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[2.137.27.33]) by smtp.gmail.com with ESMTPSA id l15sm2613389wmi.48.2020.04.24.05.46.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Apr 2020 05:46:25 -0700 (PDT) From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= To: linux-leds@vger.kernel.org, jacek.anaszewski@gmail.com, jonas.gorski@gmail.com, rpurdie@rpsys.net, pavel@ucw.cz Cc: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Subject: [PATCH] leds-bcm6328: support second hw blinking interval Date: Fri, 24 Apr 2020 14:46:21 +0200 Message-Id: <20200424124621.23005-1-noltari@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-leds-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Add support for both configurable HW blinking intervals. Signed-off-by: Álvaro Fernández Rojas --- drivers/leds/leds-bcm6328.c | 54 ++++++++++++++++++++++++++----------- 1 file changed, 38 insertions(+), 16 deletions(-) diff --git a/drivers/leds/leds-bcm6328.c b/drivers/leds/leds-bcm6328.c index 42e1b7598c3a..beb1aaff68f6 100644 --- a/drivers/leds/leds-bcm6328.c +++ b/drivers/leds/leds-bcm6328.c @@ -24,12 +24,16 @@ #define BCM6328_LED_MAX_COUNT 24 #define BCM6328_LED_DEF_DELAY 500 +#define BCM6328_LED_INTERVAL_NUM 2 #define BCM6328_LED_INTERVAL_MS 20 #define BCM6328_LED_INTV_MASK 0x3f -#define BCM6328_LED_FAST_INTV_SHIFT 6 -#define BCM6328_LED_FAST_INTV_MASK (BCM6328_LED_INTV_MASK << \ - BCM6328_LED_FAST_INTV_SHIFT) +#define BCM6328_LED_INTV1_SHIFT 0 +#define BCM6328_LED_INTV1_MASK (BCM6328_LED_INTV_MASK << \ + BCM6328_LED_INTV1_SHIFT) +#define BCM6328_LED_INTV2_SHIFT 6 +#define BCM6328_LED_INTV2_MASK (BCM6328_LED_INTV_MASK << \ + BCM6328_LED_INTV2_SHIFT) #define BCM6328_SERIAL_LED_EN BIT(12) #define BCM6328_SERIAL_LED_MUX BIT(13) #define BCM6328_SERIAL_LED_CLK_NPOL BIT(14) @@ -45,8 +49,8 @@ #define BCM6328_LED_MODE_MASK 3 #define BCM6328_LED_MODE_ON 0 -#define BCM6328_LED_MODE_FAST 1 -#define BCM6328_LED_MODE_BLINK 2 +#define BCM6328_LED_MODE_INTV1 1 +#define BCM6328_LED_MODE_INTV2 2 #define BCM6328_LED_MODE_OFF 3 #define BCM6328_LED_SHIFT(X) ((X) << 1) @@ -127,7 +131,8 @@ static void bcm6328_led_set(struct led_classdev *led_cdev, unsigned long flags; spin_lock_irqsave(led->lock, flags); - *(led->blink_leds) &= ~BIT(led->pin); + led->blink_leds[0] &= ~BIT(led->pin); + led->blink_leds[1] &= ~BIT(led->pin); if ((led->active_low && value == LED_OFF) || (!led->active_low && value != LED_OFF)) bcm6328_led_mode(led, BCM6328_LED_MODE_ON); @@ -176,20 +181,35 @@ static int bcm6328_blink_set(struct led_classdev *led_cdev, } spin_lock_irqsave(led->lock, flags); - if (*(led->blink_leds) == 0 || - *(led->blink_leds) == BIT(led->pin) || - *(led->blink_delay) == delay) { + if (led->blink_leds[0] == 0 || + led->blink_leds[0] == BIT(led->pin) || + led->blink_delay[0] == delay) { unsigned long val; - *(led->blink_leds) |= BIT(led->pin); - *(led->blink_delay) = delay; + led->blink_leds[0] |= BIT(led->pin); + led->blink_delay[0] = delay; val = bcm6328_led_read(led->mem + BCM6328_REG_INIT); - val &= ~BCM6328_LED_FAST_INTV_MASK; - val |= (delay << BCM6328_LED_FAST_INTV_SHIFT); + val &= ~BCM6328_LED_INTV1_MASK; + val |= (delay << BCM6328_LED_INTV1_SHIFT); bcm6328_led_write(led->mem + BCM6328_REG_INIT, val); - bcm6328_led_mode(led, BCM6328_LED_MODE_BLINK); + bcm6328_led_mode(led, BCM6328_LED_MODE_INTV1); + rc = 0; + } else if (led->blink_leds[1] == 0 || + led->blink_leds[1] == BIT(led->pin) || + led->blink_delay[1] == delay) { + unsigned long val; + + led->blink_leds[1] |= BIT(led->pin); + led->blink_delay[1] = delay; + + val = bcm6328_led_read(led->mem + BCM6328_REG_INIT); + val &= ~BCM6328_LED_INTV2_MASK; + val |= (delay << BCM6328_LED_INTV2_SHIFT); + bcm6328_led_write(led->mem + BCM6328_REG_INIT, val); + + bcm6328_led_mode(led, BCM6328_LED_MODE_INTV2); rc = 0; } else { dev_dbg(led_cdev->dev, @@ -358,11 +378,13 @@ static int bcm6328_leds_probe(struct platform_device *pdev) if (!lock) return -ENOMEM; - blink_leds = devm_kzalloc(dev, sizeof(*blink_leds), GFP_KERNEL); + blink_leds = devm_kcalloc(dev, BCM6328_LED_INTERVAL_NUM, + sizeof(*blink_leds), GFP_KERNEL); if (!blink_leds) return -ENOMEM; - blink_delay = devm_kzalloc(dev, sizeof(*blink_delay), GFP_KERNEL); + blink_delay = devm_kcalloc(dev, BCM6328_LED_INTERVAL_NUM, + sizeof(*blink_delay), GFP_KERNEL); if (!blink_delay) return -ENOMEM; -- 2.20.1