From f131a4443ea468cd532410c271c229bb39caab08 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 3 Sep 2019 11:31:09 +0200
Subject: [PATCH] ARM: s3c24xx: move spi fiq handler into platform
The fiq handler needs access to some register definitions that
should not be used directly by device drivers.
Since this is closely related to the irqchip driver anyway,
move it into the same place.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[krzk: Add a header guard in include/linux/spi/s3c24xx-fiq.h, fix
SPDX comment style, update maintainer's entry]
Co-developed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200806182059.2431-23-krzk%40kernel.org
Acked-by: Mark Brown <broonie@kernel.org>
---
MAINTAINERS | 1 +
arch/arm/mach-s3c24xx/Makefile | 2 ++
arch/arm/mach-s3c24xx/irq-s3c24xx-fiq-exports.c | 9 +++++++++
.../arm/mach-s3c24xx/irq-s3c24xx-fiq.S | 2 +-
drivers/spi/Makefile | 1 -
drivers/spi/spi-s3c24xx.c | 7 +------
.../linux/spi/s3c24xx-fiq.h | 10 ++++++++++
7 files changed, 24 insertions(+), 8 deletions(-)
create mode 100644 arch/arm/mach-s3c24xx/irq-s3c24xx-fiq-exports.c
rename drivers/spi/spi-s3c24xx-fiq.S => arch/arm/mach-s3c24xx/irq-s3c24xx-fiq.S (98%)
rename drivers/spi/spi-s3c24xx-fiq.h => include/linux/spi/s3c24xx-fiq.h (66%)
diff --git a/MAINTAINERS b/MAINTAINERS
index 45906c58ff4ad..a14144691ca58 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15317,6 +15317,7 @@ S: Maintained
F: Documentation/devicetree/bindings/spi/spi-samsung.txt
F: drivers/spi/spi-s3c*
F: include/linux/platform_data/spi-s3c64xx.h
+F: include/linux/spi/s3c24xx-fiq.h
SAMSUNG SXGBE DRIVERS
M: Byungho An <bh74.an@samsung.com>
diff --git a/arch/arm/mach-s3c24xx/Makefile b/arch/arm/mach-s3c24xx/Makefile
index 3ad297bd6b4a3..b69eee24940bd 100644
--- a/arch/arm/mach-s3c24xx/Makefile
+++ b/arch/arm/mach-s3c24xx/Makefile
@@ -9,6 +9,8 @@
obj-y += common.o
obj-y += irq-s3c24xx.o
+obj-$(CONFIG_SPI_S3C24XX_FIQ) += irq-s3c24xx-fiq.o
+obj-$(CONFIG_SPI_S3C24XX_FIQ) += irq-s3c24xx-fiq-exports.o
obj-$(CONFIG_CPU_S3C2410) += s3c2410.o
obj-$(CONFIG_S3C2410_PLL) += pll-s3c2410.o
diff --git a/arch/arm/mach-s3c24xx/irq-s3c24xx-fiq-exports.c b/arch/arm/mach-s3c24xx/irq-s3c24xx-fiq-exports.c
new file mode 100644
index 0000000000000..84cf86376ded5
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/irq-s3c24xx-fiq-exports.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/stddef.h>
+#include <linux/export.h>
+#include <linux/spi/s3c24xx-fiq.h>
+
+EXPORT_SYMBOL(s3c24xx_spi_fiq_rx);
+EXPORT_SYMBOL(s3c24xx_spi_fiq_txrx);
+EXPORT_SYMBOL(s3c24xx_spi_fiq_tx);
diff --git a/drivers/spi/spi-s3c24xx-fiq.S b/arch/arm/mach-s3c24xx/irq-s3c24xx-fiq.S
similarity index 98%
rename from drivers/spi/spi-s3c24xx-fiq.S
rename to arch/arm/mach-s3c24xx/irq-s3c24xx-fiq.S
index 9d5f8f1e5e81f..2a84535a14fd7 100644
--- a/drivers/spi/spi-s3c24xx-fiq.S
+++ b/arch/arm/mach-s3c24xx/irq-s3c24xx-fiq.S
@@ -13,7 +13,7 @@
#include <mach/map.h>
#include <mach/regs-irq.h>
-#include "spi-s3c24xx-fiq.h"
+#include <linux/spi/s3c24xx-fiq.h>
#define S3C2410_SPTDAT (0x10)
#define S3C2410_SPRDAT (0x14)
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index cf955ea803cd3..eba6fb607aa2b 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -97,7 +97,6 @@ obj-$(CONFIG_SPI_RPCIF) += spi-rpc-if.o
obj-$(CONFIG_SPI_RSPI) += spi-rspi.o
obj-$(CONFIG_SPI_S3C24XX) += spi-s3c24xx-hw.o
spi-s3c24xx-hw-y := spi-s3c24xx.o
-spi-s3c24xx-hw-$(CONFIG_SPI_S3C24XX_FIQ) += spi-s3c24xx-fiq.o
obj-$(CONFIG_SPI_S3C64XX) += spi-s3c64xx.o
obj-$(CONFIG_SPI_SC18IS602) += spi-sc18is602.o
obj-$(CONFIG_SPI_SH) += spi-sh.o
diff --git a/drivers/spi/spi-s3c24xx.c b/drivers/spi/spi-s3c24xx.c
index 0691248c7c0d9..6ac6f0b6f2375 100644
--- a/drivers/spi/spi-s3c24xx.c
+++ b/drivers/spi/spi-s3c24xx.c
@@ -19,12 +19,12 @@
#include <linux/spi/spi.h>
#include <linux/spi/spi_bitbang.h>
#include <linux/spi/s3c24xx.h>
+#include <linux/spi/s3c24xx-fiq.h>
#include <linux/module.h>
#include <asm/fiq.h>
#include "spi-s3c24xx-regs.h"
-#include "spi-s3c24xx-fiq.h"
/**
* s3c24xx_spi_devstate - per device data
@@ -229,10 +229,6 @@ struct spi_fiq_code {
u8 data[];
};
-extern struct spi_fiq_code s3c24xx_spi_fiq_txrx;
-extern struct spi_fiq_code s3c24xx_spi_fiq_tx;
-extern struct spi_fiq_code s3c24xx_spi_fiq_rx;
-
/**
* ack_bit - turn IRQ into IRQ acknowledgement bit
* @irq: The interrupt number
@@ -282,7 +278,6 @@ static void s3c24xx_spi_tryfiq(struct s3c24xx_spi *hw)
regs.uregs[fiq_rrx] = (long)hw->rx;
regs.uregs[fiq_rtx] = (long)hw->tx + 1;
regs.uregs[fiq_rcount] = hw->len - 1;
- regs.uregs[fiq_rirq] = (long)S3C24XX_VA_IRQ;
set_fiq_regs(®s);
diff --git a/drivers/spi/spi-s3c24xx-fiq.h b/include/linux/spi/s3c24xx-fiq.h
similarity index 66%
rename from drivers/spi/spi-s3c24xx-fiq.h
rename to include/linux/spi/s3c24xx-fiq.h
index 7786b0ea56ec8..d2842ac1de274 100644
--- a/drivers/spi/spi-s3c24xx-fiq.h
+++ b/include/linux/spi/s3c24xx-fiq.h
@@ -7,11 +7,19 @@
* S3C24XX SPI - FIQ pseudo-DMA transfer support
*/
+#ifndef __LINUX_SPI_S3C24XX_FIQ_H
+#define __LINUX_SPI_S3C24XX_FIQ_H __FILE__
+
/* We have R8 through R13 to play with */
#ifdef __ASSEMBLY__
#define __REG_NR(x) r##x
#else
+
+extern struct spi_fiq_code s3c24xx_spi_fiq_txrx;
+extern struct spi_fiq_code s3c24xx_spi_fiq_tx;
+extern struct spi_fiq_code s3c24xx_spi_fiq_rx;
+
#define __REG_NR(x) (x)
#endif
@@ -21,3 +29,5 @@
#define fiq_rtx __REG_NR(11)
#define fiq_rcount __REG_NR(12)
#define fiq_rirq __REG_NR(13)
+
+#endif /* __LINUX_SPI_S3C24XX_FIQ_H */
--
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