diff options
Diffstat (limited to 'drivers/tty/serial/qcom_geni_serial.c')
| -rw-r--r-- | drivers/tty/serial/qcom_geni_serial.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 3aa29d201f54..291649f02821 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -242,7 +242,7 @@ static void qcom_geni_serial_set_mctrl(struct uart_port *uport, if (mctrl & TIOCM_LOOP) port->loopback = RX_TX_CTS_RTS_SORTED; - if (!(mctrl & TIOCM_RTS)) + if (!(mctrl & TIOCM_RTS) && !uport->suspended) uart_manual_rfr = UART_MANUAL_RFR_EN | UART_RFR_NOT_READY; writel(uart_manual_rfr, uport->membase + SE_UART_MANUAL_RFR); } @@ -361,11 +361,16 @@ static int qcom_geni_serial_get_char(struct uart_port *uport) return NO_POLL_CHAR; if (word_cnt == 1 && (status & RX_LAST)) + /* + * NOTE: If RX_LAST_BYTE_VALID is 0 it needs to be + * treated as if it was BYTES_PER_FIFO_WORD. + */ private_data->poll_cached_bytes_cnt = (status & RX_LAST_BYTE_VALID_MSK) >> RX_LAST_BYTE_VALID_SHFT; - else - private_data->poll_cached_bytes_cnt = 4; + + if (private_data->poll_cached_bytes_cnt == 0) + private_data->poll_cached_bytes_cnt = BYTES_PER_FIFO_WORD; private_data->poll_cached_bytes = readl(uport->membase + SE_GENI_RX_FIFOn); @@ -995,7 +1000,7 @@ static void qcom_geni_serial_set_termios(struct uart_port *uport, sampling_rate = UART_OVERSAMPLING; /* Sampling rate is halved for IP versions >= 2.5 */ ver = geni_se_get_qup_hw_version(&port->se); - if (GENI_SE_VERSION_MAJOR(ver) >= 2 && GENI_SE_VERSION_MINOR(ver) >= 5) + if (ver >= QUP_SE_VERSION_2_5) sampling_rate /= 2; clk_rate = get_clk_div_rate(baud, sampling_rate, &clk_div); @@ -1098,11 +1103,11 @@ static unsigned int qcom_geni_serial_tx_empty(struct uart_port *uport) } #ifdef CONFIG_SERIAL_QCOM_GENI_CONSOLE -static int __init qcom_geni_console_setup(struct console *co, char *options) +static int qcom_geni_console_setup(struct console *co, char *options) { struct uart_port *uport; struct qcom_geni_serial_port *port; - int baud = 9600; + int baud = 115200; int bits = 8; int parity = 'n'; int flow = 'n'; @@ -1433,11 +1438,9 @@ static int qcom_geni_serial_probe(struct platform_device *pdev) return PTR_ERR(port->se.opp_table); /* OPP table is optional */ ret = dev_pm_opp_of_add_table(&pdev->dev); - if (!ret) { - port->se.has_opp_table = true; - } else if (ret != -ENODEV) { + if (ret && ret != -ENODEV) { dev_err(&pdev->dev, "invalid OPP table in device tree\n"); - return ret; + goto put_clkname; } port->private_data.drv = drv; @@ -1478,8 +1481,8 @@ static int qcom_geni_serial_probe(struct platform_device *pdev) return 0; err: - if (port->se.has_opp_table) - dev_pm_opp_of_remove_table(&pdev->dev); + dev_pm_opp_of_remove_table(&pdev->dev); +put_clkname: dev_pm_opp_put_clkname(port->se.opp_table); return ret; } @@ -1489,8 +1492,7 @@ static int qcom_geni_serial_remove(struct platform_device *pdev) struct qcom_geni_serial_port *port = platform_get_drvdata(pdev); struct uart_driver *drv = port->private_data.drv; - if (port->se.has_opp_table) - dev_pm_opp_of_remove_table(&pdev->dev); + dev_pm_opp_of_remove_table(&pdev->dev); dev_pm_opp_put_clkname(port->se.opp_table); dev_pm_clear_wake_irq(&pdev->dev); device_init_wakeup(&pdev->dev, false); |