From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarkko Nikula Subject: [PATCH 2/8] i2c: designware: get fast plus and high speed *CNT configuration Date: Fri, 12 Aug 2016 17:02:48 +0300 Message-ID: <1471010574-28598-3-git-send-email-jarkko.nikula@linux.intel.com> References: <1471010574-28598-1-git-send-email-jarkko.nikula@linux.intel.com> Return-path: Received: from mga09.intel.com ([134.134.136.24]:54302 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752596AbcHLODJ (ORCPT ); Fri, 12 Aug 2016 10:03:09 -0400 In-Reply-To: <1471010574-28598-1-git-send-email-jarkko.nikula@linux.intel.com> Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: linux-i2c@vger.kernel.org Cc: Wolfram Sang , Andy Shevchenko , Mika Westerberg , Weifeng Voon , Jarkko Nikula From: Weifeng Voon I2C designware controller can run at fast mode plus and high speed. This patch adds the capability to get the HCNT, LCNT configuration via FPCN (fast plus) and HSCN (high speed) ACPI method. Signed-off-by: Weifeng Voon Signed-off-by: Jarkko Nikula --- drivers/i2c/busses/i2c-designware-core.h | 8 ++++++++ drivers/i2c/busses/i2c-designware-platdrv.c | 2 ++ 2 files changed, 10 insertions(+) diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h index 63f6d4acee39..84866db2d04f 100644 --- a/drivers/i2c/busses/i2c-designware-core.h +++ b/drivers/i2c/busses/i2c-designware-core.h @@ -62,6 +62,10 @@ * @ss_lcnt: standard speed LCNT value * @fs_hcnt: fast speed HCNT value * @fs_lcnt: fast speed LCNT value + * @fp_hcnt: fast plus HCNT value + * @fp_lcnt: fast plus LCNT value + * @hs_hcnt: high speed HCNT value + * @hs_lcnt: high speed LCNT value * @acquire_lock: function to acquire a hardware lock on the bus * @release_lock: function to release a hardware lock on the bus * @pm_runtime_disabled: true if pm runtime is disabled @@ -105,6 +109,10 @@ struct dw_i2c_dev { u16 ss_lcnt; u16 fs_hcnt; u16 fs_lcnt; + u16 fp_hcnt; + u16 fp_lcnt; + u16 hs_hcnt; + u16 hs_lcnt; int (*acquire_lock)(struct dw_i2c_dev *dev); void (*release_lock)(struct dw_i2c_dev *dev); bool pm_runtime_disabled; diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 1608cf4d3263..cbe4fb31cb4b 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -107,6 +107,8 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev) dw_i2c_acpi_params(pdev, "SSCN", &dev->ss_hcnt, &dev->ss_lcnt, NULL); dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt, &dev->sda_hold_time); + dw_i2c_acpi_params(pdev, "FPCN", &dev->fp_hcnt, &dev->fp_lcnt, NULL); + dw_i2c_acpi_params(pdev, "HSCN", &dev->hs_hcnt, &dev->hs_lcnt, NULL); id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev); if (id && id->driver_data) -- 2.8.1