From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760537Ab2DKO6N (ORCPT ); Wed, 11 Apr 2012 10:58:13 -0400 Received: from mail-yx0-f174.google.com ([209.85.213.174]:61655 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760484Ab2DKO6J (ORCPT ); Wed, 11 Apr 2012 10:58:09 -0400 Message-ID: <1334156283.2469.3.camel@phoenix> Subject: [PATCH RFT 2/2] regulator: Convert max8997 to set_voltage_time_sel From: Axel Lin To: linux-kernel@vger.kernel.org Cc: Kyungmin Park , MyungJoo Ham , Liam Girdwood , Mark Brown Date: Wed, 11 Apr 2012 22:58:03 +0800 In-Reply-To: <1334156171.2469.1.camel@phoenix> References: <1334156171.2469.1.camel@phoenix> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.2- Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Axel Lin --- drivers/regulator/max8997.c | 55 ++++++++++++++++++++++++++++++++---------- 1 files changed, 42 insertions(+), 13 deletions(-) diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c index 56402e8..ec99bd3 100644 --- a/drivers/regulator/max8997.c +++ b/drivers/regulator/max8997.c @@ -489,9 +489,7 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev, int min_vol = min_uV / 1000, max_vol = max_uV / 1000; const struct voltage_map_desc *desc; int rid = rdev_get_id(rdev); - int reg, shift = 0, mask, ret; - int i; - u8 org; + int i, reg, shift, mask, ret; switch (rid) { case MAX8997_LDO1 ... MAX8997_LDO21: @@ -520,21 +518,50 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev, if (ret) return ret; - max8997_read_reg(i2c, reg, &org); - org = (org & mask) >> shift; - ret = max8997_update_reg(i2c, reg, i << shift, mask << shift); *selector = i; - if (rid == MAX8997_BUCK1 || rid == MAX8997_BUCK2 || - rid == MAX8997_BUCK4 || rid == MAX8997_BUCK5) { - /* If the voltage is increasing */ - if (org < i) - udelay(DIV_ROUND_UP(desc->step * (i - org), - max8997->ramp_delay)); + return ret; +} + +static int max8997_set_voltage_ldobuck_time_sel(struct regulator_dev *rdev, + unsigned int old_selector, + unsigned int new_selector) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + int rid = rdev_get_id(rdev); + const struct voltage_map_desc *desc = reg_voltage_map[rid]; + + /* Delay is required only if the voltage is increasing */ + if (old_selector >= new_selector) + return 0; + + /* No need to delay if gpio_dvs_mode */ + switch (rid) { + case MAX8997_BUCK1: + if (max8997->buck1_gpiodvs) + return 0; + break; + case MAX8997_BUCK2: + if (max8997->buck2_gpiodvs) + return 0; + break; + case MAX8997_BUCK5: + if (max8997->buck5_gpiodvs) + return 0; + break; + } + + switch (rid) { + case MAX8997_BUCK1: + case MAX8997_BUCK2: + case MAX8997_BUCK4: + case MAX8997_BUCK5: + return DIV_ROUND_UP(desc->step * (new_selector - old_selector), + max8997->ramp_delay); } - return ret; + return 0; } /* @@ -780,6 +807,7 @@ static struct regulator_ops max8997_ldo_ops = { .disable = max8997_reg_disable, .get_voltage_sel = max8997_get_voltage_sel, .set_voltage = max8997_set_voltage_ldobuck, + .set_voltage_time_sel = max8997_set_voltage_ldobuck_time_sel, .set_suspend_enable = max8997_reg_enable_suspend, .set_suspend_disable = max8997_reg_disable_suspend, }; @@ -791,6 +819,7 @@ static struct regulator_ops max8997_buck_ops = { .disable = max8997_reg_disable, .get_voltage_sel = max8997_get_voltage_sel, .set_voltage = max8997_set_voltage_buck, + .set_voltage_time_sel = max8997_set_voltage_ldobuck_time_sel, .set_suspend_enable = max8997_reg_enable_suspend, .set_suspend_disable = max8997_reg_disable_suspend, }; -- 1.7.5.4