* (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 <common.h>
#include <malloc.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/sys_proto.h>
-#include <asm/arch/dma.h>
+#include <asm/imx-common/dma.h>
#include <bouncebuf.h>
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;
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;
}
/* See if card is present */
- if (readl(&ssp_regs->hw_ssp_status) & SSP_STATUS_CARD_DETECT) {
+ if (!mxsmmc_cd(priv)) {
printf("MMC%d: No card detected!\n", mmc->block_dev.dev);
return NO_CARD_ERR;
}
}
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 */
static void 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:
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);
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 |
- MMC_MODE_HS_52MHz | MMC_MODE_HS;
+ priv->cfg.host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT |
+ MMC_MODE_HS_52MHz | MMC_MODE_HS |
+ MMC_MODE_HC;
/*
* SSPCLK = 480 * 18 / 29 / 1 = 297.731 MHz
* 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;
}
projects / karo-tx-uboot.git / blobdiff