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dm: serial: Support driver model in pl01x driver 

Add driver model support in this driver, using platform data provided by
the board.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
This commit is contained in:
Simon Glass 2014-09-22 17:30:58 -06:00
parent aed2fbef5e
commit 8a9cd5ad6f
1 changed files with 73 additions and 0 deletions
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73
drivers/serial/serial_pl01x.c
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@ -12,6 +12,7 @@
/* Simple U-Boot driver for the PrimeCell PL010/PL011 UARTs */
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <watchdog.h>
#include <asm/io.h>
@ -20,12 +21,15 @@
#include <linux/compiler.h>
#include "serial_pl01x_internal.h"
#ifndef CONFIG_DM_SERIAL
static volatile unsigned char *const port[] = CONFIG_PL01x_PORTS;
static enum pl01x_type pl01x_type __attribute__ ((section(".data")));
static struct pl01x_regs *base_regs __attribute__ ((section(".data")));
#define NUM_PORTS (sizeof(port)/sizeof(port[0]))
DECLARE_GLOBAL_DATA_PTR;
#endif
static int pl01x_putc(struct pl01x_regs *regs, char c)
{
@ -274,3 +278,72 @@ __weak struct serial_device *default_serial_console(void)
}
#endif /* nCONFIG_DM_SERIAL */
#ifdef CONFIG_DM_SERIAL
struct pl01x_priv {
struct pl01x_regs *regs;
enum pl01x_type type;
};
static int pl01x_serial_setbrg(struct udevice *dev, int baudrate)
{
struct pl01x_serial_platdata *plat = dev_get_platdata(dev);
struct pl01x_priv *priv = dev_get_priv(dev);
pl01x_generic_setbrg(priv->regs, priv->type, plat->clock, baudrate);
return 0;
}
static int pl01x_serial_probe(struct udevice *dev)
{
struct pl01x_serial_platdata *plat = dev_get_platdata(dev);
struct pl01x_priv *priv = dev_get_priv(dev);
priv->regs = (struct pl01x_regs *)plat->base;
priv->type = plat->type;
return pl01x_generic_serial_init(priv->regs, priv->type);
}
static int pl01x_serial_getc(struct udevice *dev)
{
struct pl01x_priv *priv = dev_get_priv(dev);
return pl01x_getc(priv->regs);
}
static int pl01x_serial_putc(struct udevice *dev, const char ch)
{
struct pl01x_priv *priv = dev_get_priv(dev);
return pl01x_putc(priv->regs, ch);
}
static int pl01x_serial_pending(struct udevice *dev, bool input)
{
struct pl01x_priv *priv = dev_get_priv(dev);
unsigned int fr = readl(&priv->regs->fr);
if (input)
return pl01x_tstc(priv->regs);
else
return fr & UART_PL01x_FR_TXFF ? 0 : 1;
}
static const struct dm_serial_ops pl01x_serial_ops = {
.putc = pl01x_serial_putc,
.pending = pl01x_serial_pending,
.getc = pl01x_serial_getc,
.setbrg = pl01x_serial_setbrg,
};
U_BOOT_DRIVER(serial_pl01x) = {
.name = "serial_pl01x",
.id = UCLASS_SERIAL,
.probe = pl01x_serial_probe,
.ops = &pl01x_serial_ops,
.flags = DM_FLAG_PRE_RELOC,
};
#endif