diff options
Diffstat (limited to 'drivers/tty/serial/qcom_geni_serial.c')
| -rw-r--r-- | drivers/tty/serial/qcom_geni_serial.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index daaf2a64e7f1..b8aa4c1293ba 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -11,7 +11,6 @@ #include <linux/irq.h> #include <linux/module.h> #include <linux/of.h> -#include <linux/of_device.h> #include <linux/pm_opp.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> @@ -126,6 +125,7 @@ struct qcom_geni_serial_port { dma_addr_t rx_dma_addr; bool setup; unsigned int baud; + unsigned long clk_rate; void *rx_buf; u32 loopback; bool brk; @@ -591,7 +591,6 @@ static void qcom_geni_serial_stop_tx_dma(struct uart_port *uport) { struct qcom_geni_serial_port *port = to_dev_port(uport); bool done; - u32 m_irq_en; if (!qcom_geni_serial_main_active(uport)) return; @@ -603,12 +602,10 @@ static void qcom_geni_serial_stop_tx_dma(struct uart_port *uport) port->tx_remaining = 0; } - m_irq_en = readl(uport->membase + SE_GENI_M_IRQ_EN); - writel(m_irq_en, uport->membase + SE_GENI_M_IRQ_EN); geni_se_cancel_m_cmd(&port->se); - done = qcom_geni_serial_poll_bit(uport, SE_GENI_S_IRQ_STATUS, - S_CMD_CANCEL_EN, true); + done = qcom_geni_serial_poll_bit(uport, SE_GENI_M_IRQ_STATUS, + M_CMD_CANCEL_EN, true); if (!done) { geni_se_abort_m_cmd(&port->se); done = qcom_geni_serial_poll_bit(uport, SE_GENI_M_IRQ_STATUS, @@ -1245,10 +1242,11 @@ static void qcom_geni_serial_set_termios(struct uart_port *uport, goto out_restart_rx; } - dev_dbg(port->se.dev, "desired_rate-%u, clk_rate-%lu, clk_div-%u\n", + dev_dbg(port->se.dev, "desired_rate = %u, clk_rate = %lu, clk_div = %u\n", baud * sampling_rate, clk_rate, clk_div); uport->uartclk = clk_rate; + port->clk_rate = clk_rate; dev_pm_opp_set_rate(uport->dev, clk_rate); ser_clk_cfg = SER_CLK_EN; ser_clk_cfg |= clk_div << CLK_DIV_SHFT; @@ -1513,10 +1511,13 @@ static void qcom_geni_serial_pm(struct uart_port *uport, if (new_state == UART_PM_STATE_ON && old_state == UART_PM_STATE_OFF) { geni_icc_enable(&port->se); + if (port->clk_rate) + dev_pm_opp_set_rate(uport->dev, port->clk_rate); geni_se_resources_on(&port->se); } else if (new_state == UART_PM_STATE_OFF && old_state == UART_PM_STATE_ON) { geni_se_resources_off(&port->se); + dev_pm_opp_set_rate(uport->dev, 0); geni_icc_disable(&port->se); } } @@ -1750,7 +1751,7 @@ static int qcom_geni_serial_sys_hib_resume(struct device *dev) private_data = uport->private_data; if (uart_console(uport)) { - geni_icc_set_tag(&port->se, 0x7); + geni_icc_set_tag(&port->se, QCOM_ICC_TAG_ALWAYS); geni_icc_set_bw(&port->se); ret = uart_resume_port(private_data->drv, uport); /* |