From mboxrd@z Thu Jan 1 00:00:00 1970 From: "james.chen" Subject: [PATCH] CHROMIUM: elants_i2c.c: Disable idle mode before firmware upgrade procedure. Date: Tue, 21 Jul 2015 10:09:42 +0800 Message-ID: <1437444582-9653-1-git-send-email-james.chen@emc.com.tw> Return-path: Received: from emcscan.emc.com.tw ([192.72.220.5]:38009 "EHLO emcscan.emc.com.tw" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751052AbbGUCRc (ORCPT ); Mon, 20 Jul 2015 22:17:32 -0400 Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Dmitry Torokhov , Herman Lin , linux-input@vger.kernel.org, charliemooney@chromium.org Cc: "james.chen" From: "james.chen" This patch is disable idle mode before firmware upgrade procedure. BUG=chrome-os-partner:39373 TEST= Test Elan touchscreen on cyan project(kernel 3.18) without problems. --- drivers/input/touchscreen/elants_i2c.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index 0efd766..6d3570e 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -605,6 +605,7 @@ static int elants_i2c_do_update_firmware(struct i2c_client *client, const u8 enter_iap[] = { 0x45, 0x49, 0x41, 0x50 }; const u8 enter_iap2[] = { 0x54, 0x00, 0x12, 0x34 }; const u8 iap_ack[] = { 0x55, 0xaa, 0x33, 0xcc }; + const u8 close_idle[] = {0x54, 0x2c, 0x01, 0x01}; u8 buf[HEADER_SIZE]; u16 send_id; int page, n_fw_pages; @@ -617,8 +618,13 @@ static int elants_i2c_do_update_firmware(struct i2c_client *client, } else { /* Start IAP Procedure */ dev_dbg(&client->dev, "Normal IAP procedure\n"); + /* Close idle mode */ + error = elants_i2c_send(client, close_idle, sizeof(close_idle)); + if (error) + dev_err(&client->dev, "Failed close idle: %d\n", error); + msleep(60); elants_i2c_sw_reset(client); - + msleep(20); error = elants_i2c_send(client, enter_iap, sizeof(enter_iap)); } -- 1.8.3.2