From 7e48a028a42c111ba38a90b86e5f57dace980fa0 Mon Sep 17 00:00:00 2001 From: Michael Walle Date: Wed, 23 Sep 2020 12:42:49 +0200 Subject: [PATCH] mmc: fsl_esdhc: simplify esdhc_setup_data() First, we need the waterlevel setting for PIO mode only. Secondy, both DMA setup code is identical for both directions, except for the data pointer. Thus, unify them. Signed-off-by: Michael Walle --- drivers/mmc/fsl_esdhc.c | 69 +++++++++++++++++++++++++---------------- 1 file changed, 42 insertions(+), 27 deletions(-) diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index 1b20b4360f..10a699f692 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -208,49 +208,64 @@ static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv, } #endif -static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc, - struct mmc_data *data) +#ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO +static void esdhc_setup_watermark_level(struct fsl_esdhc_priv *priv, + struct mmc_data *data) { - int timeout; - uint trans_bytes = data->blocksize * data->blocks; struct fsl_esdhc *regs = priv->esdhc_regs; - uint wml_value; - - wml_value = data->blocksize/4; + uint wml_value = data->blocksize / 4; if (data->flags & MMC_DATA_READ) { if (wml_value > WML_RD_WML_MAX) wml_value = WML_RD_WML_MAX_VAL; esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value); -#ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO - priv->dma_addr = dma_map_single(data->dest, trans_bytes, - mmc_get_dma_dir(data)); - if (upper_32_bits(priv->dma_addr)) - printf("Cannot use 64 bit addresses with SDMA\n"); - esdhc_write32(®s->dsaddr, lower_32_bits(priv->dma_addr)); -#endif } else { if (wml_value > WML_WR_WML_MAX) wml_value = WML_WR_WML_MAX_VAL; - if (!(esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL)) { - printf("Can not write to locked SD card.\n"); - return -EINVAL; - } - esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK, - wml_value << 16); -#ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO - priv->dma_addr = dma_map_single((void *)data->src, trans_bytes, - mmc_get_dma_dir(data)); - if (upper_32_bits(priv->dma_addr)) - printf("Cannot use 64 bit addresses with SDMA\n"); - esdhc_write32(®s->dsaddr, lower_32_bits(priv->dma_addr)); -#endif + wml_value << 16); } +} +#endif + +static void esdhc_setup_dma(struct fsl_esdhc_priv *priv, struct mmc_data *data) +{ + uint trans_bytes = data->blocksize * data->blocks; + struct fsl_esdhc *regs = priv->esdhc_regs; + void *buf; + + if (data->flags & MMC_DATA_WRITE) + buf = (void *)data->src; + else + buf = data->dest; + priv->dma_addr = dma_map_single(buf, trans_bytes, + mmc_get_dma_dir(data)); + if (upper_32_bits(priv->dma_addr)) + printf("Cannot use 64 bit addresses with SDMA\n"); + esdhc_write32(®s->dsaddr, lower_32_bits(priv->dma_addr)); esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize); +} + +static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc, + struct mmc_data *data) +{ + int timeout; + bool is_write = data->flags & MMC_DATA_WRITE; + struct fsl_esdhc *regs = priv->esdhc_regs; + + if (is_write && !(esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL)) { + printf("Can not write to locked SD card.\n"); + return -EINVAL; + } + +#ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO + esdhc_setup_watermark_level(priv, data); +#else + esdhc_setup_dma(priv, data); +#endif /* Calculate the timeout period for data transactions */ /* -- 2.39.5