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ramips: remove rt2880 spi lock and clean bit operation

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Signed-off-by: Michael Lee <igvtee@gmail.com>

SVN-Revision: 47574
This commit is contained in:
John Crispin 2015-11-22 11:48:21 +00:00
parent 13fbd6fea7
commit 702c480dfe
1 changed files with 5 additions and 18 deletions
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23
target/linux/ramips/patches-3.18/0050-SPI-ralink-add-Ralink-SoC-spi-driver.patch
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@ -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);
+