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authorShinya Kuribayashi <shinya.kuribayashi.px@renesas.com>2012-11-16 01:51:24 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-11-16 02:02:36 (GMT)
commit00cadbfd1e73fb9951da7d2358c39b561c017ea3 (patch)
tree3cbad8d7f74a7a56a329fbb947f622b9674ca46f /drivers/tty
parent8807ec6c707802cabadc0fe1b035ffefa27f1719 (diff)
downloadlinux-00cadbfd1e73fb9951da7d2358c39b561c017ea3.tar.xz
Partially revert "serial: sh-sci: console Runtime PM support"
This partially reverts commit 1ba7622094 (serial: sh-sci: console Runtime PM support, from Magnus Damm <damm@opensource.se>, 2011-08-03). The generic 'serial_core' can take care of console PM maintenance, so all (or at least the first thing) we have to do to get console PM work properly, is to implement uart_ops ->pm() operation in the sh-sci serial client driver. This patch partially reverts the commit above, but leaving sci_reset() change in place, because sci_reset() is already part of another commit (73c3d53f38 serial: sh-sci: Avoid FIFO clear for MCE toggle.). A revised version of console PM support follows next. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/sh-sci.c53
1 files changed, 1 insertions, 52 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index fcac136..602d078 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -99,12 +99,6 @@ struct sci_port {
#endif
struct notifier_block freq_transition;
-
-#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE
- unsigned short saved_smr;
- unsigned short saved_fcr;
- unsigned char saved_brr;
-#endif
};
/* Function prototypes */
@@ -2248,8 +2242,7 @@ static int __devinit serial_console_setup(struct console *co, char *options)
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
- sci_port_disable(sci_port);
-
+ /* TODO: disable clock */
return uart_set_options(port, co, baud, parity, bits, flow);
}
@@ -2292,46 +2285,6 @@ static int __devinit sci_probe_earlyprintk(struct platform_device *pdev)
return 0;
}
-#define uart_console(port) ((port)->cons->index == (port)->line)
-
-static int sci_runtime_suspend(struct device *dev)
-{
- struct sci_port *sci_port = dev_get_drvdata(dev);
- struct uart_port *port = &sci_port->port;
-
- if (uart_console(port)) {
- struct plat_sci_reg *reg;
-
- sci_port->saved_smr = serial_port_in(port, SCSMR);
- sci_port->saved_brr = serial_port_in(port, SCBRR);
-
- reg = sci_getreg(port, SCFCR);
- if (reg->size)
- sci_port->saved_fcr = serial_port_in(port, SCFCR);
- else
- sci_port->saved_fcr = 0;
- }
- return 0;
-}
-
-static int sci_runtime_resume(struct device *dev)
-{
- struct sci_port *sci_port = dev_get_drvdata(dev);
- struct uart_port *port = &sci_port->port;
-
- if (uart_console(port)) {
- sci_reset(port);
- serial_port_out(port, SCSMR, sci_port->saved_smr);
- serial_port_out(port, SCBRR, sci_port->saved_brr);
-
- if (sci_port->saved_fcr)
- serial_port_out(port, SCFCR, sci_port->saved_fcr);
-
- serial_port_out(port, SCSCR, sci_port->cfg->scscr);
- }
- return 0;
-}
-
#define SCI_CONSOLE (&serial_console)
#else
@@ -2341,8 +2294,6 @@ static inline int __devinit sci_probe_earlyprintk(struct platform_device *pdev)
}
#define SCI_CONSOLE NULL
-#define sci_runtime_suspend NULL
-#define sci_runtime_resume NULL
#endif /* CONFIG_SERIAL_SH_SCI_CONSOLE */
@@ -2460,8 +2411,6 @@ static int sci_resume(struct device *dev)
}
static const struct dev_pm_ops sci_dev_pm_ops = {
- .runtime_suspend = sci_runtime_suspend,
- .runtime_resume = sci_runtime_resume,
.suspend = sci_suspend,
.resume = sci_resume,
};