ar1021_i2c simply also supports the ar1020 device we use. This is tested. They also share the same datasheet:
http://ww1.microchip.com/downloads/en/DeviceDoc/40001393C.pdf We differentiate not only to make it obvious that we support both devices, but also to be able to implement the few model specific things in the future. Signed-off-by: Martin Kepplinger <martin.kepplin...@ginzinger.com> --- drivers/input/touchscreen/Kconfig | 4 ++-- drivers/input/touchscreen/ar1021_i2c.c | 13 ++++++++++--- 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 33c62e5..535b91a 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -96,8 +96,8 @@ config TOUCHSCREEN_AR1021_I2C tristate "Microchip AR1021 i2c touchscreen" depends on I2C && OF help - Say Y here if you have the Microchip AR1021 touchscreen controller - chip in your system. + Say Y here if you have the Microchip AR1020 or AR1021 touchscreen + controller chip in your system. If unsure, say N. diff --git a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c index 6562b17..1767257 100644 --- a/drivers/input/touchscreen/ar1021_i2c.c +++ b/drivers/input/touchscreen/ar1021_i2c.c @@ -1,5 +1,5 @@ /* - * Microchip AR1021 driver for I2C + * Microchip AR1020 and AR1021 driver for I2C * * Author: Christian Gmeiner <christian.gmei...@gmail.com> * @@ -24,6 +24,11 @@ struct ar1021_i2c { u8 data[AR1021_TOCUH_PKG_SIZE]; }; +enum { + ar1021, + ar1020, +}; + static irqreturn_t ar1021_i2c_irq(int irq, void *dev_id) { struct ar1021_i2c *ar1021 = dev_id; @@ -151,13 +156,15 @@ static int __maybe_unused ar1021_i2c_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(ar1021_i2c_pm, ar1021_i2c_suspend, ar1021_i2c_resume); static const struct i2c_device_id ar1021_i2c_id[] = { - { "MICROCHIP_AR1021_I2C", 0 }, + { "MICROCHIP_AR1021_I2C", ar1021 }, + { "MICROCHIP_AR1020_I2C", ar1020 }, { }, }; MODULE_DEVICE_TABLE(i2c, ar1021_i2c_id); static const struct of_device_id ar1021_i2c_of_match[] = { { .compatible = "microchip,ar1021-i2c", }, + { .compatible = "microchip,ar1020-i2c", }, { } }; MODULE_DEVICE_TABLE(of, ar1021_i2c_of_match); @@ -175,5 +182,5 @@ static struct i2c_driver ar1021_i2c_driver = { module_i2c_driver(ar1021_i2c_driver); MODULE_AUTHOR("Christian Gmeiner <christian.gmei...@gmail.com>"); -MODULE_DESCRIPTION("Microchip AR1021 I2C Driver"); +MODULE_DESCRIPTION("Microchip AR1020 and AR1021 I2C Driver"); MODULE_LICENSE("GPL"); -- 2.1.4
