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tigger

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注册时间： 2021-06-18

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请问 ADS7843 ADS7846 TSC2046 有什么区别吗?

请问 ADS7843 ADS7846 TSC2046 有什么区别吗?

ubuntu

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注册时间： 2020-03-30

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Re: 请问 ADS7843 ADS7846 TSC2046 有什么区别吗?

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 5e640ae..c0b36cc 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -12,17 +12,17 @@ menuconfig INPUT_TOUCHSCREEN
 if INPUT_TOUCHSCREEN
 
 config TOUCHSCREEN_ADS7846
-	tristate "ADS 7846/7843 based touchscreens"
+	tristate "ADS7846/TSC2046 and ADS7843 based touchscreens"
 	depends on SPI_MASTER
 	depends on HWMON = n || HWMON
 	help
 	  Say Y here if you have a touchscreen interface using the
-	  ADS7846 or ADS7843 controller, and your board-specific setup
-	  code includes that in its table of SPI devices.
+	  ADS7846/TSC2046 or ADS7843 controller, and your board-specific
+	  setup code includes that in its table of SPI devices.
 
 	  If HWMON is selected, and the driver is told the reference voltage
 	  on your board, you will also get hwmon interfaces for the voltage
-	  (and on ads7846, temperature) sensors of this chip.
+	  (and on ads7846/tsc2046, temperature) sensors of this chip.
 
 	  If unsure, say N (but it's safe to say "Y").
 
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 693e3b2..b0110fe 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -39,6 +39,7 @@
 /*
  * This code has been heavily tested on a Nokia 770, and lightly
  * tested on other ads7846 devices (OSK/Mistral, Lubbock).
+ * TSC2046 is just newer ads7846 silicon.
  * Support for ads7843 tested on Atmel at91sam926x-EK.
  * Support for ads7845 has only been stubbed in.
  *

软件上面貌似是同一个物种:

http://visa.lab.asu.edu/gitlab/fstrace/android-kernel-msm-hammerhead-3.4-marshmallow-mr3/commit/bff0de5f59ff935138eb41c397a7e50468028b83.diff