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ti-soc-thermal: implement eocz bit to make driver useful on omap3
For omap3, proper implementation of eocz bit is needed. It was actually a TODO in the driver. Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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1 changed files with 18 additions and 6 deletions
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@ -894,7 +894,8 @@ void *ti_bandgap_get_sensor_data(struct ti_bandgap *bgp, int id)
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static int
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ti_bandgap_force_single_read(struct ti_bandgap *bgp, int id)
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{
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u32 temp = 0, counter = 1000;
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u32 counter = 1000;
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struct temp_sensor_registers *tsr;
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/* Select single conversion mode */
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if (TI_BANDGAP_HAS(bgp, MODE_CONFIG))
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@ -902,16 +903,27 @@ ti_bandgap_force_single_read(struct ti_bandgap *bgp, int id)
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/* Start of Conversion = 1 */
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RMW_BITS(bgp, id, temp_sensor_ctrl, bgap_soc_mask, 1);
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/* Wait until DTEMP is updated */
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temp = ti_bandgap_read_temp(bgp, id);
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while ((temp == 0) && --counter)
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temp = ti_bandgap_read_temp(bgp, id);
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/* REVISIT: Check correct condition for end of conversion */
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/* Wait for EOCZ going up */
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tsr = bgp->conf->sensors[id].registers;
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while (--counter) {
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if (ti_bandgap_readl(bgp, tsr->temp_sensor_ctrl) &
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tsr->bgap_eocz_mask)
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break;
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}
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/* Start of Conversion = 0 */
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RMW_BITS(bgp, id, temp_sensor_ctrl, bgap_soc_mask, 0);
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/* Wait for EOCZ going down */
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counter = 1000;
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while (--counter) {
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if (!(ti_bandgap_readl(bgp, tsr->temp_sensor_ctrl) &
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tsr->bgap_eocz_mask))
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break;
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}
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return 0;
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}
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