For omap3, proper implementation of eocz bit is needed. It was actually a TODO in the driver.
Signed-off-by: Pavel Machek <[email protected]> --- No longer includes forced reading in single conversion mode; that will be done as a separate patch. diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c index 634b6ce..2fde78c 100644 --- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c +++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c @@ -917,7 +903,8 @@ void *ti_bandgap_get_sensor_data(struct ti_bandgap *bgp, int id) static int ti_bandgap_force_single_read(struct ti_bandgap *bgp, int id) { - u32 temp = 0, counter = 1000; + u32 counter = 1000; + struct temp_sensor_registers *tsr; /* Select single conversion mode */ if (TI_BANDGAP_HAS(bgp, MODE_CONFIG)) @@ -925,16 +912,27 @@ ti_bandgap_force_single_read(struct ti_bandgap *bgp, int id) /* Start of Conversion = 1 */ RMW_BITS(bgp, id, temp_sensor_ctrl, bgap_soc_mask, 1); - /* Wait until DTEMP is updated */ - temp = ti_bandgap_read_temp(bgp, id); - while ((temp == 0) && --counter) - temp = ti_bandgap_read_temp(bgp, id); - /* REVISIT: Check correct condition for end of conversion */ + /* Wait for EOCZ going up */ + tsr = bgp->conf->sensors[id].registers; + + while (--counter) { + if (ti_bandgap_readl(bgp, tsr->temp_sensor_ctrl) & + tsr->bgap_eocz_mask) + break; + } /* Start of Conversion = 0 */ RMW_BITS(bgp, id, temp_sensor_ctrl, bgap_soc_mask, 0); + /* Wait for EOCZ going down */ + counter = 1000; + while (--counter) { + if (!(ti_bandgap_readl(bgp, tsr->temp_sensor_ctrl) & + tsr->bgap_eocz_mask)) + break; + } + return 0; } -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
