recipes-kernel/linux/linux-ti33x-psp-3.1/adc/0007-tscadc-make-stepconfig-channel-configurable.patch

   1 From 012ea9d8c2e7e522b1bd614ba5df814224663140 Mon Sep 17 00:00:00 2001
   2 From: Joel A Fernandes <joelagnel@ti.com>
   3 Date: Mon, 28 Nov 2011 18:18:04 -0600
   4 Subject: [PATCH 7/9] tscadc: make stepconfig channel-configurable
   5
   6 Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
   7 ---
   8  drivers/input/touchscreen/ti_tscadc.c |    8 +++++---
   9  1 files changed, 5 insertions(+), 3 deletions(-)
  10
  11 diff --git a/drivers/input/touchscreen/ti_tscadc.c b/drivers/input/touchscreen/ti_tscadc.c
  12 index 49a5a70..638feb9 100644
  13 --- a/drivers/input/touchscreen/ti_tscadc.c
  14 +++ b/drivers/input/touchscreen/ti_tscadc.c
  15 @@ -129,7 +129,9 @@ static void tscadc_writel(struct tscadc *tsc, unsigned int reg,
  16         writel(val, tsc->tsc_base + reg);
  17  }
  18
  19 -static void tsc_adc_step_config(struct tscadc *ts_dev)
  20 +/* Configure ADC to sample on channel (1-8) */
  21 +
  22 +static void tsc_adc_step_config(struct tscadc *ts_dev, int channel)
  23  {
  24         unsigned int    stepconfig = 0, delay = 0, chargeconfig = 0;
  25
  26 @@ -141,7 +143,7 @@ static void tsc_adc_step_config(struct tscadc *ts_dev)
  27          */
  28         stepconfig = TSCADC_STEPCONFIG_MODE_SWONESHOT |
  29                 TSCADC_STEPCONFIG_2SAMPLES_AVG |
  30 -               (0x7 << 19);
  31 +               ((channel-1) << 19);
  32
  33         delay = TSCADC_STEPCONFIG_SAMPLEDLY | TSCADC_STEPCONFIG_OPENDLY;
  34
  35 @@ -593,7 +595,7 @@ static      int __devinit tscadc_probe(struct platform_device *pdev)
  36                         goto err_fail;
  37         }
  38         else {
  39 -               tsc_adc_step_config(ts_dev);
  40 +               tsc_adc_step_config(ts_dev, 8);
  41                 tscadc_writel(ts_dev, TSCADC_REG_FIFO0THR, 0);
  42                 irqenable = TSCADC_IRQENB_FIFO0THRES;
  43         }
  44 --
  45 1.7.4.1
  46