From patchwork Thu Apr 11 15:00:18 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Christophe PLAGNIOL-VILLARD X-Patchwork-Id: 2429201 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id A60EEDF230 for ; Thu, 11 Apr 2013 15:12:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935938Ab3DKPMU (ORCPT ); Thu, 11 Apr 2013 11:12:20 -0400 Received: from 2.mo3.mail-out.ovh.net ([46.105.75.36]:52679 "EHLO mo3.mail-out.ovh.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S935824Ab3DKPMS (ORCPT ); Thu, 11 Apr 2013 11:12:18 -0400 Received: from mail181.ha.ovh.net (b9.ovh.net [213.186.33.59]) by mo3.mail-out.ovh.net (Postfix) with SMTP id 8265EFF94A5 for ; Thu, 11 Apr 2013 17:04:29 +0200 (CEST) Received: from b0.ovh.net (HELO queueout) (213.186.33.50) by b0.ovh.net with SMTP; 11 Apr 2013 17:04:29 +0200 Received: from ns32433.ovh.net (HELO localhost) (plagnioj%jcrosoft.com@213.251.161.87) by ns0.ovh.net with SMTP; 11 Apr 2013 17:04:25 +0200 From: Jean-Christophe PLAGNIOL-VILLARD To: linux-arm-kernel@lists.infradead.org Cc: devicetree-discuss@lists.ozlabs.org, Jean-Christophe PLAGNIOL-VILLARD , linux-fbdev@vger.kernel.org, Nicolas Ferre , Andrew Morton X-Ovh-Mailout: 178.32.228.3 (mo3.mail-out.ovh.net) Subject: [PATCH 4/8] video: atmel_lcdfb: add device tree suport Date: Thu, 11 Apr 2013 17:00:18 +0200 Message-Id: <1365692422-9565-4-git-send-email-plagnioj@jcrosoft.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1365692422-9565-1-git-send-email-plagnioj@jcrosoft.com> References: <20130411145741.GB25242@game.jcrosoft.org> <1365692422-9565-1-git-send-email-plagnioj@jcrosoft.com> X-Ovh-Tracer-Id: 15058066830971939837 X-Ovh-Remote: 213.251.161.87 (ns32433.ovh.net) X-Ovh-Local: 213.186.33.20 (ns0.ovh.net) X-OVH-SPAMSTATE: OK X-OVH-SPAMSCORE: -100 X-OVH-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeeifedruddtucetufdoteggodetrfcurfhrohhfihhlvgemucfqggfjnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd X-Spam-Check: DONE|U 0.5/N X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeeifedruddtucetufdoteggodetrfcurfhrohhfihhlvgemucfqggfjnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org get display timings from device tree Use videomode helpers to get display timings and configurations from device tree Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Cc: linux-fbdev@vger.kernel.org Cc: Nicolas Ferre Cc: Andrew Morton --- .../devicetree/bindings/video/atmel,lcdc.txt | 75 ++++++ drivers/video/Kconfig | 2 + drivers/video/atmel_lcdfb.c | 244 +++++++++++++++++--- 3 files changed, 289 insertions(+), 32 deletions(-) create mode 100644 Documentation/devicetree/bindings/video/atmel,lcdc.txt diff --git a/Documentation/devicetree/bindings/video/atmel,lcdc.txt b/Documentation/devicetree/bindings/video/atmel,lcdc.txt new file mode 100644 index 0000000..1ec175e --- /dev/null +++ b/Documentation/devicetree/bindings/video/atmel,lcdc.txt @@ -0,0 +1,75 @@ +Atmel LCDC Framebuffer +----------------------------------------------------- + +Required properties: +- compatible : + "atmel,at91sam9261-lcdc" , + "atmel,at91sam9263-lcdc" , + "atmel,at91sam9g10-lcdc" , + "atmel,at91sam9g45-lcdc" , + "atmel,at91sam9g45es-lcdc" , + "atmel,at91sam9rl-lcdc" , + "atmel,at32ap-lcdc" +- reg : Should contain 1 register ranges(address and length) +- interrupts : framebuffer controller interrupt +- display: a phandle pointing to the display node + +Required nodes: +- display: a display node is required to initialize the lcd panel + This should be in the board dts. +- default-mode: a videomode within the display with timing parameters + as specified below. + +Example: + + fb0: fb@0x00500000 { + compatible = "atmel,at91sam9g45-lcdc"; + reg = <0x00500000 0x1000>; + interrupts = <23 3 0>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_fb>; + display = <&display0>; + status = "okay"; + #address-cells = <1>; + #size-cells = <1>; + + }; + +Atmel LCDC Display +----------------------------------------------------- +Required properties (as per of_videomode_helper): + + - atmel,dmacon: dma controler configuration + - atmel,lcdcon2: lcd controler configuration + - atmel,guard-time: lcd guard time (Delay in frame periods) + - bits-per-pixel: lcd panel bit-depth. + +Optional properties (as per of_videomode_helper): + - atmel,lcdcon-backlight: enable backlight + - atmel,lcd-wiring-mode: lcd wiring mode "RGB" or "BRG" + - atmel,power-control-gpio: gpio to power on or off the LCD (as many as needed) + +Example: + display0: display { + bits-per-pixel = <32>; + atmel,lcdcon-backlight; + atmel,dmacon = <0x1>; + atmel,lcdcon2 = <0x80008002>; + atmel,guard-time = <9>; + atmel,lcd-wiring-mode = <1>; + + display-timings { + native-mode = <&timing0>; + timing0: timing0 { + clock-frequency = <9000000>; + hactive = <480>; + vactive = <272>; + hback-porch = <1>; + hfront-porch = <1>; + vback-porch = <40>; + vfront-porch = <1>; + hsync-len = <45>; + vsync-len = <1>; + }; + }; + }; diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 4c1546f..0687482 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -1018,6 +1018,8 @@ config FB_ATMEL select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT + select FB_MODE_HELPERS + select OF_VIDEOMODE help This enables support for the AT91/AT32 LCD Controller. diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c index f67e226..4a31570 100644 --- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c @@ -20,7 +20,11 @@ #include #include #include +#include +#include +#include #include