From patchwork Wed Jun 22 22:08:28 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nick Dyer X-Patchwork-Id: 9193821 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 B02886075C for ; Wed, 22 Jun 2016 22:10:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9B09320499 for ; Wed, 22 Jun 2016 22:10:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8E3AA2841D; Wed, 22 Jun 2016 22:10:11 +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 0C6A720499 for ; Wed, 22 Jun 2016 22:10:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751432AbcFVWIr (ORCPT ); Wed, 22 Jun 2016 18:08:47 -0400 Received: from kdh-gw.itdev.co.uk ([89.21.227.133]:17027 "EHLO hermes.kdh.itdev.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751255AbcFVWIq (ORCPT ); Wed, 22 Jun 2016 18:08:46 -0400 Received: from localhost.localdomain (unknown [80.229.148.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by hermes.kdh.itdev.co.uk (Postfix) with ESMTPSA id 0576B7F3CE; Wed, 22 Jun 2016 23:08:42 +0100 (BST) 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 , Alan Bowens , 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@itdev.co.uk Subject: [PATCH v5 4/9] Input: atmel_mxt_ts - read touchscreen size Date: Wed, 22 Jun 2016 23:08:28 +0100 Message-Id: <1466633313-15339-5-git-send-email-nick.dyer@itdev.co.uk> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1466633313-15339-1-git-send-email-nick.dyer@itdev.co.uk> References: <1466633313-15339-1-git-send-email-nick.dyer@itdev.co.uk> 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 The touchscreen may have a margin where not all the matrix is used. Read the parameters from T9 and T100 and take account of the difference. Note: this does not read the XORIGIN/YORIGIN fields so it assumes that the touchscreen starts at (0,0) Signed-off-by: Nick Dyer --- drivers/input/touchscreen/atmel_mxt_ts.c | 42 +++++++++++++++++++++++++++----- 1 file changed, 36 insertions(+), 6 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 7780d38..8ef61d7 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -103,6 +103,8 @@ struct t7_config { /* MXT_TOUCH_MULTI_T9 field */ #define MXT_T9_CTRL 0 +#define MXT_T9_XSIZE 3 +#define MXT_T9_YSIZE 4 #define MXT_T9_ORIENT 9 #define MXT_T9_RANGE 18 @@ -150,7 +152,9 @@ struct t37_debug { #define MXT_T100_CTRL 0 #define MXT_T100_CFG1 1 #define MXT_T100_TCHAUX 3 +#define MXT_T100_XSIZE 9 #define MXT_T100_XRANGE 13 +#define MXT_T100_YSIZE 20 #define MXT_T100_YRANGE 24 #define MXT_T100_CFG_SWITCHXY BIT(5) @@ -259,6 +263,8 @@ struct mxt_data { unsigned int max_x; unsigned int max_y; bool xy_switch; + u8 xsize; + u8 ysize; bool in_bootloader; u16 mem_size; u8 t100_aux_ampl; @@ -1714,6 +1720,18 @@ static int mxt_read_t9_resolution(struct mxt_data *data) return -EINVAL; error = __mxt_read_reg(client, + object->start_address + MXT_T9_XSIZE, + sizeof(data->xsize), &data->xsize); + if (error) + return error; + + error = __mxt_read_reg(client, + object->start_address + MXT_T9_YSIZE, + sizeof(data->ysize), &data->ysize); + if (error) + return error; + + error = __mxt_read_reg(client, object->start_address + MXT_T9_RANGE, sizeof(range), &range); if (error) @@ -1763,6 +1781,18 @@ static int mxt_read_t100_config(struct mxt_data *data) data->max_y = get_unaligned_le16(&range_y); + error = __mxt_read_reg(client, + object->start_address + MXT_T100_XSIZE, + sizeof(data->xsize), &data->xsize); + if (error) + return error; + + error = __mxt_read_reg(client, + object->start_address + MXT_T100_YSIZE, + sizeof(data->ysize), &data->ysize); + if (error) + return error; + /* read orientation config */ error = __mxt_read_reg(client, object->start_address + MXT_T100_CFG1, @@ -2121,7 +2151,7 @@ static int mxt_convert_debug_pages(struct mxt_data *data, u16 *outbuf) outbuf[i] = mxt_get_debug_value(data, x, y); /* Next value */ - if (++x >= data->info.matrix_xsize) { + if (++x >= data->xsize) { x = 0; y++; } @@ -2276,8 +2306,8 @@ static int mxt_set_input(struct mxt_data *data, unsigned int i) if (i > 0) return -EINVAL; - f->width = data->info.matrix_xsize; - f->height = data->info.matrix_ysize; + f->width = data->xsize; + f->height = data->ysize; f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; f->field = V4L2_FIELD_NONE; f->colorspace = V4L2_COLORSPACE_RAW; @@ -2392,9 +2422,9 @@ static void mxt_debug_init(struct mxt_data *data) dbg->t37_address = object->start_address; /* Calculate size of data and allocate buffer */ - dbg->t37_nodes = data->info.matrix_xsize * data->info.matrix_ysize; - dbg->t37_pages = DIV_ROUND_UP(dbg->t37_nodes * sizeof(u16), - sizeof(dbg->t37_buf->data)); + dbg->t37_nodes = data->xsize * data->ysize; + dbg->t37_pages = DIV_ROUND_UP(data->xsize * data->info.matrix_ysize * + sizeof(u16), sizeof(dbg->t37_buf->data)); dbg->t37_buf = devm_kmalloc_array(&data->client->dev, dbg->t37_pages, sizeof(struct t37_debug), GFP_KERNEL);