* Author: Martin Lundholm <martin.xa.lundholm@stericsson.com>
* Ported to drivers/mmc/ by: Matt Waddel <matt.waddel@linaro.org>
*
- * 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 */
#include "arm_pl180_mmci.h"
#include <malloc.h>
-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))
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;
}
{
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);
{
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);
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);
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);
writel(data_ctrl, &host->base->datactrl);
error = write_bytes(dev, (u32 *)data->src, (u32)data->blocks,
- (u32)data->blocksize);
+ (u32)data->blocksize);
}
return error;
/* 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);
/* 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;
}
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);
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;
}
projects / karo-tx-uboot.git / blobdiff