diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/ramips/patches-3.18/0050-SPI-ralink-add-Ralink-SoC-spi-driver.patch | 23 |
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); + |