diff options
| author | Ryan Case <ryandcase@chromium.org> | 2019-01-08 04:58:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-08 18:57:47 +0300 |
| commit | a85fb9ce1fab34a3216fd4d769fede643dbc68d4 (patch) | |
| tree | ee98ee0a376ca9ac8c166086d03e67e5231a411f /drivers/tty/serial/qcom_geni_serial.c | |
| parent | 9e06d55f7b856bfaf82036b50072600b21e52d20 (diff) | |
| download | linux-a85fb9ce1fab34a3216fd4d769fede643dbc68d4.tar.xz | |
tty: serial: qcom_geni_serial: Remove set_rfr_wm() and related variables
The variables of tx_wm and rx_wm were set to the same define value in
all cases, never updated, and the define was sometimes used
interchangably. Remove the variables/function and use the fixed value.
Signed-off-by: Ryan Case <ryandcase@chromium.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/qcom_geni_serial.c')
| -rw-r--r-- | drivers/tty/serial/qcom_geni_serial.c | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 15c409d226c1..b8416980cb02 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -89,7 +89,7 @@ #define DEF_FIFO_DEPTH_WORDS 16 #define DEF_TX_WM 2 #define DEF_FIFO_WIDTH_BITS 32 -#define UART_CONSOLE_RX_WM 2 +#define UART_RX_WM 2 #define MAX_LOOPBACK_CFG 3 #ifdef CONFIG_CONSOLE_POLL @@ -105,9 +105,6 @@ struct qcom_geni_serial_port { u32 tx_fifo_depth; u32 tx_fifo_width; u32 rx_fifo_depth; - u32 tx_wm; - u32 rx_wm; - u32 rx_rfr; enum geni_se_xfer_mode xfer_mode; bool setup; int (*handle_rx)(struct uart_port *uport, u32 bytes, bool drop); @@ -363,9 +360,7 @@ static int qcom_geni_serial_get_char(struct uart_port *uport) static void qcom_geni_serial_poll_put_char(struct uart_port *uport, unsigned char c) { - struct qcom_geni_serial_port *port = to_dev_port(uport, uport); - - writel(port->tx_wm, uport->membase + SE_GENI_TX_WATERMARK_REG); + writel(DEF_TX_WM, uport->membase + SE_GENI_TX_WATERMARK_REG); qcom_geni_serial_setup_tx(uport, 1); WARN_ON(!qcom_geni_serial_poll_bit(uport, SE_GENI_M_IRQ_STATUS, M_TX_FIFO_WATERMARK_EN, true)); @@ -574,7 +569,7 @@ static void qcom_geni_serial_start_tx(struct uart_port *uport) irq_en = readl(uport->membase + SE_GENI_M_IRQ_EN); irq_en |= M_TX_FIFO_WATERMARK_EN | M_CMD_DONE_EN; - writel(port->tx_wm, uport->membase + + writel(DEF_TX_WM, uport->membase + SE_GENI_TX_WATERMARK_REG); writel(irq_en, uport->membase + SE_GENI_M_IRQ_EN); } @@ -846,17 +841,6 @@ static void get_tx_fifo_size(struct qcom_geni_serial_port *port) (port->tx_fifo_depth * port->tx_fifo_width) / BITS_PER_BYTE; } -static void set_rfr_wm(struct qcom_geni_serial_port *port) -{ - /* - * Set RFR (Flow off) to FIFO_DEPTH - 2. - * RX WM level at 10% RX_FIFO_DEPTH. - * TX WM level at 10% TX_FIFO_DEPTH. - */ - port->rx_rfr = port->rx_fifo_depth - 2; - port->rx_wm = UART_CONSOLE_RX_WM; - port->tx_wm = DEF_TX_WM; -} static void qcom_geni_serial_shutdown(struct uart_port *uport) { @@ -897,7 +881,6 @@ static int qcom_geni_serial_port_setup(struct uart_port *uport) get_tx_fifo_size(port); - set_rfr_wm(port); writel(rxstale, uport->membase + SE_UART_RX_STALE_CNT); /* * Make an unconditional cancel on the main sequencer to reset @@ -910,7 +893,7 @@ static int qcom_geni_serial_port_setup(struct uart_port *uport) false, true, false); geni_se_config_packing(&port->se, BITS_PER_BYTE, port->rx_bytes_pw, false, false, true); - geni_se_init(&port->se, port->rx_wm, port->rx_rfr); + geni_se_init(&port->se, UART_RX_WM, port->rx_fifo_depth - 2); geni_se_select_mode(&port->se, port->xfer_mode); if (!uart_console(uport)) { port->rx_fifo = devm_kcalloc(uport->dev, |