diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/imx.c | 38 |
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); |