmc_init, +}; + +int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int)) { - struct mxs_clkctrl_regs *clkctrl_regs = - (struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE; struct mmc *mmc = NULL; struct mxsmmc_priv *priv = NULL; int ret; + const unsigned int mxsmmc_clk_id = mxs_ssp_clock_by_bus(id); - mmc = malloc(sizeof(struct mmc)); - if (!mmc) - return -ENOMEM; + if (!mxs_ssp_bus_id_valid(id)) + return -ENODEV; priv = malloc(sizeof(struct mxsmmc_priv)); - if (!priv) { - free(mmc); + if (!priv) return -ENOMEM; - } priv->desc = mxs_dma_desc_alloc(); if (!priv->desc) { free(priv); - free(mmc); return -ENOMEM; } - ret = mxs_dma_init_channel(id); + ret = mxs_dma_init_channel(MXS_DMA_CHANNEL_AHB_APBH_SSP0 + id); if (ret) return ret; priv->mmc_is_wp = wp; + priv->mmc_cd = cd; priv->id = id; - switch (id) { - case 0: - priv->regs = (struct mxs_ssp_regs *)MXS_SSP0_BASE; - priv->clkseq_bypass = CLKCTRL_CLKSEQ_BYPASS_SSP0; - priv->clkctrl_ssp = &clkctrl_regs->hw_clkctrl_ssp0; - break; - case 1: - priv->regs = (struct mxs_ssp_regs *)MXS_SSP1_BASE; - priv->clkseq_bypass = CLKCTRL_CLKSEQ_BYPASS_SSP1; - priv->clkctrl_ssp = &clkctrl_regs->hw_clkctrl_ssp1; - break; - case 2: - priv->regs = (struct mxs_ssp_regs *)MXS_SSP2_BASE; - priv->clkseq_bypass = CLKCTRL_CLKSEQ_BYPASS_SSP2; - priv->clkctrl_ssp = &clkctrl_regs->hw_clkctrl_ssp2; - break; - case 3: - priv->regs = (struct mxs_ssp_regs *)MXS_SSP3_BASE; - priv->clkseq_bypass = CLKCTRL_CLKSEQ_BYPASS_SSP3; - priv->clkctrl_ssp = &clkctrl_regs->hw_clkctrl_ssp3; - break; - } + priv->regs = mxs_ssp_regs_by_bus(id); - sprintf(mmc->name, "MXS MMC"); - mmc->send_cmd = mxsmmc_send_cmd; - mmc->set_ios = mxsmmc_set_ios; - mmc->init = mxsmmc_init; - mmc->getcd = NULL; - mmc->priv = priv; + priv->cfg.name = "MXS MMC"; + priv->cfg.ops = &mxsmmc_ops; - mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34; + priv->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34; - mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT | + priv->cfg.host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS; /* @@ -425,10 +415,15 @@ int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int)) * CLOCK_DIVIDE has to be an even value from 2 to 254, and * CLOCK_RATE could be any integer from 0 to 255. */ - mmc->f_min = 400000; - mmc->f_max = mxc_get_clock(MXC_SSP0_CLK + id) * 1000 / 2; - mmc->b_max = 0x20; + priv->cfg.f_min = 400000; + priv->cfg.f_max = mxc_get_clock(MXC_SSP0_CLK + mxsmmc_clk_id) * 1000 / 2; + priv->cfg.b_max = 0x20; - mmc_register(mmc); + mmc = mmc_create(&priv->cfg, priv); + if (mmc == NULL) { + mxs_dma_desc_free(priv->desc); + free(priv); + return -ENOMEM; + } return 0; }