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mmc: sdhci: use FIELD_GET for preset value bit masks 

Use the FIELD_GET macro to get access to the register fields.
Delete the shift macros.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Link: https://lore.kernel.org/r/20200312110050.21732-1-yamada.masahiro@socionext.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Masahiro Yamada 2020-03-12 20:00:50 +09:00 committed by Ulf Hansson
parent fdd8eef4be
commit fa0910107a
2 changed files with 9 additions and 11 deletions
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10
drivers/mmc/host/sdhci.c
View File

@ -9,6 +9,7 @@
* - JMicron (hardware and technical support)
*/
#include <linux/bitfield.h>
#include <linux/delay.h>
#include <linux/dmaengine.h>
#include <linux/ktime.h>
@ -1766,10 +1767,9 @@ u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
pre_val = sdhci_get_preset_value(host);
div = (pre_val & SDHCI_PRESET_SDCLK_FREQ_MASK)
>> SDHCI_PRESET_SDCLK_FREQ_SHIFT;
div = FIELD_GET(SDHCI_PRESET_SDCLK_FREQ_MASK, pre_val);
if (host->clk_mul &&
(pre_val & SDHCI_PRESET_CLKGEN_SEL_MASK)) {
(pre_val & SDHCI_PRESET_CLKGEN_SEL)) {
clk = SDHCI_PROG_CLOCK_MODE;
real_div = div + 1;
clk_mul = host->clk_mul;
@ -2246,8 +2246,8 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
sdhci_enable_preset_value(host, true);
preset = sdhci_get_preset_value(host);
ios->drv_type = (preset & SDHCI_PRESET_DRV_MASK)
>> SDHCI_PRESET_DRV_SHIFT;
ios->drv_type = FIELD_GET(SDHCI_PRESET_DRV_MASK,
preset);
}
/* Re-enable SD Clock */

10
drivers/mmc/host/sdhci.h
View File

@ -9,6 +9,7 @@
#ifndef __SDHCI_HW_H
#define __SDHCI_HW_H
#include <linux/bits.h>
#include <linux/scatterlist.h>
#include <linux/compiler.h>
#include <linux/types.h>
@ -267,12 +268,9 @@
#define SDHCI_PRESET_FOR_SDR104 0x6C
#define SDHCI_PRESET_FOR_DDR50 0x6E
#define SDHCI_PRESET_FOR_HS400 0x74 /* Non-standard */
#define SDHCI_PRESET_DRV_MASK 0xC000
#define SDHCI_PRESET_DRV_SHIFT 14
#define SDHCI_PRESET_CLKGEN_SEL_MASK 0x400
#define SDHCI_PRESET_CLKGEN_SEL_SHIFT 10
#define SDHCI_PRESET_SDCLK_FREQ_MASK 0x3FF
#define SDHCI_PRESET_SDCLK_FREQ_SHIFT 0
#define SDHCI_PRESET_DRV_MASK GENMASK(15, 14)
#define SDHCI_PRESET_CLKGEN_SEL BIT(10)
#define SDHCI_PRESET_SDCLK_FREQ_MASK GENMASK(9, 0)
#define SDHCI_SLOT_INT_STATUS 0xFC