/*
* Loads the SRAM contents.
* Context: user.
*/
static void sram_load(struct exi_device *dev)
{
struct gcnrtc_drvdata *drvdata = exi_get_drvdata(dev);
struct gcn_sram *sram = &drvdata->sram;
u32 req;
exi_dev_take(dev);
/* select the SRAM device */
exi_dev_select(dev);
/* send the appropriate command */
req = 0x20000100;
exi_dev_write(dev, &req, sizeof(req));
/* read the SRAM data */
exi_dev_read(dev, sram, sizeof(*sram));
/* deselect the SRAM device */
exi_dev_deselect(dev);
exi_dev_give(dev);
return;
}
/*
* Gets the hardware clock date and time.
* Context: user.
*/
static unsigned long rtc_get_time(struct exi_device *dev)
{
unsigned long a = 0;
/* select the RTC device */
if (exi_dev_select(dev) == 0) {
/* send the appropriate command */
a = 0x20000000;
exi_dev_write(dev, &a, sizeof(a));
/* read the time and date value */
exi_dev_read(dev, &a, sizeof(a));
/* deselect the RTC device */
exi_dev_deselect(dev);
}
return a;
}
/*
* Loads the SRAM contents.
* Context: user.
*/
static void sram_load(struct exi_device *dev)
{
struct rtc_private *priv = exi_get_drvdata(dev);
struct gcn_sram *sram = &priv->sram;
u32 req;
/* select the SRAM device */
if (exi_dev_select(dev) == 0) {
/* send the appropriate command */
req = 0x20000100;
exi_dev_write(dev, &req, sizeof(req));
/* read the SRAM data */
exi_dev_read(dev, sram, sizeof(*sram));
/* deselect the SRAM device */
exi_dev_deselect(dev);
}
return;
}
/*
* Gets the hardware clock date and time.
* Context: user.
*/
static unsigned long gcnrtc_read_time(struct exi_device *dev)
{
unsigned long a = 0;
exi_dev_take(dev);
/* select the SRAM device */
exi_dev_select(dev);
/* send the appropriate command */
a = 0x20000000;
exi_dev_write(dev, &a, sizeof(a));
/* read the time and date value */
exi_dev_read(dev, &a, sizeof(a));
/* deselect the RTC device */
exi_dev_deselect(dev);
exi_dev_give(dev);
return a;
}
