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[109.252.170.211]) by smtp.googlemail.com with ESMTPSA id 68sm2163082ljj.135.2020.09.05.07.06.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 05 Sep 2020 07:06:58 -0700 (PDT) Subject: Re: [PATCH v2 1/1] Input: atmel_mxt_ts - implement I2C retries To: Jiada Wang , nick@shmanahar.org, dmitry.torokhov@gmail.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew_Gabbasov@mentor.com, erosca@de.adit-jv.com References: <20200903155904.17454-1-jiada_wang@mentor.com> From: Dmitry Osipenko Message-ID: <88f1aa79-56e1-d41a-a29d-0f7c5d9bd990@gmail.com> Date: Sat, 5 Sep 2020 17:06:57 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200903155904.17454-1-jiada_wang@mentor.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org 03.09.2020 18:59, Jiada Wang пишет: > From: Nick Dyer > > Some maXTouch chips (eg mXT1386) will not respond on the first I2C request > when they are in a sleep state. It must be retried after a delay for the > chip to wake up. > > Signed-off-by: Nick Dyer > Acked-by: Yufeng Shen > (cherry picked from ndyer/linux/for-upstream commit 63fd7a2cd03c3a572a5db39c52f4856819e1835d) > [gdavis: Forward port and fix conflicts.] > Signed-off-by: George G. Davis > [jiada: return exact errno when i2c_transfer & i2c_master_send fails] > Signed-off-by: Jiada Wang > --- > drivers/input/touchscreen/atmel_mxt_ts.c | 45 ++++++++++++++++-------- > 1 file changed, 30 insertions(+), 15 deletions(-) Hello, Jiada! Everything works well on Acer A500 tablet device that uses mXT1386 for the touchscreen controller! Thank you very much! Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko