X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmmc%2Fmxcmmc.c;h=dcf17c5d60e90a1569fd0dea00087375a0f665e4;hb=refs%2Ftags%2Fv2018.03-rc1;hp=d30717661f95f02e44296c7b984812a2ad2a648a;hpb=9e4623a0addf58fe4fd389fbdd559c179146f4a0;p=u-boot diff --git a/drivers/mmc/mxcmmc.c b/drivers/mmc/mxcmmc.c index d30717661f..dcf17c5d60 100644 --- a/drivers/mmc/mxcmmc.c +++ b/drivers/mmc/mxcmmc.c @@ -23,11 +23,9 @@ #include #include #include -#include +#include #include -#ifdef CONFIG_MX27 #include -#endif #define DRIVER_NAME "mxc-mmc" @@ -124,6 +122,8 @@ struct mxcmci_host { }; static struct mxcmci_host mxcmci_host; + +/* maintainer note: do we really want to have a global host pointer? */ static struct mxcmci_host *host = &mxcmci_host; static inline int mxcmci_use_dma(struct mxcmci_host *host) @@ -136,14 +136,14 @@ static void mxcmci_softreset(struct mxcmci_host *host) int i; /* reset sequence */ - writew(STR_STP_CLK_RESET, &host->base->str_stp_clk); - writew(STR_STP_CLK_RESET | STR_STP_CLK_START_CLK, + writel(STR_STP_CLK_RESET, &host->base->str_stp_clk); + writel(STR_STP_CLK_RESET | STR_STP_CLK_START_CLK, &host->base->str_stp_clk); for (i = 0; i < 8; i++) - writew(STR_STP_CLK_START_CLK, &host->base->str_stp_clk); + writel(STR_STP_CLK_START_CLK, &host->base->str_stp_clk); - writew(0xff, &host->base->res_to); + writel(0xff, &host->base->res_to); } static void mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) @@ -154,8 +154,8 @@ static void mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) host->data = data; - writew(nob, &host->base->nob); - writew(blksz, &host->base->blk_len); + writel(nob, &host->base->nob); + writel(blksz, &host->base->blk_len); host->datasize = datasize; } @@ -185,9 +185,9 @@ static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_cmd *cmd, return -EINVAL; } - writew(cmd->cmdidx, &host->base->cmd); + writel(cmd->cmdidx, &host->base->cmd); writel(cmd->cmdarg, &host->base->arg); - writew(cmdat, &host->base->cmd_dat_cont); + writel(cmdat, &host->base->cmd_dat_cont); return 0; } @@ -211,11 +211,11 @@ static int mxcmci_finish_data(struct mxcmci_host *host, unsigned int stat) } else if (stat & STATUS_CRC_WRITE_ERR) { u32 err_code = (stat >> 9) & 0x3; if (err_code == 2) /* No CRC response */ - data_error = TIMEOUT; + data_error = -ETIMEDOUT; else data_error = -EILSEQ; } else if (stat & STATUS_TIME_OUT_READ) { - data_error = TIMEOUT; + data_error = -ETIMEDOUT; } else { data_error = -EIO; } @@ -238,7 +238,7 @@ static int mxcmci_read_response(struct mxcmci_host *host, unsigned int stat) if (stat & STATUS_TIME_OUT_RESP) { printf("CMD TIMEOUT\n"); - return TIMEOUT; + return -ETIMEDOUT; } else if (stat & STATUS_RESP_CRC_ERR && cmd->resp_type & MMC_RSP_CRC) { printf("cmd crc error\n"); return -EILSEQ; @@ -247,14 +247,14 @@ static int mxcmci_read_response(struct mxcmci_host *host, unsigned int stat) if (cmd->resp_type & MMC_RSP_PRESENT) { if (cmd->resp_type & MMC_RSP_136) { for (i = 0; i < 4; i++) { - a = readw(&host->base->res_fifo); - b = readw(&host->base->res_fifo); + a = readl(&host->base->res_fifo) & 0xFFFF; + b = readl(&host->base->res_fifo) & 0xFFFF; resp[i] = a << 16 | b; } } else { - a = readw(&host->base->res_fifo); - b = readw(&host->base->res_fifo); - c = readw(&host->base->res_fifo); + a = readl(&host->base->res_fifo) & 0xFFFF; + b = readl(&host->base->res_fifo) & 0xFFFF; + c = readl(&host->base->res_fifo) & 0xFFFF; resp[0] = a << 24 | b << 8 | c >> 8; } } @@ -422,7 +422,7 @@ static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios) { unsigned int divider; int prescaler = 0; - unsigned long clk_in = imx_get_perclk2(); + unsigned long clk_in = mxc_get_clock(MXC_ESDHC_CLK); while (prescaler <= 0x800) { for (divider = 1; divider <= 0xF; divider++) { @@ -445,10 +445,10 @@ static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios) prescaler <<= 1; } - writew((prescaler << 4) | divider, &host->base->clk_rate); + writel((prescaler << 4) | divider, &host->base->clk_rate); } -static void mxcmci_set_ios(struct mmc *mmc) +static int mxcmci_set_ios(struct mmc *mmc) { struct mxcmci_host *host = mmc->priv; if (mmc->bus_width == 4) @@ -458,12 +458,14 @@ static void mxcmci_set_ios(struct mmc *mmc) if (mmc->clock) { mxcmci_set_clk_rate(host, mmc->clock); - writew(STR_STP_CLK_START_CLK, &host->base->str_stp_clk); + writel(STR_STP_CLK_START_CLK, &host->base->str_stp_clk); } else { - writew(STR_STP_CLK_STOP_CLK, &host->base->str_stp_clk); + writel(STR_STP_CLK_STOP_CLK, &host->base->str_stp_clk); } host->clock = mmc->clock; + + return 0; } static int mxcmci_init(struct mmc *mmc) @@ -472,7 +474,7 @@ static int mxcmci_init(struct mmc *mmc) mxcmci_softreset(host); - host->rev_no = readw(&host->base->rev_no); + host->rev_no = readl(&host->base->rev_no); if (host->rev_no != 0x400) { printf("wrong rev.no. 0x%08x. aborting.\n", host->rev_no); @@ -480,38 +482,37 @@ static int mxcmci_init(struct mmc *mmc) } /* recommended in data sheet */ - writew(0x2db4, &host->base->read_to); + writel(0x2db4, &host->base->read_to); writel(0, &host->base->int_cntr); return 0; } -static int mxcmci_initialize(bd_t *bis) -{ - struct mmc *mmc = NULL; - - mmc = malloc(sizeof(struct mmc)); - - if (!mmc) - return -ENOMEM; +static const struct mmc_ops mxcmci_ops = { + .send_cmd = mxcmci_request, + .set_ios = mxcmci_set_ios, + .init = mxcmci_init, +}; - sprintf(mmc->name, "MXC MCI"); - mmc->send_cmd = mxcmci_request; - mmc->set_ios = mxcmci_set_ios; - mmc->init = mxcmci_init; - mmc->host_caps = MMC_MODE_4BIT; +static struct mmc_config mxcmci_cfg = { + .name = "MXC MCI", + .ops = &mxcmci_ops, + .host_caps = MMC_MODE_4BIT, + .voltages = MMC_VDD_32_33 | MMC_VDD_33_34, + .b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT, +}; +static int mxcmci_initialize(bd_t *bis) +{ host->base = (struct mxcmci_regs *)CONFIG_MXC_MCI_REGS_BASE; - mmc->priv = host; - host->mmc = mmc; - - mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34; - mmc->f_min = imx_get_perclk2() >> 7; - mmc->f_max = imx_get_perclk2() >> 1; + mxcmci_cfg.f_min = mxc_get_clock(MXC_ESDHC_CLK) >> 7; + mxcmci_cfg.f_max = mxc_get_clock(MXC_ESDHC_CLK) >> 1; - mmc_register(mmc); + host->mmc = mmc_create(&mxcmci_cfg, host); + if (host->mmc == NULL) + return -1; return 0; }