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Partially revert "serial: sh-sci: console Runtime PM support"

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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>
This commit is contained in:
Shinya Kuribayashi 2012-11-16 10:51:24 +09:00 committed by Greg Kroah-Hartman
parent 8807ec6c70
commit 00cadbfd1e
1 changed files with 1 additions and 52 deletions
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53
drivers/tty/serial/sh-sci.c
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@ -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,
};