From patchwork Tue Apr 30 11:20:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Lu X-Patchwork-Id: 10923289 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 881D414B6 for ; Tue, 30 Apr 2019 11:22:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7093028A85 for ; Tue, 30 Apr 2019 11:22:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 645CE28A8E; Tue, 30 Apr 2019 11:22:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D401728A85 for ; Tue, 30 Apr 2019 11:22:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=lK4ILX1692EeZew72/VRfRNHsghIwivfxN8pDBK4inU=; b=ltfJROMVWWT0fX MoA9J/lg5bNTz8ayH8PcSAnd9ujvVypNMUsNOvMo2qPuM50eAsE/nAAODS8U6vDF762WnFQjThvpO W6FbmFIZQ8ywcewmL3+oxPjotNhPOK1Az474AvPLLIANDBmSXaOi+QZHN5BIkTFVZRUREKJFSx1kJ TtjD4x8JZ7JNylI1P7ZgXSBDOKStSAmTnkddS2BXI0TUHvWy3h1BTcuO21EJBfTlD/S8NGAq1p621 9X0gTkl2uPr2rjbTmQu64eIrrx0rY68zVAi4/2gmy3e0Ant7X7B/3m/QRPhB8kfsxoIV1pvayvJxk 12go6XiZPumMD2liDTCQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hLQq5-0001qG-W1; Tue, 30 Apr 2019 11:22:22 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hLQpU-00016M-Pw; Tue, 30 Apr 2019 11:22:05 +0000 X-UUID: 4026ac42460f45369c9daf90e65876f7-20190430 X-UUID: 4026ac42460f45369c9daf90e65876f7-20190430 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1179172606; Tue, 30 Apr 2019 03:21:38 -0800 Received: from mtkmbs08n2.mediatek.inc (172.21.101.56) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 30 Apr 2019 04:21:37 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 30 Apr 2019 19:21:29 +0800 Received: from mtkslt207.mediatek.inc (10.21.15.94) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 30 Apr 2019 19:21:29 +0800 From: Roger Lu To: Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , "Rafael J . Wysocki" Subject: [RFC v1 3/3] PM / AVS: SVS: Introduce SVS engine Date: Tue, 30 Apr 2019 19:20:12 +0800 Message-ID: <20190430112012.4514-4-roger.lu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190430112012.4514-1-roger.lu@mediatek.com> References: <20190430112012.4514-1-roger.lu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 33CF45CB85BA85B8A05DDD5AA81450BC9CD814033C69937F7550668B5FB2CE482000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190430_042145_288765_7DE94BDC X-CRM114-Status: GOOD ( 19.24 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Nishanth Menon , devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Kevin Hilman , Roger Lu , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The SVS (Smart Voltage Scaling) engine is a piece of hardware which is used to calculate optimized voltage values of several power domains, e.g. CPU/GPU/CCI, according to chip process corner, temperatures, and other factors. Then DVFS driver could apply those optimized voltage values to reduce power consumption. Signed-off-by: Roger Lu --- drivers/power/avs/Kconfig | 10 + drivers/power/avs/Makefile | 1 + drivers/power/avs/mtk_svs.c | 2084 +++++++++++++++++++++++++++++++++ include/linux/power/mtk_svs.h | 23 + 4 files changed, 2118 insertions(+) create mode 100644 drivers/power/avs/mtk_svs.c create mode 100644 include/linux/power/mtk_svs.h diff --git a/drivers/power/avs/Kconfig b/drivers/power/avs/Kconfig index a67eeace6a89..da9baf5b5a03 100644 --- a/drivers/power/avs/Kconfig +++ b/drivers/power/avs/Kconfig @@ -18,3 +18,13 @@ config ROCKCHIP_IODOMAIN Say y here to enable support io domains on Rockchip SoCs. It is necessary for the io domain setting of the SoC to match the voltage supplied by the regulators. + +config MTK_SVS + bool "MediaTek Smart Voltage Scaling(SVS)" + depends on POWER_AVS && MTK_EFUSE + help + The SVS engine is a piece of hardware which is used to calculate + optimized voltage values of several power domains, e.g. + CPU clusters/GPU/CCI, according to chip process corner, temperatures, + and other factors. Then DVFS driver could apply those optimized voltage + values to reduce power consumption. diff --git a/drivers/power/avs/Makefile b/drivers/power/avs/Makefile index ba4c7bc69225..b487701cc4a6 100644 --- a/drivers/power/avs/Makefile +++ b/drivers/power/avs/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_POWER_AVS_OMAP) += smartreflex.o obj-$(CONFIG_ROCKCHIP_IODOMAIN) += rockchip-io-domain.o +obj-$(CONFIG_MTK_SVS) += mtk_svs.o diff --git a/drivers/power/avs/mtk_svs.c b/drivers/power/avs/mtk_svs.c new file mode 100644 index 000000000000..96a9331973a0 --- /dev/null +++ b/drivers/power/avs/mtk_svs.c @@ -0,0 +1,2084 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 MediaTek Inc. + */ + +#define pr_fmt(fmt) "[mtk_svs] " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define SVS_INIT01_VOLT_IGNORE 1 +#define SVS_INIT01_VOLT_INC_ONLY 2 + +#define SVS_PHASE_INIT01 0 +#define SVS_PHASE_INIT02 1 +#define SVS_PHASE_MON 2 +#define SVS_PHASE_ERROR 3 + +#define SVS_CPU_LITTLE 1 +#define SVS_CPU_BIG 2 +#define SVS_CCI 3 +#define SVS_GPU 4 + +#define proc_fops_rw(name) \ + static int name ## _proc_open(struct inode *inode, \ + struct file *file) \ + { \ + return single_open(file, name ## _proc_show, \ + PDE_DATA(inode)); \ + } \ + static const struct file_operations name ## _proc_fops = { \ + .owner = THIS_MODULE, \ + .open = name ## _proc_open, \ + .read = seq_read, \ + .llseek = seq_lseek, \ + .release = single_release, \ + .write = name ## _proc_write, \ + } + +#define proc_fops_ro(name) \ + static int name ## _proc_open(struct inode *inode, \ + struct file *file) \ + { \ + return single_open(file, name ## _proc_show, \ + PDE_DATA(inode)); \ + } \ + static const struct file_operations name ## _proc_fops = { \ + .owner = THIS_MODULE, \ + .open = name ## _proc_open, \ + .read = seq_read, \ + .llseek = seq_lseek, \ + .release = single_release, \ + } + +#define proc_entry(name) {__stringify(name), &name ## _proc_fops} + +static DEFINE_SPINLOCK(mtk_svs_lock); +struct mtk_svs; + +enum reg_index { + TEMPMONCTL0 = 0, + TEMPMONCTL1, + TEMPMONCTL2, + TEMPMONINT, + TEMPMONINTSTS, + TEMPMONIDET0, + TEMPMONIDET1, + TEMPMONIDET2, + TEMPH2NTHRE, + TEMPHTHRE, + TEMPCTHRE, + TEMPOFFSETH, + TEMPOFFSETL, + TEMPMSRCTL0, + TEMPMSRCTL1, + TEMPAHBPOLL, + TEMPAHBTO, + TEMPADCPNP0, + TEMPADCPNP1, + TEMPADCPNP2, + TEMPADCMUX, + TEMPADCEXT, + TEMPADCEXT1, + TEMPADCEN, + TEMPPNPMUXADDR, + TEMPADCMUXADDR, + TEMPADCEXTADDR, + TEMPADCEXT1ADDR, + TEMPADCENADDR, + TEMPADCVALIDADDR, + TEMPADCVOLTADDR, + TEMPRDCTRL, + TEMPADCVALIDMASK, + TEMPADCVOLTAGESHIFT, + TEMPADCWRITECTRL, + TEMPMSR0, + TEMPMSR1, + TEMPMSR2, + TEMPADCHADDR, + TEMPIMMD0, + TEMPIMMD1, + TEMPIMMD2, + TEMPMONIDET3, + TEMPADCPNP3, + TEMPMSR3, + TEMPIMMD3, + TEMPPROTCTL, + TEMPPROTTA, + TEMPPROTTB, + TEMPPROTTC, + TEMPSPARE0, + TEMPSPARE1, + TEMPSPARE2, + TEMPSPARE3, + TEMPMSR0_1, + TEMPMSR1_1, + TEMPMSR2_1, + TEMPMSR3_1, + DESCHAR, + TEMPCHAR, + DETCHAR, + AGECHAR, + DCCONFIG, + AGECONFIG, + FREQPCT30, + FREQPCT74, + LIMITVALS, + VBOOT, + DETWINDOW, + CONFIG, + TSCALCS, + RUNCONFIG, + SVSEN, + INIT2VALS, + DCVALUES, + AGEVALUES, + VOP30, + VOP74, + TEMP, + INTSTS, + INTSTSRAW, + INTEN, + CHKINT, + CHKSHIFT, + STATUS, + VDESIGN30, + VDESIGN74, + DVT30, + DVT74, + AGECOUNT, + SMSTATE0, + SMSTATE1, + CTL0, + DESDETSEC, + TEMPAGESEC, + CTRLSPARE0, + CTRLSPARE1, + CTRLSPARE2, + CTRLSPARE3, + CORESEL, + THERMINTST, + INTST, + THSTAGE0ST, + THSTAGE1ST, + THSTAGE2ST, + THAHBST0, + THAHBST1, + SPARE0, + SPARE1, + SPARE2, + SPARE3, + THSLPEVEB, + reg_num, +}; + +static const u32 svs_regs_v2[] = { + [TEMPMONCTL0] = 0x000, + [TEMPMONCTL1] = 0x004, + [TEMPMONCTL2] = 0x008, + [TEMPMONINT] = 0x00c, + [TEMPMONINTSTS] = 0x010, + [TEMPMONIDET0] = 0x014, + [TEMPMONIDET1] = 0x018, + [TEMPMONIDET2] = 0x01c, + [TEMPH2NTHRE] = 0x024, + [TEMPHTHRE] = 0x028, + [TEMPCTHRE] = 0x02c, + [TEMPOFFSETH] = 0x030, + [TEMPOFFSETL] = 0x034, + [TEMPMSRCTL0] = 0x038, + [TEMPMSRCTL1] = 0x03c, + [TEMPAHBPOLL] = 0x040, + [TEMPAHBTO] = 0x044, + [TEMPADCPNP0] = 0x048, + [TEMPADCPNP1] = 0x04c, + [TEMPADCPNP2] = 0x050, + [TEMPADCMUX] = 0x054, + [TEMPADCEXT] = 0x058, + [TEMPADCEXT1] = 0x05c, + [TEMPADCEN] = 0x060, + [TEMPPNPMUXADDR] = 0x064, + [TEMPADCMUXADDR] = 0x068, + [TEMPADCEXTADDR] = 0x06c, + [TEMPADCEXT1ADDR] = 0x070, + [TEMPADCENADDR] = 0x074, + [TEMPADCVALIDADDR] = 0x078, + [TEMPADCVOLTADDR] = 0x07c, + [TEMPRDCTRL] = 0x080, + [TEMPADCVALIDMASK] = 0x084, + [TEMPADCVOLTAGESHIFT] = 0x088, + [TEMPADCWRITECTRL] = 0x08c, + [TEMPMSR0] = 0x090, + [TEMPMSR1] = 0x094, + [TEMPMSR2] = 0x098, + [TEMPADCHADDR] = 0x09c, + [TEMPIMMD0] = 0x0a0, + [TEMPIMMD1] = 0x0a4, + [TEMPIMMD2] = 0x0a8, + [TEMPMONIDET3] = 0x0b0, + [TEMPADCPNP3] = 0x0b4, + [TEMPMSR3] = 0x0b8, + [TEMPIMMD3] = 0x0bc, + [TEMPPROTCTL] = 0x0c0, + [TEMPPROTTA] = 0x0c4, + [TEMPPROTTB] = 0x0c8, + [TEMPPROTTC] = 0x0cc, + [TEMPSPARE0] = 0x0f0, + [TEMPSPARE1] = 0x0f4, + [TEMPSPARE2] = 0x0f8, + [TEMPSPARE3] = 0x0fc, + [TEMPMSR0_1] = 0x190, + [TEMPMSR1_1] = 0x194, + [TEMPMSR2_1] = 0x198, + [TEMPMSR3_1] = 0x1b8, + [DESCHAR] = 0xc00, + [TEMPCHAR] = 0xc04, + [DETCHAR] = 0xc08, + [AGECHAR] = 0xc0c, + [DCCONFIG] = 0xc10, + [AGECONFIG] = 0xc14, + [FREQPCT30] = 0xc18, + [FREQPCT74] = 0xc1c, + [LIMITVALS] = 0xc20, + [VBOOT] = 0xc24, + [DETWINDOW] = 0xc28, + [CONFIG] = 0xc2c, + [TSCALCS] = 0xc30, + [RUNCONFIG] = 0xc34, + [SVSEN] = 0xc38, + [INIT2VALS] = 0xc3c, + [DCVALUES] = 0xc40, + [AGEVALUES] = 0xc44, + [VOP30] = 0xc48, + [VOP74] = 0xc4c, + [TEMP] = 0xc50, + [INTSTS] = 0xc54, + [INTSTSRAW] = 0xc58, + [INTEN] = 0xc5c, + [CHKINT] = 0xc60, + [CHKSHIFT] = 0xc64, + [STATUS] = 0xc68, + [VDESIGN30] = 0xc6c, + [VDESIGN74] = 0xc70, + [DVT30] = 0xc74, + [DVT74] = 0xc78, + [AGECOUNT] = 0xc7c, + [SMSTATE0] = 0xc80, + [SMSTATE1] = 0xc84, + [CTL0] = 0xc88, + [DESDETSEC] = 0xce0, + [TEMPAGESEC] = 0xce4, + [CTRLSPARE0] = 0xcf0, + [CTRLSPARE1] = 0xcf4, + [CTRLSPARE2] = 0xcf8, + [CTRLSPARE3] = 0xcfc, + [CORESEL] = 0xf00, + [THERMINTST] = 0xf04, + [INTST] = 0xf08, + [THSTAGE0ST] = 0xf0c, + [THSTAGE1ST] = 0xf10, + [THSTAGE2ST] = 0xf14, + [THAHBST0] = 0xf18, + [THAHBST1] = 0xf1c, + [SPARE0] = 0xf20, + [SPARE1] = 0xf24, + [SPARE2] = 0xf28, + [SPARE3] = 0xf2c, + [THSLPEVEB] = 0xf30, +}; + +struct thermal_parameter { + int adc_ge_t; + int adc_oe_t; + int ge; + int oe; + int gain; + int o_vtsabb; + int o_vtsmcu1; + int o_vtsmcu2; + int o_vtsmcu3; + int o_vtsmcu4; + int o_vtsmcu5; + int degc_cali; + int adc_cali_en_t; + int o_slope; + int o_slope_sign; + int ts_id; +}; + +struct svs_bank_ops { + void (*set_freqs_pct)(struct mtk_svs *svs); + void (*get_vops)(struct mtk_svs *svs); +}; + +struct svs_bank { + struct svs_bank_ops *ops; + struct completion init_completion; + struct device *dev; + struct regulator *buck; + struct mutex lock; /* lock to protect update voltage process */ + bool suspended; + bool mtcmos_request; + bool init01_support; + bool init02_support; + bool mon_mode_support; + s32 volt_offset; + u32 *opp_freqs; + u32 *freqs_pct; + u32 *opp_volts; + u32 *init02_volts; + u32 *volts; + u32 reg_data[3][reg_num]; + u32 freq_base; + u32 vboot; + u32 volt_step; + u32 volt_base; + u32 init01_volt_flag; + u32 phase; + u32 vmax; + u32 vmin; + u32 bts; + u32 mts; + u32 bdes; + u32 mdes; + u32 mtdes; + u32 dcbdet; + u32 dcmdet; + u32 dthi; + u32 dtlo; + u32 det_window; + u32 det_max; + u32 age_config; + u32 age_voffset_in; + u32 agem; + u32 dc_config; + u32 dc_voffset_in; + u32 dvt_fixed; + u32 vco; + u32 chkshift; + u32 svs_temp; + u32 upper_temp_bound; + u32 lower_temp_bound; + u32 low_temp_threashold; + u32 low_temp_offset; + u32 coresel; + u32 opp_count; + u32 intst; + u32 systemclk_en; + u32 sw_id; + u32 hw_id; + u32 ctl0; + u8 *of_compatible; + u8 *name; + u8 *zone_name; + u8 *buck_name; +}; + +struct svs_platform { + struct svs_bank *banks; + int (*efuse_parsing)(struct mtk_svs *svs); + bool fake_efuse; + const u32 *regs; + u32 bank_num; + u32 efuse_num; + u32 efuse_check; + u32 thermal_efuse_num; + u8 *name; +}; + +struct mtk_svs { + const struct svs_platform *platform; + struct svs_bank *bank; + struct device *dev; + void __iomem *base; + struct clk *main_clk; + u32 *efuse; + u32 *thermal_efuse; +}; + +unsigned long claim_mtk_svs_lock(void) +{ + unsigned long flags; + + spin_lock_irqsave(&mtk_svs_lock, flags); + + return flags; +} +EXPORT_SYMBOL_GPL(claim_mtk_svs_lock); + +void release_mtk_svs_lock(unsigned long flags) +{ + spin_unlock_irqrestore(&mtk_svs_lock, flags); +} +EXPORT_SYMBOL_GPL(release_mtk_svs_lock); + +static u32 percent(u32 numerator, u32 denominator) +{ + u32 percent; + + /* If not divide 1000, "numerator * 100" would be data overflow. */ + numerator /= 1000; + denominator /= 1000; + percent = ((numerator * 100) + denominator - 1) / denominator; + + return percent; +} + +static u32 svs_readl(struct mtk_svs *svs, enum reg_index i) +{ + return readl(svs->base + svs->platform->regs[i]); +} + +static void svs_writel(struct mtk_svs *svs, u32 val, enum reg_index i) +{ + writel(val, svs->base + svs->platform->regs[i]); +} + +static void svs_switch_bank(struct mtk_svs *svs) +{ + struct svs_bank *svsb = svs->bank; + + svs_writel(svs, svsb->coresel, CORESEL); +} + +static u32 svs_volt_to_opp_volt(u32 svsb_volt, + u32 svsb_volt_step, u32 svsb_volt_base) +{ + u32 u_volt; + + u_volt = (svsb_volt * svsb_volt_step) + svsb_volt_base; + + return u_volt; +} + +static int svs_get_zone_temperature(struct svs_bank *svsb, int *zone_temp) +{ + struct thermal_zone_device *tzd; + int ret; + + tzd = thermal_zone_get_zone_by_name(svsb->zone_name); + ret = thermal_zone_get_temp(tzd, zone_temp); + + return ret; +} + +static int svs_set_volts(struct svs_bank *svsb, bool force_update) +{ + u32 i, svsb_volt, opp_volt, low_temp_offset = 0; + int zone_temp, ret; + + mutex_lock(&svsb->lock); + + /* If bank is suspended, it means init02 voltage is applied. + * Don't need to update opp voltage anymore. + */ + if (svsb->suspended && !force_update) { + pr_notice("%s: bank is suspended\n", svsb->name); + mutex_unlock(&svsb->lock); + return -EPERM; + } + + /* get thermal effect */ + if (svsb->phase == SVS_PHASE_MON) { + if (svsb->svs_temp > svsb->upper_temp_bound && + svsb->svs_temp < svsb->lower_temp_bound) { + pr_err("%s: svs_temp is abnormal (0x%x)?\n", + svsb->name, svsb->svs_temp); + mutex_unlock(&svsb->lock); + return -EINVAL; + } + + ret = svs_get_zone_temperature(svsb, &zone_temp); + if (ret) { + pr_err("%s: cannot get zone \"%s\" temperature\n", + svsb->name, svsb->zone_name); + pr_err("%s: add low_temp_offset = %u\n", + svsb->name, svsb->low_temp_offset); + zone_temp = svsb->low_temp_threashold; + } + + if (zone_temp <= svsb->low_temp_threashold) + low_temp_offset = svsb->low_temp_offset; + } + + /* vmin <= svsb_volt (opp_volt) <= signed-off voltage */ + for (i = 0; i < svsb->opp_count; i++) { + if (svsb->phase == SVS_PHASE_MON) { + svsb_volt = max((svsb->volts[i] + svsb->volt_offset + + low_temp_offset), svsb->vmin); + opp_volt = svs_volt_to_opp_volt(svsb_volt, + svsb->volt_step, + svsb->volt_base); + } else if (svsb->phase == SVS_PHASE_INIT02) { + svsb_volt = max((svsb->init02_volts[i] + + svsb->volt_offset), svsb->vmin); + opp_volt = svs_volt_to_opp_volt(svsb_volt, + svsb->volt_step, + svsb->volt_base); + } else if (svsb->phase == SVS_PHASE_ERROR) { + opp_volt = svsb->opp_volts[i]; + } else { + pr_err("%s: unknown phase: %u?\n", + svsb->name, svsb->phase); + mutex_unlock(&svsb->lock); + return -EINVAL; + } + + opp_volt = min(opp_volt, svsb->opp_volts[i]); + ret = dev_pm_opp_adjust_voltage(svsb->dev, svsb->opp_freqs[i], + opp_volt); + if (ret) { + pr_err("%s: set voltage failed: %d\n", svsb->name, ret); + mutex_unlock(&svsb->lock); + return ret; + } + } + + mutex_unlock(&svsb->lock); + + return 0; +} + +static u32 interpolate(u32 f0, u32 f1, u32 v0, u32 v1, u32 fx) +{ + u32 vy; + + if (v0 == v1 || f0 == f1) + return v0; + + /* *100 to have decimal fraction factor, +99 for rounding up. */ + vy = (v0 * 100) - ((((v0 - v1) * 100) / (f0 - f1)) * (f0 - fx)); + vy = (vy + 99) / 100; + + return vy; +} + +static void svs_get_vops_v2(struct mtk_svs *svs) +{ + struct svs_bank *svsb = svs->bank; + u32 temp, i; + + temp = svs_readl(svs, VOP30); + svsb->volts[6] = (temp >> 24) & 0xff; + svsb->volts[4] = (temp >> 16) & 0xff; + svsb->volts[2] = (temp >> 8) & 0xff; + svsb->volts[0] = (temp & 0xff); + + temp = svs_readl(svs, VOP74); + svsb->volts[14] = (temp >> 24) & 0xff; + svsb->volts[12] = (temp >> 16) & 0xff; + svsb->volts[10] = (temp >> 8) & 0xff; + svsb->volts[8] = (temp & 0xff); + + for (i = 0; i <= 7; i++) { + if (i < 7) { + svsb->volts[(i * 2) + 1] = + interpolate(svsb->freqs_pct[i * 2], + svsb->freqs_pct[(i + 1) * 2], + svsb->volts[i * 2], + svsb->volts[(i + 1) * 2], + svsb->freqs_pct[(i * 2) + 1]); + } else if (i == 7) { + svsb->volts[(i * 2) + 1] = + interpolate(svsb->freqs_pct[(i - 1) * 2], + svsb->freqs_pct[i * 2], + svsb->volts[(i - 1) * 2], + svsb->volts[i * 2], + svsb->freqs_pct[(i * 2) + 1]); + } + } +} + +static void svs_set_freqs_pct_v2(struct mtk_svs *svs) +{ + struct svs_bank *svsb = svs->bank; + + svs_writel(svs, + ((svsb->freqs_pct[6] << 24) & 0xff000000) | + ((svsb->freqs_pct[4] << 16) & 0xff0000) | + ((svsb->freqs_pct[2] << 8) & 0xff00) | + (svsb->freqs_pct[0] & 0xff), + FREQPCT30); + svs_writel(svs, + ((svsb->freqs_pct[14] << 24) & 0xff000000) | + ((svsb->freqs_pct[12] << 16) & 0xff0000) | + ((svsb->freqs_pct[10] << 8) & 0xff00) | + ((svsb->freqs_pct[8]) & 0xff), + FREQPCT74); +} + +static void svs_set_phase(struct mtk_svs *svs, u32 target_phase) +{ + struct svs_bank *svsb = svs->bank; + u32 des_char, temp_char, det_char, limit_vals; + u32 init2vals, ts_calcs, val, filter, i; + + svs_switch_bank(svs); + + des_char = ((svsb->bdes << 8) & 0xff00) | (svsb->mdes & 0xff); + svs_writel(svs, des_char, DESCHAR); + + temp_char = ((svsb->vco << 16) & 0xff0000) | + ((svsb->mtdes << 8) & 0xff00) | + (svsb->dvt_fixed & 0xff); + svs_writel(svs, temp_char, TEMPCHAR); + + det_char = ((svsb->dcbdet << 8) & 0xff00) | (svsb->dcmdet & 0xff); + svs_writel(svs, det_char, DETCHAR); + + svs_writel(svs, svsb->dc_config, DCCONFIG); + svs_writel(svs, svsb->age_config, AGECONFIG); + + if (svsb->agem == 0x0) { + svs_writel(svs, 0x80000000, RUNCONFIG); + } else { + val = 0x0; + + for (i = 0; i < 24; i += 2) { + filter = 0x3 << i; + + if ((svsb->age_config & filter) == 0x0) + val |= (0x1 << i); + else + val |= (svsb->age_config & filter); + } + svs_writel(svs, val, RUNCONFIG); + } + + svsb->ops->set_freqs_pct(svs); + + limit_vals = ((svsb->vmax << 24) & 0xff000000) | + ((svsb->vmin << 16) & 0xff0000) | + ((svsb->dthi << 8) & 0xff00) | + (svsb->dtlo & 0xff); + svs_writel(svs, limit_vals, LIMITVALS); + svs_writel(svs, (svsb->vboot & 0xff), VBOOT); + svs_writel(svs, (svsb->det_window & 0xffff), DETWINDOW); + svs_writel(svs, (svsb->det_max & 0xffff), CONFIG); + + if (svsb->chkshift != 0) + svs_writel(svs, (svsb->chkshift & 0xff), CHKSHIFT); + + if (svsb->ctl0 != 0) + svs_writel(svs, svsb->ctl0, CTL0); + + svs_writel(svs, 0x00ffffff, INTSTS); + + switch (target_phase) { + case SVS_PHASE_INIT01: + svs_writel(svs, 0x00005f01, INTEN); + svs_writel(svs, 0x00000001, SVSEN); + break; + case SVS_PHASE_INIT02: + svs_writel(svs, 0x00005f01, INTEN); + init2vals = ((svsb->age_voffset_in << 16) & 0xffff0000) | + (svsb->dc_voffset_in & 0xffff); + svs_writel(svs, init2vals, INIT2VALS); + svs_writel(svs, 0x00000005, SVSEN); + break; + case SVS_PHASE_MON: + ts_calcs = ((svsb->bts << 12) & 0xfff000) | (svsb->mts & 0xfff); + svs_writel(svs, ts_calcs, TSCALCS); + svs_writel(svs, 0x00FF0000, INTEN); + svs_writel(svs, 0x00000002, SVSEN); + break; + default: + WARN_ON(1); + break; + } +} + +static inline void svs_init01_isr_handler(struct mtk_svs *svs) +{ + struct svs_bank *svsb = svs->bank; + enum reg_index rg_i; + + pr_notice("%s: %s: VDN74:0x%08x, VDN30:0x%08x, DCVALUES:0x%08x\n", + svsb->name, __func__, svs_readl(svs, VDESIGN74), + svs_readl(svs, VDESIGN30), svs_readl(svs, DCVALUES)); + + for (rg_i = TEMPMONCTL0; rg_i < reg_num; rg_i++) + svsb->reg_data[SVS_PHASE_INIT01][rg_i] = svs_readl(svs, rg_i); + + svsb->dc_voffset_in = ~(svs_readl(svs, DCVALUES) & 0xffff) + 1; + if (svsb->init01_volt_flag == SVS_INIT01_VOLT_IGNORE) + svsb->dc_voffset_in = 0; + else if ((svsb->dc_voffset_in & 0x8000) && + (svsb->init01_volt_flag == SVS_INIT01_VOLT_INC_ONLY)) + svsb->dc_voffset_in = 0; + + svsb->age_voffset_in = svs_readl(svs, AGEVALUES) & 0xffff; + + svs_writel(svs, 0x0, SVSEN); + svs_writel(svs, 0x1, INTSTS); + + /* svs init01 clock gating */ + svsb->coresel &= ~svsb->systemclk_en; + + svsb->phase = SVS_PHASE_INIT01; + complete(&svsb->init_completion); +} + +static inline void svs_init02_isr_handler(struct mtk_svs *svs) +{ + struct svs_bank *svsb = svs->bank; + enum reg_index rg_i; + + pr_notice("%s: %s: VOP74:0x%08x, VOP30:0x%08x, DCVALUES:0x%08x\n", + svsb->name, __func__, svs_readl(svs, VOP74), + svs_readl(svs, VOP30), svs_readl(svs, DCVALUES)); + + for (rg_i = TEMPMONCTL0; rg_i < reg_num; rg_i++) + svsb->reg_data[SVS_PHASE_INIT02][rg_i] = svs_readl(svs, rg_i); + + svsb->ops->get_vops(svs); + memcpy(svsb->init02_volts, svsb->volts, 4 * svsb->opp_count); + svsb->phase = SVS_PHASE_INIT02; + + svs_writel(svs, 0x0, SVSEN); + svs_writel(svs, 0x1, INTSTS); + + complete(&svsb->init_completion); +} + +static inline void svs_mon_mode_isr_handler(struct mtk_svs *svs) +{ + struct svs_bank *svsb = svs->bank; + enum reg_index rg_i; + + for (rg_i = TEMPMONCTL0; rg_i < reg_num; rg_i++) + svsb->reg_data[SVS_PHASE_MON][rg_i] = svs_readl(svs, rg_i); + + svsb->svs_temp = svs_readl(svs, TEMP) & 0xff; + + svsb->ops->get_vops(svs); + svsb->phase = SVS_PHASE_MON; + + svs_writel(svs, 0x00ff0000, INTSTS); +} + +static inline void svs_error_isr_handler(struct mtk_svs *svs) +{ + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb = svs->bank; + enum reg_index rg_i; + + pr_err("%s(): %s(%s)", __func__, svsp->name, svsb->name); + pr_err("CORESEL(0x%x) = 0x%08x\n", + svsp->regs[CORESEL], svs_readl(svs, CORESEL)), + pr_err("SVSEN(0x%x) = 0x%08x, INTSTS(0x%x) = 0x%08x\n", + svsp->regs[SVSEN], svs_readl(svs, SVSEN), + svsp->regs[INTSTS], svs_readl(svs, INTSTS)); + pr_err("SMSTATE0(0x%x) = 0x%08x, SMSTATE1(0x%x) = 0x%08x\n", + svsp->regs[SMSTATE0], svs_readl(svs, SMSTATE0), + svsp->regs[SMSTATE1], svs_readl(svs, SMSTATE1)); + + for (rg_i = TEMPMONCTL0; rg_i < reg_num; rg_i++) + svsb->reg_data[SVS_PHASE_MON][rg_i] = svs_readl(svs, rg_i); + + svsb->init01_support = false; + svsb->init02_support = false; + svsb->mon_mode_support = false; + + if (svsb->phase == SVS_PHASE_MON) + svsb->phase = SVS_PHASE_INIT02; + + svs_writel(svs, 0x0, SVSEN); + svs_writel(svs, 0x00ffffff, INTSTS); +} + +static inline void svs_isr_handler(struct mtk_svs *svs) +{ + u32 intsts, svsen; + + svs_switch_bank(svs); + + intsts = svs_readl(svs, INTSTS); + svsen = svs_readl(svs, SVSEN); + + if (intsts == 0x1 && ((svsen & 0x7) == 0x1)) + svs_init01_isr_handler(svs); + else if ((intsts == 0x1) && ((svsen & 0x7) == 0x5)) + svs_init02_isr_handler(svs); + else if ((intsts & 0x00ff0000) != 0x0) + svs_mon_mode_isr_handler(svs); + else + svs_error_isr_handler(svs); +} + +static irqreturn_t svs_isr(int irq, void *data) +{ + struct mtk_svs *svs = (struct mtk_svs *)data; + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb = NULL; + unsigned long flags; + u32 idx; + + flags = claim_mtk_svs_lock(); + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svs->bank = svsb; + + if (svsb->suspended) + continue; + else if (svsb->intst & svs_readl(svs, INTST)) + continue; + + svs_isr_handler(svs); + break; + } + release_mtk_svs_lock(flags); + + if (svsb->phase != SVS_PHASE_INIT01) + svs_set_volts(svsb, false); + + return IRQ_HANDLED; +} + +static void svs_mon_mode(struct mtk_svs *svs) +{ + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + unsigned long flags; + u32 idx; + + flags = claim_mtk_svs_lock(); + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svs->bank = svsb; + + if (!svsb->mon_mode_support) + continue; + + svs_set_phase(svs, SVS_PHASE_MON); + } + release_mtk_svs_lock(flags); +} + +static int svs_init02(struct mtk_svs *svs) +{ + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + unsigned long flags, time_left; + u32 idx; + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svs->bank = svsb; + + if (!svsb->init02_support) + continue; + + reinit_completion(&svsb->init_completion); + flags = claim_mtk_svs_lock(); + svs_set_phase(svs, SVS_PHASE_INIT02); + release_mtk_svs_lock(flags); + time_left = + wait_for_completion_timeout(&svsb->init_completion, + msecs_to_jiffies(2000)); + if (time_left == 0) { + pr_err("%s: init02 completion timeout\n", svsb->name); + return -EBUSY; + } + } + + return 0; +} + +static int svs_init01(struct mtk_svs *svs) +{ + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + struct pm_qos_request qos_request = { {0} }; + unsigned long flags, time_left; + bool search_done; + int ret = -EINVAL; + u32 opp_freqs, opp_vboot, buck_volt, idx, i; + + /* Let CPUs leave idle-off state for initializing svs_init01. */ + pm_qos_add_request(&qos_request, PM_QOS_CPU_DMA_LATENCY, 0); + + /* Sometimes two svs_bank use the same buck. + * Therefore, we set each svs_bank to vboot voltage first. + */ + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + search_done = false; + + if (!svsb->init01_support) + continue; + + ret = regulator_set_mode(svsb->buck, REGULATOR_MODE_FAST); + if (ret) + pr_notice("%s: fail to set fast mode: %d\n", + svsb->name, ret); + + if (svsb->mtcmos_request) { + ret = regulator_enable(svsb->buck); + if (ret) { + pr_err("%s: fail to enable %s power: %d\n", + svsb->name, svsb->buck_name, ret); + goto err_init; + } + + ret = dev_pm_domain_attach(svsb->dev, false); + if (ret) { + pr_err("%s: attach pm domain fail: %d\n", + svsb->name, ret); + goto err_init; + } + + pm_runtime_enable(svsb->dev); + ret = pm_runtime_get_sync(svsb->dev); + if (ret < 0) { + pr_err("%s: turn mtcmos on fail: %d\n", + svsb->name, ret); + goto err_init; + } + } + + /* Find the fastest freq that can be run at vboot and + * fix to that freq until svs_init01 is done. + */ + opp_vboot = svs_volt_to_opp_volt(svsb->vboot, + svsb->volt_step, + svsb->volt_base); + + for (i = 0; i < svsb->opp_count; i++) { + opp_freqs = svsb->opp_freqs[i]; + if (!search_done && svsb->opp_volts[i] <= opp_vboot) { + ret = dev_pm_opp_adjust_voltage(svsb->dev, + opp_freqs, + opp_vboot); + if (ret) { + pr_err("%s: set voltage failed: %d\n", + svsb->name, ret); + goto err_init; + } + + search_done = true; + } else { + dev_pm_opp_disable(svsb->dev, + svsb->opp_freqs[i]); + } + } + } + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svs->bank = svsb; + + if (!svsb->init01_support) + continue; + + opp_vboot = svs_volt_to_opp_volt(svsb->vboot, + svsb->volt_step, + svsb->volt_base); + + buck_volt = regulator_get_voltage(svsb->buck); + if (buck_volt != opp_vboot) { + pr_err("%s: buck voltage: %u, expected vboot: %u\n", + svsb->name, buck_volt, opp_vboot); + ret = -EPERM; + goto err_init; + } + + init_completion(&svsb->init_completion); + flags = claim_mtk_svs_lock(); + svs_set_phase(svs, SVS_PHASE_INIT01); + release_mtk_svs_lock(flags); + time_left = + wait_for_completion_timeout(&svsb->init_completion, + msecs_to_jiffies(2000)); + if (time_left == 0) { + pr_err("%s: init01 completion timeout\n", svsb->name); + ret = -EBUSY; + goto err_init; + } + } + +err_init: + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + + if (!svsb->init01_support) + continue; + + for (i = 0; i < svsb->opp_count; i++) + dev_pm_opp_enable(svsb->dev, svsb->opp_freqs[i]); + + if (regulator_set_mode(svsb->buck, REGULATOR_MODE_NORMAL)) + pr_notice("%s: fail to set normal mode: %d\n", + svsb->name, ret); + + if (svsb->mtcmos_request) { + if (pm_runtime_put_sync(svsb->dev)) + pr_err("%s: turn mtcmos off fail: %d\n", + svsb->name, ret); + pm_runtime_disable(svsb->dev); + dev_pm_domain_detach(svsb->dev, 0); + if (regulator_disable(svsb->buck)) + pr_err("%s: fail to disable %s power: %d\n", + svsb->name, svsb->buck_name, ret); + } + } + + pm_qos_remove_request(&qos_request); + + return ret; +} + +static int svs_start(struct mtk_svs *svs) +{ + int ret; + + ret = svs_init01(svs); + if (ret) + return ret; + + ret = svs_init02(svs); + if (ret) + return ret; + + svs_mon_mode(svs); + + return ret; +} + +static int svs_mt8183_efuse_parsing(struct mtk_svs *svs) +{ + const struct svs_platform *svsp = svs->platform; + struct thermal_parameter tp; + struct svs_bank *svsb; + bool mon_mode_support = true; + int format[6], x_roomt[6], tb_roomt; + u32 idx, i, ft_pgm, mts, temp0, temp1, temp2; + + if (svsp->fake_efuse) { + svs->efuse[0] = 0x00110070; + svs->efuse[1] = 0xe7fcbb1b; + svs->efuse[2] = 0x478b47c7; + svs->efuse[3] = 0xabfbf757; + svs->efuse[4] = 0xe7fca4ed; + svs->efuse[5] = 0x47b84bc4; + svs->efuse[6] = 0xe7fcc3e9; + svs->efuse[7] = 0xe7fc9d0d; + svs->efuse[8] = 0x4bb84bf0; + svs->efuse[9] = 0xabfbdd79; + svs->efuse[16] = 0xe7fcb11c; + svs->efuse[17] = 0x47b847ff; + svs->efuse[18] = 0xabfbf557; + + svs->thermal_efuse[0] = 0x02bf5c65; + svs->thermal_efuse[1] = 0x9ede715f; + svs->thermal_efuse[2] = 0xb0d9acc0; + } + + /* svs efuse parsing */ + ft_pgm = (svs->efuse[0] >> 4) & 0xf; + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + if (ft_pgm <= 1) + svsb->init01_volt_flag = SVS_INIT01_VOLT_IGNORE; + + switch (svsb->sw_id) { + case SVS_CPU_LITTLE: + svsb->bdes = svs->efuse[16] & 0xff; + svsb->mdes = (svs->efuse[16] >> 8) & 0xff; + svsb->dcbdet = (svs->efuse[16] >> 16) & 0xff; + svsb->dcmdet = (svs->efuse[16] >> 24) & 0xff; + svsb->mtdes = (svs->efuse[17] >> 16) & 0xff; + + if (ft_pgm <= 3) + svsb->volt_offset += 10; + else + svsb->volt_offset += 2; + break; + case SVS_CPU_BIG: + svsb->bdes = svs->efuse[18] & 0xff; + svsb->mdes = (svs->efuse[18] >> 8) & 0xff; + svsb->dcbdet = (svs->efuse[18] >> 16) & 0xff; + svsb->dcmdet = (svs->efuse[18] >> 24) & 0xff; + svsb->mtdes = svs->efuse[17] & 0xff; + + if (ft_pgm <= 3) + svsb->volt_offset += 15; + else + svsb->volt_offset += 12; + break; + case SVS_CCI: + svsb->bdes = svs->efuse[4] & 0xff; + svsb->mdes = (svs->efuse[4] >> 8) & 0xff; + svsb->dcbdet = (svs->efuse[4] >> 16) & 0xff; + svsb->dcmdet = (svs->efuse[4] >> 24) & 0xff; + svsb->mtdes = (svs->efuse[5] >> 16) & 0xff; + + if (ft_pgm <= 3) + svsb->volt_offset += 10; + else + svsb->volt_offset += 2; + break; + case SVS_GPU: + svsb->bdes = svs->efuse[6] & 0xff; + svsb->mdes = (svs->efuse[6] >> 8) & 0xff; + svsb->dcbdet = (svs->efuse[6] >> 16) & 0xff; + svsb->dcmdet = (svs->efuse[6] >> 24) & 0xff; + svsb->mtdes = svs->efuse[5] & 0xff; + + if (ft_pgm >= 2) { + svsb->freq_base = 800000000; /* 800MHz */ + svsb->dvt_fixed = 2; + } + break; + default: + break; + } + } + + for (i = 0; i < svsp->efuse_num; i++) { + if (svs->efuse[i]) + pr_notice("M_HW_RES%d: 0x%08x\n", i, svs->efuse[i]); + } + + /* thermal efuse parsing */ + if (!svs->thermal_efuse) + return 0; + + tp.adc_ge_t = (svs->thermal_efuse[1] >> 22) & 0x3ff; + tp.adc_oe_t = (svs->thermal_efuse[1] >> 12) & 0x3ff; + + tp.o_vtsmcu1 = (svs->thermal_efuse[0] >> 17) & 0x1ff; + tp.o_vtsmcu2 = (svs->thermal_efuse[0] >> 8) & 0x1ff; + tp.o_vtsmcu3 = svs->thermal_efuse[1] & 0x1ff; + tp.o_vtsmcu4 = (svs->thermal_efuse[2] >> 23) & 0x1ff; + tp.o_vtsmcu5 = (svs->thermal_efuse[2] >> 5) & 0x1ff; + tp.o_vtsabb = (svs->thermal_efuse[2] >> 14) & 0x1ff; + + tp.degc_cali = (svs->thermal_efuse[0] >> 1) & 0x3f; + tp.adc_cali_en_t = svs->thermal_efuse[0] & BIT(0); + tp.o_slope_sign = (svs->thermal_efuse[0] >> 7) & BIT(0); + + tp.ts_id = (svs->thermal_efuse[1] >> 9) & BIT(0); + tp.o_slope = (svs->thermal_efuse[0] >> 26) & 0x3f; + + if (tp.adc_cali_en_t == 1) { + if (tp.ts_id == 0) + tp.o_slope = 0; + + if ((tp.adc_ge_t < 265 || tp.adc_ge_t > 758) || + (tp.adc_oe_t < 265 || tp.adc_oe_t > 758) || + (tp.o_vtsmcu1 < -8 || tp.o_vtsmcu1 > 484) || + (tp.o_vtsmcu2 < -8 || tp.o_vtsmcu2 > 484) || + (tp.o_vtsmcu3 < -8 || tp.o_vtsmcu3 > 484) || + (tp.o_vtsmcu4 < -8 || tp.o_vtsmcu4 > 484) || + (tp.o_vtsmcu5 < -8 || tp.o_vtsmcu5 > 484) || + (tp.o_vtsabb < -8 || tp.o_vtsabb > 484) || + (tp.degc_cali < 1 || tp.degc_cali > 63)) { + pr_err("bad thermal efuse data. disable mon mode\n"); + mon_mode_support = false; + } + } else { + pr_err("no thermal efuse data. disable mon mode\n"); + mon_mode_support = false; + } + + if (!mon_mode_support) { + for (i = 0; i < svsp->thermal_efuse_num; i++) + pr_err("thermal_efuse[%u] = 0x%08x\n", + i, svs->thermal_efuse[i]); + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svsb->mon_mode_support = false; + } + + return 0; + } + + tp.ge = ((tp.adc_ge_t - 512) * 10000) / 4096; + tp.oe = (tp.adc_oe_t - 512); + tp.gain = (10000 + tp.ge); + + format[0] = (tp.o_vtsmcu1 + 3350 - tp.oe); + format[1] = (tp.o_vtsmcu2 + 3350 - tp.oe); + format[2] = (tp.o_vtsmcu3 + 3350 - tp.oe); + format[3] = (tp.o_vtsmcu4 + 3350 - tp.oe); + format[4] = (tp.o_vtsmcu5 + 3350 - tp.oe); + format[5] = (tp.o_vtsabb + 3350 - tp.oe); + + for (i = 0; i < 6; i++) + x_roomt[i] = (((format[i] * 10000) / 4096) * 10000) / tp.gain; + + temp0 = (10000 * 100000 / tp.gain) * 15 / 18; + + if (tp.o_slope_sign == 0) + mts = (temp0 * 10) / (1534 + tp.o_slope * 10); + else + mts = (temp0 * 10) / (1534 - tp.o_slope * 10); + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svsb->mts = mts; + + switch (svsb->sw_id) { + case SVS_CPU_LITTLE: + tb_roomt = x_roomt[3]; + break; + case SVS_CPU_BIG: + tb_roomt = x_roomt[4]; + break; + case SVS_CCI: + tb_roomt = x_roomt[3]; + break; + case SVS_GPU: + tb_roomt = x_roomt[1]; + break; + default: + pr_err("unknown svsb_id = %u? disable svs\n", + svsb->sw_id); + return -EINVAL; + } + + temp0 = (tp.degc_cali * 10 / 2); + temp1 = ((10000 * 100000 / 4096 / tp.gain) * + tp.oe + tb_roomt * 10) * 15 / 18; + + if (tp.o_slope_sign == 0) + temp2 = temp1 * 100 / (1534 + tp.o_slope * 10); + else + temp2 = temp1 * 100 / (1534 - tp.o_slope * 10); + + svsb->bts = (temp0 + temp2 - 250) * 4 / 10; + } + + return 0; +} + +static int svs_is_support(struct mtk_svs *svs) +{ + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + struct nvmem_cell *cell; + size_t len; + int ret; + u32 idx, i; + + if (svsp->fake_efuse) { + len = svsp->efuse_num * 4; + svs->efuse = kzalloc(len, GFP_KERNEL); + if (!svs->efuse) + return -ENOMEM; + + len = svsp->thermal_efuse_num * 4; + svs->thermal_efuse = kzalloc(len, GFP_KERNEL); + if (!svs->thermal_efuse) + return -ENOMEM; + + goto svsp_efuse_parsing; + } + + /* get svs efuse by nvmem */ + cell = nvmem_cell_get(svs->dev, "svs-calibration-data"); + if (IS_ERR(cell)) { + pr_err("no \"svs-calibration-data\" from dts? disable svs\n"); + return PTR_ERR(cell); + } + + svs->efuse = (u32 *)nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); + + ret = (svs->efuse[svsp->efuse_check] == 0) ? -EPERM : 0; + if (ret) { + pr_err("no svs efuse. disable svs\n"); + for (i = 0; i < svsp->efuse_num; i++) + pr_err("M_HW_RES%d: 0x%08x\n", i, svs->efuse[i]); + return ret; + } + + /* get thermal efuse by nvmem */ + cell = nvmem_cell_get(svs->dev, "calibration-data"); + if (IS_ERR(cell)) { + pr_err("no \"calibration-data\" from dts? disable mon mode\n"); + svs->thermal_efuse = NULL; + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svsb->mon_mode_support = false; + } + goto svsp_efuse_parsing; + } + + svs->thermal_efuse = (u32 *)nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); + +svsp_efuse_parsing: + ret = svsp->efuse_parsing(svs); + + return ret; +} + +static int svs_resource_setup(struct mtk_svs *svs) +{ + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + struct platform_device *pdev; + struct device_node *np = NULL; + struct dev_pm_opp *opp; + unsigned long freq; + int count, ret; + u32 idx, i; + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + + if (!svsb->init01_support) + continue; + + switch (svsb->sw_id) { + case SVS_CPU_LITTLE: + svsb->name = "SVS_CPU_LITTLE"; + break; + case SVS_CPU_BIG: + svsb->name = "SVS_CPU_BIG"; + break; + case SVS_CCI: + svsb->name = "SVS_CCI"; + break; + case SVS_GPU: + svsb->name = "SVS_GPU"; + break; + default: + WARN_ON(1); + return -EINVAL; + } + + /* Add svs_bank device for opp-table/mtcmos/buck control */ + pdev = platform_device_alloc(svsb->name, 0); + if (!pdev) { + pr_err("%s: fail to alloc pdev for svs_bank\n", + svsb->name); + return -ENOMEM; + } + + for_each_child_of_node(svs->dev->of_node, np) { + if (of_device_is_compatible(np, svsb->of_compatible)) { + pdev->dev.of_node = np; + break; + } + } + + ret = platform_device_add(pdev); + if (ret) { + pr_err("%s: fail to add svs_bank device: %d\n", + svsb->name, ret); + return ret; + } + + svsb->dev = &pdev->dev; + dev_set_drvdata(svsb->dev, svs); + ret = dev_pm_opp_of_add_table(svsb->dev); + if (ret) { + pr_err("%s: fail to add opp table: %d\n", + svsb->name, ret); + return ret; + } + + mutex_init(&svsb->lock); + + svsb->buck = devm_regulator_get_optional(svsb->dev, + svsb->buck_name); + if (IS_ERR(svsb->buck)) { + pr_err("%s: cannot get regulator \"%s-supply\"\n", + svsb->name, svsb->buck_name); + return PTR_ERR(svsb->buck); + } + + count = dev_pm_opp_get_opp_count(svsb->dev); + if (svsb->opp_count != count) { + pr_err("%s: opp_count not \"%u\" but get \"%d\"?\n", + svsb->name, svsb->opp_count, count); + return count; + } + + svsb->opp_volts = kmalloc(4 * svsb->opp_count, + GFP_KERNEL); + if (IS_ERR(svsb->opp_volts)) { + pr_err("%s: fail kmalloc %u(bytes) to opp_volts\n", + svsb->name, (4 * svsb->opp_count)); + return PTR_ERR(svsb->opp_volts); + } + + svsb->init02_volts = kmalloc(4 * svsb->opp_count, + GFP_KERNEL); + if (IS_ERR(svsb->init02_volts)) { + pr_err("%s: fail kmalloc %u(bytes) to init02_volts\n", + svsb->name, (4 * svsb->opp_count)); + return PTR_ERR(svsb->init02_volts); + } + + svsb->volts = kmalloc(4 * svsb->opp_count, + GFP_KERNEL); + if (IS_ERR(svsb->volts)) { + pr_err("%s: fail kmalloc %u(bytes) to volts\n", + svsb->name, (4 * svsb->opp_count)); + return PTR_ERR(svsb->volts); + } + + svsb->opp_freqs = kmalloc(4 * svsb->opp_count, + GFP_KERNEL); + if (IS_ERR(svsb->opp_freqs)) { + pr_err("%s: fail kmalloc %u(bytes) to opp_freqs\n", + svsb->name, (4 * svsb->opp_count)); + return PTR_ERR(svsb->opp_freqs); + } + + svsb->freqs_pct = kmalloc(4 * svsb->opp_count, + GFP_KERNEL); + if (IS_ERR(svsb->freqs_pct)) { + pr_err("%s: fail kmalloc %u(bytes) to freqs_pct\n", + svsb->name, (4 * svsb->opp_count)); + return PTR_ERR(svsb->freqs_pct); + } + + for (i = 0, freq = (u32)-1; i < svsb->opp_count; i++, freq--) { + opp = dev_pm_opp_find_freq_floor(svsb->dev, &freq); + if (IS_ERR(opp)) { + pr_err("%s: error opp entry!!, err = %ld\n", + svsb->name, PTR_ERR(opp)); + return PTR_ERR(opp); + } + + svsb->opp_freqs[i] = freq; + svsb->opp_volts[i] = dev_pm_opp_get_voltage(opp); + svsb->freqs_pct[i] = percent(svsb->opp_freqs[i], + svsb->freq_base) & 0xff; + } + } + + return 0; +} + +static int svs_suspend(struct device *dev) +{ + struct mtk_svs *svs = dev_get_drvdata(dev); + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + unsigned long flags; + u32 idx; + + /* Wait if there is processing svs_isr(). Suspend all banks. */ + flags = claim_mtk_svs_lock(); + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svs->bank = svsb; + svs_switch_bank(svs); + svs_writel(svs, 0x0, SVSEN); + svs_writel(svs, 0x00ffffff, INTSTS); + svsb->suspended = true; + } + release_mtk_svs_lock(flags); + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + if (svsb->phase == SVS_PHASE_MON) { + svsb->phase = SVS_PHASE_INIT02; + svs_set_volts(svsb, true); + } + } + + clk_disable_unprepare(svs->main_clk); + + return 0; +} + +static int svs_resume(struct device *dev) +{ + struct mtk_svs *svs = dev_get_drvdata(dev); + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + int ret; + u32 idx; + + ret = clk_prepare_enable(svs->main_clk); + if (ret) + pr_err("%s(): cannot enable main_clk\n", __func__); + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + svsb->suspended = false; + } + + ret = svs_init02(svs); + if (ret) + return ret; + + svs_mon_mode(svs); + + return 0; +} + +static int svs_debug_proc_show(struct seq_file *m, void *v) +{ + struct svs_bank *svsb = (struct svs_bank *)m->private; + + if (svsb->phase == SVS_PHASE_INIT01) + seq_puts(m, "init01\n"); + else if (svsb->phase == SVS_PHASE_INIT02) + seq_puts(m, "init02\n"); + else if (svsb->phase == SVS_PHASE_MON) + seq_puts(m, "mon mode\n"); + else if (svsb->phase == SVS_PHASE_ERROR) + seq_puts(m, "disabled\n"); + else + seq_puts(m, "unknown\n"); + + return 0; +} + +static ssize_t svs_debug_proc_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *pos) +{ + struct svs_bank *svsb = (struct svs_bank *)PDE_DATA(file_inode(file)); + struct mtk_svs *svs = dev_get_drvdata(svsb->dev); + char *buf = (char *)__get_free_page(GFP_USER); + unsigned long flags; + int enabled, ret; + + if (svsb->phase == SVS_PHASE_ERROR) + return count; + + if (!buf) + return -ENOMEM; + + if (count >= PAGE_SIZE) { + free_page((unsigned long)buf); + return -EINVAL; + } + + if (copy_from_user(buf, buffer, count)) { + free_page((unsigned long)buf); + return -EFAULT; + } + + buf[count] = '\0'; + + ret = kstrtoint(buf, 10, &enabled); + if (ret) + return ret; + + if (!enabled) { + flags = claim_mtk_svs_lock(); + svs->bank = svsb; + + svsb->init01_support = false; + svsb->init02_support = false; + svsb->mon_mode_support = false; + + svs_switch_bank(svs); + svs_writel(svs, 0x0, SVSEN); + svs_writel(svs, 0x00ffffff, INTSTS); + release_mtk_svs_lock(flags); + } + + svsb->phase = SVS_PHASE_ERROR; + svs_set_volts(svsb, true); + + return count; +} + +proc_fops_rw(svs_debug); + +static int svs_dump_proc_show(struct seq_file *m, void *v) +{ + struct mtk_svs *svs = (struct mtk_svs *)m->private; + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + unsigned long svs_reg_addr; + u32 idx, i, j; + + for (i = 0; i < svsp->efuse_num; i++) { + if (svs->efuse[i]) + seq_printf(m, "M_HW_RES%d = 0x%08x\n", + i, svs->efuse[i]); + } + + for (i = 0; i < svsp->thermal_efuse_num; i++) { + if (svs->thermal_efuse[i]) + seq_printf(m, "THERMAL_EFUSE%d = 0x%08x\n", + i, svs->thermal_efuse[i]); + } + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + + if (!svsb->init01_support) + continue; + + for (i = SVS_PHASE_INIT01; i <= SVS_PHASE_MON; i++) { + seq_printf(m, "bank number = %u\n", svsb->hw_id); + + if (i < SVS_PHASE_MON) + seq_printf(m, "mode = init0%d\n", i + 1); + else + seq_puts(m, "mode = mon\n"); + + for (j = TEMPMONCTL0; j < reg_num; j++) { + svs_reg_addr = (unsigned long)(svs->base + + svsp->regs[j]); + seq_printf(m, "0x%08lx = 0x%08x\n", + svs_reg_addr, svsb->reg_data[i][j]); + } + } + } + + return 0; +} + +proc_fops_ro(svs_dump); + +static int svs_status_proc_show(struct seq_file *m, void *v) +{ + struct svs_bank *svsb = (struct svs_bank *)m->private; + struct dev_pm_opp *opp; + unsigned long freq; + int zone_temp, ret; + u32 i; + + ret = svs_get_zone_temperature(svsb, &zone_temp); + if (ret) + seq_printf(m, "%s: cannot get zone \"%s\" temperature\n", + svsb->name, svsb->zone_name); + else + seq_printf(m, "%s: temperature = %d\n", svsb->name, zone_temp); + + for (i = 0, freq = (u32)-1; i < svsb->opp_count; i++, freq--) { + opp = dev_pm_opp_find_freq_floor(svsb->dev, &freq); + if (IS_ERR(opp)) { + seq_printf(m, "%s: error opp entry!!, err = %ld\n", + svsb->name, PTR_ERR(opp)); + return PTR_ERR(opp); + } + + seq_printf(m, "opp_freqs[%02u]: %lu, volts[%02u]: %lu, ", + i, freq, i, dev_pm_opp_get_voltage(opp)); + seq_printf(m, "svsb_volts[%02u]: 0x%x, freqs_pct[%02u]: %u\n", + i, svsb->volts[i], i, svsb->freqs_pct[i]); + } + + return 0; +} + +proc_fops_ro(svs_status); + +static int svs_volt_offset_proc_show(struct seq_file *m, void *v) +{ + struct svs_bank *svsb = (struct svs_bank *)m->private; + + seq_printf(m, "%d\n", svsb->volt_offset); + + return 0; +} + +static ssize_t svs_volt_offset_proc_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *pos) +{ + struct svs_bank *svsb = (struct svs_bank *)PDE_DATA(file_inode(file)); + char *buf = (char *)__get_free_page(GFP_USER); + int ret, volt_offset; + + if (!buf) + return -ENOMEM; + + if (count >= PAGE_SIZE) { + free_page((unsigned long)buf); + return -EINVAL; + } + + if (copy_from_user(buf, buffer, count)) { + free_page((unsigned long)buf); + return -EFAULT; + } + + buf[count] = '\0'; + + if (!kstrtoint(buf, 10, &volt_offset)) { + svsb->volt_offset = volt_offset; + ret = svs_set_volts(svsb, true); + if (ret) + return ret; + } + + return count; +} + +proc_fops_rw(svs_volt_offset); + +static int svs_create_svs_procfs(struct mtk_svs *svs) +{ + const struct svs_platform *svsp = svs->platform; + struct svs_bank *svsb; + struct proc_dir_entry *svs_dir, *bank_dir; + u32 idx, i; + + struct pentry { + const char *name; + const struct file_operations *fops; + }; + + struct pentry svs_entries[] = { + proc_entry(svs_dump), + }; + + struct pentry bank_entries[] = { + proc_entry(svs_debug), + proc_entry(svs_status), + proc_entry(svs_volt_offset), + }; + + svs_dir = proc_mkdir("svs", NULL); + if (!svs_dir) { + pr_err("mkdir /proc/svs failed\n"); + return -EPERM; + } + + for (i = 0; i < ARRAY_SIZE(svs_entries); i++) { + if (!proc_create_data(svs_entries[i].name, 0664, + svs_dir, svs_entries[i].fops, svs)) { + pr_err("create /proc/svs/%s failed\n", + svs_entries[i].name); + return -EPERM; + } + } + + for (idx = 0; idx < svsp->bank_num; idx++) { + svsb = &svsp->banks[idx]; + + if (!svsb->init01_support) + continue; + + bank_dir = proc_mkdir(svsb->name, svs_dir); + if (!bank_dir) { + pr_err("mkdir /proc/svs/%s failed\n", svsb->name); + return -EPERM; + } + + for (i = 0; i < ARRAY_SIZE(bank_entries); i++) { + if (!proc_create_data(bank_entries[i].name, 0664, + bank_dir, bank_entries[i].fops, + svsb)) { + pr_err("create /proc/svs/%s/%s failed\n", + svsb->name, bank_entries[i].name); + return -EPERM; + } + } + } + + return 0; +} + +struct svs_bank_ops svs_mt8183_banks_ops = { + .set_freqs_pct = svs_set_freqs_pct_v2, + .get_vops = svs_get_vops_v2, +}; + +struct svs_bank svs_mt8183_banks[4] = { + { + .of_compatible = "mediatek,mt8183-svs-cpu-little", + .sw_id = SVS_CPU_LITTLE, + .hw_id = 0, + .ops = &svs_mt8183_banks_ops, + .zone_name = "tzts4", + .buck_name = "vcpu_little", + .mtcmos_request = false, + .init01_volt_flag = SVS_INIT01_VOLT_INC_ONLY, + .init01_support = true, + .init02_support = true, + .mon_mode_support = false, + .opp_count = 16, + .freq_base = 1989000000, + .vboot = 0x30, + .volt_step = 6250, + .volt_base = 500000, + .volt_offset = 0, + .vmax = 0x64, + .vmin = 0x10, + .dthi = 0x1, + .dtlo = 0xfe, + .det_window = 0xa28, + .det_max = 0xffff, + .age_config = 0x555555, + .agem = 0x0, + .dc_config = 0x555555, + .dvt_fixed = 0x7, + .vco = 0x10, + .chkshift = 0x77, + .upper_temp_bound = 0x64, + .lower_temp_bound = 0xb2, + .low_temp_threashold = 25000, + .low_temp_offset = 0, + .coresel = 0x8fff0000, + .systemclk_en = BIT(31), + .intst = BIT(0), + .ctl0 = 0x00010001, + }, + { + .of_compatible = "mediatek,mt8183-svs-cpu-big", + .sw_id = SVS_CPU_BIG, + .hw_id = 1, + .ops = &svs_mt8183_banks_ops, + .zone_name = "tzts5", + .buck_name = "vcpu_big", + .mtcmos_request = false, + .init01_volt_flag = SVS_INIT01_VOLT_INC_ONLY, + .init01_support = true, + .init02_support = true, + .mon_mode_support = false, + .opp_count = 16, + .freq_base = 1989000000, + .vboot = 0x30, + .volt_step = 6250, + .volt_base = 500000, + .volt_offset = 0, + .vmax = 0x58, + .vmin = 0x10, + .dthi = 0x1, + .dtlo = 0xfe, + .det_window = 0xa28, + .det_max = 0xffff, + .age_config = 0x555555, + .agem = 0x0, + .dc_config = 0x555555, + .dvt_fixed = 0x7, + .vco = 0x10, + .chkshift = 0x77, + .upper_temp_bound = 0x64, + .lower_temp_bound = 0xb2, + .low_temp_threashold = 25000, + .low_temp_offset = 0, + .coresel = 0x8fff0001, + .systemclk_en = BIT(31), + .intst = BIT(1), + .ctl0 = 0x00000001, + }, + { + .of_compatible = "mediatek,mt8183-svs-cci", + .sw_id = SVS_CCI, + .hw_id = 2, + .ops = &svs_mt8183_banks_ops, + .zone_name = "tzts4", + .buck_name = "vcci", + .mtcmos_request = false, + .init01_volt_flag = SVS_INIT01_VOLT_INC_ONLY, + .init01_support = true, + .init02_support = true, + .mon_mode_support = false, + .opp_count = 16, + .freq_base = 1196000000, + .vboot = 0x30, + .volt_step = 6250, + .volt_base = 500000, + .volt_offset = 0, + .vmax = 0x64, + .vmin = 0x10, + .dthi = 0x1, + .dtlo = 0xfe, + .det_window = 0xa28, + .det_max = 0xffff, + .age_config = 0x555555, + .agem = 0x0, + .dc_config = 0x555555, + .dvt_fixed = 0x7, + .vco = 0x10, + .chkshift = 0x77, + .upper_temp_bound = 0x64, + .lower_temp_bound = 0xb2, + .low_temp_threashold = 25000, + .low_temp_offset = 0, + .coresel = 0x8fff0002, + .systemclk_en = BIT(31), + .intst = BIT(2), + .ctl0 = 0x00100003, + }, + { + .of_compatible = "mediatek,mt8183-svs-gpu", + .sw_id = SVS_GPU, + .hw_id = 3, + .ops = &svs_mt8183_banks_ops, + .zone_name = "tzts2", + .buck_name = "vgpu", + .mtcmos_request = true, + .init01_volt_flag = SVS_INIT01_VOLT_INC_ONLY, + .init01_support = true, + .init02_support = true, + .mon_mode_support = true, + .opp_count = 16, + .freq_base = 900000000, + .vboot = 0x30, + .volt_step = 6250, + .volt_base = 500000, + .volt_offset = 0, + .vmax = 0x40, + .vmin = 0x14, + .dthi = 0x1, + .dtlo = 0xfe, + .det_window = 0xa28, + .det_max = 0xffff, + .age_config = 0x555555, + .agem = 0x0, + .dc_config = 0x555555, + .dvt_fixed = 0x3, + .vco = 0x10, + .chkshift = 0x77, + .upper_temp_bound = 0x64, + .lower_temp_bound = 0xb2, + .low_temp_threashold = 25000, + .low_temp_offset = 3, + .coresel = 0x8fff0003, + .systemclk_en = BIT(31), + .intst = BIT(3), + .ctl0 = 0x00050001, + }, +}; + +static const struct svs_platform svs_mt8183_platform = { + .name = "mt8183-svs", + .banks = svs_mt8183_banks, + .efuse_parsing = svs_mt8183_efuse_parsing, + .regs = svs_regs_v2, + .fake_efuse = false, + .bank_num = 4, + .efuse_num = 25, + .efuse_check = 2, + .thermal_efuse_num = 3, +}; + +static const struct of_device_id mtk_svs_of_match[] = { + { + .compatible = "mediatek,mt8183-svs", + .data = &svs_mt8183_platform, + }, { + /* sentinel */ + }, +}; + +static int svs_probe(struct platform_device *pdev) +{ + const struct of_device_id *of_dev_id; + struct mtk_svs *svs; + int ret; + u32 svs_irq; + + svs = devm_kzalloc(&pdev->dev, sizeof(*svs), GFP_KERNEL); + if (IS_ERR(svs)) + return PTR_ERR(svs); + + svs->dev = &pdev->dev; + if (!svs->dev->of_node) { + pr_err("cannot find device node\n"); + return -ENODEV; + } + + svs->base = of_iomap(svs->dev->of_node, 0); + if (IS_ERR(svs->base)) { + pr_err("cannot find svs register base\n"); + return PTR_ERR(svs->base); + } + + svs->main_clk = devm_clk_get(svs->dev, "main_clk"); + if (IS_ERR(svs->main_clk)) + pr_err("failed to get clock: %ld\n", PTR_ERR(svs->main_clk)); + + ret = clk_prepare_enable(svs->main_clk); + if (ret) { + pr_err("cannot enable main_clk: %d\n", ret); + return ret; + } + + of_dev_id = of_match_node(mtk_svs_of_match, svs->dev->of_node); + if (!of_dev_id || !of_dev_id->data) + return -EINVAL; + + svs->platform = of_dev_id->data; + dev_set_drvdata(svs->dev, svs); + + svs_irq = irq_of_parse_and_map(svs->dev->of_node, 0); + ret = devm_request_threaded_irq(svs->dev, svs_irq, NULL, svs_isr, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "mtk-svs", svs); + if (ret) { + pr_err("register irq(%d) failed: %d\n", svs_irq, ret); + return ret; + } + + ret = svs_is_support(svs); + if (ret) + return ret; + + ret = svs_resource_setup(svs); + if (ret) + return ret; + + ret = svs_start(svs); + if (ret) + return ret; + + ret = svs_create_svs_procfs(svs); + if (ret) + return ret; + + return 0; +} + +static const struct dev_pm_ops svs_pm_ops = { + .suspend = svs_suspend, + .resume = svs_resume, +}; + +static struct platform_driver svs_driver = { + .probe = svs_probe, + .driver = { + .name = "mtk-svs", + .pm = &svs_pm_ops, + .of_match_table = of_match_ptr(mtk_svs_of_match), + }, +}; + +static int __init svs_init(void) +{ + int ret; + + ret = platform_driver_register(&svs_driver); + if (ret) { + pr_err("svs platform driver register failed: %d\n", ret); + return ret; + } + + return 0; +} + +late_initcall_sync(svs_init); + +MODULE_DESCRIPTION("MediaTek SVS Driver v1.0"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/power/mtk_svs.h b/include/linux/power/mtk_svs.h new file mode 100644 index 000000000000..d5efca8d9dca --- /dev/null +++ b/include/linux/power/mtk_svs.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (C) 2018 MediaTek Inc. + */ + +#ifndef __MTK_SVS_H__ +#define __MTK_SVS_H__ + +#if defined(CONFIG_MTK_SVS) +unsigned long claim_mtk_svs_lock(void); +void release_mtk_svs_lock(unsigned long flags); +#else +static inline unsigned long claim_mtk_svs_lock(void) +{ + return 0; +} + +static inline void release_mtk_svs_lock(unsigned long flags) +{ +} +#endif /* CONFIG_MTK_SVS */ + +#endif /* __MTK_SVS_H__ */