static int omap2_onenand_setup_async(void __iomem *onenand_base)
{
struct gpmc_timings t;
int ret;
if (gpmc_onenand_data->of_node) {
gpmc_read_settings_dt(gpmc_onenand_data->of_node,
&onenand_async);
if (onenand_async.sync_read || onenand_async.sync_write) {
if (onenand_async.sync_write)
gpmc_onenand_data->flags |=
ONENAND_SYNC_READWRITE;
else
gpmc_onenand_data->flags |= ONENAND_SYNC_READ;
onenand_async.sync_read = false;
onenand_async.sync_write = false;
}
}
omap2_onenand_set_async_mode(onenand_base);
omap2_onenand_calc_async_timings(&t);
ret = gpmc_cs_program_settings(gpmc_onenand_data->cs, &onenand_async);
if (ret < 0)
return ret;
ret = gpmc_cs_set_timings(gpmc_onenand_data->cs, &t, &onenand_async);
if (ret < 0)
return ret;
omap2_onenand_set_async_mode(onenand_base);
return 0;
}
static int omap2_onenand_setup_sync(void __iomem *onenand_base, int *freq_ptr)
{
int ret, freq = *freq_ptr;
struct gpmc_timings t;
if (!freq) {
/* Very first call freq is not known */
freq = omap2_onenand_get_freq(gpmc_onenand_data, onenand_base);
if (!freq)
return -ENODEV;
set_onenand_cfg(onenand_base);
}
if (gpmc_onenand_data->of_node) {
gpmc_read_settings_dt(gpmc_onenand_data->of_node,
&onenand_sync);
} else {
/*
* FIXME: Appears to be legacy code from initial ONENAND commit.
* Unclear what boards this is for and if this can be removed.
*/
if (!cpu_is_omap34xx())
onenand_sync.wait_on_read = true;
}
omap2_onenand_calc_sync_timings(&t, gpmc_onenand_data->flags, freq);
ret = gpmc_cs_program_settings(gpmc_onenand_data->cs, &onenand_sync);
if (ret < 0)
return ret;
ret = gpmc_cs_set_timings(gpmc_onenand_data->cs, &t, &onenand_sync);
if (ret < 0)
return ret;
set_onenand_cfg(onenand_base);
*freq_ptr = freq;
return 0;
}
static int omap2_onenand_setup_async(void __iomem *onenand_base)
{
struct gpmc_timings t;
int ret;
/*
* Note that we need to keep sync_write set for the call to
* omap2_onenand_set_async_mode() to work to detect the onenand
* supported clock rate for the sync timings.
*/
if (gpmc_onenand_data->of_node) {
gpmc_read_settings_dt(gpmc_onenand_data->of_node,
&onenand_async);
if (onenand_async.sync_read || onenand_async.sync_write) {
if (onenand_async.sync_write)
gpmc_onenand_data->flags |=
ONENAND_SYNC_READWRITE;
else
gpmc_onenand_data->flags |= ONENAND_SYNC_READ;
onenand_async.sync_read = false;
}
}
onenand_async.sync_write = true;
omap2_onenand_calc_async_timings(&t);
ret = gpmc_cs_program_settings(gpmc_onenand_data->cs, &onenand_async);
if (ret < 0)
return ret;
ret = gpmc_cs_set_timings(gpmc_onenand_data->cs, &t, &onenand_async);
if (ret < 0)
return ret;
omap2_onenand_set_async_mode(onenand_base);
return 0;
}