From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shinya Kuribayashi Subject: [PATCH 0/5] i2c-sh_mobile non-urgent changes Date: Wed, 24 Oct 2012 19:55:59 +0900 Message-ID: <5087C93F.6080601@renesas.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: w.sang@pengutronix.de, ben-linux@fluff.org, magnus.damm@gmail.com Cc: linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sh@vger.kernel.org List-Id: linux-i2c@vger.kernel.org Hello, This is the first batch to fix the i2c-sh_mobile driver. As a first step, this comprises of the SCL optimization work and a simple fix to annoying spurious WAIT interrupt issue; in other words, this does not change tx/rx data handling logic. This driver has an architectural problem with send/receive procedures and needs a fundamental overhaul. I've been working on splitting into logical chunks, but not yet completed. Patches are prepared against the vanilla v3.6. I don't have a chance to give it a try with v3.6+ kernels myself, but tend to be optimistic about that. I have been cooking these patches over a year, and they work perfectly fine with older kernels ..v3.4 so far. Shinya Kuribayashi (5): i2c: i2c-sh_mobile: calculate clock parameters at driver probing time i2c: i2c-sh_mobile: optimize ICCH/ICCL values according to I2C bus speed i2c: i2c-sh_mobile: fix ICCH to avoid violation of the tHD;STA timing spec i2c: i2c-sh_mobile: support I2C hardware block with a faster operating clock i2c: i2c-sh_mobile: fix spurious transfer request timed out drivers/i2c/busses/i2c-sh_mobile.c | 150 ++++++++++++++++++++++++------------- include/linux/i2c/i2c-sh_mobile.h | 1 + 2 files changed, 98 insertions(+), 53 deletions(-) -- Shinya Kuribayashi Renesas Electronics