From 6a71f38dd87f255a0586104ce2a14d5a3ddf3401 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 8 Sep 2014 15:28:42 +0200 Subject: [PATCH] mfd: ti_am335x_tscadc: Fix TSC resume In the resume path, the ADC invokes am335x_tsc_se_set_cache() with 0 as the steps argument if continous mode is not in use. This in turn disables all steps and so the TSC is not working until one ADC sampling is performed. This patch fixes it by writing the current cached mask instead of the passed steps. Fixes: 7ca6740cd1cd ("mfd: input: iio: ti_amm335x: Rework TSC/ADCA synchronization") Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Lee Jones --- drivers/mfd/ti_am335x_tscadc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c index 8b119ce20b93..121add8be456 100644 --- a/drivers/mfd/ti_am335x_tscadc.c +++ b/drivers/mfd/ti_am335x_tscadc.c @@ -57,7 +57,7 @@ void am335x_tsc_se_set_cache(struct ti_tscadc_dev *tsadc, u32 val) if (tsadc->adc_waiting) wake_up(&tsadc->reg_se_wait); else if (!tsadc->adc_in_use) - tscadc_writel(tsadc, REG_SE, val); + tscadc_writel(tsadc, REG_SE, tsadc->reg_se_cache); spin_unlock_irqrestore(&tsadc->reg_lock, flags); } -- 2.20.1