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Message-ID: <CAHp75VewxvEDGoPdRBvLSLQOQ6OZzVft1ce3DkF7MK_O1VXZkQ@mail.gmail.com>
Date: Mon, 25 Jul 2022 10:40:32 +0200
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: ChiaEn Wu <peterwu.pub@...il.com>
Cc: Lee Jones <lee.jones@...aro.org>,
Daniel Thompson <daniel.thompson@...aro.org>,
Jingoo Han <jingoohan1@...il.com>, Pavel Machek <pavel@....cz>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Sebastian Reichel <sre@...nel.org>,
Chunfeng Yun <chunfeng.yun@...iatek.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Guenter Roeck <linux@...ck-us.net>,
"Krogerus, Heikki" <heikki.krogerus@...ux.intel.com>,
Helge Deller <deller@....de>,
ChiaEn Wu <chiaen_wu@...htek.com>,
Alice Chen <alice_chen@...htek.com>,
cy_huang <cy_huang@...htek.com>,
dri-devel <dri-devel@...ts.freedesktop.org>,
Linux LED Subsystem <linux-leds@...r.kernel.org>,
devicetree <devicetree@...r.kernel.org>,
linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@...ts.infradead.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux PM <linux-pm@...r.kernel.org>,
USB <linux-usb@...r.kernel.org>,
linux-iio <linux-iio@...r.kernel.org>,
"open list:FRAMEBUFFER LAYER" <linux-fbdev@...r.kernel.org>,
szuni chen <szunichen@...il.com>
Subject: Re: [PATCH v6 11/13] leds: rgb: mt6370: Add MediaTek MT6370 current
sink type LED Indicator support
On Fri, Jul 22, 2022 at 12:25 PM ChiaEn Wu <peterwu.pub@...il.com> wrote:
>
> From: ChiYuan Huang <cy_huang@...htek.com>
^^^^ (Note this and read below)
>
> The MediaTek MT6370 is a highly-integrated smart power management IC,
> which includes a single cell Li-Ion/Li-Polymer switching battery
> charger, a USB Type-C & Power Delivery (PD) controller, dual
> Flash LED current sources, a RGB LED driver, a backlight WLED driver,
> a display bias driver and a general LDO for portable devices.
>
> In MediaTek MT6370, there are four channel current-sink RGB LEDs that
> support hardware pattern for constant current, PWM, and breath mode.
> Isink4 channel can also be used as a CHG_VIN power good indicator.
> Signed-off-by: Alice Chen <alice_chen@...htek.com>
> Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
In conjunction with above what SoB of Alice means?
You really need to take your time and (re-)read
https://www.kernel.org/doc/html/latest/process/submitting-patches.html.
...
> + * Author: Alice Chen <alice_chen@...htek.com>
> + * Author: ChiYuan Huang <cy_huang@...htek.com>
Would
* Authors:
* Name_of_Author 1
* Name_of_Author 2
work for you?
...
> +struct mt6370_led {
> + union {
> + struct led_classdev isink;
> + struct led_classdev_mc mc;
> + };
Where is the field that makes union work?
> + struct mt6370_priv *priv;
> + u32 default_state;
> + u32 index;
> +};
...
> +static int mt6370_gen_breath_pattern(struct mt6370_priv *priv,
> + struct led_pattern *pattern, u32 len,
> + u8 *pattern_val, u32 val_len)
> +{
> + enum mt6370_led_ranges sel_range;
> + struct led_pattern *curr;
> + unsigned int sel;
> + u8 val[P_MAX_PATTERNS / 2] = {};
> + int i;
> +
> + if (len < P_MAX_PATTERNS && val_len < P_MAX_PATTERNS / 2)
> + return -EINVAL;
> +
> + /*
> + * Pattern list
> + * tr1: byte 0, b'[7: 4]
> + * tr2: byte 0, b'[3: 0]
> + * tf1: byte 1, b'[7: 4]
> + * tf2: byte 1, b'[3: 0]
> + * ton: byte 2, b'[7: 4]
> + * toff: byte 2, b'[3: 0]
> + */
> + for (i = 0; i < P_MAX_PATTERNS; i++) {
> + curr = pattern + i;
> +
> + sel_range = i == P_LED_TOFF ? R_LED_TOFF : R_LED_TRFON;
> +
> + linear_range_get_selector_within(priv->ranges + sel_range,
> + curr->delta_t, &sel);
> +
> + val[i / 2] |= sel << (4 * ((i + 1) % 2));
> + }
> +
> + memcpy(pattern_val, val, 3);
Isn't it something like put_unaligned_be24()/put_unaligned_le24()?
> + return 0;
> +}
...
> +static inline int mt6370_mc_pattern_clear(struct led_classdev *lcdev)
> +{
> + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev);
> + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc);
> + struct mt6370_priv *priv = led->priv;
> + struct mc_subled *subled;
> + int i, ret = 0;
Redundant assignment.
> + mutex_lock(&led->priv->lock);
> +
> + for (i = 0; i < mccdev->num_colors; i++) {
> + subled = mccdev->subled_info + i;
> +
> + ret = mt6370_set_led_mode(priv, subled->channel,
> + MT6370_LED_REG_MODE);
> + if (ret)
> + break;
> + }
> +
> + mutex_unlock(&led->priv->lock);
> +
> + return ret;
> +}
...
> + if (!fwnode_property_read_string(init_data->fwnode, "default-state",
> + &stat_str)) {
ret = fwnode_...(...);
if (!ret)
> + ret = match_string(states, ARRAY_SIZE(states), stat_str);
> + if (ret < 0)
> + ret = STATE_OFF;
> +
> + led->default_state = ret;
> + }
...
> + int i = 0, ret;
unsigned int i = 0;
int ret;
--
With Best Regards,
Andy Shevchenko
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