tty: serial: amba-pl011: revise to use amba_rev macro
This patch replaces the ugly bit-operations with the convenient
amba_rev macro from the get_fifosize_arm function. The type of
get_fifosize member function is also slightly changed to take
a pointer to the amba_device.
Signed-off-by: Jongsung Kim <neidhard.kim@lge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 8ab70a6..85cfe11 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -79,13 +79,12 @@
bool dma_threshold;
bool cts_event_workaround;
- unsigned int (*get_fifosize)(unsigned int periphid);
+ unsigned int (*get_fifosize)(struct amba_device *dev);
};
-static unsigned int get_fifosize_arm(unsigned int periphid)
+static unsigned int get_fifosize_arm(struct amba_device *dev)
{
- unsigned int rev = (periphid >> 20) & 0xf;
- return rev < 3 ? 16 : 32;
+ return amba_rev(dev) < 3 ? 16 : 32;
}
static struct vendor_data vendor_arm = {
@@ -98,7 +97,7 @@
.get_fifosize = get_fifosize_arm,
};
-static unsigned int get_fifosize_st(unsigned int periphid)
+static unsigned int get_fifosize_st(struct amba_device *dev)
{
return 64;
}
@@ -2157,7 +2156,7 @@
uap->lcrh_rx = vendor->lcrh_rx;
uap->lcrh_tx = vendor->lcrh_tx;
uap->old_cr = 0;
- uap->fifosize = vendor->get_fifosize(dev->periphid);
+ uap->fifosize = vendor->get_fifosize(dev);
uap->port.dev = &dev->dev;
uap->port.mapbase = dev->res.start;
uap->port.membase = base;