X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Fmmc%2Farm_pl180_mmci.c;h=5ef7ff7ff2b7fa584c36d64e8f9f530f43cd7425;hb=2c3dc792b6df16970077c0d64085e29f1f85d4c8;hp=e6467a2d186f3a86cf3f4baec0db5dfcf7905645;hpb=c7801ee43b6263246e782000b71753caac5fe9c6;p=karo-tx-uboot.git diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c index e6467a2d18..5ef7ff7ff2 100644 --- a/drivers/mmc/arm_pl180_mmci.c +++ b/drivers/mmc/arm_pl180_mmci.c @@ -7,20 +7,7 @@ * Author: Martin Lundholm * Ported to drivers/mmc/ by: Matt Waddel * - * 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+ */ /* #define DEBUG */ @@ -32,14 +19,10 @@ #include "arm_pl180_mmci.h" #include -struct mmc_host { - struct sdi_registers *base; -}; - static int wait_for_command_end(struct mmc *dev, struct mmc_cmd *cmd) { u32 hoststatus, statusmask; - struct mmc_host *host = dev->priv; + struct pl180_mmc_host *host = dev->priv; statusmask = SDI_STA_CTIMEOUT | SDI_STA_CCRCFAIL; if ((cmd->resp_type & MMC_RSP_PRESENT)) @@ -53,10 +36,10 @@ static int wait_for_command_end(struct mmc *dev, struct mmc_cmd *cmd) writel(statusmask, &host->base->status_clear); if (hoststatus & SDI_STA_CTIMEOUT) { - printf("CMD%d time out\n", cmd->cmdidx); - return -ETIMEDOUT; + debug("CMD%d time out\n", cmd->cmdidx); + return TIMEOUT; } else if ((hoststatus & SDI_STA_CCRCFAIL) && - (cmd->flags & MMC_RSP_CRC)) { + (cmd->resp_type & MMC_RSP_CRC)) { printf("CMD%d CRC error\n", cmd->cmdidx); return -EILSEQ; } @@ -80,7 +63,7 @@ static int do_command(struct mmc *dev, struct mmc_cmd *cmd) { int result; u32 sdi_cmd = 0; - struct mmc_host *host = dev->priv; + struct pl180_mmc_host *host = dev->priv; sdi_cmd = ((cmd->cmdidx & SDI_CMD_CMDINDEX_MASK) | SDI_CMD_CPSMEN); @@ -112,7 +95,7 @@ static int read_bytes(struct mmc *dev, u32 *dest, u32 blkcount, u32 blksize) { u32 *tempbuff = dest; u64 xfercount = blkcount * blksize; - struct mmc_host *host = dev->priv; + struct pl180_mmc_host *host = dev->priv; u32 status, status_err; debug("read_bytes: blkcount=%u blksize=%u\n", blkcount, blksize); @@ -168,7 +151,7 @@ static int write_bytes(struct mmc *dev, u32 *src, u32 blkcount, u32 blksize) u32 *tempbuff = src; int i; u64 xfercount = blkcount * blksize; - struct mmc_host *host = dev->priv; + struct pl180_mmc_host *host = dev->priv; u32 status, status_err; debug("write_bytes: blkcount=%u blksize=%u\n", blkcount, blksize); @@ -227,14 +210,19 @@ static int do_data_transfer(struct mmc *dev, struct mmc_data *data) { int error = -ETIMEDOUT; - struct mmc_host *host = dev->priv; + struct pl180_mmc_host *host = dev->priv; u32 blksz = 0; u32 data_ctrl = 0; u32 data_len = (u32) (data->blocks * data->blocksize); - blksz = (ffs(data->blocksize) - 1); - data_ctrl |= ((blksz << 4) & SDI_DCTRL_DBLKSIZE_MASK); - data_ctrl |= SDI_DCTRL_DTEN; + if (!host->version2) { + blksz = (ffs(data->blocksize) - 1); + data_ctrl |= ((blksz << 4) & SDI_DCTRL_DBLKSIZE_MASK); + } else { + blksz = data->blocksize; + data_ctrl |= (blksz << SDI_DCTRL_DBLOCKSIZE_V2_SHIFT); + } + data_ctrl |= SDI_DCTRL_DTEN | SDI_DCTRL_BUSYMODE; writel(SDI_DTIMER_DEFAULT, &host->base->datatimer); writel(data_len, &host->base->datalength); @@ -257,7 +245,7 @@ static int do_data_transfer(struct mmc *dev, writel(data_ctrl, &host->base->datactrl); error = write_bytes(dev, (u32 *)data->src, (u32)data->blocks, - (u32)data->blocksize); + (u32)data->blocksize); } return error; @@ -280,17 +268,16 @@ static int host_request(struct mmc *dev, /* MMC uses open drain drivers in the enumeration phase */ static int mmc_host_reset(struct mmc *dev) { - struct mmc_host *host = dev->priv; - u32 sdi_u32 = SDI_PWR_OPD | SDI_PWR_PWRCTRL_ON; + struct pl180_mmc_host *host = dev->priv; - writel(sdi_u32, &host->base->power); + writel(host->pwr_init, &host->base->power); return 0; } static void host_set_ios(struct mmc *dev) { - struct mmc_host *host = dev->priv; + struct pl180_mmc_host *host = dev->priv; u32 sdi_clkcr; sdi_clkcr = readl(&host->base->clock); @@ -298,15 +285,26 @@ static void host_set_ios(struct mmc *dev) /* Ramp up the clock rate */ if (dev->clock) { u32 clkdiv = 0; + u32 tmp_clock; - if (dev->clock >= dev->f_max) - dev->clock = dev->f_max; + if (dev->clock >= dev->cfg->f_max) { + clkdiv = 0; + dev->clock = dev->cfg->f_max; + } else { + clkdiv = (host->clock_in / dev->clock) - 2; + } - clkdiv = ((ARM_MCLK / dev->clock) / 2) - 1; + tmp_clock = host->clock_in / (clkdiv + 2); + while (tmp_clock > dev->clock) { + clkdiv++; + tmp_clock = host->clock_in / (clkdiv + 2); + } if (clkdiv > SDI_CLKCR_CLKDIV_MASK) clkdiv = SDI_CLKCR_CLKDIV_MASK; + tmp_clock = host->clock_in / (clkdiv + 2); + dev->clock = tmp_clock; sdi_clkcr &= ~(SDI_CLKCR_CLKDIV_MASK); sdi_clkcr |= clkdiv; } @@ -322,8 +320,11 @@ static void host_set_ios(struct mmc *dev) case 4: buswidth |= SDI_CLKCR_WIDBUS_4; break; + case 8: + buswidth |= SDI_CLKCR_WIDBUS_8; + break; default: - printf("Invalid bus width\n"); + printf("Invalid bus width: %d\n", dev->bus_width); break; } sdi_clkcr &= ~(SDI_CLKCR_WIDBUS_MASK); @@ -334,84 +335,47 @@ static void host_set_ios(struct mmc *dev) udelay(CLK_CHANGE_DELAY); } -struct mmc *alloc_mmc_struct(void) -{ - struct mmc_host *host = NULL; - struct mmc *mmc_device = NULL; - - host = malloc(sizeof(struct mmc_host)); - if (!host) - return NULL; - - mmc_device = malloc(sizeof(struct mmc)); - if (!mmc_device) - goto err; - - mmc_device->priv = host; - return mmc_device; - -err: - free(host); - return NULL; -} +static const struct mmc_ops arm_pl180_mmci_ops = { + .send_cmd = host_request, + .set_ios = host_set_ios, + .init = mmc_host_reset, +}; /* * mmc_host_init - initialize the mmc controller. * Set initial clock and power for mmc slot. * Initialize mmc struct and register with mmc framework. */ -static int arm_pl180_mmci_host_init(struct mmc *dev) +int arm_pl180_mmci_init(struct pl180_mmc_host *host) { - struct mmc_host *host = dev->priv; + struct mmc *mmc; u32 sdi_u32; - host->base = (struct sdi_registers *)CONFIG_ARM_PL180_MMCI_BASE; - - /* Initially set power-on, full voltage & MMCI read */ - sdi_u32 = INIT_PWR; - writel(sdi_u32, &host->base->power); - - /* setting clk freq 505KHz */ - sdi_u32 = SDI_CLKCR_CLKDIV_INIT | SDI_CLKCR_CLKEN; - writel(sdi_u32, &host->base->clock); + writel(host->pwr_init, &host->base->power); + writel(host->clkdiv_init, &host->base->clock); udelay(CLK_CHANGE_DELAY); /* Disable mmc interrupts */ sdi_u32 = readl(&host->base->mask0) & ~SDI_MASK0_MASK; writel(sdi_u32, &host->base->mask0); - sprintf(dev->name, "MMC"); - dev->clock = ARM_MCLK / (2 * (SDI_CLKCR_CLKDIV_INIT + 1)); - dev->send_cmd = host_request; - dev->set_ios = host_set_ios; - dev->init = mmc_host_reset; - dev->host_caps = 0; - dev->voltages = VOLTAGE_WINDOW_MMC; - dev->f_min = dev->clock; - dev->f_max = CONFIG_ARM_PL180_MMCI_CLOCK_FREQ; - - return 0; -} - -int arm_pl180_mmci_init(void) -{ - int error; - struct mmc *dev; - - dev = alloc_mmc_struct(); - if (!dev) - return -1; + host->cfg.name = host->name; + host->cfg.ops = &arm_pl180_mmci_ops; + /* TODO remove the duplicates */ + host->cfg.host_caps = host->caps; + host->cfg.voltages = host->voltages; + host->cfg.f_min = host->clock_min; + host->cfg.f_max = host->clock_max; + if (host->b_max != 0) + host->cfg.b_max = host->b_max; + else + host->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; - error = arm_pl180_mmci_host_init(dev); - if (error) { - printf("mmci_host_init error - %d\n", error); + mmc = mmc_create(&host->cfg, host); + if (mmc == NULL) return -1; - } - - dev->b_max = 0; - mmc_register(dev); - debug("registered mmc interface number is:%d\n", dev->block_dev.dev); + debug("registered mmc interface number is:%d\n", mmc->block_dev.dev); return 0; }