From patchwork Mon Jul 18 21:10:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nick Dyer X-Patchwork-Id: 9235361 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7D8486075D for ; Mon, 18 Jul 2016 21:22:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6DF531FE95 for ; Mon, 18 Jul 2016 21:22:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 62E3E20649; Mon, 18 Jul 2016 21:22:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 06F3F1FE95 for ; Mon, 18 Jul 2016 21:22:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751933AbcGRVSv (ORCPT ); Mon, 18 Jul 2016 17:18:51 -0400 Received: from avasout05.plus.net ([84.93.230.250]:53237 "EHLO avasout05.plus.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751719AbcGRVS1 (ORCPT ); Mon, 18 Jul 2016 17:18:27 -0400 Received: from lava ([80.229.148.18]) by avasout05 with smtp id LMAh1t0060Q3Geg01MAigq; Mon, 18 Jul 2016 22:10:47 +0100 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.2 cv=Ld9+0XXi c=1 sm=1 tr=0 a=o7Djd4SkmPXITDn8qH+ssQ==:117 a=o7Djd4SkmPXITDn8qH+ssQ==:17 a=cAmyUtKerLwA:10 a=beXlt2xKAAAA:8 a=t8CS8OO9K06ylVjn008A:9 a=0bXxn9q0MV6snEgNplNhOjQmxlI=:19 a=gcY2M4Ci8LIz02MwfSIM:22 Received: from nick by lava with local (Exim 4.76) (envelope-from ) id 1bPFoG-0006Ps-DK; Mon, 18 Jul 2016 22:10:40 +0100 From: Nick Dyer To: Dmitry Torokhov , Hans Verkuil Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Benjamin Tissoires , Benson Leung , Javier Martinez Canillas , Chris Healy , Henrik Rydberg , Andrew Duggan , James Chen , Dudley Du , Andrew de los Reyes , sheckylin@chromium.org, Peter Hutterer , Florian Echtler , mchehab@osg.samsung.com, Nick Dyer Subject: [PATCH v8 08/10] Input: atmel_mxt_ts - add support for reference data Date: Mon, 18 Jul 2016 22:10:36 +0100 Message-Id: <1468876238-24599-9-git-send-email-nick@shmanahar.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1468876238-24599-1-git-send-email-nick@shmanahar.org> References: <1468876238-24599-1-git-send-email-nick@shmanahar.org> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There are different datatypes available from a maXTouch chip. Add support to retrieve reference data as well. Signed-off-by: Nick Dyer --- drivers/input/touchscreen/atmel_mxt_ts.c | 57 ++++++++++++++++++++++++++---- 1 file changed, 51 insertions(+), 6 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 584198e..beede8f 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -135,6 +135,7 @@ struct t9_range { /* MXT_DEBUG_DIAGNOSTIC_T37 */ #define MXT_DIAGNOSTIC_PAGEUP 0x01 #define MXT_DIAGNOSTIC_DELTAS 0x10 +#define MXT_DIAGNOSTIC_REFS 0x11 #define MXT_DIAGNOSTIC_SIZE 128 #define MXT_FAMILY_1386 160 @@ -249,6 +250,12 @@ struct mxt_dbg { int input; }; +enum v4l_dbg_inputs { + MXT_V4L_INPUT_DELTAS, + MXT_V4L_INPUT_REFS, + MXT_V4L_INPUT_MAX, +}; + static const struct v4l2_file_operations mxt_video_fops = { .owner = THIS_MODULE, .open = v4l2_fh_open, @@ -2273,6 +2280,7 @@ static void mxt_buffer_queue(struct vb2_buffer *vb) struct mxt_data *data = vb2_get_drv_priv(vb->vb2_queue); u16 *ptr; int ret; + u8 mode; ptr = vb2_plane_vaddr(vb, 0); if (!ptr) { @@ -2280,7 +2288,18 @@ static void mxt_buffer_queue(struct vb2_buffer *vb) goto fault; } - ret = mxt_read_diagnostic_debug(data, MXT_DIAGNOSTIC_DELTAS, ptr); + switch (data->dbg.input) { + case MXT_V4L_INPUT_DELTAS: + default: + mode = MXT_DIAGNOSTIC_DELTAS; + break; + + case MXT_V4L_INPUT_REFS: + mode = MXT_DIAGNOSTIC_REFS; + break; + } + + ret = mxt_read_diagnostic_debug(data, mode, ptr); if (ret) goto fault; @@ -2325,11 +2344,21 @@ static int mxt_vidioc_querycap(struct file *file, void *priv, static int mxt_vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i) { - if (i->index > 0) + if (i->index >= MXT_V4L_INPUT_MAX) return -EINVAL; i->type = V4L2_INPUT_TYPE_TOUCH; - strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); + + switch (i->index) { + case MXT_V4L_INPUT_REFS: + strlcpy(i->name, "Mutual Capacitance References", + sizeof(i->name)); + break; + case MXT_V4L_INPUT_DELTAS: + strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); + break; + } + return 0; } @@ -2337,12 +2366,16 @@ static int mxt_set_input(struct mxt_data *data, unsigned int i) { struct v4l2_pix_format *f = &data->dbg.format; - if (i > 0) + if (i >= MXT_V4L_INPUT_MAX) return -EINVAL; + if (i == MXT_V4L_INPUT_DELTAS) + f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; + else + f->pixelformat = V4L2_TCH_FMT_TU16; + f->width = data->xy_switch ? data->ysize : data->xsize; f->height = data->xy_switch ? data->xsize : data->ysize; - f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; f->field = V4L2_FIELD_NONE; f->colorspace = V4L2_COLORSPACE_RAW; f->bytesperline = f->width * sizeof(u16); @@ -2383,7 +2416,19 @@ static int mxt_vidioc_enum_fmt(struct file *file, void *priv, if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; - fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; + switch (fmt->index) { + case 0: + fmt->pixelformat = V4L2_TCH_FMT_TU16; + break; + + case 1: + fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; + break; + + default: + return -EINVAL; + } + return 0; }