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authorJohn Crispin <john@openwrt.org>2015-11-22 11:48:21 +0000
committerJohn Crispin <john@openwrt.org>2015-11-22 11:48:21 +0000
commit702c480dfe557087a1d4c534036fee4d59677f38 (patch)
treea2331065eeb5a5a6d8535e2430f27986bfaed3bc
parent13fbd6fea7201df1c6a3bc86ae53e6b10124bbee (diff)
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ramips: remove rt2880 spi lock and clean bit operation
Signed-off-by: Michael Lee <igvtee@gmail.com> SVN-Revision: 47574
-rw-r--r--target/linux/ramips/patches-3.18/0050-SPI-ralink-add-Ralink-SoC-spi-driver.patch23
1 files changed, 5 insertions, 18 deletions
diff --git a/target/linux/ramips/patches-3.18/0050-SPI-ralink-add-Ralink-SoC-spi-driver.patch b/target/linux/ramips/patches-3.18/0050-SPI-ralink-add-Ralink-SoC-spi-driver.patch
index ca04a17018..d6a462c586 100644
--- a/target/linux/ramips/patches-3.18/0050-SPI-ralink-add-Ralink-SoC-spi-driver.patch
+++ b/target/linux/ramips/patches-3.18/0050-SPI-ralink-add-Ralink-SoC-spi-driver.patch
@@ -41,7 +41,7 @@ Acked-by: John Crispin <blogic@openwrt.org>
spi-s3c24xx-hw-$(CONFIG_SPI_S3C24XX_FIQ) += spi-s3c24xx-fiq.o
--- /dev/null
+++ b/drivers/spi/spi-rt2880.c
-@@ -0,0 +1,493 @@
+@@ -0,0 +1,480 @@
+/*
+ * spi-rt2880.c -- Ralink RT288x/RT305x SPI controller driver
+ *
@@ -174,7 +174,6 @@ Acked-by: John Crispin <blogic@openwrt.org>
+ unsigned int sys_freq;
+ unsigned int speed;
+ struct clk *clk;
-+ spinlock_t lock;
+};
+
+static inline struct rt2880_spi *spidev_to_rt2880_spi(struct spi_device *spi)
@@ -187,7 +186,8 @@ Acked-by: John Crispin <blogic@openwrt.org>
+ return ioread32(rs->base + reg);
+}
+
-+static inline void rt2880_spi_write(struct rt2880_spi *rs, u32 reg, u32 val)
++static inline void rt2880_spi_write(struct rt2880_spi *rs, u32 reg,
++ const u32 val)
+{
+ iowrite32(val, rs->base + reg);
+}
@@ -195,27 +195,15 @@ Acked-by: John Crispin <blogic@openwrt.org>
+static inline void rt2880_spi_setbits(struct rt2880_spi *rs, u32 reg, u32 mask)
+{
+ void __iomem *addr = rs->base + reg;
-+ unsigned long flags;
-+ u32 val;
+
-+ spin_lock_irqsave(&rs->lock, flags);
-+ val = ioread32(addr);
-+ val |= mask;
-+ iowrite32(val, addr);
-+ spin_unlock_irqrestore(&rs->lock, flags);
++ iowrite32((ioread32(addr) | mask), addr);
+}
+
+static inline void rt2880_spi_clrbits(struct rt2880_spi *rs, u32 reg, u32 mask)
+{
+ void __iomem *addr = rs->base + reg;
-+ unsigned long flags;
-+ u32 val;
+
-+ spin_lock_irqsave(&rs->lock, flags);
-+ val = ioread32(addr);
-+ val &= ~mask;
-+ iowrite32(val, addr);
-+ spin_unlock_irqrestore(&rs->lock, flags);
++ iowrite32((ioread32(addr) & ~mask), addr);
+}
+
+static int rt2880_spi_baudrate_set(struct spi_device *spi, unsigned int speed)
@@ -488,7 +476,6 @@ Acked-by: John Crispin <blogic@openwrt.org>
+ rs->master = master;
+ rs->sys_freq = clk_get_rate(rs->clk);
+ dev_dbg(&pdev->dev, "sys_freq: %u\n", rs->sys_freq);
-+ spin_lock_irqsave(&rs->lock, flags);
+
+ device_reset(&pdev->dev);
+