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| author | Marcin Juszkiewicz <marcin@buglabs.net> | 2009-04-27 16:41:24 +0200 |
|---|---|---|
| committer | Marcin Juszkiewicz <marcin@buglabs.net> | 2009-04-28 18:09:45 +0200 |
| commit | 0adc74b06210f1be01145a5977a36b83aca0aa68 (patch) | |
| tree | 378495bdf474a70afef101f9e1859953d8826129 /meta/packages/linux/linux-omap-2.6.29/ads7846-detection.patch | |
| parent | d65be3dd2aaa643b5596c8470caf7f291513efee (diff) | |
| download | openembedded-core-0adc74b06210f1be01145a5977a36b83aca0aa68.tar.gz openembedded-core-0adc74b06210f1be01145a5977a36b83aca0aa68.tar.bz2 openembedded-core-0adc74b06210f1be01145a5977a36b83aca0aa68.tar.xz openembedded-core-0adc74b06210f1be01145a5977a36b83aca0aa68.zip | |
beagleboard: added 2.6.29 kernel from OE
tested on B7
Signed-off-by: Marcin Juszkiewicz <marcin@buglabs.net>
Diffstat (limited to 'meta/packages/linux/linux-omap-2.6.29/ads7846-detection.patch')
| -rw-r--r-- | meta/packages/linux/linux-omap-2.6.29/ads7846-detection.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meta/packages/linux/linux-omap-2.6.29/ads7846-detection.patch b/meta/packages/linux/linux-omap-2.6.29/ads7846-detection.patch new file mode 100644 index 000000000..25a1cb052 --- /dev/null +++ b/meta/packages/linux/linux-omap-2.6.29/ads7846-detection.patch @@ -0,0 +1,41 @@ +diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c +index 2ae5ab8..a68b0a6 100644 +--- a/drivers/input/touchscreen/ads7846.c ++++ b/drivers/input/touchscreen/ads7846.c +@@ -1154,9 +1154,16 @@ static int __devinit ads7846_probe(struct spi_device *spi) + /* take a first sample, leaving nPENIRQ active and vREF off; avoid + * the touchscreen, in case it's not connected. + */ +- (void) ads7846_read12_ser(&spi->dev, ++ err = ads7846_read12_ser(&spi->dev, + READ_12BIT_SER(vaux) | ADS_PD10_ALL_ON); + ++ /* if sample is all 0's or all 1's then there is no device on spi */ ++ if ( (err == 0x000) || (err == 0xfff)) { ++ dev_info(&spi->dev, "no device detected, test read result was 0x%08X\n", err); ++ err = -ENODEV; ++ goto err_free_irq; ++ } ++ + err = sysfs_create_group(&spi->dev.kobj, &ads784x_attr_group); + if (err) + goto err_remove_hwmon; +@@ -1174,7 +1181,7 @@ static int __devinit ads7846_probe(struct spi_device *spi) + err_free_irq: + free_irq(spi->irq, ts); + err_free_gpio: +- if (ts->gpio_pendown != -1) ++ if (!ts->get_pendown_state && ts->gpio_pendown != -1) + gpio_free(ts->gpio_pendown); + err_cleanup_filter: + if (ts->filter_cleanup) +@@ -1201,7 +1208,7 @@ static int __devexit ads7846_remove(struct spi_device *spi) + /* suspend left the IRQ disabled */ + enable_irq(ts->spi->irq); + +- if (ts->gpio_pendown != -1) ++ if (!ts->get_pendown_state && ts->gpio_pendown != -1) + gpio_free(ts->gpio_pendown); + + if (ts->filter_cleanup) + |