mmc: tmio: remove 'alignment_shift' from platform data

There is only one alignment shift for one type of Renesas SDHI. Encode
it directly in its DMA driver to reduce complexity and ease further
simplifications.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20221102125430.28466-3-wsa+renesas@sang-engineering.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/renesas_sdhi_core.c

@@ -1018,7 +1018,6 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 	dma_priv->filter = shdma_chan_filter;
 	dma_priv->enable = renesas_sdhi_enable_dma;
 
-	mmc_data->alignment_shift = 1; /* 2-byte alignment */
 	mmc_data->capabilities |= MMC_CAP_MMC_HIGHSPEED;
 
 	/*

drivers/mmc/host/renesas_sdhi_sys_dmac.c

@@ -160,7 +160,7 @@ static void renesas_sdhi_sys_dmac_start_dma_rx(struct tmio_mmc_host *host)
 	dma_cookie_t cookie;
 	int ret, i;
 	bool aligned = true, multiple = true;
-	unsigned int align = (1 << host->pdata->alignment_shift) - 1;
+	unsigned int align = 1;	/* 2-byte alignment */
 
 	for_each_sg(sg, sg_tmp, host->sg_len, i) {
 		if (sg_tmp->offset & align)
@@ -232,7 +232,7 @@ static void renesas_sdhi_sys_dmac_start_dma_tx(struct tmio_mmc_host *host)
 	dma_cookie_t cookie;
 	int ret, i;
 	bool aligned = true, multiple = true;
-	unsigned int align = (1 << host->pdata->alignment_shift) - 1;
+	unsigned int align = 1;	/* 2-byte alignment */
 
 	for_each_sg(sg, sg_tmp, host->sg_len, i) {
 		if (sg_tmp->offset & align)

include/linux/mfd/tmio.h

@@ -102,7 +102,6 @@ struct tmio_mmc_data {
 	unsigned long			capabilities2;
 	unsigned long			flags;
 	u32				ocr_mask;	/* available voltages */
-	int				alignment_shift;
 	dma_addr_t			dma_rx_offset;
 	unsigned int			max_blk_count;
 	unsigned short			max_segs;