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Message-ID: <8a01a0afc344e9c7d259355aec190af63ea79393.camel@microchip.com> Date: Thu, 15 Dec 2022 03:54:23 +0000 From: <Arun.Ramadoss@...rochip.com> To: <olteanv@...il.com>, <andrew@...n.ch>, <robh+dt@...nel.org>, <corbet@....net>, <linux-kernel@...r.kernel.org>, <tharvey@...eworks.com>, <linux-leds@...r.kernel.org>, <devicetree@...r.kernel.org>, <john@...ozen.org>, <f.fainelli@...il.com>, <pavel@....cz>, <rmk+kernel@...linux.org.uk>, <kuba@...nel.org>, <ansuelsmth@...il.com>, <pabeni@...hat.com>, <edumazet@...gle.com>, <netdev@...r.kernel.org>, <krzysztof.kozlowski+dt@...aro.org>, <davem@...emloft.net>, <linux-doc@...r.kernel.org>, <alexander.stein@...tq-group.com>, <rasmus.villemoes@...vas.dk> Subject: Re: [PATCH v7 10/11] net: dsa: qca8k: add LEDs support Hi Christian, On Thu, 2022-12-15 at 00:54 +0100, Christian Marangi wrote: > Add LEDs support for qca8k Switch Family. This will provide the LEDs > hardware API to permit the PHY LED to support hardware mode. > Each port have at least 3 LEDs and they can HW blink, set on/off or > follow blink modes configured with the LED in hardware mode. > Adds support for leds netdev trigger to support hardware triggers. > > Signed-off-by: Christian Marangi <ansuelsmth@...il.com> > --- > drivers/net/dsa/qca/Kconfig | 9 + > drivers/net/dsa/qca/Makefile | 1 + > drivers/net/dsa/qca/qca8k-8xxx.c | 4 + > drivers/net/dsa/qca/qca8k-leds.c | 406 > +++++++++++++++++++++++++++++++ > drivers/net/dsa/qca/qca8k.h | 62 +++++ > 5 files changed, 482 insertions(+) > create mode 100644 drivers/net/dsa/qca/qca8k-leds.c > > > diff --git a/drivers/net/dsa/qca/qca8k-leds.c > b/drivers/net/dsa/qca/qca8k-leds.c > new file mode 100644 > index 000000000000..b51cdcae31b2 > --- /dev/null > +++ b/drivers/net/dsa/qca/qca8k-leds.c > @@ -0,0 +1,406 @@ > +// SPDX-License-Identifier: GPL-2.0 > +#include <net/dsa.h> > +#include <linux/regmap.h> Alphabatical order > + > +#include "qca8k.h" > + > +static int > +qca8k_get_enable_led_reg(int port_num, int led_num, struct > qca8k_led_pattern_en *reg_info) > +{ > + int shift; > + > + switch (port_num) { > + case 0: > + reg_info->reg = QCA8K_LED_CTRL_REG(led_num); > + reg_info->shift = 14; Any macros other than magic number for 14, 30 > + break; > + case 1: > + case 2: > + case 3: > + reg_info->reg = QCA8K_LED_CTRL_REG(3); > + shift = 2 * led_num + (6 * (port_num - 1)); > + > + reg_info->shift = 8 + shift; > + > + break; > + case 4: > + reg_info->reg = QCA8K_LED_CTRL_REG(led_num); > + reg_info->shift = 30; > + break; > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > > + > +static void > +qca8k_led_brightness_set(struct qca8k_led *led, > + enum led_brightness b) variable name other than b to have readability in code > +{ > + struct qca8k_led_pattern_en reg_info; > + struct qca8k_priv *priv = led->priv; > + u32 val = QCA8K_LED_ALWAYS_OFF; > + > + qca8k_get_enable_led_reg(led->port_num, led->led_num, > ®_info); > + > + if (b) > + val = QCA8K_LED_ALWAYS_ON; > + > + regmap_update_bits(priv->regmap, reg_info.reg, > + GENMASK(1, 0) << reg_info.shift, GENMASK(1, 0) used in multiple place, replace with macro for readability > + val << reg_info.shift); > +} > + > > + > +static int > +qca8k_cled_trigger_offload(struct led_classdev *ldev, bool enable) > +{ > + struct qca8k_led *led = container_of(ldev, struct qca8k_led, > cdev); > + Blank line > + struct qca8k_led_pattern_en reg_info; > + struct qca8k_priv *priv = led->priv; > + u32 val = QCA8K_LED_ALWAYS_OFF; > + > + qca8k_get_enable_led_reg(led->port_num, led->led_num, > ®_info); > + > + if (enable) > + val = QCA8K_LED_RULE_CONTROLLED; > + > + return regmap_update_bits(priv->regmap, reg_info.reg, > + GENMASK(1, 0) << reg_info.shift, > + val << reg_info.shift); > +} > + > > +static bool > +qca8k_cled_hw_control_status(struct led_classdev *ldev) > +{ > + struct qca8k_led *led = container_of(ldev, struct qca8k_led, > cdev); > + Blank line > + struct qca8k_led_pattern_en reg_info; > + struct qca8k_priv *priv = led->priv; > + u32 val; > + > + qca8k_get_enable_led_reg(led->port_num, led->led_num, > ®_info); > + > + regmap_read(priv->regmap, reg_info.reg, &val); > + > + val >>= reg_info.shift; > + val &= GENMASK(1, 0); > + > + return val == QCA8K_LED_RULE_CONTROLLED; > +} > + >
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