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path: root/drivers/tty
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Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/imx.c38
1 files changed, 23 insertions, 15 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index e7feceeebc2f..267ec6da5af2 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -204,7 +204,8 @@ struct imx_port {
unsigned int irda_inv_rx:1;
unsigned int irda_inv_tx:1;
unsigned short trcv_delay; /* transceiver delay */
- struct clk *clk;
+ struct clk *clk_ipg;
+ struct clk *clk_per;
struct imx_uart_data *devdata;
};
@@ -672,7 +673,7 @@ static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode)
* RFDIV is set such way to satisfy requested uartclk value
*/
val = TXTL << 10 | RXTL;
- ufcr_rfdiv = (clk_get_rate(sport->clk) + sport->port.uartclk / 2)
+ ufcr_rfdiv = (clk_get_rate(sport->clk_per) + sport->port.uartclk / 2)
/ sport->port.uartclk;
if(!ufcr_rfdiv)
@@ -1285,7 +1286,7 @@ imx_console_get_options(struct imx_port *sport, int *baud,
else
ucfr_rfdiv = 6 - ucfr_rfdiv;
- uartclk = clk_get_rate(sport->clk);
+ uartclk = clk_get_rate(sport->clk_per);
uartclk /= ucfr_rfdiv;
{ /*
@@ -1503,14 +1504,22 @@ static int serial_imx_probe(struct platform_device *pdev)
sport->timer.function = imx_timeout;
sport->timer.data = (unsigned long)sport;
- sport->clk = clk_get(&pdev->dev, "uart");
- if (IS_ERR(sport->clk)) {
- ret = PTR_ERR(sport->clk);
+ sport->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
+ if (IS_ERR(sport->clk_ipg)) {
+ ret = PTR_ERR(sport->clk_ipg);
goto unmap;
}
- clk_prepare_enable(sport->clk);
- sport->port.uartclk = clk_get_rate(sport->clk);
+ sport->clk_per = devm_clk_get(&pdev->dev, "per");
+ if (IS_ERR(sport->clk_per)) {
+ ret = PTR_ERR(sport->clk_per);
+ goto unmap;
+ }
+
+ clk_prepare_enable(sport->clk_per);
+ clk_prepare_enable(sport->clk_ipg);
+
+ sport->port.uartclk = clk_get_rate(sport->clk_per);
imx_ports[sport->port.line] = sport;
@@ -1531,8 +1540,8 @@ deinit:
if (pdata && pdata->exit)
pdata->exit(pdev);
clkput:
- clk_disable_unprepare(sport->clk);
- clk_put(sport->clk);
+ clk_disable_unprepare(sport->clk_per);
+ clk_disable_unprepare(sport->clk_ipg);
unmap:
iounmap(sport->port.membase);
free:
@@ -1550,11 +1559,10 @@ static int serial_imx_remove(struct platform_device *pdev)
platform_set_drvdata(pdev, NULL);
- if (sport) {
- uart_remove_one_port(&imx_reg, &sport->port);
- clk_disable_unprepare(sport->clk);
- clk_put(sport->clk);
- }
+ uart_remove_one_port(&imx_reg, &sport->port);
+
+ clk_disable_unprepare(sport->clk_per);
+ clk_disable_unprepare(sport->clk_ipg);
if (pdata && pdata->exit)
pdata->exit(pdev);