From patchwork Wed Feb 7 00:36:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Ogletree X-Patchwork-Id: 13547948 Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4CD485382; Wed, 7 Feb 2024 00:37:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.149.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707266222; cv=none; b=Hd3WPW+e0G0NGNxKXVjyZs1clHHIjoxH9K5aZsHoXqfEP3megavdlnv6soc5vHBv4RWXBv/XYnX5XeV5ImOhHDP8C1olXJoVEZPBlw/kaOWZaEedYTIMZVcKkZZtjBR0u3nGS/xZjSZP6/2D5x3Bf/lqdGtELjzHFGLTpN97AHA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707266222; c=relaxed/simple; bh=+3XGplTgclxOyWy1gnP9oJnTdiPMdH0/Nkf0/AWQFvE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=rdf4L+SEVCau4AxqIoxR2DWGasaZOJu4zM/Z1LpnORaD7ZeOpf50hbQyGQwzW8jfoWXZ+EpqN3+mki5/h5YIYeIeH+1g0o1G7B/XzsefDWkSOYseTaXQUpGJtDKTSwiNaNIEgaur+Nsq2SOo1cBAjr9rztEmr+Zj7WFlvstXdOA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=opensource.cirrus.com; spf=pass smtp.mailfrom=opensource.cirrus.com; dkim=pass (2048-bit key) header.d=cirrus.com header.i=@cirrus.com header.b=LIowJD15; arc=none smtp.client-ip=67.231.149.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=opensource.cirrus.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=opensource.cirrus.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=cirrus.com header.i=@cirrus.com header.b="LIowJD15" Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 4166x9ch021815; Tue, 6 Feb 2024 18:36:53 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= PODMain02222019; bh=wwSJeCQjME0gCDZnyBcLJ4o0I/8DT61PqlfA8TKK9H0=; b= LIowJD15LtgfNnlaF1Q2A2YdeWTtg4MiQ3AUs24PH+vfJlnxplKD9b8DU1xQkHTO zTAyPnOK76pk4+l5G9IRdrI6CqyHXpmPm1igPhP3TYYbnlxvfVmF4iWqk2cYW6TT G1X+KNuFhAbhTsHj8hdjrXHhBKwmO9m8+q/WQu25uEjTKpCfClBatKSDLMum2CT1 gI6EPERLLT+zr6jCqQ1zckx2rrgyoXseWHRxnw04v9RuApnOzpoHPm2cXYnumjqW kxyqo0UJ236SpAsLuDKzpUclYS7SdRtH7Tn89/WGf9XW8FjMTZVOSjfcS7lzeuX0 2RqMk6ASh1ZWLBmA3fhLtA== Received: from ediex01.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 3w1ks2cbge-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 06 Feb 2024 18:36:52 -0600 (CST) Received: from ediex02.ad.cirrus.com (198.61.84.81) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Wed, 7 Feb 2024 00:36:50 +0000 Received: from ediswmail9.ad.cirrus.com (198.61.86.93) by anon-ediex02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server id 15.2.1118.40 via Frontend Transport; Wed, 7 Feb 2024 00:36:50 +0000 Received: from aus-sw-rshr002.ad.cirrus.com (aus-sw-rshr002.ad.cirrus.com [141.131.145.53]) by ediswmail9.ad.cirrus.com (Postfix) with ESMTP id 4C26C820246; Wed, 7 Feb 2024 00:36:48 +0000 (UTC) From: James Ogletree To: , , , , , , CC: , , , , James Ogletree Subject: [PATCH v6 3/5] mfd: cs40l50: Add support for CS40L50 core driver Date: Wed, 7 Feb 2024 00:36:10 +0000 Message-ID: <20240207003612.4187370-4-jogletre@opensource.cirrus.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240207003612.4187370-1-jogletre@opensource.cirrus.com> References: <20240207003612.4187370-1-jogletre@opensource.cirrus.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-GUID: uBvNmOzx8Ne4hIX5YL78Ixo8e6eIQLNz X-Proofpoint-ORIG-GUID: uBvNmOzx8Ne4hIX5YL78Ixo8e6eIQLNz X-Proofpoint-Spam-Reason: safe Introduce support for Cirrus Logic Device CS40L50: a haptic driver with waveform memory, integrated DSP, and closed-loop algorithms. The MFD component registers and initializes the device. Signed-off-by: James Ogletree --- MAINTAINERS | 2 + drivers/mfd/Kconfig | 30 ++ drivers/mfd/Makefile | 3 + drivers/mfd/cs40l50-core.c | 537 ++++++++++++++++++++++++++++++++++++ drivers/mfd/cs40l50-i2c.c | 69 +++++ drivers/mfd/cs40l50-spi.c | 69 +++++ include/linux/mfd/cs40l50.h | 134 +++++++++ 7 files changed, 844 insertions(+) create mode 100644 drivers/mfd/cs40l50-core.c create mode 100644 drivers/mfd/cs40l50-i2c.c create mode 100644 drivers/mfd/cs40l50-spi.c create mode 100644 include/linux/mfd/cs40l50.h diff --git a/MAINTAINERS b/MAINTAINERS index b71017a187f8..69a9e0a3b968 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4940,6 +4940,8 @@ M: Ben Bright L: patches@opensource.cirrus.com S: Supported F: Documentation/devicetree/bindings/input/cirrus,cs40l50.yaml +F: drivers/mfd/cs40l* +F: include/linux/mfd/cs40l* CIRRUS LOGIC DSP FIRMWARE DRIVER M: Simon Trimmer diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 90ce58fd629e..5efab06a9a50 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -237,6 +237,36 @@ config MFD_CROS_EC_DEV To compile this driver as a module, choose M here: the module will be called cros-ec-dev. +config MFD_CS40L50_CORE + tristate + select MFD_CORE + select FW_CS_DSP + select REGMAP_IRQ + +config MFD_CS40L50_I2C + tristate "Cirrus Logic CS40L50 (I2C)" + select REGMAP_I2C + select MFD_CS40L50_CORE + depends on I2C + help + Select this to support the Cirrus Logic CS40L50 Haptic + Driver over I2C. + + This driver can be built as a module. If built as a module it will be + called "cs40l50-i2c". + +config MFD_CS40L50_SPI + tristate "Cirrus Logic CS40L50 (SPI)" + select REGMAP_SPI + select MFD_CS40L50_CORE + depends on SPI + help + Select this to support the Cirrus Logic CS40L50 Haptic + Driver over SPI. + + This driver can be built as a module. If built as a module it will be + called "cs40l50-spi". + config MFD_CS42L43 tristate select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index c66f07edcd0e..a7a0e50d83c3 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -13,6 +13,9 @@ obj-$(CONFIG_ARCH_BCM2835) += bcm2835-pm.o obj-$(CONFIG_MFD_BCM590XX) += bcm590xx.o obj-$(CONFIG_MFD_BD9571MWV) += bd9571mwv.o obj-$(CONFIG_MFD_CROS_EC_DEV) += cros_ec_dev.o +obj-$(CONFIG_MFD_CS40L50_CORE) += cs40l50-core.o +obj-$(CONFIG_MFD_CS40L50_I2C) += cs40l50-i2c.o +obj-$(CONFIG_MFD_CS40L50_SPI) += cs40l50-spi.o obj-$(CONFIG_MFD_CS42L43) += cs42l43.o obj-$(CONFIG_MFD_CS42L43_I2C) += cs42l43-i2c.o obj-$(CONFIG_MFD_CS42L43_SDW) += cs42l43-sdw.o diff --git a/drivers/mfd/cs40l50-core.c b/drivers/mfd/cs40l50-core.c new file mode 100644 index 000000000000..22c16a273b7c --- /dev/null +++ b/drivers/mfd/cs40l50-core.c @@ -0,0 +1,537 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * CS40L50 Advanced Haptic Driver with waveform memory, + * integrated DSP, and closed-loop algorithms + * + * Copyright 2024 Cirrus Logic, Inc. + * + * Author: James Ogletree + */ + +#include +#include +#include +#include +#include +#include + +static const struct mfd_cell cs40l50_devs[] = { + { .name = "cs40l50-codec", }, + { .name = "cs40l50-vibra", }, +}; + +const struct regmap_config cs40l50_regmap = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .val_format_endian = REGMAP_ENDIAN_BIG, +}; +EXPORT_SYMBOL_GPL(cs40l50_regmap); + +static const char * const cs40l50_supplies[] = { + "vp", "vio", +}; + +static const struct regmap_irq cs40l50_reg_irqs[] = { + REGMAP_IRQ_REG(CS40L50_DSP_QUEUE_IRQ, CS40L50_IRQ1_INT_2_OFFSET, + CS40L50_DSP_QUEUE_MASK), + REGMAP_IRQ_REG(CS40L50_AMP_SHORT_IRQ, CS40L50_IRQ1_INT_1_OFFSET, + CS40L50_AMP_SHORT_MASK), + REGMAP_IRQ_REG(CS40L50_TEMP_ERR_IRQ, CS40L50_IRQ1_INT_8_OFFSET, + CS40L50_TEMP_ERR_MASK), + REGMAP_IRQ_REG(CS40L50_BST_UVP_IRQ, CS40L50_IRQ1_INT_9_OFFSET, + CS40L50_BST_UVP_MASK), + REGMAP_IRQ_REG(CS40L50_BST_SHORT_IRQ, CS40L50_IRQ1_INT_9_OFFSET, + CS40L50_BST_SHORT_MASK), + REGMAP_IRQ_REG(CS40L50_BST_ILIMIT_IRQ, CS40L50_IRQ1_INT_9_OFFSET, + CS40L50_BST_ILIMIT_MASK), + REGMAP_IRQ_REG(CS40L50_UVLO_VDDBATT_IRQ, CS40L50_IRQ1_INT_10_OFFSET, + CS40L50_UVLO_VDDBATT_MASK), + REGMAP_IRQ_REG(CS40L50_GLOBAL_ERROR_IRQ, CS40L50_IRQ1_INT_18_OFFSET, + CS40L50_GLOBAL_ERROR_MASK), +}; + +static struct regmap_irq_chip cs40l50_irq_chip = { + .name = "CS40L50 IRQ Controller", + + .status_base = CS40L50_IRQ1_INT_1, + .mask_base = CS40L50_IRQ1_MASK_1, + .ack_base = CS40L50_IRQ1_INT_1, + .num_regs = 22, + + .irqs = cs40l50_reg_irqs, + .num_irqs = ARRAY_SIZE(cs40l50_reg_irqs), + + .runtime_pm = true, +}; + +int cs40l50_dsp_write(struct device *dev, struct regmap *regmap, u32 val) +{ + int err, i; + u32 ack; + + /* Device NAKs if exiting hibernation, so optionally retry here */ + for (i = 0; i < CS40L50_DSP_TIMEOUT_COUNT; i++) { + err = regmap_write(regmap, CS40L50_DSP_QUEUE, val); + if (!err) + break; + + usleep_range(CS40L50_DSP_POLL_US, CS40L50_DSP_POLL_US + 100); + } + + /* If we never wrote, don't bother checking for ACK */ + if (i == CS40L50_DSP_TIMEOUT_COUNT) { + dev_err(dev, "Timed out writing %#X to DSP: %d\n", val, err); + return err; + } + + err = regmap_read_poll_timeout(regmap, CS40L50_DSP_QUEUE, ack, !ack, + CS40L50_DSP_POLL_US, + CS40L50_DSP_POLL_US * CS40L50_DSP_TIMEOUT_COUNT); + if (err) + dev_err(dev, "DSP did not ack %#X: %d\n", val, err); + + return err; +} +EXPORT_SYMBOL_GPL(cs40l50_dsp_write); + +static const struct cs_dsp_region cs40l50_dsp_regions[] = { + { .type = WMFW_HALO_PM_PACKED, .base = CS40L50_PMEM_0 }, + { .type = WMFW_HALO_XM_PACKED, .base = CS40L50_XMEM_PACKED_0 }, + { .type = WMFW_HALO_YM_PACKED, .base = CS40L50_YMEM_PACKED_0 }, + { .type = WMFW_ADSP2_XM, .base = CS40L50_XMEM_UNPACKED24_0 }, + { .type = WMFW_ADSP2_YM, .base = CS40L50_YMEM_UNPACKED24_0 }, +}; + +static void cs40l50_dsp_remove(void *data) +{ + cs_dsp_remove((struct cs_dsp *)data); +} + +static const struct cs_dsp_client_ops cs40l50_client_ops; + +static int cs40l50_dsp_init(struct cs40l50 *cs40l50) +{ + int err; + + cs40l50->dsp.num = 1; + cs40l50->dsp.type = WMFW_HALO; + cs40l50->dsp.dev = cs40l50->dev; + cs40l50->dsp.regmap = cs40l50->regmap; + cs40l50->dsp.base = CS40L50_CORE_BASE; + cs40l50->dsp.base_sysinfo = CS40L50_SYS_INFO_ID; + cs40l50->dsp.mem = cs40l50_dsp_regions; + cs40l50->dsp.num_mems = ARRAY_SIZE(cs40l50_dsp_regions); + cs40l50->dsp.no_core_startstop = true; + cs40l50->dsp.client_ops = &cs40l50_client_ops; + + err = cs_dsp_halo_init(&cs40l50->dsp); + if (err) + return err; + + return devm_add_action_or_reset(cs40l50->dev, cs40l50_dsp_remove, + &cs40l50->dsp); +} + +struct cs40l50_irq { + const char *name; + int virq; +}; + +static struct cs40l50_irq cs40l50_irqs[] = { + { "DSP", }, + { "Global", }, + { "Boost UVLO", }, + { "Boost current limit", }, + { "Boost short", }, + { "Boost undervolt", }, + { "Overtemp", }, + { "Amp short", }, +}; + +static const struct reg_sequence cs40l50_err_rls[] = { + { CS40L50_ERR_RLS, CS40L50_GLOBAL_ERR_RLS_SET }, + { CS40L50_ERR_RLS, CS40L50_GLOBAL_ERR_RLS_CLEAR }, +}; + +static irqreturn_t cs40l50_hw_err(int irq, void *data) +{ + struct cs40l50 *cs40l50 = data; + int err = 0, i; + + mutex_lock(&cs40l50->lock); + + /* Log hardware interrupt and execute error release sequence */ + for (i = 1; i < ARRAY_SIZE(cs40l50_irqs); i++) { + if (cs40l50_irqs[i].virq == irq) { + dev_err(cs40l50->dev, "%s error\n", cs40l50_irqs[i].name); + err = regmap_multi_reg_write(cs40l50->regmap, cs40l50_err_rls, + ARRAY_SIZE(cs40l50_err_rls)); + goto exit; + } + } +exit: + mutex_unlock(&cs40l50->lock); + return IRQ_RETVAL(!err); +} + +static irqreturn_t cs40l50_dsp_queue(int irq, void *data) +{ + struct cs40l50 *cs40l50 = data; + u32 rd_ptr, val, wt_ptr; + int err = 0; + + mutex_lock(&cs40l50->lock); + + /* Read from DSP queue and update read pointer */ + while (!err) { + err = regmap_read(cs40l50->regmap, CS40L50_DSP_QUEUE_WT, &wt_ptr); + if (err) + goto exit; + + err = regmap_read(cs40l50->regmap, CS40L50_DSP_QUEUE_RD, &rd_ptr); + if (err) + goto exit; + + /* Check if queue is empty */ + if (wt_ptr == rd_ptr) + goto exit; + + err = regmap_read(cs40l50->regmap, rd_ptr, &val); + if (err) + goto exit; + + dev_dbg(cs40l50->dev, "DSP payload: %#X", val); + + rd_ptr += sizeof(u32); + + if (rd_ptr > CS40L50_DSP_QUEUE_END) + rd_ptr = CS40L50_DSP_QUEUE_BASE; + + err = regmap_write(cs40l50->regmap, CS40L50_DSP_QUEUE_RD, rd_ptr); + if (err) + goto exit; + } +exit: + mutex_unlock(&cs40l50->lock); + + return IRQ_RETVAL(!err); +} + +static int cs40l50_irq_init(struct cs40l50 *cs40l50) +{ + struct device *dev = cs40l50->dev; + int err, i, virq; + + err = devm_regmap_add_irq_chip(dev, cs40l50->regmap, cs40l50->irq, + IRQF_ONESHOT | IRQF_SHARED, 0, + &cs40l50_irq_chip, &cs40l50->irq_data); + if (err) { + dev_err(dev, "Failed adding IRQ chip\n"); + return err; + } + + for (i = 0; i < ARRAY_SIZE(cs40l50_irqs); i++) { + virq = regmap_irq_get_virq(cs40l50->irq_data, i); + if (virq < 0) { + dev_err(dev, "Failed getting %s\n", cs40l50_irqs[i].name); + return virq; + } + + cs40l50_irqs[i].virq = virq; + + /* Handle DSP and non-DSP interrupts separately */ + err = devm_request_threaded_irq(dev, virq, NULL, + i ? cs40l50_hw_err : cs40l50_dsp_queue, + IRQF_ONESHOT | IRQF_SHARED, + cs40l50_irqs[i].name, cs40l50); + if (err) { + dev_err(dev, "Failed requesting %s IRQ\n", cs40l50_irqs[i].name); + return err; + } + } + + return 0; +} + +static const struct reg_sequence cs40l50_stop_core[] = { + { CS40L50_CCM_CORE_CONTROL, CS40L50_CLOCK_DISABLE}, + { CS40L50_RAM_INIT, CS40L50_RAM_INIT_FLAG}, + { CS40L50_PWRMGT_CTL, CS40L50_MEM_RDY_HW}, +}; + +static const struct reg_sequence cs40l50_internal_vamp_config[] = { + { CS40L50_BST_LPMODE_SEL, CS40L50_DCM_LOW_POWER }, + { CS40L50_BLOCK_ENABLES2, CS40L50_OVERTEMP_WARN }, +}; + +static const struct reg_sequence cs40l50_irq_mask_override[] = { + { CS40L50_IRQ1_MASK_2, CS40L50_IRQ_MASK_2_OVERRIDE }, + { CS40L50_IRQ1_MASK_20, CS40L50_IRQ_MASK_20_OVERRIDE }, +}; + +static void cs40l50_dsp_power_down(void *data) +{ + cs_dsp_power_down((struct cs_dsp *)data); +} + +static int cs40l50_power_up_dsp(struct cs40l50 *cs40l50) +{ + int err; + + mutex_lock(&cs40l50->lock); + + /* Stop and resume core to load patch file */ + err = regmap_multi_reg_write(cs40l50->regmap, cs40l50_stop_core, + ARRAY_SIZE(cs40l50_stop_core)); + if (err) + goto err_mutex; + + err = cs_dsp_power_up(&cs40l50->dsp, cs40l50->patch, "cs40l50.wmfw", + cs40l50->bin, "cs40l50.bin", "cs40l50"); + if (err) + goto err_mutex; + + err = devm_add_action_or_reset(cs40l50->dev, cs40l50_dsp_power_down, + &cs40l50->dsp); + if (err) + goto err_mutex; + + err = regmap_write(cs40l50->regmap, CS40L50_CCM_CORE_CONTROL, + CS40L50_CLOCK_ENABLE); + +err_mutex: + mutex_unlock(&cs40l50->lock); + + return err; +} + +static struct cs_dsp_wseq cs40l50_wseqs[] = { + { "PM_PWR_ON_SEQ" }, +}; + +static int cs40l50_configure_dsp(struct cs40l50 *cs40l50) +{ + u32 nwaves; + int err, i; + + if (cs40l50->bin) { + /* Log number of effects if wavetable was loaded */ + err = regmap_read(cs40l50->regmap, CS40L50_NUM_WAVES, &nwaves); + if (err) + return err; + + dev_info(cs40l50->dev, "Loaded with %u effects\n", nwaves); + } + + for (i = 0; i < ARRAY_SIZE(cs40l50_wseqs); i++) { + mutex_lock(&cs40l50->dsp.pwr_lock); + cs40l50_wseqs[i].ctl = cs_dsp_get_ctl(&cs40l50->dsp, + cs40l50_wseqs[i].name, + WMFW_ADSP2_XM, + CS40L50_PM_ALGO_ID); + mutex_unlock(&cs40l50->dsp.pwr_lock); + if (!cs40l50_wseqs[i].ctl) { + dev_err(cs40l50->dev, "No control: %s\n", cs40l50_wseqs[i].name); + return -ENOENT; + } + } + + err = cs_dsp_wseq_init(&cs40l50->dsp, cs40l50_wseqs, + ARRAY_SIZE(cs40l50_wseqs)); + if (err) { + dev_err(cs40l50->dev, "Failed to initialize write sequences\n"); + return err; + } + + /* Use internal V_AMP supply */ + err = regmap_multi_reg_write(cs40l50->regmap, cs40l50_internal_vamp_config, + ARRAY_SIZE(cs40l50_internal_vamp_config)); + if (err) + return err; + + err = cs_dsp_wseq_multi_write(&cs40l50->dsp, &cs40l50_wseqs[0], + cs40l50_internal_vamp_config, CS_DSP_WSEQ_FULL, + ARRAY_SIZE(cs40l50_internal_vamp_config), false); + if (err) + return err; + + /* Override firmware defaults for IRQ masks */ + err = regmap_multi_reg_write(cs40l50->regmap, cs40l50_irq_mask_override, + ARRAY_SIZE(cs40l50_irq_mask_override)); + if (err) + return err; + + return cs_dsp_wseq_multi_write(&cs40l50->dsp, &cs40l50_wseqs[0], + cs40l50_irq_mask_override, CS_DSP_WSEQ_FULL, + ARRAY_SIZE(cs40l50_irq_mask_override), false); +} + +static void cs40l50_start_dsp(const struct firmware *bin, void *context) +{ + struct cs40l50 *cs40l50 = context; + int err; + + /* Wavetable is optional; power up DSP regardless */ + cs40l50->bin = bin; + + err = cs40l50_power_up_dsp(cs40l50); + if (err) { + dev_err(cs40l50->dev, "Failed to power up DSP: %d\n", err); + goto err_fw; + } + + err = cs40l50_configure_dsp(cs40l50); + if (err) + dev_err(cs40l50->dev, "Failed to configure DSP: %d\n", err); + + err = devm_mfd_add_devices(cs40l50->dev, PLATFORM_DEVID_NONE, cs40l50_devs, + ARRAY_SIZE(cs40l50_devs), NULL, 0, NULL); + if (err) + dev_err(cs40l50->dev, "Failed to add sub devices: %d\n", err); + +err_fw: + release_firmware(cs40l50->bin); + release_firmware(cs40l50->patch); +} + +static void cs40l50_request_patch(const struct firmware *patch, void *context) +{ + struct cs40l50 *cs40l50 = context; + + if (!patch) { + dev_err(cs40l50->dev, "Failed to request patch file\n"); + return; + } + + cs40l50->patch = patch; + + if (request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT, CS40L50_WT, + cs40l50->dev, GFP_KERNEL, cs40l50, + cs40l50_start_dsp)) { + dev_err(cs40l50->dev, "Failed to request %s\n", CS40L50_WT); + release_firmware(cs40l50->patch); + } +} + +static int cs40l50_get_model(struct cs40l50 *cs40l50) +{ + int err; + + err = regmap_read(cs40l50->regmap, CS40L50_DEVID, &cs40l50->devid); + if (err) + return err; + + if (cs40l50->devid != CS40L50_DEVID_A) + return -EINVAL; + + err = regmap_read(cs40l50->regmap, CS40L50_REVID, &cs40l50->revid); + if (err) + return err; + + if (cs40l50->revid < CS40L50_REVID_B0) + return -EINVAL; + + dev_info(cs40l50->dev, "Cirrus Logic CS40L50 rev. %02X\n", cs40l50->revid); + + return 0; +} + +static int cs40l50_pm_runtime_setup(struct device *dev) +{ + int err; + + pm_runtime_set_autosuspend_delay(dev, CS40L50_AUTOSUSPEND_MS); + pm_runtime_use_autosuspend(dev); + pm_runtime_get_noresume(dev); + err = pm_runtime_set_active(dev); + if (err) + return err; + + return devm_pm_runtime_enable(dev); +} + +int cs40l50_probe(struct cs40l50 *cs40l50) +{ + struct device *dev = cs40l50->dev; + int err; + + mutex_init(&cs40l50->lock); + + cs40l50->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(cs40l50->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(cs40l50->reset_gpio), + "Failed getting reset GPIO\n"); + + err = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(cs40l50_supplies), + cs40l50_supplies); + if (err) + return dev_err_probe(dev, err, "Failed getting supplies\n"); + + /* Ensure minimum reset pulse width */ + usleep_range(CS40L50_RESET_PULSE_US, CS40L50_RESET_PULSE_US + 100); + + gpiod_set_value_cansleep(cs40l50->reset_gpio, 0); + + /* Wait for control port to be ready */ + usleep_range(CS40L50_CP_READY_US, CS40L50_CP_READY_US + 100); + + err = cs40l50_dsp_init(cs40l50); + if (err) + return dev_err_probe(dev, err, "Failed to initialize DSP\n"); + + err = cs40l50_pm_runtime_setup(dev); + if (err) + return dev_err_probe(dev, err, "Failed to initialize runtime PM\n"); + + err = cs40l50_get_model(cs40l50); + if (err) + return dev_err_probe(dev, err, "Failed to get part number\n"); + + err = cs40l50_irq_init(cs40l50); + if (err) + return dev_err_probe(dev, err, "Failed to request IRQs\n"); + + err = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT, CS40L50_FW, + dev, GFP_KERNEL, cs40l50, cs40l50_request_patch); + if (err) + return dev_err_probe(dev, err, "Failed to request %s\n", CS40L50_FW); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + return 0; +} +EXPORT_SYMBOL_GPL(cs40l50_probe); + +int cs40l50_remove(struct cs40l50 *cs40l50) +{ + gpiod_set_value_cansleep(cs40l50->reset_gpio, 1); + + return 0; +} +EXPORT_SYMBOL_GPL(cs40l50_remove); + +static int cs40l50_runtime_suspend(struct device *dev) +{ + struct cs40l50 *cs40l50 = dev_get_drvdata(dev); + + return regmap_write(cs40l50->regmap, CS40L50_DSP_QUEUE, CS40L50_ALLOW_HIBER); +} + +static int cs40l50_runtime_resume(struct device *dev) +{ + struct cs40l50 *cs40l50 = dev_get_drvdata(dev); + + return cs40l50_dsp_write(dev, cs40l50->regmap, CS40L50_PREVENT_HIBER); +} + +EXPORT_GPL_DEV_PM_OPS(cs40l50_pm_ops) = { + RUNTIME_PM_OPS(cs40l50_runtime_suspend, cs40l50_runtime_resume, NULL) +}; + +MODULE_DESCRIPTION("CS40L50 Advanced Haptic Driver"); +MODULE_AUTHOR("James Ogletree, Cirrus Logic Inc. "); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(FW_CS_DSP); diff --git a/drivers/mfd/cs40l50-i2c.c b/drivers/mfd/cs40l50-i2c.c new file mode 100644 index 000000000000..e18938dbddaa --- /dev/null +++ b/drivers/mfd/cs40l50-i2c.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * CS40L50 Advanced Haptic Driver with waveform memory, + * integrated DSP, and closed-loop algorithms + * + * Copyright 2024 Cirrus Logic, Inc. + * + * Author: James Ogletree + */ + +#include +#include + +static int cs40l50_i2c_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct cs40l50 *cs40l50; + + cs40l50 = devm_kzalloc(dev, sizeof(*cs40l50), GFP_KERNEL); + if (!cs40l50) + return -ENOMEM; + + i2c_set_clientdata(client, cs40l50); + + cs40l50->regmap = devm_regmap_init_i2c(client, &cs40l50_regmap); + if (IS_ERR(cs40l50->regmap)) + return dev_err_probe(cs40l50->dev, PTR_ERR(cs40l50->regmap), + "Failed to initialize register map\n"); + + cs40l50->dev = dev; + cs40l50->irq = client->irq; + + return cs40l50_probe(cs40l50); +} + +static void cs40l50_i2c_remove(struct i2c_client *client) +{ + struct cs40l50 *cs40l50 = i2c_get_clientdata(client); + + cs40l50_remove(cs40l50); +} + +static const struct i2c_device_id cs40l50_id_i2c[] = { + {"cs40l50"}, + {} +}; +MODULE_DEVICE_TABLE(i2c, cs40l50_id_i2c); + +static const struct of_device_id cs40l50_of_match[] = { + { .compatible = "cirrus,cs40l50" }, + {} +}; +MODULE_DEVICE_TABLE(of, cs40l50_of_match); + +static struct i2c_driver cs40l50_i2c_driver = { + .driver = { + .name = "cs40l50", + .of_match_table = cs40l50_of_match, + .pm = pm_ptr(&cs40l50_pm_ops), + }, + .id_table = cs40l50_id_i2c, + .probe = cs40l50_i2c_probe, + .remove = cs40l50_i2c_remove, +}; +module_i2c_driver(cs40l50_i2c_driver); + +MODULE_DESCRIPTION("CS40L50 I2C Driver"); +MODULE_AUTHOR("James Ogletree, Cirrus Logic Inc. "); +MODULE_LICENSE("GPL"); diff --git a/drivers/mfd/cs40l50-spi.c b/drivers/mfd/cs40l50-spi.c new file mode 100644 index 000000000000..9e18bb74eae0 --- /dev/null +++ b/drivers/mfd/cs40l50-spi.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * CS40L50 Advanced Haptic Driver with waveform memory, + * integrated DSP, and closed-loop algorithms + * + * Copyright 2024 Cirrus Logic, Inc. + * + * Author: James Ogletree + */ + +#include +#include + +static int cs40l50_spi_probe(struct spi_device *spi) +{ + struct cs40l50 *cs40l50; + struct device *dev = &spi->dev; + + cs40l50 = devm_kzalloc(dev, sizeof(*cs40l50), GFP_KERNEL); + if (!cs40l50) + return -ENOMEM; + + spi_set_drvdata(spi, cs40l50); + + cs40l50->regmap = devm_regmap_init_spi(spi, &cs40l50_regmap); + if (IS_ERR(cs40l50->regmap)) + return dev_err_probe(cs40l50->dev, PTR_ERR(cs40l50->regmap), + "Failed to initialize register map\n"); + + cs40l50->dev = dev; + cs40l50->irq = spi->irq; + + return cs40l50_probe(cs40l50); +} + +static void cs40l50_spi_remove(struct spi_device *spi) +{ + struct cs40l50 *cs40l50 = spi_get_drvdata(spi); + + cs40l50_remove(cs40l50); +} + +static const struct spi_device_id cs40l50_id_spi[] = { + {"cs40l50"}, + {} +}; +MODULE_DEVICE_TABLE(spi, cs40l50_id_spi); + +static const struct of_device_id cs40l50_of_match[] = { + { .compatible = "cirrus,cs40l50" }, + {} +}; +MODULE_DEVICE_TABLE(of, cs40l50_of_match); + +static struct spi_driver cs40l50_spi_driver = { + .driver = { + .name = "cs40l50", + .of_match_table = cs40l50_of_match, + .pm = pm_ptr(&cs40l50_pm_ops), + }, + .id_table = cs40l50_id_spi, + .probe = cs40l50_spi_probe, + .remove = cs40l50_spi_remove, +}; +module_spi_driver(cs40l50_spi_driver); + +MODULE_DESCRIPTION("CS40L50 SPI Driver"); +MODULE_AUTHOR("James Ogletree, Cirrus Logic Inc. "); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/cs40l50.h b/include/linux/mfd/cs40l50.h new file mode 100644 index 000000000000..0e6240df6d1c --- /dev/null +++ b/include/linux/mfd/cs40l50.h @@ -0,0 +1,134 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * CS40L50 Advanced Haptic Driver with waveform memory, + * integrated DSP, and closed-loop algorithms + * + * Copyright 2024 Cirrus Logic, Inc. + * + * Author: James Ogletree + */ + +#ifndef __CS40L50_H__ +#define __CS40L50_H__ + +#include +#include +#include +#include + +/* Power Supply Configuration */ +#define CS40L50_BLOCK_ENABLES2 0x201C +#define CS40L50_ERR_RLS 0x2034 +#define CS40L50_PWRMGT_CTL 0x2900 +#define CS40L50_BST_LPMODE_SEL 0x3810 +#define CS40L50_DCM_LOW_POWER 0x1 +#define CS40L50_OVERTEMP_WARN 0x4000010 + +/* Interrupts */ +#define CS40L50_IRQ1_INT_1 0xE010 +#define CS40L50_IRQ1_BASE CS40L50_IRQ1_INT_1 +#define CS40L50_IRQ1_INT_2 0xE014 +#define CS40L50_IRQ1_INT_8 0xE02C +#define CS40L50_IRQ1_INT_9 0xE030 +#define CS40L50_IRQ1_INT_10 0xE034 +#define CS40L50_IRQ1_INT_18 0xE054 +#define CS40L50_IRQ1_MASK_1 0xE090 +#define CS40L50_IRQ1_MASK_2 0xE094 +#define CS40L50_IRQ1_MASK_20 0xE0DC +#define CS40L50_IRQ1_INT_1_OFFSET (CS40L50_IRQ1_INT_1 - CS40L50_IRQ1_BASE) +#define CS40L50_IRQ1_INT_2_OFFSET (CS40L50_IRQ1_INT_2 - CS40L50_IRQ1_BASE) +#define CS40L50_IRQ1_INT_8_OFFSET (CS40L50_IRQ1_INT_8 - CS40L50_IRQ1_BASE) +#define CS40L50_IRQ1_INT_9_OFFSET (CS40L50_IRQ1_INT_9 - CS40L50_IRQ1_BASE) +#define CS40L50_IRQ1_INT_10_OFFSET (CS40L50_IRQ1_INT_10 - CS40L50_IRQ1_BASE) +#define CS40L50_IRQ1_INT_18_OFFSET (CS40L50_IRQ1_INT_18 - CS40L50_IRQ1_BASE) +#define CS40L50_IRQ_MASK_2_OVERRIDE 0xFFDF7FFF +#define CS40L50_IRQ_MASK_20_OVERRIDE 0x15C01000 +#define CS40L50_AMP_SHORT_MASK BIT(31) +#define CS40L50_DSP_QUEUE_MASK BIT(21) +#define CS40L50_TEMP_ERR_MASK BIT(31) +#define CS40L50_BST_UVP_MASK BIT(6) +#define CS40L50_BST_SHORT_MASK BIT(7) +#define CS40L50_BST_ILIMIT_MASK BIT(18) +#define CS40L50_UVLO_VDDBATT_MASK BIT(16) +#define CS40L50_GLOBAL_ERROR_MASK BIT(15) + +enum cs40l50_irq_list { + CS40L50_DSP_QUEUE_IRQ, + CS40L50_GLOBAL_ERROR_IRQ, + CS40L50_UVLO_VDDBATT_IRQ, + CS40L50_BST_ILIMIT_IRQ, + CS40L50_BST_SHORT_IRQ, + CS40L50_BST_UVP_IRQ, + CS40L50_TEMP_ERR_IRQ, + CS40L50_AMP_SHORT_IRQ, +}; + +/* DSP */ +#define CS40L50_XMEM_PACKED_0 0x2000000 +#define CS40L50_XMEM_UNPACKED24_0 0x2800000 +#define CS40L50_SYS_INFO_ID 0x25E0000 +#define CS40L50_RAM_INIT 0x28021DC +#define CS40L50_DSP_QUEUE_WT 0x28042C8 +#define CS40L50_DSP_QUEUE_RD 0x28042CC +#define CS40L50_NUM_WAVES 0x2805C18 +#define CS40L50_CORE_BASE 0x2B80000 +#define CS40L50_CCM_CORE_CONTROL 0x2BC1000 +#define CS40L50_YMEM_PACKED_0 0x2C00000 +#define CS40L50_YMEM_UNPACKED24_0 0x3400000 +#define CS40L50_PMEM_0 0x3800000 +#define CS40L50_MEM_RDY_HW 0x2 +#define CS40L50_RAM_INIT_FLAG 0x1 +#define CS40L50_CLOCK_DISABLE 0x80 +#define CS40L50_CLOCK_ENABLE 0x281 +#define CS40L50_DSP_POLL_US 1000 +#define CS40L50_DSP_TIMEOUT_COUNT 100 +#define CS40L50_RESET_PULSE_US 2200 +#define CS40L50_CP_READY_US 3100 +#define CS40L50_AUTOSUSPEND_MS 2000 +#define CS40L50_PM_ALGO_ID 0x9F206 +#define CS40L50_GLOBAL_ERR_RLS_SET BIT(11) +#define CS40L50_GLOBAL_ERR_RLS_CLEAR 0 + +/* DSP Commands */ +#define CS40L50_DSP_QUEUE_BASE 0x11004 +#define CS40L50_DSP_QUEUE_END 0x1101C +#define CS40L50_DSP_QUEUE 0x11020 +#define CS40L50_PREVENT_HIBER 0x2000003 +#define CS40L50_ALLOW_HIBER 0x2000004 +#define CS40L50_START_I2S 0x3000002 +#define CS40L50_OWT_PUSH 0x3000008 +#define CS40L50_STOP_PLAYBACK 0x5000000 +#define CS40L50_OWT_DELETE 0xD000000 + +/* Firmware files */ +#define CS40L50_FW "cs40l50.wmfw" +#define CS40L50_WT "cs40l50.bin" + +/* Device */ +#define CS40L50_DEVID 0x0 +#define CS40L50_REVID 0x4 +#define CS40L50_DEVID_A 0x40A50 +#define CS40L50_REVID_B0 0xB0 + +struct cs40l50 { + struct device *dev; + struct regmap *regmap; + struct mutex lock; + struct cs_dsp dsp; + struct gpio_desc *reset_gpio; + struct regmap_irq_chip_data *irq_data; + const struct firmware *patch; + const struct firmware *bin; + int irq; + u32 devid; + u32 revid; +}; + +int cs40l50_dsp_write(struct device *dev, struct regmap *regmap, u32 val); +int cs40l50_probe(struct cs40l50 *cs40l50); +int cs40l50_remove(struct cs40l50 *cs40l50); + +extern const struct regmap_config cs40l50_regmap; +extern const struct dev_pm_ops cs40l50_pm_ops; + +#endif /* __CS40L50_H__ */