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authorDaniel Vetter <daniel.vetter@ffwll.ch>2015-08-14 18:10:35 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-08-14 18:11:30 +0200
commit622147fdad5425f6f572f84ce709303e5e0500b7 (patch)
tree9b5adde02ed4481db2dc5011a2c9447c8cac12eb /drivers/tty/serial/sc16is7xx.c
parent5a2376d1360bfc9ebf3b554dd8db1922d42cee4b (diff)
parentd2944cf21305c754fa8b2d6c1eea05ad5dad7944 (diff)
downloadtalos-op-linux-622147fdad5425f6f572f84ce709303e5e0500b7.tar.gz
talos-op-linux-622147fdad5425f6f572f84ce709303e5e0500b7.zip
Merge tag 'drm-intel-fixes-2015-08-14' into drm-intel-next-fixes
Backmerge drm-intel-fixes because a bunch of atomic patch backporting we had to do lead to horrible conflicts. Conflicts: drivers/gpu/drm/drm_crtc.c Just a bit of context conflict between -next and -fixes. drivers/gpu/drm/i915/intel_atomic.c drivers/gpu/drm/i915/intel_display.c Atomic conflicts, always pick the code from -next. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'drivers/tty/serial/sc16is7xx.c')
-rw-r--r--drivers/tty/serial/sc16is7xx.c30
1 files changed, 23 insertions, 7 deletions
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 9e6576004a42..5ccc698cbbfa 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -354,6 +354,26 @@ static void sc16is7xx_port_write(struct uart_port *port, u8 reg, u8 val)
(reg << SC16IS7XX_REG_SHIFT) | port->line, val);
}
+static void sc16is7xx_fifo_read(struct uart_port *port, unsigned int rxlen)
+{
+ struct sc16is7xx_port *s = dev_get_drvdata(port->dev);
+ u8 addr = (SC16IS7XX_RHR_REG << SC16IS7XX_REG_SHIFT) | port->line;
+
+ regcache_cache_bypass(s->regmap, true);
+ regmap_raw_read(s->regmap, addr, s->buf, rxlen);
+ regcache_cache_bypass(s->regmap, false);
+}
+
+static void sc16is7xx_fifo_write(struct uart_port *port, u8 to_send)
+{
+ struct sc16is7xx_port *s = dev_get_drvdata(port->dev);
+ u8 addr = (SC16IS7XX_THR_REG << SC16IS7XX_REG_SHIFT) | port->line;
+
+ regcache_cache_bypass(s->regmap, true);
+ regmap_raw_write(s->regmap, addr, s->buf, to_send);
+ regcache_cache_bypass(s->regmap, false);
+}
+
static void sc16is7xx_port_update(struct uart_port *port, u8 reg,
u8 mask, u8 val)
{
@@ -508,10 +528,7 @@ static void sc16is7xx_handle_rx(struct uart_port *port, unsigned int rxlen,
s->buf[0] = sc16is7xx_port_read(port, SC16IS7XX_RHR_REG);
bytes_read = 1;
} else {
- regcache_cache_bypass(s->regmap, true);
- regmap_raw_read(s->regmap, SC16IS7XX_RHR_REG,
- s->buf, rxlen);
- regcache_cache_bypass(s->regmap, false);
+ sc16is7xx_fifo_read(port, rxlen);
bytes_read = rxlen;
}
@@ -591,9 +608,8 @@ static void sc16is7xx_handle_tx(struct uart_port *port)
s->buf[i] = xmit->buf[xmit->tail];
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
}
- regcache_cache_bypass(s->regmap, true);
- regmap_raw_write(s->regmap, SC16IS7XX_THR_REG, s->buf, to_send);
- regcache_cache_bypass(s->regmap, false);
+
+ sc16is7xx_fifo_write(port, to_send);
}
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
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