input: ads7846: Add missing spi_device_id strings

The SPI core logs error messages if a compatible string device
name is not also present as an spi_device_id.

No spi_device_id values are specified by the driver, therefore
we get 4 log lines every time it is loaded:
SPI driver ads7846 has no spi_device_id for ti,tsc2046
SPI driver ads7846 has no spi_device_id for ti,ads7843
SPI driver ads7846 has no spi_device_id for ti,ads7845
SPI driver ads7846 has no spi_device_id for ti,ads7873

Add the spi_device_id values for these devices.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index faea40d..262d237 100644 (file)
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -1114,6 +1114,16 @@ static const struct of_device_id ads7846_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, ads7846_dt_ids);
 
+static const struct spi_device_id ads7846_spi_ids[] = {
+       { "tsc2046", 0 },
+       { "ads7843", 0 },
+       { "ads7845", 0 },
+       { "ads7846", 0 },
+       { "ads7873", 0 },
+       { }
+};
+MODULE_DEVICE_TABLE(spi, ads7846_spi_ids);
+
 static const struct ads7846_platform_data *ads7846_get_props(struct device *dev)
 {
        struct ads7846_platform_data *pdata;
@@ -1390,6 +1400,7 @@ static struct spi_driver ads7846_driver = {
                .pm     = pm_sleep_ptr(&ads7846_pm),
                .of_match_table = ads7846_dt_ids,
        },
+       .id_table       = ads7846_spi_ids,
        .probe          = ads7846_probe,
        .remove         = ads7846_remove,
 };