diff mbox

[31/53] Input: atmel_mxt_ts - Add bootloader addresses for new chips

Message ID 1370453866-16534-32-git-send-email-nick.dyer@itdev.co.uk (mailing list archive)
State New, archived
Headers show

Commit Message

Nick Dyer June 5, 2013, 5:37 p.m. UTC 
Later chips (for example mXT1664S) different mappings for bootloader addresses.
This means that we must look at the family ID to determine which address to
use. There is an additional complication: when we probe and we don't know the
family ID yet, we need to try both possible addresses to find the bootloader.

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Acked-by: Benson Leung <bleung@chromium.org>
---
 drivers/input/touchscreen/atmel_mxt_ts.c |    6 ++++++
 1 file changed, 6 insertions(+)
diff mbox

Patch

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 125fe2f..06b631b 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -397,6 +397,12 @@  static int mxt_lookup_bootloader_address(struct mxt_data *data)
 	switch (appmode) {
 	case 0x4a:
 	case 0x4b:
+		/* Chips after 1664S use different scheme */
+		if (data->info.family_id >= 0xa2) {
+			bootloader = appmode - 0x24;
+			break;
+		}
+		/* Fall through for normal case */
 	case 0x4c:
 	case 0x4d:
 	case 0x5a: