diff options
| author | Marek Vasut <marex@denx.de> | 2013-01-22 15:01:04 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2013-01-28 11:43:01 +0100 |
| commit | e5b380ac68c86ec8c579421658152b1a90828c17 (patch) | |
| tree | e5ed8e401dc2623da180b0694ff26ace4096183a /drivers | |
| parent | 90bc2bf29780c2d238bb0c898d3a6cc6ec73922a (diff) | |
mxs: mmc: Fix the MMC driver for MX23
The MX23 has different layout of DMA channels. Fix the MMC
driver to support MX23.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/mxsmmc.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/mmc/mxsmmc.c b/drivers/mmc/mxsmmc.c index 023dbd5bc24..a72f66cc7aa 100644 --- a/drivers/mmc/mxsmmc.c +++ b/drivers/mmc/mxsmmc.c @@ -53,6 +53,12 @@ struct mxsmmc_priv { struct mxs_dma_desc *desc; }; +#if defined(CONFIG_MX23) +static const unsigned int mxsmmc_id_offset = 1; +#elif defined(CONFIG_MX28) +static const unsigned int mxsmmc_id_offset = 0; +#endif + #define MXSMMC_MAX_TIMEOUT 10000 #define MXSMMC_SMALL_TRANSFER 512 @@ -131,7 +137,7 @@ static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data) priv->desc->cmd.data |= MXS_DMA_DESC_IRQ | MXS_DMA_DESC_DEC_SEM | (data_count << MXS_DMA_DESC_BYTES_OFFSET); - dmach = MXS_DMA_CHANNEL_AHB_APBH_SSP0 + priv->id; + dmach = MXS_DMA_CHANNEL_AHB_APBH_SSP0 + priv->id + mxsmmc_id_offset; mxs_dma_desc_append(dmach, priv->desc); if (mxs_dma_go(dmach)) { bounce_buffer_stop(&bbstate); @@ -222,14 +228,25 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) } 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 */ @@ -401,7 +418,7 @@ int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int)) return -ENOMEM; } - ret = mxs_dma_init_channel(id); + ret = mxs_dma_init_channel(id + mxsmmc_id_offset); if (ret) return ret; |