From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD1CCC43140 for ; Thu, 5 Sep 2019 14:20:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CE84E21BE5 for ; Thu, 5 Sep 2019 14:14:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RqHOFOnG"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="owLoTCg2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CE84E21BE5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=euZ84duMeHfWQDlF5xhciLugK/gVq2jadfoNd1CGQrA=; b=RqHOFOnGhre4dn dWoU+hzPOdci6dPwJbdV2kMm7ZVJn6xD5yXhZ919T/ka68FNlFwsnweutahF0zrw9++b4NSnslrSu dz9my1EDrdSQCUmF0MK6LTBPRaaRYB5ATcH0dYyvWimOQJzyZn9dYDv2D7ShHiGoZQqSE4FrYYP5J GZ94PK0gU5uF9x9EBaE2F8CiWkCauVP490tuC2OKoyeox/JpI5QPoKPJ4r7B0Jp+fdVzLmjZpY3A3 1AxEQ7mSam4Ib3vE/DreMzFpoTY4jKWncWr+UUc2UnZCqDDYUOoKkDQxpW/hwp5aTuVJVoHcAo081 lOKqTc9Rx/bSfO+ch19g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i5sWM-0001VG-AA; Thu, 05 Sep 2019 14:13:58 +0000 Received: from merlin.infradead.org ([2001:8b0:10b:1231::1]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i5sWK-0001V7-UK for linux-arm-kernel@bombadil.infradead.org; Thu, 05 Sep 2019 14:13:56 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=0J2eF/GJkYBlAV9bsnnTBObhosClR3AQeu2oGuzNZNA=; b=owLoTCg2OEV1iBW67N0j/SMK4n aINszVFMCn3WUAHCIe1qdW0Je5p/nXJuESt6LHRzHaGIyberJg4tNZ3BrmVXjjWFWDIHea1N3PW7W OjjISGM44JGpjmWRfcAdivUXJtPlq5zJZrXb2jrpy81hrnhWlXAPsudzeWSQR71PPdw4eoAHP1jqj Te5jzGDAT5wUCPukFDw/y2V6l4MF2RtaSmc3BJPNvts04PwwQ4kPEgPFqnvhqMyLznFAhTnHm1MRH nCxNNpQZaca5EtLNYO6zVxoUd5HPrWLFsEWbU8LwBnuGNWoXsvXslgvvmz/pnp3M3+xxpQ3o7kYc8 BDjHRnIQ==; Received: from relay7-d.mail.gandi.net ([217.70.183.200]) by merlin.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i5sWH-0008Mu-Vg for linux-arm-kernel@lists.infradead.org; Thu, 05 Sep 2019 14:13:55 +0000 X-Originating-IP: 86.207.98.53 Received: from localhost (aclermont-ferrand-651-1-259-53.w86-207.abo.wanadoo.fr [86.207.98.53]) (Authenticated sender: alexandre.belloni@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id DF4D72002B; Thu, 5 Sep 2019 14:13:13 +0000 (UTC) From: Alexandre Belloni To: Linus Walleij Subject: [PATCH] pinctrl: at91-pio4: implement .get_multiple and .set_multiple Date: Thu, 5 Sep 2019 16:13:04 +0200 Message-Id: <20190905141304.22005-1-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexandre Belloni , linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, Ludovic Desroches , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Implement .get_multiple and .set_multiple to allow reading or setting multiple pins simultaneously. Pins in the same bank will all be switched at the same time, improving synchronization and performances. Signed-off-by: Alexandre Belloni --- drivers/pinctrl/pinctrl-at91-pio4.c | 60 +++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) diff --git a/drivers/pinctrl/pinctrl-at91-pio4.c b/drivers/pinctrl/pinctrl-at91-pio4.c index d6de4d360cd4..488a302a60d4 100644 --- a/drivers/pinctrl/pinctrl-at91-pio4.c +++ b/drivers/pinctrl/pinctrl-at91-pio4.c @@ -328,6 +328,35 @@ static int atmel_gpio_get(struct gpio_chip *chip, unsigned offset) return !!(reg & BIT(pin->line)); } +static int atmel_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask, + unsigned long *bits) +{ + struct atmel_pioctrl *atmel_pioctrl = gpiochip_get_data(chip); + unsigned int bank; + + bitmap_zero(bits, atmel_pioctrl->npins); + + for (bank = 0; bank < atmel_pioctrl->nbanks; bank++) { + unsigned int word = bank; + unsigned int offset = 0; + unsigned int reg; + +#if ATMEL_PIO_NPINS_PER_BANK != BITS_PER_LONG + word = BIT_WORD(bank * ATMEL_PIO_NPINS_PER_BANK); + offset = bank * ATMEL_PIO_NPINS_PER_BANK % BITS_PER_LONG; +#endif + if (!mask[word]) + continue; + + reg = atmel_gpio_read(atmel_pioctrl, bank, ATMEL_PIO_PDSR); + bits[word] |= mask[word] & (reg << offset); + + pr_err("ABE: %d %08x\n", bank, bits[word]); + } + + return 0; +} + static int atmel_gpio_direction_output(struct gpio_chip *chip, unsigned offset, int value) { @@ -358,11 +387,42 @@ static void atmel_gpio_set(struct gpio_chip *chip, unsigned offset, int val) BIT(pin->line)); } +static void atmel_gpio_set_multiple(struct gpio_chip *chip, unsigned long *mask, + unsigned long *bits) +{ + struct atmel_pioctrl *atmel_pioctrl = gpiochip_get_data(chip); + unsigned int bank; + + for (bank = 0; bank < atmel_pioctrl->nbanks; bank++) { + unsigned int bitmask; + unsigned int word = bank; + +#if ATMEL_PIO_NPINS_PER_BANK != BITS_PER_LONG + word = BIT_WORD(bank * ATMEL_PIO_NPINS_PER_BANK); +#endif + if (!mask[word]) + continue; + + bitmask = mask[word] & bits[word]; + atmel_gpio_write(atmel_pioctrl, bank, ATMEL_PIO_SODR, bitmask); + + bitmask = mask[word] & ~bits[word]; + atmel_gpio_write(atmel_pioctrl, bank, ATMEL_PIO_CODR, bitmask); + +#if ATMEL_PIO_NPINS_PER_BANK != BITS_PER_LONG + mask[word] >>= ATMEL_PIO_NPINS_PER_BANK; + bits[word] >>= ATMEL_PIO_NPINS_PER_BANK; +#endif + } +} + static struct gpio_chip atmel_gpio_chip = { .direction_input = atmel_gpio_direction_input, .get = atmel_gpio_get, + .get_multiple = atmel_gpio_get_multiple, .direction_output = atmel_gpio_direction_output, .set = atmel_gpio_set, + .set_multiple = atmel_gpio_set_multiple, .to_irq = atmel_gpio_to_irq, .base = 0, }; -- 2.21.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel