From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 036012D6E51; Wed, 19 Nov 2025 15:36:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763566595; cv=none; b=pubBrLHUe5+wtURz2HrXSYyZOAXQk+Er7DQvSxzsx+yLDihVJPPOMy42XvANeUP8FfzwcsUVuA51G2ien+vjb1F+cRl6XLRL+n72YYeVlRG/tzdcxkzgJjNWq+8RkS6Tf1qsLoAJ110Kc9ZjWZhhD1WgPSITr5xgNEpfBBesO1I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763566595; c=relaxed/simple; bh=hxSuOmHOql0oVUAuDu8D9Wyr3mD7l+GLC0H6Djii+aA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=UP4pFBEVp7OHZYcAGDQupRD08oMzGw3ytC7iet8581qD7zw3W4WUM07+CjW61LqAKtG5jD5358rD46r4H+oGMaxxjN05Rh0E1k7Xg+hj8XWqwGUzif8OMWdh42VlAU5GE5wgrPzRIzNWreqrRbA4r+w1CICAP5XULD2o2FnaSCY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WlCHeMWb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WlCHeMWb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C3ABC4AF0B; Wed, 19 Nov 2025 15:36:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763566594; bh=hxSuOmHOql0oVUAuDu8D9Wyr3mD7l+GLC0H6Djii+aA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=WlCHeMWb5+Ng2luCsO7a0wmaQ5HQsBV8FryCmdUvYqALsGm5C66vWwbGNixUPV0Em O1sfXDYL4ZuSGm/oBCDx9IIAqmUuTk7Sb3mF7ubnkFWFZ1D84ci9c+R5Sf6xDKlaL0 0Q+7Cc2SE9xD/PL/gHJ3d/m7u6ChHWtb/U3xwmDVEQufQju7qOt0KH8TaaI1yYc8dZ iDSG2Ch9rkb5e5+kF+QNvGXF4R0uztH7dCps1q6WZ6RR5EQTID7Vn1R4FNz+zhamD3 JSj/efwb8n0fUqrZKhVig7RJKCZ4orQf4EovLarI+xrwfsW0qTGa+rVpFPtD0NZMD9 Qzd0r6SjTrKdw== Date: Wed, 19 Nov 2025 15:36:27 +0000 From: Lee Jones To: Steffen Trumtrar , Jacek Anaszewski Cc: Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Steffen Trumtrar , Pavel Machek , Mark Brown , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 2/2] leds: add support for TI LP5860 LED driver chip Message-ID: <20251119153627.GT1949330@google.com> References: <20251110-v6-14-topic-ti-lp5860-v5-0-5b777b99a905@pengutronix.de> <20251110-v6-14-topic-ti-lp5860-v5-2-5b777b99a905@pengutronix.de> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20251110-v6-14-topic-ti-lp5860-v5-2-5b777b99a905@pengutronix.de> You left Jacek from the recipients list, despite receiving some good advice. > Add support for the Texas Instruments LP5860 LED driver chip > via SPI interfaces. > > The LP5860 is an LED matrix driver for up to 196 LEDs, which supports > short and open detection of the individual channel select lines. > > It can be connected to SPI or I2C bus. For now add support for SPI only. > > The original driver is from an unknown author at Texas Instruments. Only > the cryptic handle 'zlzx' is known. Nothing about how we're planning on grouping these LEDs together? > Signed-off-by: Steffen Trumtrar > --- Patch-level change-logs are usually more handy for reviews. > drivers/leds/rgb/Kconfig | 27 +++ > drivers/leds/rgb/Makefile | 2 + > drivers/leds/rgb/leds-lp5860-core.c | 202 ++++++++++++++++++++ > drivers/leds/rgb/leds-lp5860-spi.c | 89 +++++++++ > include/linux/platform_data/leds-lp5860.h | 305 ++++++++++++++++++++++++++++++ > 5 files changed, 625 insertions(+) > > diff --git a/drivers/leds/rgb/Kconfig b/drivers/leds/rgb/Kconfig > index 222d943d826aa..0cc6400a29753 100644 > --- a/drivers/leds/rgb/Kconfig > +++ b/drivers/leds/rgb/Kconfig > @@ -26,6 +26,33 @@ config LEDS_KTD202X > To compile this driver as a module, choose M here: the module > will be called leds-ktd202x. > > +config LEDS_LP5860_CORE > + tristate "Core Driver for TI LP5860" > + depends on LEDS_CLASS > + depends on OF > + select FW_LOADER > + select FW_LOADER_USER_HELPER > + select REGMAP > + help > + This option supports common operations for LP5860 devices. > + The LP5860 is a LED matrix driver with 18 constant current > + sinks and 11 scan switches for 198 LED dots. Each dot can be > + controlled individually and supports 8/16-bit PWM dimming. > + The chip supports individual LED open and short detection. > + > + The device can be used with SPI or I2C bus. > + > +config LEDS_LP5860_SPI > + tristate "LED Support for TI LP5860 SPI LED driver chip" > + depends on SPI > + depends on LEDS_LP5860_CORE I wonder if this should be SELECTS? > + help > + If you say yes here you get support for the Texas Instruments > + LP5860 LED driver for SPI bus connections. > + > + To compile this driver as a module, choose M here: the > + module will be called lp5860_spi. > + > config LEDS_NCP5623 > tristate "LED support for NCP5623" > depends on I2C > diff --git a/drivers/leds/rgb/Makefile b/drivers/leds/rgb/Makefile > index a501fd27f1793..9a4daca5f2acf 100644 > --- a/drivers/leds/rgb/Makefile > +++ b/drivers/leds/rgb/Makefile > @@ -2,6 +2,8 @@ > > obj-$(CONFIG_LEDS_GROUP_MULTICOLOR) += leds-group-multicolor.o > obj-$(CONFIG_LEDS_KTD202X) += leds-ktd202x.o > +obj-$(CONFIG_LEDS_LP5860_CORE) += leds-lp5860-core.o > +obj-$(CONFIG_LEDS_LP5860_SPI) += leds-lp5860-spi.o > obj-$(CONFIG_LEDS_NCP5623) += leds-ncp5623.o > obj-$(CONFIG_LEDS_PWM_MULTICOLOR) += leds-pwm-multicolor.o > obj-$(CONFIG_LEDS_QCOM_LPG) += leds-qcom-lpg.o > diff --git a/drivers/leds/rgb/leds-lp5860-core.c b/drivers/leds/rgb/leds-lp5860-core.c > new file mode 100644 > index 0000000000000..d87efa2a87c2e > --- /dev/null > +++ b/drivers/leds/rgb/leds-lp5860-core.c > @@ -0,0 +1,202 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (c) 2025 Pengutronix > + * > + * Author: Steffen Trumtrar > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include > + > +static struct lp5860_led *mcled_cdev_to_led(struct led_classdev_mc *mc_cdev) > +{ > + return container_of(mc_cdev, struct lp5860_led, mc_cdev); > +} > + > +static int lp5860_set_dotonoff(struct lp5860_led *led, unsigned int dot, bool enable) Nit: I had to read this a couple of times to parse. Pop a '_' after the dot please. > +{ > + unsigned int offset = dot / LP5860_MAX_DOT_ONOFF_GROUP_NUM; > + unsigned int mask = BIT(dot % LP5860_MAX_DOT_ONOFF_GROUP_NUM); > + > + if (dot > LP5860_REG_DOT_ONOFF_MAX) > + return -EINVAL; > + > + return regmap_update_bits(led->ddata->regmap, ddata is usually called 'chip' here. > + LP5860_REG_DOT_ONOFF_START + offset, mask, > + enable ? LP5860_DOT_ALL_ON : LP5860_DOT_ALL_OFF); > +} > + > +static int lp5860_set_mc_brightness(struct led_classdev *cdev, > + enum led_brightness brightness) > +{ > + struct led_classdev_mc *mc_cdev = lcdev_to_mccdev(cdev); > + struct lp5860_led *led = mcled_cdev_to_led(mc_cdev); > + int i; > + > + led_mc_calc_color_components(mc_cdev, brightness); > + > + for (i = 0; i < led->mc_cdev.num_colors; i++) { > + unsigned int channel = mc_cdev->subled_info[i].channel; > + unsigned int led_brightness = mc_cdev->subled_info[i].brightness; > + int ret; > + > + ret = lp5860_set_dotonoff(led, channel, led_brightness); > + if (ret) > + return ret; > + > + ret = regmap_write(led->ddata->regmap, > + LP5860_REG_PWM_BRI_START + channel, led_brightness); > + if (ret) > + return ret; > + } > + > + return 0; > +} > + > +static int lp5860_enable_toggle(struct lp5860 *led, int enable) lp5860_chip_enable_toggle() > +{ > + return regmap_write(led->regmap, LP5860_REG_CHIP_EN, enable); > +} > + > +static int lp5860_led_init_default_state(struct lp5860_led *led, Why would you initialise to a non-default state? I think the "_default_state" part is superfluous. > + unsigned int channel) I see that you use 100-chars below. Let's use it everywhere and save on these pointless line breaks. We all have large monitors now, right? Riiiight? :) > +{ > + unsigned int brightness; > + int ret; > + > + ret = regmap_read(led->ddata->regmap, LP5860_REG_PWM_BRI_START + channel, > + &brightness); > + > + switch (led->default_state) { > + case LEDS_DEFSTATE_ON: > + led->brightness = LP5860_MAX_BRIGHTNESS; > + break; > + case LEDS_DEFSTATE_KEEP: > + led->brightness = min(brightness, LP5860_MAX_BRIGHTNESS); > + break; > + default: > + led->brightness = 0; > + break; > + } > + > + return lp5860_set_mc_brightness(&led->mc_cdev.led_cdev, led->brightness); > +} > + > +static int lp5860_init_dt(struct lp5860 *lp) > +{ > + struct led_init_data init_data = {}; > + struct led_classdev *led_cdev; > + struct mc_subled *mc_led_info; > + struct lp5860_led *led; > + int chan; > + int i = 0; > + int ret; > + > + device_for_each_child_node_scoped(lp->dev, multi_led) { > + struct fwnode_handle *led_node = NULL; I'd be interested to know why this and only this was chosen to be declared within this block when everything else was declared at function level. > + led = &lp->leds[i]; > + > + init_data.fwnode = multi_led; > + > + /* Count the number of channels in this multi_led */ > + chan = fwnode_get_child_node_count(multi_led); > + if (!chan || chan > LP5860_MAX_LED_CHANNELS) > + return -EINVAL; > + > + led->mc_cdev.num_colors = chan; > + > + mc_led_info = devm_kcalloc(lp->dev, chan, sizeof(*mc_led_info), GFP_KERNEL); > + if (!mc_led_info) > + return -ENOMEM; > + > + led->ddata = lp; > + led->mc_cdev.subled_info = mc_led_info; > + led->default_state = led_init_default_state_get(init_data.fwnode); Why are we storing this? Why not call led_init_default_state_get() from lp5860_led_init_default_state() and have done? > + led_cdev = &led->mc_cdev.led_cdev; > + led_cdev->max_brightness = LP5860_MAX_BRIGHTNESS; > + led_cdev->brightness_set_blocking = lp5860_set_mc_brightness; > + > + chan = 0; > + /* Initialize all channels of this multi_led */ > + fwnode_for_each_child_node(multi_led, led_node) { > + u32 channel; > + u32 color_index; > + > + ret = fwnode_property_read_u32(led_node, "color", > + &color_index); > + if (ret) { > + fwnode_handle_put(led_node); > + dev_err(lp->dev, "Cannot read 'color' property\n"); Does this have to be treated as catastrophic? No way to skip this LED and move on? > + return ret; > + } > + > + ret = fwnode_property_read_u32(led_node, "reg", > + &channel); These line breaks are highly inconsistent. Suggest we stick to 100-chars. > + if (ret < 0) { > + dev_err(lp->dev, "'reg' property is missing\n"); > + return ret; As above? > + } > + > + mc_led_info[chan].color_index = color_index; > + mc_led_info[chan].channel = channel; > + lp5860_led_init_default_state(led, chan); > + > + chan++; > + } > + > + ret = devm_led_classdev_multicolor_register_ext(lp->dev, &led->mc_cdev, > + &init_data); > + if (ret) { > + dev_err(lp->dev, "Failed to register Multi-Color LEDs\n"); > + return ret; > + } > + i++; Can we call this something better? This is more than a meaningless iterator. > + } > + > + return 0; > +} > + > +int lp5860_device_init(struct device *dev) > +{ > + struct lp5860 *lp = dev_get_drvdata(dev); > + int ret; > + > + ret = lp5860_enable_toggle(lp, LP5860_CHIP_ENABLE); > + if (ret) > + return ret; > + > + /* > + * Set to 8-bit PWM data without VSYNC. > + * Data is sent out for display instantly after received. > + */ > + ret = regmap_update_bits(lp->regmap, LP5860_REG_DEV_INITIAL, > + LP5860_MODE_MASK, > + LP5860_MODE_1 << LP5860_MODE_OFFSET); > + if (ret < 0) > + return ret; > + > + ret = sysfs_create_group(&lp->dev->kobj, &lp5860_group); Does this even compile? Where is lp5860_group created? > + if (ret) > + return ret; > + > + return lp5860_init_dt(lp); > +} > + > +void lp5860_device_remove(struct device *dev) > +{ > + struct lp5860 *lp = dev_get_drvdata(dev); > + int err; > + > + err = lp5860_enable_toggle(lp, LP5860_CHIP_DISABLE); > + if (err) > + dev_err(lp->dev, "Failed to disable chip during remove.\n"); We do not usually issue error messages on tear down. What do you expect the user to do about this? > + sysfs_remove_group(&dev->kobj, &lp5860_group); > +} > diff --git a/drivers/leds/rgb/leds-lp5860-spi.c b/drivers/leds/rgb/leds-lp5860-spi.c > new file mode 100644 > index 0000000000000..d6b8d93c09978 > --- /dev/null > +++ b/drivers/leds/rgb/leds-lp5860-spi.c > @@ -0,0 +1,89 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (c) 2025 Pengutronix > + * > + * Author: Steffen Trumtrar > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include > + > +#define LP5860_SPI_WRITE_FLAG BIT(5) > + > +static const struct regmap_config lp5860_regmap_config = { > + .name = "lp5860-spi", > + .reg_bits = 10, > + .pad_bits = 6, > + .val_bits = 8, > + .write_flag_mask = (__force unsigned long)cpu_to_be16(LP5860_SPI_WRITE_FLAG), > + .reg_format_endian = REGMAP_ENDIAN_BIG, > + .max_register = LP5860_MAX_REG, > +}; > + > +static int lp5860_probe(struct spi_device *spi) > +{ > + struct device *dev = &spi->dev; > + struct lp5860 *lp5860; > + unsigned int multi_leds; > + > + multi_leds = device_get_child_node_count(dev); > + if (!multi_leds) { > + dev_err(dev, "LEDs are not defined in Device Tree!"); > + return -ENODEV; > + } > + > + if (multi_leds > LP5860_MAX_LED) { > + dev_err(dev, "Too many LEDs specified.\n"); > + return -EINVAL; > + } > + > + lp5860 = devm_kzalloc(dev, struct_size(lp5860, leds, multi_leds), > + GFP_KERNEL); > + if (!lp5860) > + return -ENOMEM; > + > + lp5860->leds_count = multi_leds; > + > + lp5860->regmap = devm_regmap_init_spi(spi, &lp5860_regmap_config); > + if (IS_ERR(lp5860->regmap)) { > + dev_err(&spi->dev, "Failed to initialise Regmap.\n"); > + return PTR_ERR(lp5860->regmap); > + } > + > + lp5860->dev = dev; > + > + spi_set_drvdata(spi, lp5860); > + > + return lp5860_device_init(dev); > +} > + > +static void lp5860_remove(struct spi_device *spi) > +{ > + lp5860_device_remove(&spi->dev); > +} > + > +static const struct of_device_id lp5860_of_match[] = { > + { .compatible = "ti,lp5860" }, > + {} > +}; > +MODULE_DEVICE_TABLE(of, lp5860_of_match); > + > +static struct spi_driver lp5860_driver = { > + .driver = { > + .name = "lp5860-spi", > + .of_match_table = lp5860_of_match, > + }, > + .probe = lp5860_probe, > + .remove = lp5860_remove, > +}; > +module_spi_driver(lp5860_driver); > + > +MODULE_AUTHOR("Steffen Trumtrar "); > +MODULE_DESCRIPTION("TI LP5860 RGB LED driver"); > +MODULE_LICENSE("GPL"); > diff --git a/include/linux/platform_data/leds-lp5860.h b/include/linux/platform_data/leds-lp5860.h > new file mode 100644 > index 0000000000000..4b5348c743a3c > --- /dev/null > +++ b/include/linux/platform_data/leds-lp5860.h > @@ -0,0 +1,305 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (c) 2025 Pengutronix > + * > + * Author: Steffen Trumtrar > + */ > + > +#ifndef _LEDS_LP5860_COMMON_H > +#define _LEDS_LP5860_COMMON_H > + > +#include > +#include Alphabetical. > +#define LP5860_REG_CHIP_EN 0x00 > +#define LP5860_REG_DEV_INITIAL 0x01 > +#define LP5860_REG_DEV_CONFIG1 0x02 > +#define LP5860_REG_DEV_CONFIG2 0x03 > +#define LP5860_REG_DEV_CONFIG3 0x04 > +#define LP5860_REG_GLOBAL_BRI 0x05 > +#define LP5860_REG_GROUP0_BRI 0x06 > +#define LP5860_REG_GROUP1_BRI 0x07 > +#define LP5860_REG_GROUP2_BRI 0x08 > +#define LP5860_REG_R_CURRENT_SET 0x09 > +#define LP5860_REG_G_CURRENT_SET 0x0A > +#define LP5860_REG_B_CURRENT_SET 0x0B > +#define LP5860_REG_GRP_SEL_START 0x0C > +#define LP5860_REG_DOT_ONOFF_START 0x43 > +#define LP5860_REG_DOT_ONOFF_MAX 0x63 > +#define LP5860_REG_FAULT_STATE 0x64 > +#define LP5860_REG_DOT_LOD_START 0x65 > +#define LP5860_REG_DOT_LSD_START 0x86 > +#define LP5860_REG_LOD_CLEAR 0xA7 > +#define LP5860_REG_LSD_CLEAR 0xA8 > +#define LP5860_REG_RESET 0xA9 > +#define LP5860_REG_DC_START 0x0100 > +#define LP5860_REG_PWM_BRI_START 0x0200 > +#define LP5860_MAX_REG 0x038B > + > +/* Register chip_enable value */ > +#define LP5860_CHIP_OFFSET 0 > +#define LP5860_CHIP_MASK BIT(0) > +#define LP5860_CHIP_DISABLE 0x00 > +#define LP5860_CHIP_ENABLE 0x01 > + > +/* Register dev_initial value */ > +#define LP5860_MAX_LINE_OFFSET 3 > +#define LP5860_MAX_LINE_MASK GENMASK(6, 3) > +#define LP5860_MAX_LINE_11 0x0B > +#define LP5860_MAX_LINE_10 0x0A > +#define LP5860_MAX_LINE_9 0x09 > +#define LP5860_MAX_LINE_8 0x08 > +#define LP5860_MAX_LINE_7 0x07 > +#define LP5860_MAX_LINE_6 0x06 > +#define LP5860_MAX_LINE_5 0x05 > +#define LP5860_MAX_LINE_4 0x04 > +#define LP5860_MAX_LINE_3 0x03 > +#define LP5860_MAX_LINE_2 0x02 > +#define LP5860_MAX_LINE_1 0x01 > + > +#define LP5860_MODE_OFFSET 1 > +#define LP5860_MODE_MASK GENMASK(2, 1) > +#define LP5860_MODE_3_1 0x03 > +#define LP5860_MODE_3 0x02 > +#define LP5860_MODE_2 0x01 > +#define LP5860_MODE_1 0x00 > + > +#define LP5860_PWM_FREQUENCY_OFFSET 0 > +#define LP5860_PWM_FREQUENCY_MASK BIT(0) > +#define LP5860_PWM_FREQUENCY_62_5K 0x01 > +#define LP5860_PWM_FREQUENCY_125K 0x00 > + > +/* Register dev_config1 value */ > +#define LP5860_SW_BLK_OFFSET 3 > +#define LP5860_SW_BLK_MASK BIT(3) > +#define LP5860_SW_BLK_05US 0x01 > +#define LP5860_SW_BLK_1US 0x00 > + > +#define LP5860_PWM_SCALE_MODE_OFFSET 2 > +#define LP5860_PWM_SCALE_MODE_MASK BIT(2) > +#define LP5860_PWM_SCALE_EXPONENTIAL 0x01 > +#define LP5860_PWM_SCALE_LINEAR 0x00 > + > +#define LP5860_PWM_PHASESHIFT_OFFSET 1 > +#define LP5860_PWM_PHASESHIFT_MASK BIT(1) > +#define LP5860_PWM_PHASESHIFT_ON 0x01 > +#define LP5860_PWM_PHASESHIFT_OFF 0x00 > + > +#define LP5860_CS_ON_SHIFT_OFFSET 0 > +#define LP5860_CS_ON_SHIFT_MASK BIT(0) > +#define LP5860_CS_DELAY_ON 0x01 > +#define LP5860_CS_DELAY_OFF 0x00 > + > +/* Register dev_config2 value */ > +#define LP5860_COMP_GROUP3_OFFSET 6 > +#define LP5860_COMP_GROUP3_MASK GENMASK(7, 6) > +#define LP5860_COMP_GROUP3_3CLOCK 0x03 > +#define LP5860_COMP_GROUP3_2CLOCK 0x02 > +#define LP5860_COMP_GROUP3_1CLOCK 0x01 > +#define LP5860_COMP_GROUP3_OFF 0x00 > + > +#define LP5860_COMP_GROUP2_OFFSET 4 > +#define LP5860_COMP_GROUP2_MASK GENMASK(5, 4) > +#define LP5860_COMP_GROUP2_3CLOCK 0x03 > +#define LP5860_COMP_GROUP2_2CLOCK 0x02 > +#define LP5860_COMP_GROUP2_1CLOCK 0x01 > +#define LP5860_COMP_GROUP2_OFF 0x00 > + > +#define LP5860_COMP_GROUP1_OFFSET 2 > +#define LP5860_COMP_GROUP1_MASK GENMASK(3, 2) > +#define LP5860_COMP_GROUP1_3CLOCK 0x03 > +#define LP5860_COMP_GROUP1_2CLOCK 0x02 > +#define LP5860_COMP_GROUP1_1CLOCK 0x01 > +#define LP5860_COMP_GROUP1_OFF 0x00 > + > +#define LP5860_LOD_REMOVAL_OFFSET 1 > +#define LP5860_LOD_REMOVAL_MASK BIT(1) > +#define LP5860_LOD_REMOVAL_EN 0x01 > +#define LP5860_LOD_REMOVAL_OFF 0x00 > + > +#define LP5860_LSD_REMOVAL_OFFSET 0 > +#define LP5860_LSD_REMOVAL_MASK BIT(0) > +#define LP5860_LSD_REMOVAL_EN 0x01 > +#define LP5860_LSD_REMOVAL_OFF 0x00 > + > +/* Register dev_config3 value */ > +#define LP5860_DOWN_DEGHOST_OFFSET 6 > +#define LP5860_DOWN_DEGHOST_MASK GENMASK(7, 6) > +#define LP5860_DOWN_DEGHOST_STRONG 0x03 > +#define LP5860_DOWN_DEGHOST_MEDIUM 0x02 > +#define LP5860_DOWN_DEGHOST_WEAK 0x01 > +#define LP5860_DOWN_DEGHOST_OFF 0x00 > + > +#define LP5860_UP_DEGHOST_OFFSET 4 > +#define LP5860_UP_DEGHOST_MASK GENMASK(5, 4) > +#define LP5860_UP_DEGHOST_GND 0x03 > +#define LP5860_UP_DEGHOST_3 0x02 > +#define LP5860_UP_DEGHOST_2_5 0x01 > +#define LP5860_UP_DEGHOST_2 0x00 > + > +#define LP5860_MAXIMUM_CURRENT_OFFSET 1 > +#define LP5860_MAXIMUM_CURRENT_MASK GENMASK(3, 1) > +#define LP5860_MAXIMUM_CURRENT_50 0x07 > +#define LP5860_MAXIMUM_CURRENT_40 0x06 > +#define LP5860_MAXIMUM_CURRENT_30 0x05 > +#define LP5860_MAXIMUM_CURRENT_20 0x04 > +#define LP5860_MAXIMUM_CURRENT_15 0x03 > +#define LP5860_MAXIMUM_CURRENT_10 0x02 > +#define LP5860_MAXIMUM_CURRENT_5 0x01 > +#define LP5860_MAXIMUM_CURRENT_3 0x00 > + > +#define LP5860_UP_DEGHOST_ENABLE_OFFSET 0 > +#define LP5860_UP_DEGHOST_ENABLE_MASK BIT(0) > +#define LP5860_UP_DEGHOST_ENABLE_EN 0x01 > +#define LP5860_UP_DEGHOST_ENABLE_OFF 0x00 > + > +/* Register PWM */ > +#define LP5860_PWM_GLOBAL_MAX 0xff > +#define LP5860_PWM_GROUP_MAX 0xff > + > +/* Register CC group select */ > +#define LP5860_CC_GROUP_MASK GENMASK(7, 0) > +#define LP5860_CC_GROUP_MAX 0x7F > + > +/* Register dot group select */ > +#define LP5860_DOT_0_OFFSET 0 > +#define LP5860_DOT_1_OFFSET 2 > +#define LP5860_DOT_2_OFFSET 4 > +#define LP5860_DOT_3_OFFSET 6 > + > +#define LP5860_DOT_GROUP3 0x03 > +#define LP5860_DOT_GROUP2 0x02 > +#define LP5860_DOT_GROUP1 0x01 > +#define LP5860_DOT_GROUP_NONE 0x00 > + > +#define LP5860_DOT_ALL_ON 0xff > +#define LP5860_DOT_ALL_OFF 0x0 > +#define LP5860_PWM_DOT_MAX 0xff > +/* Dot onoff value */ > +#define LP5860_DOT_CS0_OFFSET 0 > +#define LP5860_DOT_CS1_OFFSET 1 > +#define LP5860_DOT_CS2_OFFSET 2 > +#define LP5860_DOT_CS3_OFFSET 3 > +#define LP5860_DOT_CS4_OFFSET 4 > +#define LP5860_DOT_CS5_OFFSET 5 > +#define LP5860_DOT_CS6_OFFSET 6 > +#define LP5860_DOT_CS7_OFFSET 7 > + > +#define LP5860_DOT_CS_ON 0x01 > +#define LP5860_DOT_CS_OFF 0x00 > + > +/* Dot lod value */ > +#define LP5860_DOT_LOD0_OFFSET 0 > +#define LP5860_DOT_LOD1_OFFSET 1 > +#define LP5860_DOT_LOD2_OFFSET 2 > +#define LP5860_DOT_LOD3_OFFSET 3 > +#define LP5860_DOT_LOD4_OFFSET 4 > +#define LP5860_DOT_LOD5_OFFSET 5 > +#define LP5860_DOT_LOD6_OFFSET 6 > +#define LP5860_DOT_LOD7_OFFSET 7 > + > +#define LP5860_DOT_LOD_ON 0x01 > +#define LP5860_DOT_LOD_OFF 0x00 > + > +/* dot lsd value */ > +#define LP5860_DOT_LSD0_OFFSET 0 > +#define LP5860_DOT_LSD1_OFFSET 1 > +#define LP5860_DOT_LSD2_OFFSET 2 > +#define LP5860_DOT_LSD3_OFFSET 3 > +#define LP5860_DOT_LSD4_OFFSET 4 > +#define LP5860_DOT_LSD5_OFFSET 5 > +#define LP5860_DOT_LSD6_OFFSET 6 > +#define LP5860_DOT_LSD7_OFFSET 7 > + > +#define LP5860_DOT_LSD_ON 0x01 > +#define LP5860_DOT_LSD_OFF 0x00 > + > +/* Register lod state */ > +#define LP5860_GLOBAL_LOD_OFFSET 1 > +#define LP5860_GLOBAL_LOD_STATE BIT(1) > +#define LP5860_GLOBAL_LSD_OFFSET 0 > +#define LP5860_GLOBAL_LSD_STATE BIT(0) > + > +#define LP5860_FAULT_STATE_ON 0x01 > +#define LP5860_FAULT_STATE_OFF 0x00 > + > +#define LP5860_GLOBAL_LOD_CLEAR 0x00 > +#define LP5860_GLOBAL_LSD_CLEAR 0x00 > + > + > +#define LP5860_LOD_CLEAR_EN 0xff > +#define LP5860_LSD_CLEAR_EN 0xff > +#define LP5860_RESET_EN 0xff > + > +#define LP5860_MAX_BRIGHTNESS 255 > +#define LP5860_REG_R_PWM 0x0 > +#define LP5860_REG_G_PWM 0x1 > +#define LP5860_REG_B_PWM 0x2 > + > +#define LP5860_MAX_LED_CONSTANT 18 > +#define LP5860_MAX_LED_SCAN 11 > +#define LP5860_MAX_LED (LP5860_MAX_LED_CONSTANT * LP5860_MAX_LED_SCAN) > + > +#define LP5860_MAX_DOT_ONOFF_GROUP_NUM 8 > + > +/* > + * Theoretically, there is no max channel per LED, > + * limit this to a reasonable value for RGBW LEDs > + */ > +#define LP5860_MAX_LED_CHANNELS 4 > + > +#define LP5860_DEV_ATTR_RW(name) \ > + DEVICE_ATTR(name, 0644, lp5860_##name##_show, lp5860_##name##_store) > + > +#define LP5860_SHOW_MODE(nr, reg, mask, offset) \ > + static ssize_t nr##_show(struct device *dev, \ > + struct device_attribute *attr, \ > + char *buf) \ > + { \ > + struct lp5860 *led = dev_get_drvdata(dev); \ > + unsigned int value = 0; \ > + int ret; \ > + \ > + ret = regmap_read(led->regmap, reg, &value); \ > + if (ret) \ > + return ret; \ > + return sysfs_emit(buf, "%d\n", (value & (int)mask) >> (int)offset);\ > + } > + > +#define LP5860_STORE_MODE(nr, reg, mask, offset) \ > + static ssize_t nr##_store(struct device *dev, \ > + struct device_attribute *attr, \ > + const char *buf, size_t len) \ > + { \ > + struct lp5860 *led = dev_get_drvdata(dev); \ > + unsigned int value = 0; \ > + int ret; \ > + \ > + if (kstrtoint(buf, 0, &value)) \ > + return -EINVAL; \ > + ret = regmap_update_bits(led->regmap, reg, (int)mask, \ > + value << (int)offset); \ > + if (ret < 0) \ > + return ret; \ > + return len; \ > + } These are never used. > +struct lp5860_led { > + struct lp5860 *ddata; > + struct led_classdev_mc mc_cdev; > + u8 brightness; > + enum led_default_state default_state; > +}; > + > +struct lp5860 { > + struct device *dev; > + struct regmap *regmap; > + unsigned int leds_count; > + > + DECLARE_FLEX_ARRAY(struct lp5860_led, leds); > +}; > + > +int lp5860_device_init(struct device *dev); > +void lp5860_device_remove(struct device *dev); > + > +#endif /* _LEDS_LP5860_H */ > > -- > 2.51.0 > -- Lee Jones [李琼斯]