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mmc: sdhci: reduce code duplication for aligned buffer

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The same code is run for both SDHCI_QUIRK_32BIT_DMA_ADDR and
define(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER).

Unify the code.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
This commit is contained in:
Masahiro Yamada 2020-02-14 16:40:22 +09:00 committed by Peng Fan
parent c8cc18b7a7
commit f5df6aa1e6
2 changed files with 10 additions and 14 deletions
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22
drivers/mmc/sdhci.c
View File

@ -140,27 +140,16 @@ static void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data,
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
if (host->flags & USE_SDMA) {
if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
(host->start_addr & 0x7) != 0x0) {
if (host->force_align_buffer ||
(host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR &&
(host->start_addr & 0x7) != 0x0)) {
*is_aligned = 0;
host->start_addr = (unsigned long)host->align_buffer;
if (data->flags != MMC_DATA_READ)
memcpy(host->align_buffer, data->src,
trans_bytes);
}
#if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER)
/*
* Always use this bounce-buffer when
* CONFIG_FIXED_SDHCI_ALIGNED_BUFFER is defined
*/
*is_aligned = 0;
host->start_addr = (unsigned long)host->align_buffer;
if (data->flags != MMC_DATA_READ)
memcpy(host->align_buffer, data->src, trans_bytes);
#endif
sdhci_writel(host, host->start_addr, SDHCI_DMA_ADDRESS);
} else if (host->flags & (USE_ADMA | USE_ADMA64)) {
sdhci_prepare_adma_table(host, data);
@ -627,6 +616,11 @@ static int sdhci_init(struct mmc *mmc)
#if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER)
host->align_buffer = (void *)CONFIG_FIXED_SDHCI_ALIGNED_BUFFER;
/*
* Always use this bounce-buffer when CONFIG_FIXED_SDHCI_ALIGNED_BUFFER
* is defined.
*/
host->force_align_buffer = true;
#else
if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) {
host->align_buffer = memalign(8, 512 * 1024);

2
include/sdhci.h
View File

@ -9,6 +9,7 @@
#ifndef __SDHCI_HW_H
#define __SDHCI_HW_H
#include <linux/types.h>
#include <asm/io.h>
#include <mmc.h>
#include <asm/gpio.h>
@ -322,6 +323,7 @@ struct sdhci_host {
struct mmc_config cfg;
void *align_buffer;
bool force_align_buffer;
dma_addr_t start_addr;
int flags;
#define USE_SDMA (0x1 << 0)