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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-14 17:29:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-14 17:29:55 -0700
commitf0c1bc95a108b36677dde6c9d96a5bb810a05b75 (patch)
tree335c33469407d0ebda5670dabb49c6ecad64263e /drivers/mfd/ti_am335x_tscadc.c
parent1dcf58d6e6e6eb7ec10e9abc56887b040205b06f (diff)
parente554a99ee8d09132e80dc467433c9a4df9054645 (diff)
downloadtalos-op-linux-f0c1bc95a108b36677dde6c9d96a5bb810a05b75.tar.gz
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Merge tag 'mfd-for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones: "Changes to existing drivers: - Rename child driver [axp288_battery => axp288_fuel_gauge]; axp20x - Rename child driver [max77693-flash => max77693-led]; max77693 - Error handling fixes; intel_soc_pmic - GPIO tweaking; intel_soc_pmic - Remove non-DT code; vexpress-sysreg, tc3589x - Remove unused/legacy code; ti_am335x_tscadc, rts5249, rtsx_gops, rtsx_pcr, rtc-s5m, sec-core, max77693, menelaus, wm5102-tables - Trivial fixups; rtsx_pci, da9150-core, sec-core, max7769, max77693, mc13xxx-core, dln2, hi6421-pmic-core, rk808, twl4030-power, lpc_ich, menelaus, twl6040 - Update register/address values; rts5227, rts5249 - DT and/or binding document fixups; arizona, da9150, mt6397, axp20x, qcom-rpm, qcom-spmi-pmic - Couple of trivial core Kconfig fixups - Remove use of seq_printf return value; ab8500-debugfs - Remove __exit markups; menelaus, tps65010 - Fix platform-device name collisions; mfd-core New drivers/supported devices: - Add support for wm8280/wm8281 into arizona - Add support for COMe-cBL6 into kempld-core - Add support for rts524a and rts525a into rts5249 - Add support for ipq8064 into qcom_rpm - Add support for extcon into axp20x - New MediaTek MT6397 PMIC driver - New Maxim MAX77843 PMIC dirver - New Intel Quark X1000 I2C-GPIO driver - New Skyworks SKY81452 driver" * tag 'mfd-for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (76 commits) mfd: sec: Fix RTC alarm interrupt number on S2MPS11 mfd: wm5102: Remove registers for output 3R from readable list mfd: tps65010: Remove incorrect __exit markups mfd: devicetree: bindings: Add Qualcomm RPM regulator subnodes mfd: axp20x: Add support for extcon cell mfd: lpc_ich: Sort IDs mfd: twl6040: Remove wrong and unneeded "platform:twl6040" modalias mfd: qcom-spmi-pmic: Add specific compatible strings for Qualcomm's SPMI PMIC's mfd: axp20x: Fix duplicate const for model names mfd: menelaus: Use macro for magic number mfd: menelaus: Drop support for SW controller VCORE mfd: menelaus: Delete omap_has_menelaus mfd: arizona: Correct type of gpio_defaults mfd: lpc_ich: Sort IDs mfd: Fix a typo in Kconfig mfd: qcom_rpm: Add support for IPQ8064 mfd: devicetree: qcom_rpm: Document IPQ8064 resources mfd: core: Fix platform-device name collisions mfd: intel_quark_i2c_gpio: Don't crash if !DMI dt-bindings: Add vendor-prefix for X-Powers ...
Diffstat (limited to 'drivers/mfd/ti_am335x_tscadc.c')
-rw-r--r--drivers/mfd/ti_am335x_tscadc.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
index 467c80e1c4ae..e4e4b22eebc9 100644
--- a/drivers/mfd/ti_am335x_tscadc.c
+++ b/drivers/mfd/ti_am335x_tscadc.c
@@ -68,12 +68,6 @@ static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tsadc)
DEFINE_WAIT(wait);
u32 reg;
- /*
- * disable TSC steps so it does not run while the ADC is using it. If
- * write 0 while it is running (it just started or was already running)
- * then it completes all steps that were enabled and stops then.
- */
- tscadc_writel(tsadc, REG_SE, 0);
reg = tscadc_readl(tsadc, REG_ADCFSM);
if (reg & SEQ_STATUS) {
tsadc->adc_waiting = true;
@@ -86,8 +80,12 @@ static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tsadc)
spin_lock_irq(&tsadc->reg_lock);
finish_wait(&tsadc->reg_se_wait, &wait);
+ /*
+ * Sequencer should either be idle or
+ * busy applying the charge step.
+ */
reg = tscadc_readl(tsadc, REG_ADCFSM);
- WARN_ON(reg & SEQ_STATUS);
+ WARN_ON((reg & SEQ_STATUS) && !(reg & CHARGE_STEP));
tsadc->adc_waiting = false;
}
tsadc->adc_in_use = true;
@@ -96,7 +94,6 @@ static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tsadc)
void am335x_tsc_se_set_once(struct ti_tscadc_dev *tsadc, u32 val)
{
spin_lock_irq(&tsadc->reg_lock);
- tsadc->reg_se_cache |= val;
am335x_tscadc_need_adc(tsadc);
tscadc_writel(tsadc, REG_SE, val);
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