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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc; bh=xevi7s0+mr+ptfy7uVrWQvtAVkuN9tBhA8DON7VF3hc=; b=Ck2PJU1EOVpRYsBs7ifmIMk92bZQafm54pmurS4ybo9C4PC7q2arOzTqPJuwP3en1U MPFlws0UKRhGxdQt7zW8ql5gYex7GPyctgp4IUb/YuZ/0+TXLgboS0cFwfXM19efB07K f8/NGRvj38x6fDjufrlPbuxAS4IV1kmbiWYJVsV7Wh1vKZY3nREUnzPEmKQjqZDN4hUC gg31yC/nhwyLAFhodBOT5g6kHQ9Cg9qhM2xQEwBmQoOiUBPLRk8MExyM7y4dD17W7ER7 UPiNHnFLDLDYiugfl/Gsl5WlBOoyCg8MpU23fr5wtGHt++vsn5oFTbBtu4HA67ZovYRv ECiA== X-Gm-Message-State: ACgBeo1kqBlQ4jBP/lYae7ifXILX6OL+aGg5YHQrcNdBJfEgKG+c/GDe 991iaN4tdwsZ8bOp8g0e1mNLRFSalc1Rnwqvqac= X-Google-Smtp-Source: AA6agR616g5NuJiBX7N2EN5Udk4icnJWQWfoN9qnVhTU27eNGicOdpHWiuxBhRNAeZcqXVc1r4KkqHm9jBQr5PV+ypI= X-Received: by 2002:ac8:5784:0:b0:31f:24e:93f5 with SMTP id v4-20020ac85784000000b0031f024e93f5mr5286928qta.429.1659697674792; Fri, 05 Aug 2022 04:07:54 -0700 (PDT) MIME-Version: 1.0 References: <20220805070610.3516-1-peterwu.pub@gmail.com> <20220805070610.3516-12-peterwu.pub@gmail.com> In-Reply-To: <20220805070610.3516-12-peterwu.pub@gmail.com> From: Andy Shevchenko Date: Fri, 5 Aug 2022 13:07:18 +0200 Message-ID: Subject: Re: [PATCH v7 11/13] leds: rgb: mt6370: Add MediaTek MT6370 current sink type LED Indicator support To: ChiaEn Wu Cc: Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Matthias Brugger , Sebastian Reichel , Chunfeng Yun , Greg Kroah-Hartman , Jonathan Cameron , Lars-Peter Clausen , Liam Girdwood , Mark Brown , Guenter Roeck , "Krogerus, Heikki" , Helge Deller , ChiaEn Wu , Alice Chen , cy_huang , dri-devel , Linux LED Subsystem , devicetree , linux-arm Mailing List , "moderated list:ARM/Mediatek SoC support" , Linux Kernel Mailing List , Linux PM , USB , linux-iio , "open list:FRAMEBUFFER LAYER" , szuni chen , AngeloGioacchino Del Regno X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220805_040756_911713_20E3F87B X-CRM114-Status: GOOD ( 21.15 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Aug 5, 2022 at 9:07 AM ChiaEn Wu wrote: > > From: ChiYuan Huang > > 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. > > Add a support for the MediaTek MT6370 Current Sink Type LED Indicator Add support (This is also for all other commit messages) > driver. It can control four channels current-sink RGB LEDs with 3 modes, 3 modes: > constant current, PWM, and breath mode. ... > +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; > + u32 val = 0; > + 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 == 0 ? 8 : 0; > + val |= sel << (i % 2 == 0 ? 4 : 0); It's too cryptic, why not simply: if (i % 2) { val |= sel; } else { val <<= 8; val |= sel << 4; } ? > + } > + > + put_unaligned_be24(val, pattern_val); > + > + return 0; > +} ... > + const char * const states[] = { "off", "keep", "on" }; > + ret = fwnode_property_read_string(init_data->fwnode, "default-state", > + &stat_str); > + if (!ret) { > + ret = match_string(states, ARRAY_SIZE(states), stat_str); > + if (ret < 0) > + ret = STATE_OFF; > + > + led->default_state = ret; > + } Replace this by using led_init_default_state_get(). -- With Best Regards, Andy Shevchenko _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel