From patchwork Wed Nov 27 19:06:51 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felipe Balbi X-Patchwork-Id: 3249491 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4A490C045B for ; Wed, 27 Nov 2013 19:10:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 59598205ED for ; Wed, 27 Nov 2013 19:10:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9DD3A205CD for ; Wed, 27 Nov 2013 19:10:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757909Ab3K0TK2 (ORCPT ); Wed, 27 Nov 2013 14:10:28 -0500 Received: from arroyo.ext.ti.com ([192.94.94.40]:58774 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757526Ab3K0TIW (ORCPT ); Wed, 27 Nov 2013 14:08:22 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id rARJ7hC7011607; Wed, 27 Nov 2013 13:07:43 -0600 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id rARJ7gRt031399; Wed, 27 Nov 2013 13:07:42 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.2.342.3; Wed, 27 Nov 2013 13:07:42 -0600 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id rARJ7fcY009219; Wed, 27 Nov 2013 13:07:42 -0600 From: Felipe Balbi To: CC: , Tony Lindgren , Aaro Koskinen , Linux OMAP Mailing List , Linux Kernel Mailing List , Linux ARM Kernel Mailing List , Felipe Balbi Subject: [PATCH 07/13] mfd: menelaus: limit the usage of the_menelaus Date: Wed, 27 Nov 2013 13:06:51 -0600 Message-ID: <1385579217-20127-8-git-send-email-balbi@ti.com> X-Mailer: git-send-email 1.8.4.GIT In-Reply-To: <1385579217-20127-1-git-send-email-balbi@ti.com> References: <1385579217-20127-1-git-send-email-balbi@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP pass a menelaus_chip pointer as argument to most functions so we can minimize the usage of the global the_menelaus pointer. Signed-off-by: Felipe Balbi --- drivers/mfd/menelaus.c | 265 ++++++++++++++++++++++++++----------------------- 1 file changed, 142 insertions(+), 123 deletions(-) diff --git a/drivers/mfd/menelaus.c b/drivers/mfd/menelaus.c index 4c51e4b..8796e5e 100644 --- a/drivers/mfd/menelaus.c +++ b/drivers/mfd/menelaus.c @@ -177,9 +177,9 @@ struct menelaus_chip { static struct menelaus_chip *the_menelaus; -static int menelaus_write_reg(int reg, u8 value) +static int menelaus_write_reg(struct menelaus_chip *m, int reg, u8 value) { - int val = i2c_smbus_write_byte_data(the_menelaus->client, reg, value); + int val = i2c_smbus_write_byte_data(m->client, reg, value); if (val < 0) { pr_err(DRIVER_NAME ": write error"); @@ -189,9 +189,9 @@ static int menelaus_write_reg(int reg, u8 value) return 0; } -static int menelaus_read_reg(int reg) +static int menelaus_read_reg(struct menelaus_chip *m, int reg) { - int val = i2c_smbus_read_byte_data(the_menelaus->client, reg); + int val = i2c_smbus_read_byte_data(m->client, reg); if (val < 0) pr_err(DRIVER_NAME ": read error"); @@ -204,11 +204,11 @@ static int menelaus_enable_irq(struct menelaus_chip *m, int irq) if (irq > 7) { irq -= 8; m->mask2 &= ~(1 << irq); - return menelaus_write_reg(MENELAUS_INT_MASK2, + return menelaus_write_reg(m, MENELAUS_INT_MASK2, m->mask2); } else { m->mask1 &= ~(1 << irq); - return menelaus_write_reg(MENELAUS_INT_MASK1, + return menelaus_write_reg(m, MENELAUS_INT_MASK1, m->mask1); } } @@ -218,11 +218,11 @@ static int menelaus_disable_irq(struct menelaus_chip *m, int irq) if (irq > 7) { irq -= 8; m->mask2 |= (1 << irq); - return menelaus_write_reg(MENELAUS_INT_MASK2, + return menelaus_write_reg(m, MENELAUS_INT_MASK2, m->mask2); } else { m->mask1 |= (1 << irq); - return menelaus_write_reg(MENELAUS_INT_MASK1, + return menelaus_write_reg(m, MENELAUS_INT_MASK1, m->mask1); } } @@ -230,9 +230,9 @@ static int menelaus_disable_irq(struct menelaus_chip *m, int irq) static int menelaus_ack_irq(struct menelaus_chip *m, int irq) { if (irq > 7) - return menelaus_write_reg(MENELAUS_INT_ACK2, 1 << (irq - 8)); + return menelaus_write_reg(m, MENELAUS_INT_ACK2, 1 << (irq - 8)); else - return menelaus_write_reg(MENELAUS_INT_ACK1, 1 << irq); + return menelaus_write_reg(m, MENELAUS_INT_ACK1, 1 << irq); } /* Adds a handler for an interrupt. Does not run in interrupt context */ @@ -268,12 +268,12 @@ static int menelaus_remove_irq_work(int irq) * in each slot. In this case the cards are not seen by menelaus. * FIXME: Add handling for D1 too */ -static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw) +static void menelaus_mmc_cd_work(struct menelaus_chip *m) { int reg; unsigned char card_mask = 0; - reg = menelaus_read_reg(MENELAUS_MCT_PIN_ST); + reg = menelaus_read_reg(m, MENELAUS_MCT_PIN_ST); if (reg < 0) return; @@ -283,8 +283,8 @@ static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw) if (!(reg & 0x2)) card_mask |= MCT_PIN_ST_S2_CD_ST; - if (menelaus_hw->mmc_callback) - menelaus_hw->mmc_callback(menelaus_hw->mmc_callback_data, + if (m->mmc_callback) + m->mmc_callback(m->mmc_callback_data, card_mask); } @@ -293,14 +293,16 @@ static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw) */ int menelaus_set_mmc_opendrain(int slot, int enable) { + struct menelaus_chip *m = the_menelaus; int ret, val; if (slot != 1 && slot != 2) return -EINVAL; - mutex_lock(&the_menelaus->lock); - ret = menelaus_read_reg(MENELAUS_MCT_CTRL1); + + mutex_lock(&m->lock); + ret = menelaus_read_reg(m, MENELAUS_MCT_CTRL1); if (ret < 0) { - mutex_unlock(&the_menelaus->lock); + mutex_unlock(&m->lock); return ret; } val = ret; @@ -315,8 +317,8 @@ int menelaus_set_mmc_opendrain(int slot, int enable) else val &= ~MCT_CTRL1_S2_CMD_OD; } - ret = menelaus_write_reg(MENELAUS_MCT_CTRL1, val); - mutex_unlock(&the_menelaus->lock); + ret = menelaus_write_reg(m, MENELAUS_MCT_CTRL1, val); + mutex_unlock(&m->lock); return ret; } @@ -324,10 +326,12 @@ EXPORT_SYMBOL(menelaus_set_mmc_opendrain); int menelaus_set_slot_sel(int enable) { + struct menelaus_chip *m = the_menelaus; int ret; - mutex_lock(&the_menelaus->lock); - ret = menelaus_read_reg(MENELAUS_GPIO_CTRL); + mutex_lock(&m->lock); + + ret = menelaus_read_reg(m, MENELAUS_GPIO_CTRL); if (ret < 0) goto out; ret |= GPIO2_DIR_INPUT; @@ -335,15 +339,16 @@ int menelaus_set_slot_sel(int enable) ret |= GPIO_CTRL_SLOTSELEN; else ret &= ~GPIO_CTRL_SLOTSELEN; - ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret); + ret = menelaus_write_reg(m, MENELAUS_GPIO_CTRL, ret); out: - mutex_unlock(&the_menelaus->lock); + mutex_unlock(&m->lock); return ret; } EXPORT_SYMBOL(menelaus_set_slot_sel); int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en) { + struct menelaus_chip *m = the_menelaus; int ret, val; if (slot != 1 && slot != 2) @@ -351,9 +356,9 @@ int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en) if (power >= 3) return -EINVAL; - mutex_lock(&the_menelaus->lock); + mutex_lock(&m->lock); - ret = menelaus_read_reg(MENELAUS_MCT_CTRL2); + ret = menelaus_read_reg(m, MENELAUS_MCT_CTRL2); if (ret < 0) goto out; val = ret; @@ -368,11 +373,11 @@ int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en) else val &= ~(MCT_CTRL2_S2CD_BUFEN | MCT_CTRL2_S2CD_BEN); } - ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, val); + ret = menelaus_write_reg(m, MENELAUS_MCT_CTRL2, val); if (ret < 0) goto out; - ret = menelaus_read_reg(MENELAUS_MCT_CTRL3); + ret = menelaus_read_reg(m, MENELAUS_MCT_CTRL3); if (ret < 0) goto out; val = ret; @@ -388,18 +393,18 @@ int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en) val |= MCT_CTRL3_SLOT2_EN; else val &= ~MCT_CTRL3_SLOT2_EN; - b = menelaus_read_reg(MENELAUS_MCT_CTRL2); + b = menelaus_read_reg(m, MENELAUS_MCT_CTRL2); b &= ~(MCT_CTRL2_VS2_SEL_D0 | MCT_CTRL2_VS2_SEL_D1); b |= power; - ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, b); + ret = menelaus_write_reg(m, MENELAUS_MCT_CTRL2, b); if (ret < 0) goto out; } /* Disable autonomous shutdown */ val &= ~(MCT_CTRL3_S1_AUTO_EN | MCT_CTRL3_S2_AUTO_EN); - ret = menelaus_write_reg(MENELAUS_MCT_CTRL3, val); + ret = menelaus_write_reg(m, MENELAUS_MCT_CTRL3, val); out: - mutex_unlock(&the_menelaus->lock); + mutex_unlock(&m->lock); return ret; } EXPORT_SYMBOL(menelaus_set_mmc_slot); @@ -458,14 +463,15 @@ struct menelaus_vtg_value { static int menelaus_set_voltage(const struct menelaus_vtg *vtg, int mV, int vtg_val, int mode) { + struct menelaus_chip *m = the_menelaus; + struct i2c_client *c = m->client; int val, ret; - struct i2c_client *c = the_menelaus->client; - mutex_lock(&the_menelaus->lock); + mutex_lock(&m->lock); if (!vtg) goto set_voltage; - ret = menelaus_read_reg(vtg->vtg_reg); + ret = menelaus_read_reg(m, vtg->vtg_reg); if (ret < 0) goto out; val = ret & ~(((1 << vtg->vtg_bits) - 1) << vtg->vtg_shift); @@ -475,13 +481,13 @@ static int menelaus_set_voltage(const struct menelaus_vtg *vtg, int mV, "to %d mV (reg 0x%02x, val 0x%02x)\n", vtg->name, mV, vtg->vtg_reg, val); - ret = menelaus_write_reg(vtg->vtg_reg, val); + ret = menelaus_write_reg(m, vtg->vtg_reg, val); if (ret < 0) goto out; set_voltage: - ret = menelaus_write_reg(vtg->mode_reg, mode); + ret = menelaus_write_reg(m, vtg->mode_reg, mode); out: - mutex_unlock(&the_menelaus->lock); + mutex_unlock(&m->lock); if (ret == 0) { /* Wait for voltage to stabilize */ msleep(1); @@ -533,8 +539,9 @@ static const struct menelaus_vtg_value vcore_values[] = { int menelaus_set_vcore_sw(unsigned int mV) { + struct menelaus_chip *m = the_menelaus; + struct i2c_client *c = m->client; int val, ret; - struct i2c_client *c = the_menelaus->client; val = menelaus_get_vtg_value(mV, vcore_values, ARRAY_SIZE(vcore_values)); @@ -544,11 +551,11 @@ int menelaus_set_vcore_sw(unsigned int mV) dev_dbg(&c->dev, "Setting VCORE to %d mV (val 0x%02x)\n", mV, val); /* Set SW mode and the voltage in one go. */ - mutex_lock(&the_menelaus->lock); - ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val); + mutex_lock(&m->lock); + ret = menelaus_write_reg(m, MENELAUS_VCORE_CTRL1, val); if (ret == 0) - the_menelaus->vcore_hw_mode = 0; - mutex_unlock(&the_menelaus->lock); + m->vcore_hw_mode = 0; + mutex_unlock(&m->lock); msleep(1); return ret; @@ -556,8 +563,9 @@ int menelaus_set_vcore_sw(unsigned int mV) int menelaus_set_vcore_hw(unsigned int roof_mV, unsigned int floor_mV) { + struct menelaus_chip *m = the_menelaus; + struct i2c_client *c = m->client; int fval, rval, val, ret; - struct i2c_client *c = the_menelaus->client; rval = menelaus_get_vtg_value(roof_mV, vcore_values, ARRAY_SIZE(vcore_values)); @@ -571,23 +579,23 @@ int menelaus_set_vcore_hw(unsigned int roof_mV, unsigned int floor_mV) dev_dbg(&c->dev, "Setting VCORE FLOOR to %d mV and ROOF to %d mV\n", floor_mV, roof_mV); - mutex_lock(&the_menelaus->lock); - ret = menelaus_write_reg(MENELAUS_VCORE_CTRL3, fval); + mutex_lock(&m->lock); + ret = menelaus_write_reg(m, MENELAUS_VCORE_CTRL3, fval); if (ret < 0) goto out; - ret = menelaus_write_reg(MENELAUS_VCORE_CTRL4, rval); + ret = menelaus_write_reg(m, MENELAUS_VCORE_CTRL4, rval); if (ret < 0) goto out; - if (!the_menelaus->vcore_hw_mode) { - val = menelaus_read_reg(MENELAUS_VCORE_CTRL1); + if (!m->vcore_hw_mode) { + val = menelaus_read_reg(m, MENELAUS_VCORE_CTRL1); /* HW mode, turn OFF byte comparator */ val |= (VCORE_CTRL1_HW_NSW | VCORE_CTRL1_BYP_COMP); - ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val); - the_menelaus->vcore_hw_mode = 1; + ret = menelaus_write_reg(m, MENELAUS_VCORE_CTRL1, val); + m->vcore_hw_mode = 1; } msleep(1); out: - mutex_unlock(&the_menelaus->lock); + mutex_unlock(&m->lock); return ret; } @@ -759,23 +767,26 @@ EXPORT_SYMBOL(menelaus_set_vaux); int menelaus_get_slot_pin_states(void) { - return menelaus_read_reg(MENELAUS_MCT_PIN_ST); + struct menelaus_chip *m = the_menelaus; + + return menelaus_read_reg(m, MENELAUS_MCT_PIN_ST); } EXPORT_SYMBOL(menelaus_get_slot_pin_states); int menelaus_set_regulator_sleep(int enable, u32 val) { + struct menelaus_chip *m = the_menelaus; + struct i2c_client *c = m->client; int t, ret; - struct i2c_client *c = the_menelaus->client; - mutex_lock(&the_menelaus->lock); - ret = menelaus_write_reg(MENELAUS_SLEEP_CTRL2, val); + mutex_lock(&m->lock); + ret = menelaus_write_reg(m, MENELAUS_SLEEP_CTRL2, val); if (ret < 0) goto out; dev_dbg(&c->dev, "regulator sleep configuration: %02x\n", val); - ret = menelaus_read_reg(MENELAUS_GPIO_CTRL); + ret = menelaus_read_reg(m, MENELAUS_GPIO_CTRL); if (ret < 0) goto out; t = (GPIO_CTRL_SLPCTLEN | GPIO3_DIR_INPUT); @@ -783,9 +794,9 @@ int menelaus_set_regulator_sleep(int enable, u32 val) ret |= t; else ret &= ~t; - ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret); + ret = menelaus_write_reg(m, MENELAUS_GPIO_CTRL, ret); out: - mutex_unlock(&the_menelaus->lock); + mutex_unlock(&m->lock); return ret; } @@ -798,9 +809,9 @@ static irqreturn_t menelaus_irq(int irq, void *_menelaus) unsigned long isr; unsigned long i; - isr = (menelaus_read_reg(MENELAUS_INT_STATUS2) + isr = (menelaus_read_reg(m, MENELAUS_INT_STATUS2) & ~m->mask2) << 8; - isr |= menelaus_read_reg(MENELAUS_INT_STATUS1) + isr |= menelaus_read_reg(m, MENELAUS_INT_STATUS1) & ~m->mask1; for_each_set_bit(i, &isr, 16) { @@ -841,9 +852,11 @@ static irqreturn_t menelaus_irq(int irq, void *_menelaus) static void menelaus_to_time(char *regs, struct rtc_time *t) { + struct menelaus_chip *m = the_menelaus; + t->tm_sec = bcd2bin(regs[0]); t->tm_min = bcd2bin(regs[1]); - if (the_menelaus->rtc_control & RTC_CTRL_MODE12) { + if (m->rtc_control & RTC_CTRL_MODE12) { t->tm_hour = bcd2bin(regs[2] & 0x1f) - 1; if (regs[2] & RTC_HR_PM) t->tm_hour += 12; @@ -856,17 +869,18 @@ static void menelaus_to_time(char *regs, struct rtc_time *t) static int time_to_menelaus(struct rtc_time *t, int regnum) { + struct menelaus_chip *m = the_menelaus; int hour, status; - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_sec)); + status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_sec)); if (status < 0) goto fail; - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_min)); + status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_min)); if (status < 0) goto fail; - if (the_menelaus->rtc_control & RTC_CTRL_MODE12) { + if (m->rtc_control & RTC_CTRL_MODE12) { hour = t->tm_hour + 1; if (hour > 12) hour = RTC_HR_PM | bin2bcd(hour - 12); @@ -874,31 +888,32 @@ static int time_to_menelaus(struct rtc_time *t, int regnum) hour = bin2bcd(hour); } else hour = bin2bcd(t->tm_hour); - status = menelaus_write_reg(regnum++, hour); + status = menelaus_write_reg(m, regnum++, hour); if (status < 0) goto fail; - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mday)); + status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_mday)); if (status < 0) goto fail; - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mon + 1)); + status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_mon + 1)); if (status < 0) goto fail; - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_year - 100)); + status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_year - 100)); if (status < 0) goto fail; return 0; fail: - dev_err(&the_menelaus->client->dev, "rtc write reg %02x, err %d\n", + dev_err(&m->client->dev, "rtc write reg %02x, err %d\n", --regnum, status); return status; } static int menelaus_read_time(struct device *dev, struct rtc_time *t) { + struct menelaus_chip *m = dev_get_drvdata(dev); struct i2c_msg msg[2]; char regs[7]; int status; @@ -916,7 +931,7 @@ static int menelaus_read_time(struct device *dev, struct rtc_time *t) msg[1].len = sizeof(regs); msg[1].buf = regs; - status = i2c_transfer(the_menelaus->client->adapter, msg, 2); + status = i2c_transfer(m->client->adapter, msg, 2); if (status != 2) { dev_err(dev, "%s error %d\n", "read", status); return -EIO; @@ -930,23 +945,24 @@ static int menelaus_read_time(struct device *dev, struct rtc_time *t) static int menelaus_set_time(struct device *dev, struct rtc_time *t) { + struct menelaus_chip *m = dev_get_drvdata(dev); int status; /* write date and time registers */ status = time_to_menelaus(t, MENELAUS_RTC_SEC); if (status < 0) return status; - status = menelaus_write_reg(MENELAUS_RTC_WKDAY, bin2bcd(t->tm_wday)); + status = menelaus_write_reg(m, MENELAUS_RTC_WKDAY, bin2bcd(t->tm_wday)); if (status < 0) { - dev_err(&the_menelaus->client->dev, "rtc write reg %02x " + dev_err(&m->client->dev, "rtc write reg %02x " "err %d\n", MENELAUS_RTC_WKDAY, status); return status; } /* now commit the write */ - status = menelaus_write_reg(MENELAUS_RTC_UPDATE, RTC_UPDATE_EVERY); + status = menelaus_write_reg(m, MENELAUS_RTC_UPDATE, RTC_UPDATE_EVERY); if (status < 0) - dev_err(&the_menelaus->client->dev, "rtc commit time, err %d\n", + dev_err(&m->client->dev, "rtc commit time, err %d\n", status); return 0; @@ -954,6 +970,7 @@ static int menelaus_set_time(struct device *dev, struct rtc_time *t) static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w) { + struct menelaus_chip *m = dev_get_drvdata(dev); struct i2c_msg msg[2]; char regs[6]; int status; @@ -971,7 +988,7 @@ static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w) msg[1].len = sizeof(regs); msg[1].buf = regs; - status = i2c_transfer(the_menelaus->client->adapter, msg, 2); + status = i2c_transfer(m->client->adapter, msg, 2); if (status != 2) { dev_err(dev, "%s error %d\n", "alarm read", status); return -EIO; @@ -979,7 +996,7 @@ static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w) menelaus_to_time(regs, &w->time); - w->enabled = !!(the_menelaus->rtc_control & RTC_CTRL_AL_EN); + w->enabled = !!(m->rtc_control & RTC_CTRL_AL_EN); /* NOTE we *could* check if actually pending... */ w->pending = 0; @@ -989,16 +1006,17 @@ static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w) static int menelaus_set_alarm(struct device *dev, struct rtc_wkalrm *w) { + struct menelaus_chip *m = dev_get_drvdata(dev); int status; - if (the_menelaus->client->irq <= 0 && w->enabled) + if (m->client->irq <= 0 && w->enabled) return -ENODEV; /* clear previous alarm enable */ - if (the_menelaus->rtc_control & RTC_CTRL_AL_EN) { - the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; - status = menelaus_write_reg(MENELAUS_RTC_CTRL, - the_menelaus->rtc_control); + if (m->rtc_control & RTC_CTRL_AL_EN) { + m->rtc_control &= ~RTC_CTRL_AL_EN; + status = menelaus_write_reg(m, MENELAUS_RTC_CTRL, + m->rtc_control); if (status < 0) return status; } @@ -1010,9 +1028,9 @@ static int menelaus_set_alarm(struct device *dev, struct rtc_wkalrm *w) /* enable alarm if requested */ if (w->enabled) { - the_menelaus->rtc_control |= RTC_CTRL_AL_EN; - status = menelaus_write_reg(MENELAUS_RTC_CTRL, - the_menelaus->rtc_control); + m->rtc_control |= RTC_CTRL_AL_EN; + status = menelaus_write_reg(m, MENELAUS_RTC_CTRL, + m->rtc_control); } return status; @@ -1030,44 +1048,45 @@ static void menelaus_rtc_update_work(struct menelaus_chip *m) static int menelaus_ioctl(struct device *dev, unsigned cmd, unsigned long arg) { + struct menelaus_chip *m = dev_get_drvdata(dev); int status; - if (the_menelaus->client->irq <= 0) + if (m->client->irq <= 0) return -ENOIOCTLCMD; switch (cmd) { /* alarm IRQ */ case RTC_AIE_ON: - if (the_menelaus->rtc_control & RTC_CTRL_AL_EN) + if (m->rtc_control & RTC_CTRL_AL_EN) return 0; - the_menelaus->rtc_control |= RTC_CTRL_AL_EN; + m->rtc_control |= RTC_CTRL_AL_EN; break; case RTC_AIE_OFF: - if (!(the_menelaus->rtc_control & RTC_CTRL_AL_EN)) + if (!(m->rtc_control & RTC_CTRL_AL_EN)) return 0; - the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; + m->rtc_control &= ~RTC_CTRL_AL_EN; break; /* 1/second "update" IRQ */ case RTC_UIE_ON: - if (the_menelaus->uie) + if (m->uie) return 0; status = menelaus_remove_irq_work(MENELAUS_RTCTMR_IRQ); status = menelaus_add_irq_work(MENELAUS_RTCTMR_IRQ, menelaus_rtc_update_work); if (status == 0) - the_menelaus->uie = 1; + m->uie = 1; return status; case RTC_UIE_OFF: - if (!the_menelaus->uie) + if (!m->uie) return 0; status = menelaus_remove_irq_work(MENELAUS_RTCTMR_IRQ); if (status == 0) - the_menelaus->uie = 0; + m->uie = 0; return status; default: return -ENOIOCTLCMD; } - return menelaus_write_reg(MENELAUS_RTC_CTRL, the_menelaus->rtc_control); + return menelaus_write_reg(m, MENELAUS_RTC_CTRL, m->rtc_control); } #else @@ -1092,8 +1111,8 @@ static void menelaus_rtc_alarm_work(struct menelaus_chip *m) local_irq_enable(); /* then disable it; alarms are oneshot */ - the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; - menelaus_write_reg(MENELAUS_RTC_CTRL, the_menelaus->rtc_control); + m->rtc_control &= ~RTC_CTRL_AL_EN; + menelaus_write_reg(m, MENELAUS_RTC_CTRL, m->rtc_control); } static inline void menelaus_rtc_init(struct menelaus_chip *m) @@ -1101,7 +1120,7 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m) int alarm = (m->client->irq > 0); /* assume 32KDETEN pin is pulled high */ - if (!(menelaus_read_reg(MENELAUS_OSC_CTRL) & 0x80)) { + if (!(menelaus_read_reg(m, MENELAUS_OSC_CTRL) & 0x80)) { dev_dbg(&m->client->dev, "no 32k oscillator\n"); return; } @@ -1117,7 +1136,7 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m) } /* be sure RTC is enabled; allow 1/sec irqs; leave 12hr mode alone */ - m->rtc_control = menelaus_read_reg(MENELAUS_RTC_CTRL); + m->rtc_control = menelaus_read_reg(m, MENELAUS_RTC_CTRL); if (!(m->rtc_control & RTC_CTRL_RTC_EN) || (m->rtc_control & RTC_CTRL_AL_EN) || (m->rtc_control & RTC_CTRL_EVERY_MASK)) { @@ -1127,7 +1146,7 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m) } m->rtc_control &= ~RTC_CTRL_EVERY_MASK; m->rtc_control &= ~RTC_CTRL_AL_EN; - menelaus_write_reg(MENELAUS_RTC_CTRL, m->rtc_control); + menelaus_write_reg(m, MENELAUS_RTC_CTRL, m->rtc_control); } m->rtc = rtc_device_register(DRIVER_NAME, @@ -1140,7 +1159,7 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m) } dev_err(&m->client->dev, "can't register RTC: %d\n", (int) PTR_ERR(m->rtc)); - the_menelaus->rtc = NULL; + m->rtc = NULL; } } @@ -1160,7 +1179,7 @@ static struct i2c_driver menelaus_i2c_driver; static int menelaus_probe(struct i2c_client *client, const struct i2c_device_id *id) { - struct menelaus_chip *menelaus; + struct menelaus_chip *m; int rev = 0, val; int err = 0; struct menelaus_platform_data *menelaus_pdata = @@ -1172,36 +1191,36 @@ static int menelaus_probe(struct i2c_client *client, return -ENODEV; } - menelaus = devm_kzalloc(&client->dev, sizeof(*menelaus), GFP_KERNEL); - if (!menelaus) + m = devm_kzalloc(&client->dev, sizeof(*m), GFP_KERNEL); + if (!m) return -ENOMEM; - i2c_set_clientdata(client, menelaus); + i2c_set_clientdata(client, m); - the_menelaus = menelaus; - menelaus->client = client; + the_menelaus = m; + m->client = client; /* If a true probe check the device */ - rev = menelaus_read_reg(MENELAUS_REV); + rev = menelaus_read_reg(m, MENELAUS_REV); if (rev < 0) { pr_err(DRIVER_NAME ": device not found"); return -ENODEV; } /* Ack and disable all Menelaus interrupts */ - menelaus_write_reg(MENELAUS_INT_ACK1, 0xff); - menelaus_write_reg(MENELAUS_INT_ACK2, 0xff); - menelaus_write_reg(MENELAUS_INT_MASK1, 0xff); - menelaus_write_reg(MENELAUS_INT_MASK2, 0xff); - menelaus->mask1 = 0xff; - menelaus->mask2 = 0xff; + menelaus_write_reg(m, MENELAUS_INT_ACK1, 0xff); + menelaus_write_reg(m, MENELAUS_INT_ACK2, 0xff); + menelaus_write_reg(m, MENELAUS_INT_MASK1, 0xff); + menelaus_write_reg(m, MENELAUS_INT_MASK2, 0xff); + m->mask1 = 0xff; + m->mask2 = 0xff; /* Set output buffer strengths */ - menelaus_write_reg(MENELAUS_MCT_CTRL1, 0x73); + menelaus_write_reg(m, MENELAUS_MCT_CTRL1, 0x73); if (client->irq > 0) { err = request_threaded_irq(client->irq, NULL, menelaus_irq, - IRQF_ONESHOT, DRIVER_NAME, menelaus); + IRQF_ONESHOT, DRIVER_NAME, m); if (err) { dev_dbg(&client->dev, "can't get IRQ %d, err %d\n", client->irq, err); @@ -1209,17 +1228,17 @@ static int menelaus_probe(struct i2c_client *client, } } - mutex_init(&menelaus->lock); + mutex_init(&m->lock); pr_info("Menelaus rev %d.%d\n", rev >> 4, rev & 0x0f); - val = menelaus_read_reg(MENELAUS_VCORE_CTRL1); + val = menelaus_read_reg(m, MENELAUS_VCORE_CTRL1); if (val < 0) goto fail; if (val & (1 << 7)) - menelaus->vcore_hw_mode = 1; + m->vcore_hw_mode = 1; else - menelaus->vcore_hw_mode = 0; + m->vcore_hw_mode = 0; if (menelaus_pdata != NULL && menelaus_pdata->late_init != NULL) { err = menelaus_pdata->late_init(&client->dev); @@ -1227,19 +1246,19 @@ static int menelaus_probe(struct i2c_client *client, goto fail; } - menelaus_rtc_init(menelaus); + menelaus_rtc_init(m); return 0; fail: - free_irq(client->irq, menelaus); + free_irq(client->irq, m); return err; } static int menelaus_remove(struct i2c_client *client) { - struct menelaus_chip *menelaus = i2c_get_clientdata(client); + struct menelaus_chip *m = i2c_get_clientdata(client); - free_irq(client->irq, menelaus); + free_irq(client->irq, m); the_menelaus = NULL; return 0; }