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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/tty/serial/etraxfs-uart.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/tty/serial/etraxfs-uart.c')
-rw-r--r--kernel/drivers/tty/serial/etraxfs-uart.c61
1 files changed, 12 insertions, 49 deletions
diff --git a/kernel/drivers/tty/serial/etraxfs-uart.c b/kernel/drivers/tty/serial/etraxfs-uart.c
index a57301a6f..2f80bc7e4 100644
--- a/kernel/drivers/tty/serial/etraxfs-uart.c
+++ b/kernel/drivers/tty/serial/etraxfs-uart.c
@@ -10,6 +10,8 @@
#include <linux/of_address.h>
#include <hwregs/ser_defs.h>
+#include "serial_mctrl_gpio.h"
+
#define DRV_NAME "etraxfs-uart"
#define UART_NR CONFIG_ETRAX_SERIAL_PORTS
@@ -28,10 +30,7 @@ struct uart_cris_port {
void __iomem *regi_ser;
- struct gpio_desc *dtr_pin;
- struct gpio_desc *dsr_pin;
- struct gpio_desc *ri_pin;
- struct gpio_desc *cd_pin;
+ struct mctrl_gpios *gpios;
int write_ongoing;
};
@@ -112,17 +111,10 @@ cris_console_setup(struct console *co, char *options)
return 0;
}
-static struct tty_driver *cris_console_device(struct console *co, int *index)
-{
- struct uart_driver *p = co->data;
- *index = co->index;
- return p->tty_driver;
-}
-
static struct console cris_console = {
.name = "ttyS",
.write = cris_console_write,
- .device = cris_console_device,
+ .device = uart_console_device,
.setup = cris_console_setup,
.flags = CON_PRINTBUFFER,
.index = -1,
@@ -373,14 +365,6 @@ static void etraxfs_uart_stop_rx(struct uart_port *port)
REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
}
-static void etraxfs_uart_enable_ms(struct uart_port *port)
-{
-}
-
-static void check_modem_status(struct uart_cris_port *up)
-{
-}
-
static unsigned int etraxfs_uart_tx_empty(struct uart_port *port)
{
struct uart_cris_port *up = (struct uart_cris_port *)port;
@@ -404,21 +388,9 @@ static unsigned int etraxfs_uart_get_mctrl(struct uart_port *port)
ret = 0;
if (crisv32_serial_get_rts(up))
ret |= TIOCM_RTS;
- /* DTR is active low */
- if (up->dtr_pin && !gpiod_get_raw_value(up->dtr_pin))
- ret |= TIOCM_DTR;
- /* CD is active low */
- if (up->cd_pin && !gpiod_get_raw_value(up->cd_pin))
- ret |= TIOCM_CD;
- /* RI is active low */
- if (up->ri_pin && !gpiod_get_raw_value(up->ri_pin))
- ret |= TIOCM_RI;
- /* DSR is active low */
- if (up->dsr_pin && !gpiod_get_raw_value(up->dsr_pin))
- ret |= TIOCM_DSR;
if (crisv32_serial_get_cts(up))
ret |= TIOCM_CTS;
- return ret;
+ return mctrl_gpio_get(up->gpios, &ret);
}
static void etraxfs_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
@@ -426,15 +398,7 @@ static void etraxfs_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
struct uart_cris_port *up = (struct uart_cris_port *)port;
crisv32_serial_set_rts(up, mctrl & TIOCM_RTS ? 1 : 0, 0);
- /* DTR is active low */
- if (up->dtr_pin)
- gpiod_set_raw_value(up->dtr_pin, mctrl & TIOCM_DTR ? 0 : 1);
- /* RI is active low */
- if (up->ri_pin)
- gpiod_set_raw_value(up->ri_pin, mctrl & TIOCM_RNG ? 0 : 1);
- /* CD is active low */
- if (up->cd_pin)
- gpiod_set_raw_value(up->cd_pin, mctrl & TIOCM_CD ? 0 : 1);
+ mctrl_gpio_set(up->gpios, mctrl);
}
static void etraxfs_uart_break_ctl(struct uart_port *port, int break_state)
@@ -598,7 +562,6 @@ ser_interrupt(int irq, void *dev_id)
receive_chars_no_dma(up);
handled = 1;
}
- check_modem_status(up);
if (masked_intr.tr_rdy) {
transmit_chars_no_dma(up);
@@ -862,7 +825,6 @@ static const struct uart_ops etraxfs_uart_pops = {
.start_tx = etraxfs_uart_start_tx,
.send_xchar = etraxfs_uart_send_xchar,
.stop_rx = etraxfs_uart_stop_rx,
- .enable_ms = etraxfs_uart_enable_ms,
.break_ctl = etraxfs_uart_break_ctl,
.startup = etraxfs_uart_startup,
.shutdown = etraxfs_uart_shutdown,
@@ -930,11 +892,12 @@ static int etraxfs_uart_probe(struct platform_device *pdev)
up->irq = irq_of_parse_and_map(np, 0);
up->regi_ser = of_iomap(np, 0);
- up->dtr_pin = devm_gpiod_get_optional(&pdev->dev, "dtr");
- up->dsr_pin = devm_gpiod_get_optional(&pdev->dev, "dsr");
- up->ri_pin = devm_gpiod_get_optional(&pdev->dev, "ri");
- up->cd_pin = devm_gpiod_get_optional(&pdev->dev, "cd");
up->port.dev = &pdev->dev;
+
+ up->gpios = mctrl_gpio_init_noauto(&pdev->dev, 0);
+ if (IS_ERR(up->gpios))
+ return PTR_ERR(up->gpios);
+
cris_serial_port_init(&up->port, dev_id);
etraxfs_uart_ports[dev_id] = up;
@@ -950,7 +913,7 @@ static int etraxfs_uart_remove(struct platform_device *pdev)
port = platform_get_drvdata(pdev);
uart_remove_one_port(&etraxfs_uart_driver, port);
- etraxfs_uart_ports[pdev->id] = NULL;
+ etraxfs_uart_ports[port->line] = NULL;
return 0;
}