From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: linux-mmc@vger.kernel.org,
Adrian Hunter <adrian.hunter@intel.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH] mmc: sdhci: use FIELD_GET for preset value bit masks
Date: Thu, 12 Mar 2020 20:00:50 +0900 [thread overview]
Message-ID: <20200312110050.21732-1-yamada.masahiro@socionext.com> (raw)
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>
---
drivers/mmc/host/sdhci.c | 10 +++++-----
drivers/mmc/host/sdhci.h | 10 ++++------
2 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 63db84481dff..aec6692615c8 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -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;
@@ -2227,8 +2227,8 @@ 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 */
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index a6a3ddcf97e7..abdcefee24cb 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -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
--
2.17.1
next reply other threads:[~2020-03-12 11:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-12 11:00 Masahiro Yamada [this message]
2020-03-17 11:58 ` [PATCH] mmc: sdhci: use FIELD_GET for preset value bit masks Ulf Hansson
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