From patchwork Tue Dec 18 15:02:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 154156 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp3815203ljp; Tue, 18 Dec 2018 07:03:59 -0800 (PST) X-Google-Smtp-Source: AFSGD/XH0aEuUmmWi+jRTIbdP5ohL+kijOs8a+ANo7No0Xu30lYm9q14BUZfJlW3khaV72L7LXQ0 X-Received: by 2002:a17:902:850c:: with SMTP id bj12mr16401509plb.46.1545145439096; Tue, 18 Dec 2018 07:03:59 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1545145439; cv=none; d=google.com; s=arc-20160816; b=OPhUKEeVqaAiHYXTrNK8JQ3BHMlIb/4E+T31kjOH3nSw46AmqmJZZgwYWKkxw7Af2H +sQ8wmnxFmxdd9Sqfe80tR2srVLkJ38qkkiozJ5X2EQwEFCGq1U4K5E7I4WEcSCVWY8Y jhFkEKgtGOnsO7SvDL39YuVrp9MOiFYlc6z8oELTWTR/uHyOD8Tq8CHDpM8jqBnezSXh wHJ3Xt2oZBCJaIXJ0pdA+dezaQXNHNUd3UULChmoNpcMjkjz6qYF34XwMJDguCvzPi2C P/AVYIjSdvFZrz48hbqT0TmzVjARxWNo1L+gtudDIrZ20jd6x4Nma7SP3jImuzmu6+Kl ucTw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=zcGwIisGD3xe1Hi10sfTFo4sWeyzLGuK/X6UgTn9Mq8=; b=f2Hr2fXw5z4Tqgtqtojkg86jX3EDlhVA6ZzCshqQJrHYWnPOBeBfgtMfpneQM0oF9W NoOHUgxpKz84pVD/NeJww4phfhXZG9GjQqPKnGY26WCmSo4gaYraGwFQNKJ9Cv/lZH8N 3TMWU7pEEUxVsdkBxOnB1w2bE0zxtSVnlx+gv76Qwx9uQHSjWIdvIjBSV04yYcqSptZJ xTK8lkRDYlewUcfwowLKX0vAOnnHB3PyBq0d3SvObHKQZ9W8Rp69zInyWuwmPhZCq5Ri hTHdu2/w9QGaJX/RQYDRsTYvOIBhV9gHcd/qFSTVKbQytGvBhbCETQNFouIAIdIfoGR3 3Khg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=f6ivAqyq; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id b19si14656558pfm.100.2018.12.18.07.03.58; Tue, 18 Dec 2018 07:03:59 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=f6ivAqyq; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726946AbeLRPD4 (ORCPT + 31 others); Tue, 18 Dec 2018 10:03:56 -0500 Received: from mail-pf1-f194.google.com ([209.85.210.194]:47027 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726733AbeLRPDy (ORCPT ); Tue, 18 Dec 2018 10:03:54 -0500 Received: by mail-pf1-f194.google.com with SMTP id c73so8248313pfe.13 for ; Tue, 18 Dec 2018 07:03:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=zcGwIisGD3xe1Hi10sfTFo4sWeyzLGuK/X6UgTn9Mq8=; b=f6ivAqyq0w5nlhZ64fTOLvUYLzZCviL2IHcDV94FRjYkb0hO0NBSAsTuGvvRQfhbLM IwTNxva5mndlup6iOhak/AtnTwbiJ1iKCa+CaAWCe4OaMy3a6ma33tcuxN8K8z8vFRvc DqKEee/E1gR9OIsfDHQ49/vXQfOAA3695ETos= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=zcGwIisGD3xe1Hi10sfTFo4sWeyzLGuK/X6UgTn9Mq8=; b=kOSPHHWn9Tl/P3yoGnRerQ43bIY9pF7w6zt7UczGeBfBvrY2wpNCxzLKORXyPyw9Py aptDY797w5QI307RrCEcxTFpH/TpXv7qEjaqSlV8XajapWGDWvVdRGDGJD23K6PUPt5W UFHl9l53PP4Ob9VZRcnWBLjXJgh8UQJTMZXyG+BYM2Ztxy3YxcJMMCgyr/RyLWXkxO7C ePKvB0HEmo8V8LN6MHxKaazZaO6e4+JwHR4HuIevIQj9AMJHFG9s9PNrSx5l9aASpS8e 0Fl405JjpadfQSaSEznn3WWeWbpvOt/uS3MOYWPTk+btZ0loQuKzAME24nEXOARVC2U+ OCxA== X-Gm-Message-State: AA+aEWbpBfa/kjNtBA7a/v9SAWa1lFbSGtqWDcxtXJagfsNu111tfewv XeQduQfdQ9v24csVOZju1yCT X-Received: by 2002:a63:8742:: with SMTP id i63mr3163859pge.298.1545145433135; Tue, 18 Dec 2018 07:03:53 -0800 (PST) Received: from localhost.localdomain ([2409:4072:702:382e:8c68:d268:ed20:5f25]) by smtp.gmail.com with ESMTPSA id m198sm28798688pga.10.2018.12.18.07.03.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 18 Dec 2018 07:03:52 -0800 (PST) From: Manivannan Sadhasivam To: olof@lixom.net, arnd@arndb.de, arm@kernel.org, linux-arm-kernel@lists.infradead.org Cc: robh+dt@kernel.org, gregkh@linuxfoundation.org, jslaby@suse.com, linux-unisoc@lists.infradead.org, afaerber@suse.de, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-serial@vger.kernel.org, amit.kucheria@linaro.org, linus.walleij@linaro.org, zhao_steven@263.net, Manivannan Sadhasivam Subject: [PATCH v7 07/11] ARM: dts: rda8810pl: Add timer support Date: Tue, 18 Dec 2018 20:32:34 +0530 Message-Id: <20181218150238.23010-8-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181218150238.23010-1-manivannan.sadhasivam@linaro.org> References: <20181218150238.23010-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add timer support for RDA Micro RDA8810PL SoC. Signed-off-by: Andreas Färber Signed-off-by: Manivannan Sadhasivam Acked-by: Arnd Bergmann --- arch/arm/boot/dts/rda8810pl.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) -- 2.17.1 diff --git a/arch/arm/boot/dts/rda8810pl.dtsi b/arch/arm/boot/dts/rda8810pl.dtsi index 15547b138977..84baa4c0a14c 100644 --- a/arch/arm/boot/dts/rda8810pl.dtsi +++ b/arch/arm/boot/dts/rda8810pl.dtsi @@ -6,6 +6,8 @@ * Copyright (c) 2018 Manivannan Sadhasivam */ +#include + / { compatible = "rda,8810pl"; interrupt-parent = <&intc>; @@ -50,6 +52,14 @@ #address-cells = <1>; #size-cells = <1>; ranges = <0x0 0x20900000 0x100000>; + + timer@10000 { + compatible = "rda,8810pl-timer"; + reg = <0x10000 0x1000>; + interrupts = <16 IRQ_TYPE_LEVEL_HIGH>, + <17 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "hwtimer", "ostimer"; + }; }; apb@20a00000 { From patchwork Tue Dec 18 15:02:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 154159 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp3815842ljp; Tue, 18 Dec 2018 07:04:26 -0800 (PST) X-Google-Smtp-Source: AFSGD/W7Xi/okpHrDGWSggzKAD18unFmQKKC5YyfB8IQvCdm+qjrQSM8NbrbC63l3qvqd0Auf89c X-Received: by 2002:a17:902:2c83:: with SMTP id n3mr16914849plb.104.1545145466617; Tue, 18 Dec 2018 07:04:26 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1545145466; cv=none; d=google.com; s=arc-20160816; b=AJ2LyM1zJ8lv1a2v5cTsM6HeW7GGQ+n5BQoLN3AlJ7aEOOJXWFQaZGMIc4uciVEwzl iauAQgbEPJytVZocswDMzmZvEXC0Xu8mjXXeCuW8tUow1htYLJPAsVRwND+skWd7DjmG wtjacP6dU/iVSANqNoo5+hjyUgLHCUe0oC3/YxEb8XGH3u6jgLn98Wlfhm736fMkj9lC vixe1kk5oWeyq5RNZjC8IhOORsPrWWQpN+Af/2xzhMHTuLUKQZE4vvB2yX37SRZ9kJGv gUJ+mLFAis+pildt1ADlXfrFDyWnXhmVHeat+E+sKyja60QyXAMlDYffSqrXaI6QCtd5 OYNQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=VBsuuxvCakRUGquldLAcUG+VYHY7bpUH1gbnfPFNuxU=; b=Ad9lBb+2hIb97nLEXTZqM9gkJ3inv6Q1MfAko1WdCD/QzV15oNO1C7Bstt/ZJ2pdvA yjwNFkHhAxNuykLYBdOkyO6U7f9dLYbmzloqLFMHxP5x1WjTbSER3Cy+QTxganlowcHz TAjQ26g0Eyp5y9mRR6L0/2R0oSzNGA8CnnDozvjEYjoywid5qUEtayd3qgOvu967ltow OeZ+5qnZblepQZ/rVq+edJe2T67pWavLW8N3i2eK8rKnISP+EGEuKTH5QVtYJ9sSw+rr ctpR/9Exej+hufP8mjaAzmziMnjhbN23GnCpVTLKg82bkD0JbwDdhLYcaNn+kW4QVRZO /v3Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=QD6tXaP6; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id m3si1392717pld.331.2018.12.18.07.04.25; Tue, 18 Dec 2018 07:04:26 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=QD6tXaP6; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727004AbeLRPEY (ORCPT + 31 others); Tue, 18 Dec 2018 10:04:24 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:45107 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726814AbeLRPEW (ORCPT ); Tue, 18 Dec 2018 10:04:22 -0500 Received: by mail-pg1-f196.google.com with SMTP id y4so7920364pgc.12 for ; Tue, 18 Dec 2018 07:04:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=VBsuuxvCakRUGquldLAcUG+VYHY7bpUH1gbnfPFNuxU=; b=QD6tXaP6LHQwKjPqCcH4T2f1MdPVRWU44zoygUrnPhInE2lSonifezeW2MUP8Xv9Gy T1SsD5lC69gveam4Vc5oLFVWyRIF94ow5OnRkpan711YHw1lxdHXxqzJfuIPShsZVzbK QPhCQvtVj3ciPpM/tOtLXoAwjt5fm3sdHXLJA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=VBsuuxvCakRUGquldLAcUG+VYHY7bpUH1gbnfPFNuxU=; b=lnWpzfmtYM4uubnlzQhhpsuLUmXHyVjjp38slT7VL3WXZWBLAwa3GP1SiNxDimH3Ff G180dpJCOIpHyAjhbKAayfLu64M1hp6cIjck9N9O0H+RE2CjKAbcBcBvZdeHos7g9npF 9BTk9XNFaSAzBaWt7WEXE3srpO4a5xa2OYas0g5Uh3nHBw6GgnbvwGk4qdbaAg1iaLNg P/nbnb3I/fInz2zbQWzDsqbSbEfMuVfIMeedFXb0RqSibbNQZLFgcbncfbgwSYSwQMVx +SwKxKNhUS7UpJsolyFjhjHQqiJT5nrJZtPOMEcmuQ4bGOqKm0lFUeDtZJqO8mWjDnWu SuDg== X-Gm-Message-State: AA+aEWZZJpLtinBcfKbkfI0pIDDynxe+uj2gOfzdqUUQaIsAS7sAwnZW SNOtcOuNY18nClcLB/Q4bQpB X-Received: by 2002:a63:a611:: with SMTP id t17mr15799287pge.338.1545145460540; Tue, 18 Dec 2018 07:04:20 -0800 (PST) Received: from localhost.localdomain ([2409:4072:702:382e:8c68:d268:ed20:5f25]) by smtp.gmail.com with ESMTPSA id m198sm28798688pga.10.2018.12.18.07.04.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 18 Dec 2018 07:04:19 -0800 (PST) From: Manivannan Sadhasivam To: olof@lixom.net, arnd@arndb.de, arm@kernel.org, linux-arm-kernel@lists.infradead.org Cc: robh+dt@kernel.org, gregkh@linuxfoundation.org, jslaby@suse.com, linux-unisoc@lists.infradead.org, afaerber@suse.de, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-serial@vger.kernel.org, amit.kucheria@linaro.org, linus.walleij@linaro.org, zhao_steven@263.net, Manivannan Sadhasivam Subject: [PATCH v7 10/11] tty: serial: Add RDA8810PL UART driver Date: Tue, 18 Dec 2018 20:32:37 +0530 Message-Id: <20181218150238.23010-11-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181218150238.23010-1-manivannan.sadhasivam@linaro.org> References: <20181218150238.23010-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add UART driver for RDA Micro RDA8810PL SoC. Signed-off-by: Andreas Färber Signed-off-by: Manivannan Sadhasivam Reviewed-by: Greg Kroah-Hartman Acked-by: Arnd Bergmann --- .../admin-guide/kernel-parameters.txt | 6 + drivers/tty/serial/Kconfig | 19 + drivers/tty/serial/Makefile | 1 + drivers/tty/serial/rda-uart.c | 831 ++++++++++++++++++ include/uapi/linux/serial_core.h | 3 + 5 files changed, 860 insertions(+) create mode 100644 drivers/tty/serial/rda-uart.c -- 2.17.1 diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index aefd358a5ca3..98ee9eaa52be 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1021,6 +1021,12 @@ specified address. The serial port must already be setup and configured. Options are not yet supported. + rda, + Start an early, polled-mode console on a serial port + of an RDA Micro SoC, such as RDA8810PL, at the + specified address. The serial port must already be + setup and configured. Options are not yet supported. + smh Use ARM semihosting calls for early console. s3c2410, diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 32886c304641..67b9bf3b500e 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1529,6 +1529,25 @@ config SERIAL_OWL_CONSOLE Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART as the system console. +config SERIAL_RDA + bool "RDA Micro serial port support" + depends on ARCH_RDA || COMPILE_TEST + select SERIAL_CORE + help + This driver is for RDA8810PL SoC's UART. + Say 'Y' here if you wish to use the on-board serial port. + Otherwise, say 'N'. + +config SERIAL_RDA_CONSOLE + bool "Console on RDA Micro serial port" + depends on SERIAL_RDA=y + select SERIAL_CORE_CONSOLE + select SERIAL_EARLYCON + default y + help + Say 'Y' here if you wish to use the RDA8810PL UART as the system + console. Only earlycon is implemented currently. + endmenu config SERIAL_MCTRL_GPIO diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile index daac675612df..8c303736b7e8 100644 --- a/drivers/tty/serial/Makefile +++ b/drivers/tty/serial/Makefile @@ -89,6 +89,7 @@ obj-$(CONFIG_SERIAL_MVEBU_UART) += mvebu-uart.o obj-$(CONFIG_SERIAL_PIC32) += pic32_uart.o obj-$(CONFIG_SERIAL_MPS2_UART) += mps2-uart.o obj-$(CONFIG_SERIAL_OWL) += owl-uart.o +obj-$(CONFIG_SERIAL_RDA) += rda-uart.o # GPIOLIB helpers for modem control lines obj-$(CONFIG_SERIAL_MCTRL_GPIO) += serial_mctrl_gpio.o diff --git a/drivers/tty/serial/rda-uart.c b/drivers/tty/serial/rda-uart.c new file mode 100644 index 000000000000..284623eefaeb --- /dev/null +++ b/drivers/tty/serial/rda-uart.c @@ -0,0 +1,831 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * RDA8810PL serial device driver + * + * Copyright RDA Microelectronics Company Limited + * Copyright (c) 2017 Andreas Färber + * Copyright (c) 2018 Manivannan Sadhasivam + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define RDA_UART_PORT_NUM 3 +#define RDA_UART_DEV_NAME "ttyRDA" + +#define RDA_UART_CTRL 0x00 +#define RDA_UART_STATUS 0x04 +#define RDA_UART_RXTX_BUFFER 0x08 +#define RDA_UART_IRQ_MASK 0x0c +#define RDA_UART_IRQ_CAUSE 0x10 +#define RDA_UART_IRQ_TRIGGERS 0x14 +#define RDA_UART_CMD_SET 0x18 +#define RDA_UART_CMD_CLR 0x1c + +/* UART_CTRL Bits */ +#define RDA_UART_ENABLE BIT(0) +#define RDA_UART_DBITS_8 BIT(1) +#define RDA_UART_TX_SBITS_2 BIT(2) +#define RDA_UART_PARITY_EN BIT(3) +#define RDA_UART_PARITY(x) (((x) & 0x3) << 4) +#define RDA_UART_PARITY_ODD RDA_UART_PARITY(0) +#define RDA_UART_PARITY_EVEN RDA_UART_PARITY(1) +#define RDA_UART_PARITY_SPACE RDA_UART_PARITY(2) +#define RDA_UART_PARITY_MARK RDA_UART_PARITY(3) +#define RDA_UART_DIV_MODE BIT(20) +#define RDA_UART_IRDA_EN BIT(21) +#define RDA_UART_DMA_EN BIT(22) +#define RDA_UART_FLOW_CNT_EN BIT(23) +#define RDA_UART_LOOP_BACK_EN BIT(24) +#define RDA_UART_RX_LOCK_ERR BIT(25) +#define RDA_UART_RX_BREAK_LEN(x) (((x) & 0xf) << 28) + +/* UART_STATUS Bits */ +#define RDA_UART_RX_FIFO(x) (((x) & 0x7f) << 0) +#define RDA_UART_RX_FIFO_MASK (0x7f << 0) +#define RDA_UART_TX_FIFO(x) (((x) & 0x1f) << 8) +#define RDA_UART_TX_FIFO_MASK (0x1f << 8) +#define RDA_UART_TX_ACTIVE BIT(14) +#define RDA_UART_RX_ACTIVE BIT(15) +#define RDA_UART_RX_OVERFLOW_ERR BIT(16) +#define RDA_UART_TX_OVERFLOW_ERR BIT(17) +#define RDA_UART_RX_PARITY_ERR BIT(18) +#define RDA_UART_RX_FRAMING_ERR BIT(19) +#define RDA_UART_RX_BREAK_INT BIT(20) +#define RDA_UART_DCTS BIT(24) +#define RDA_UART_CTS BIT(25) +#define RDA_UART_DTR BIT(28) +#define RDA_UART_CLK_ENABLED BIT(31) + +/* UART_RXTX_BUFFER Bits */ +#define RDA_UART_RX_DATA(x) (((x) & 0xff) << 0) +#define RDA_UART_TX_DATA(x) (((x) & 0xff) << 0) + +/* UART_IRQ_MASK Bits */ +#define RDA_UART_TX_MODEM_STATUS BIT(0) +#define RDA_UART_RX_DATA_AVAILABLE BIT(1) +#define RDA_UART_TX_DATA_NEEDED BIT(2) +#define RDA_UART_RX_TIMEOUT BIT(3) +#define RDA_UART_RX_LINE_ERR BIT(4) +#define RDA_UART_TX_DMA_DONE BIT(5) +#define RDA_UART_RX_DMA_DONE BIT(6) +#define RDA_UART_RX_DMA_TIMEOUT BIT(7) +#define RDA_UART_DTR_RISE BIT(8) +#define RDA_UART_DTR_FALL BIT(9) + +/* UART_IRQ_CAUSE Bits */ +#define RDA_UART_TX_MODEM_STATUS_U BIT(16) +#define RDA_UART_RX_DATA_AVAILABLE_U BIT(17) +#define RDA_UART_TX_DATA_NEEDED_U BIT(18) +#define RDA_UART_RX_TIMEOUT_U BIT(19) +#define RDA_UART_RX_LINE_ERR_U BIT(20) +#define RDA_UART_TX_DMA_DONE_U BIT(21) +#define RDA_UART_RX_DMA_DONE_U BIT(22) +#define RDA_UART_RX_DMA_TIMEOUT_U BIT(23) +#define RDA_UART_DTR_RISE_U BIT(24) +#define RDA_UART_DTR_FALL_U BIT(25) + +/* UART_TRIGGERS Bits */ +#define RDA_UART_RX_TRIGGER(x) (((x) & 0x1f) << 0) +#define RDA_UART_TX_TRIGGER(x) (((x) & 0xf) << 8) +#define RDA_UART_AFC_LEVEL(x) (((x) & 0x1f) << 16) + +/* UART_CMD_SET Bits */ +#define RDA_UART_RI BIT(0) +#define RDA_UART_DCD BIT(1) +#define RDA_UART_DSR BIT(2) +#define RDA_UART_TX_BREAK_CONTROL BIT(3) +#define RDA_UART_TX_FINISH_N_WAIT BIT(4) +#define RDA_UART_RTS BIT(5) +#define RDA_UART_RX_FIFO_RESET BIT(6) +#define RDA_UART_TX_FIFO_RESET BIT(7) + +#define RDA_UART_TX_FIFO_SIZE 16 + +static struct uart_driver rda_uart_driver; + +struct rda_uart_port { + struct uart_port port; + struct clk *clk; +}; + +#define to_rda_uart_port(port) container_of(port, struct rda_uart_port, port) + +static struct rda_uart_port *rda_uart_ports[RDA_UART_PORT_NUM]; + +static inline void rda_uart_write(struct uart_port *port, u32 val, + unsigned int off) +{ + writel(val, port->membase + off); +} + +static inline u32 rda_uart_read(struct uart_port *port, unsigned int off) +{ + return readl(port->membase + off); +} + +static unsigned int rda_uart_tx_empty(struct uart_port *port) +{ + unsigned long flags; + unsigned int ret; + u32 val; + + spin_lock_irqsave(&port->lock, flags); + + val = rda_uart_read(port, RDA_UART_STATUS); + ret = (val & RDA_UART_TX_FIFO_MASK) ? TIOCSER_TEMT : 0; + + spin_unlock_irqrestore(&port->lock, flags); + + return ret; +} + +static unsigned int rda_uart_get_mctrl(struct uart_port *port) +{ + unsigned int mctrl = 0; + u32 cmd_set, status; + + cmd_set = rda_uart_read(port, RDA_UART_CMD_SET); + status = rda_uart_read(port, RDA_UART_STATUS); + if (cmd_set & RDA_UART_RTS) + mctrl |= TIOCM_RTS; + if (!(status & RDA_UART_CTS)) + mctrl |= TIOCM_CTS; + + return mctrl; +} + +static void rda_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) +{ + u32 val; + + if (mctrl & TIOCM_RTS) { + val = rda_uart_read(port, RDA_UART_CMD_SET); + rda_uart_write(port, (val | RDA_UART_RTS), RDA_UART_CMD_SET); + } else { + /* Clear RTS to stop to receive. */ + val = rda_uart_read(port, RDA_UART_CMD_CLR); + rda_uart_write(port, (val | RDA_UART_RTS), RDA_UART_CMD_CLR); + } + + val = rda_uart_read(port, RDA_UART_CTRL); + + if (mctrl & TIOCM_LOOP) + val |= RDA_UART_LOOP_BACK_EN; + else + val &= ~RDA_UART_LOOP_BACK_EN; + + rda_uart_write(port, val, RDA_UART_CTRL); +} + +static void rda_uart_stop_tx(struct uart_port *port) +{ + u32 val; + + val = rda_uart_read(port, RDA_UART_IRQ_MASK); + val &= ~RDA_UART_TX_DATA_NEEDED; + rda_uart_write(port, val, RDA_UART_IRQ_MASK); + + val = rda_uart_read(port, RDA_UART_CMD_SET); + val |= RDA_UART_TX_FIFO_RESET; + rda_uart_write(port, val, RDA_UART_CMD_SET); +} + +static void rda_uart_stop_rx(struct uart_port *port) +{ + u32 val; + + val = rda_uart_read(port, RDA_UART_IRQ_MASK); + val &= ~(RDA_UART_RX_DATA_AVAILABLE | RDA_UART_RX_TIMEOUT); + rda_uart_write(port, val, RDA_UART_IRQ_MASK); + + /* Read Rx buffer before reset to avoid Rx timeout interrupt */ + val = rda_uart_read(port, RDA_UART_RXTX_BUFFER); + + val = rda_uart_read(port, RDA_UART_CMD_SET); + val |= RDA_UART_RX_FIFO_RESET; + rda_uart_write(port, val, RDA_UART_CMD_SET); +} + +static void rda_uart_start_tx(struct uart_port *port) +{ + u32 val; + + if (uart_tx_stopped(port)) { + rda_uart_stop_tx(port); + return; + } + + val = rda_uart_read(port, RDA_UART_IRQ_MASK); + val |= RDA_UART_TX_DATA_NEEDED; + rda_uart_write(port, val, RDA_UART_IRQ_MASK); +} + +static void rda_uart_change_baudrate(struct rda_uart_port *rda_port, + unsigned long baud) +{ + clk_set_rate(rda_port->clk, baud * 8); +} + +static void rda_uart_set_termios(struct uart_port *port, + struct ktermios *termios, + struct ktermios *old) +{ + struct rda_uart_port *rda_port = to_rda_uart_port(port); + unsigned long flags; + unsigned int ctrl, cmd_set, cmd_clr, triggers; + unsigned int baud; + u32 irq_mask; + + spin_lock_irqsave(&port->lock, flags); + + baud = uart_get_baud_rate(port, termios, old, 9600, port->uartclk / 4); + rda_uart_change_baudrate(rda_port, baud); + + ctrl = rda_uart_read(port, RDA_UART_CTRL); + cmd_set = rda_uart_read(port, RDA_UART_CMD_SET); + cmd_clr = rda_uart_read(port, RDA_UART_CMD_CLR); + + switch (termios->c_cflag & CSIZE) { + case CS5: + case CS6: + dev_warn(port->dev, "bit size not supported, using 7 bits\n"); + /* Fall through */ + case CS7: + ctrl &= ~RDA_UART_DBITS_8; + break; + default: + ctrl |= RDA_UART_DBITS_8; + break; + } + + /* stop bits */ + if (termios->c_cflag & CSTOPB) + ctrl |= RDA_UART_TX_SBITS_2; + else + ctrl &= ~RDA_UART_TX_SBITS_2; + + /* parity check */ + if (termios->c_cflag & PARENB) { + ctrl |= RDA_UART_PARITY_EN; + + /* Mark or Space parity */ + if (termios->c_cflag & CMSPAR) { + if (termios->c_cflag & PARODD) + ctrl |= RDA_UART_PARITY_MARK; + else + ctrl |= RDA_UART_PARITY_SPACE; + } else if (termios->c_cflag & PARODD) { + ctrl |= RDA_UART_PARITY_ODD; + } else { + ctrl |= RDA_UART_PARITY_EVEN; + } + } else { + ctrl &= ~RDA_UART_PARITY_EN; + } + + /* Hardware handshake (RTS/CTS) */ + if (termios->c_cflag & CRTSCTS) { + ctrl |= RDA_UART_FLOW_CNT_EN; + cmd_set |= RDA_UART_RTS; + } else { + ctrl &= ~RDA_UART_FLOW_CNT_EN; + cmd_clr |= RDA_UART_RTS; + } + + ctrl |= RDA_UART_ENABLE; + ctrl &= ~RDA_UART_DMA_EN; + + triggers = (RDA_UART_AFC_LEVEL(20) | RDA_UART_RX_TRIGGER(16)); + irq_mask = rda_uart_read(port, RDA_UART_IRQ_MASK); + rda_uart_write(port, 0, RDA_UART_IRQ_MASK); + + rda_uart_write(port, triggers, RDA_UART_IRQ_TRIGGERS); + rda_uart_write(port, ctrl, RDA_UART_CTRL); + rda_uart_write(port, cmd_set, RDA_UART_CMD_SET); + rda_uart_write(port, cmd_clr, RDA_UART_CMD_CLR); + + rda_uart_write(port, irq_mask, RDA_UART_IRQ_MASK); + + /* Don't rewrite B0 */ + if (tty_termios_baud_rate(termios)) + tty_termios_encode_baud_rate(termios, baud, baud); + + /* update the per-port timeout */ + uart_update_timeout(port, termios->c_cflag, baud); + + spin_unlock_irqrestore(&port->lock, flags); +} + +static void rda_uart_send_chars(struct uart_port *port) +{ + struct circ_buf *xmit = &port->state->xmit; + unsigned int ch; + u32 val; + + if (uart_tx_stopped(port)) + return; + + if (port->x_char) { + while (!(rda_uart_read(port, RDA_UART_STATUS) & + RDA_UART_TX_FIFO_MASK)) + cpu_relax(); + + rda_uart_write(port, port->x_char, RDA_UART_RXTX_BUFFER); + port->icount.tx++; + port->x_char = 0; + } + + while (rda_uart_read(port, RDA_UART_STATUS) & RDA_UART_TX_FIFO_MASK) { + if (uart_circ_empty(xmit)) + break; + + ch = xmit->buf[xmit->tail]; + rda_uart_write(port, ch, RDA_UART_RXTX_BUFFER); + xmit->tail = (xmit->tail + 1) & (SERIAL_XMIT_SIZE - 1); + port->icount.tx++; + } + + if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) + uart_write_wakeup(port); + + if (!uart_circ_empty(xmit)) { + /* Re-enable Tx FIFO interrupt */ + val = rda_uart_read(port, RDA_UART_IRQ_MASK); + val |= RDA_UART_TX_DATA_NEEDED; + rda_uart_write(port, val, RDA_UART_IRQ_MASK); + } +} + +static void rda_uart_receive_chars(struct uart_port *port) +{ + u32 status, val; + + status = rda_uart_read(port, RDA_UART_STATUS); + while ((status & RDA_UART_RX_FIFO_MASK)) { + char flag = TTY_NORMAL; + + if (status & RDA_UART_RX_PARITY_ERR) { + port->icount.parity++; + flag = TTY_PARITY; + } + + if (status & RDA_UART_RX_FRAMING_ERR) { + port->icount.frame++; + flag = TTY_FRAME; + } + + if (status & RDA_UART_RX_OVERFLOW_ERR) { + port->icount.overrun++; + flag = TTY_OVERRUN; + } + + val = rda_uart_read(port, RDA_UART_RXTX_BUFFER); + val &= 0xff; + + port->icount.rx++; + tty_insert_flip_char(&port->state->port, val, flag); + + status = rda_uart_read(port, RDA_UART_STATUS); + } + + spin_unlock(&port->lock); + tty_flip_buffer_push(&port->state->port); + spin_lock(&port->lock); +} + +static irqreturn_t rda_interrupt(int irq, void *dev_id) +{ + struct uart_port *port = dev_id; + unsigned long flags; + u32 val, irq_mask; + + spin_lock_irqsave(&port->lock, flags); + + /* Clear IRQ cause */ + val = rda_uart_read(port, RDA_UART_IRQ_CAUSE); + rda_uart_write(port, val, RDA_UART_IRQ_CAUSE); + + if (val & (RDA_UART_RX_DATA_AVAILABLE | RDA_UART_RX_TIMEOUT)) + rda_uart_receive_chars(port); + + if (val & (RDA_UART_TX_DATA_NEEDED)) { + irq_mask = rda_uart_read(port, RDA_UART_IRQ_MASK); + irq_mask &= ~RDA_UART_TX_DATA_NEEDED; + rda_uart_write(port, irq_mask, RDA_UART_IRQ_MASK); + + rda_uart_send_chars(port); + } + + spin_unlock_irqrestore(&port->lock, flags); + + return IRQ_HANDLED; +} + +static int rda_uart_startup(struct uart_port *port) +{ + unsigned long flags; + int ret; + u32 val; + + spin_lock_irqsave(&port->lock, flags); + rda_uart_write(port, 0, RDA_UART_IRQ_MASK); + spin_unlock_irqrestore(&port->lock, flags); + + ret = request_irq(port->irq, rda_interrupt, IRQF_NO_SUSPEND, + "rda-uart", port); + if (ret) + return ret; + + spin_lock_irqsave(&port->lock, flags); + + val = rda_uart_read(port, RDA_UART_CTRL); + val |= RDA_UART_ENABLE; + rda_uart_write(port, val, RDA_UART_CTRL); + + /* enable rx interrupt */ + val = rda_uart_read(port, RDA_UART_IRQ_MASK); + val |= (RDA_UART_RX_DATA_AVAILABLE | RDA_UART_RX_TIMEOUT); + rda_uart_write(port, val, RDA_UART_IRQ_MASK); + + spin_unlock_irqrestore(&port->lock, flags); + + return 0; +} + +static void rda_uart_shutdown(struct uart_port *port) +{ + unsigned long flags; + u32 val; + + spin_lock_irqsave(&port->lock, flags); + + rda_uart_stop_tx(port); + rda_uart_stop_rx(port); + + val = rda_uart_read(port, RDA_UART_CTRL); + val &= ~RDA_UART_ENABLE; + rda_uart_write(port, val, RDA_UART_CTRL); + + spin_unlock_irqrestore(&port->lock, flags); +} + +static const char *rda_uart_type(struct uart_port *port) +{ + return (port->type == PORT_RDA) ? "rda-uart" : NULL; +} + +static int rda_uart_request_port(struct uart_port *port) +{ + struct platform_device *pdev = to_platform_device(port->dev); + struct resource *res; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENXIO; + + if (!devm_request_mem_region(port->dev, port->mapbase, + resource_size(res), dev_name(port->dev))) + return -EBUSY; + + if (port->flags & UPF_IOREMAP) { + port->membase = devm_ioremap_nocache(port->dev, port->mapbase, + resource_size(res)); + if (!port->membase) + return -EBUSY; + } + + return 0; +} + +static void rda_uart_config_port(struct uart_port *port, int flags) +{ + unsigned long irq_flags; + + if (flags & UART_CONFIG_TYPE) { + port->type = PORT_RDA; + rda_uart_request_port(port); + } + + spin_lock_irqsave(&port->lock, irq_flags); + + /* Clear mask, so no surprise interrupts. */ + rda_uart_write(port, 0, RDA_UART_IRQ_MASK); + + /* Clear status register */ + rda_uart_write(port, 0, RDA_UART_STATUS); + + spin_unlock_irqrestore(&port->lock, irq_flags); +} + +static void rda_uart_release_port(struct uart_port *port) +{ + struct platform_device *pdev = to_platform_device(port->dev); + struct resource *res; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return; + + if (port->flags & UPF_IOREMAP) { + devm_release_mem_region(port->dev, port->mapbase, + resource_size(res)); + devm_iounmap(port->dev, port->membase); + port->membase = NULL; + } +} + +static int rda_uart_verify_port(struct uart_port *port, + struct serial_struct *ser) +{ + if (port->type != PORT_RDA) + return -EINVAL; + + if (port->irq != ser->irq) + return -EINVAL; + + return 0; +} + +static const struct uart_ops rda_uart_ops = { + .tx_empty = rda_uart_tx_empty, + .get_mctrl = rda_uart_get_mctrl, + .set_mctrl = rda_uart_set_mctrl, + .start_tx = rda_uart_start_tx, + .stop_tx = rda_uart_stop_tx, + .stop_rx = rda_uart_stop_rx, + .startup = rda_uart_startup, + .shutdown = rda_uart_shutdown, + .set_termios = rda_uart_set_termios, + .type = rda_uart_type, + .request_port = rda_uart_request_port, + .release_port = rda_uart_release_port, + .config_port = rda_uart_config_port, + .verify_port = rda_uart_verify_port, +}; + +#ifdef CONFIG_SERIAL_RDA_CONSOLE + +static void rda_console_putchar(struct uart_port *port, int ch) +{ + if (!port->membase) + return; + + while (!(rda_uart_read(port, RDA_UART_STATUS) & RDA_UART_TX_FIFO_MASK)) + cpu_relax(); + + rda_uart_write(port, ch, RDA_UART_RXTX_BUFFER); +} + +static void rda_uart_port_write(struct uart_port *port, const char *s, + u_int count) +{ + u32 old_irq_mask; + unsigned long flags; + int locked; + + local_irq_save(flags); + + if (port->sysrq) { + locked = 0; + } else if (oops_in_progress) { + locked = spin_trylock(&port->lock); + } else { + spin_lock(&port->lock); + locked = 1; + } + + old_irq_mask = rda_uart_read(port, RDA_UART_IRQ_MASK); + rda_uart_write(port, 0, RDA_UART_IRQ_MASK); + + uart_console_write(port, s, count, rda_console_putchar); + + /* wait until all contents have been sent out */ + while (!(rda_uart_read(port, RDA_UART_STATUS) & RDA_UART_TX_FIFO_MASK)) + cpu_relax(); + + rda_uart_write(port, old_irq_mask, RDA_UART_IRQ_MASK); + + if (locked) + spin_unlock(&port->lock); + + local_irq_restore(flags); +} + +static void rda_uart_console_write(struct console *co, const char *s, + u_int count) +{ + struct rda_uart_port *rda_port; + + rda_port = rda_uart_ports[co->index]; + if (!rda_port) + return; + + rda_uart_port_write(&rda_port->port, s, count); +} + +static int rda_uart_console_setup(struct console *co, char *options) +{ + struct rda_uart_port *rda_port; + int baud = 921600; + int bits = 8; + int parity = 'n'; + int flow = 'n'; + + if (co->index < 0 || co->index >= RDA_UART_PORT_NUM) + return -EINVAL; + + rda_port = rda_uart_ports[co->index]; + if (!rda_port || !rda_port->port.membase) + return -ENODEV; + + if (options) + uart_parse_options(options, &baud, &parity, &bits, &flow); + + return uart_set_options(&rda_port->port, co, baud, parity, bits, flow); +} + +static struct console rda_uart_console = { + .name = RDA_UART_DEV_NAME, + .write = rda_uart_console_write, + .device = uart_console_device, + .setup = rda_uart_console_setup, + .flags = CON_PRINTBUFFER, + .index = -1, + .data = &rda_uart_driver, +}; + +static int __init rda_uart_console_init(void) +{ + register_console(&rda_uart_console); + + return 0; +} +console_initcall(rda_uart_console_init); + +static void rda_uart_early_console_write(struct console *co, + const char *s, + u_int count) +{ + struct earlycon_device *dev = co->data; + + rda_uart_port_write(&dev->port, s, count); +} + +static int __init +rda_uart_early_console_setup(struct earlycon_device *device, const char *opt) +{ + if (!device->port.membase) + return -ENODEV; + + device->con->write = rda_uart_early_console_write; + + return 0; +} + +OF_EARLYCON_DECLARE(rda, "rda,8810pl-uart", + rda_uart_early_console_setup); + +#define RDA_UART_CONSOLE (&rda_uart_console) +#else +#define RDA_UART_CONSOLE NULL +#endif /* CONFIG_SERIAL_RDA_CONSOLE */ + +static struct uart_driver rda_uart_driver = { + .owner = THIS_MODULE, + .driver_name = "rda-uart", + .dev_name = RDA_UART_DEV_NAME, + .nr = RDA_UART_PORT_NUM, + .cons = RDA_UART_CONSOLE, +}; + +static const struct of_device_id rda_uart_dt_matches[] = { + { .compatible = "rda,8810pl-uart" }, + { } +}; +MODULE_DEVICE_TABLE(of, rda_uart_dt_matches); + +static int rda_uart_probe(struct platform_device *pdev) +{ + struct resource *res_mem; + struct rda_uart_port *rda_port; + int ret, irq; + + if (pdev->dev.of_node) + pdev->id = of_alias_get_id(pdev->dev.of_node, "serial"); + + if (pdev->id < 0 || pdev->id >= RDA_UART_PORT_NUM) { + dev_err(&pdev->dev, "id %d out of range\n", pdev->id); + return -EINVAL; + } + + res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res_mem) { + dev_err(&pdev->dev, "could not get mem\n"); + return -ENODEV; + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "could not get irq\n"); + return irq; + } + + if (rda_uart_ports[pdev->id]) { + dev_err(&pdev->dev, "port %d already allocated\n", pdev->id); + return -EBUSY; + } + + rda_port = devm_kzalloc(&pdev->dev, sizeof(*rda_port), GFP_KERNEL); + if (!rda_port) + return -ENOMEM; + + rda_port->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(rda_port->clk)) { + dev_err(&pdev->dev, "could not get clk\n"); + return PTR_ERR(rda_port->clk); + } + + rda_port->port.dev = &pdev->dev; + rda_port->port.regshift = 0; + rda_port->port.line = pdev->id; + rda_port->port.type = PORT_RDA; + rda_port->port.iotype = UPIO_MEM; + rda_port->port.mapbase = res_mem->start; + rda_port->port.irq = irq; + rda_port->port.uartclk = clk_get_rate(rda_port->clk); + if (rda_port->port.uartclk == 0) { + dev_err(&pdev->dev, "clock rate is zero\n"); + return -EINVAL; + } + rda_port->port.flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | + UPF_LOW_LATENCY; + rda_port->port.x_char = 0; + rda_port->port.fifosize = RDA_UART_TX_FIFO_SIZE; + rda_port->port.ops = &rda_uart_ops; + + rda_uart_ports[pdev->id] = rda_port; + platform_set_drvdata(pdev, rda_port); + + ret = uart_add_one_port(&rda_uart_driver, &rda_port->port); + if (ret) + rda_uart_ports[pdev->id] = NULL; + + return ret; +} + +static int rda_uart_remove(struct platform_device *pdev) +{ + struct rda_uart_port *rda_port = platform_get_drvdata(pdev); + + uart_remove_one_port(&rda_uart_driver, &rda_port->port); + rda_uart_ports[pdev->id] = NULL; + + return 0; +} + +static struct platform_driver rda_uart_platform_driver = { + .probe = rda_uart_probe, + .remove = rda_uart_remove, + .driver = { + .name = "rda-uart", + .of_match_table = rda_uart_dt_matches, + }, +}; + +static int __init rda_uart_init(void) +{ + int ret; + + ret = uart_register_driver(&rda_uart_driver); + if (ret) + return ret; + + ret = platform_driver_register(&rda_uart_platform_driver); + if (ret) + uart_unregister_driver(&rda_uart_driver); + + return ret; +} + +static void __init rda_uart_exit(void) +{ + platform_driver_unregister(&rda_uart_platform_driver); + uart_unregister_driver(&rda_uart_driver); +} + +module_init(rda_uart_init); +module_exit(rda_uart_exit); + +MODULE_AUTHOR("Manivannan Sadhasivam "); +MODULE_DESCRIPTION("RDA8810PL serial device driver"); +MODULE_LICENSE("GPL"); diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h index dce5f9dae121..df4a7534e239 100644 --- a/include/uapi/linux/serial_core.h +++ b/include/uapi/linux/serial_core.h @@ -281,4 +281,7 @@ /* MediaTek BTIF */ #define PORT_MTK_BTIF 117 +/* RDA UART */ +#define PORT_RDA 118 + #endif /* _UAPILINUX_SERIAL_CORE_H */