From patchwork Fri Nov 29 19:05:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11267557 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5108B6C1 for ; Fri, 29 Nov 2019 19:06:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 23225217D6 for ; Fri, 29 Nov 2019 19:06:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="DLyoqFRu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727259AbfK2TGX (ORCPT ); Fri, 29 Nov 2019 14:06:23 -0500 Received: from mail-pl1-f195.google.com ([209.85.214.195]:35487 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727237AbfK2TGW (ORCPT ); Fri, 29 Nov 2019 14:06:22 -0500 Received: by mail-pl1-f195.google.com with SMTP id s10so13220584plp.2 for ; Fri, 29 Nov 2019 11:06:21 -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; bh=fdZGEeUOCOwh+tX8/OT2YL+SDadPhoIQm08hQY5lXJA=; b=DLyoqFRu3dgnqsh/DNd7rk+3gNqmfCTN678B52BIcIHxdPk8dW0Ri8BJeIulTGzgo5 Pt7qDTHCAtvjZ4+jheGnLPVjzdEzVD0S2tSzCTSayQoefdlg8VHZPHEiJ74dNttre7YH cxcaZapqq7rnMchfs13eqEX3k+IykwZk6Tgb1comLduiImT8ItmpiRpMpVX7vRf14ppR F4YpTSqZIdn7rIoqdp4zBeZJDTGa6FGXSLhQhGHr1fQNPSAjASF0AbZL/D0Og3bGEYai jvMIEfFfhnjirODlfsHBbS35p/6Dx00v7GNIBHoNVwUpOM0ieqMIXA3JB3oKTPwP7TE6 5N4g== 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; bh=fdZGEeUOCOwh+tX8/OT2YL+SDadPhoIQm08hQY5lXJA=; b=ijKVlC6WjMvwpxYycycWrHN5ILZNosdVAULH80TiK8XasKm+z78ww1tMbofamVXFiF sdgh1KUmYX7RCYGFXJ/wh6NCn62Y/bEMHgSF5EK6LI01hzlZeL6Zyff8YB4i4lmE97Bb /VPyI0875JdCa+015mJQiLpF9euWKQEUdmqeYgO7opspbvC3zJePbcF/2BJdID/5TUGe rm8eU1gg7eBSeJw4lhe5eosQwUqPOhZdS04pClj+2VvVlwKjU4peDHKjFYF/arcoXfxg R0qHXoJ3EM3LY583KYaFaqPEjGoZaSrHsGwrGqRx0VFBcX+cy4hWxVjCCJjsDvt1iQPD 8Xpg== X-Gm-Message-State: APjAAAXY5j9oltUztciUF9Nt9TV+w8UFy9zvwEihd43BEpi8+dPzciKX EA0Ow/AYtgb+xnqlmSxbPVN5 X-Google-Smtp-Source: APXvYqwa2yD9PgxAesmGNDxQ4uHt51wtgQZHPOeScSZhP4oPWUUXfmBV8Y+mzTIvkQKxIEu5czflog== X-Received: by 2002:a17:902:8a8a:: with SMTP id p10mr15855387plo.283.1575054380525; Fri, 29 Nov 2019 11:06:20 -0800 (PST) Received: from localhost.localdomain ([2409:4072:638d:cc55:d006:f721:cde2:1059]) by smtp.gmail.com with ESMTPSA id h9sm25159974pgk.84.2019.11.29.11.06.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Nov 2019 11:06:19 -0800 (PST) From: Manivannan Sadhasivam To: mchehab@kernel.org, sakari.ailus@iki.fi Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, c.barrett@framos.com, a.brela@framos.com, peter.griffin@linaro.org, Manivannan Sadhasivam Subject: [PATCH 5/5] media: i2c: imx290: Add configurable link frequency and pixel rate Date: Sat, 30 Nov 2019 00:35:41 +0530 Message-Id: <20191129190541.30315-6-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191129190541.30315-1-manivannan.sadhasivam@linaro.org> References: <20191129190541.30315-1-manivannan.sadhasivam@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org IMX290 operates with multiple link frequency and pixel rate combinations. The initial driver used a single setting for both but since we now have the lane count support in place, let's add configurable link frequency and pixel rate. Signed-off-by: Manivannan Sadhasivam --- drivers/media/i2c/imx290.c | 155 +++++++++++++++++++++---------------- 1 file changed, 89 insertions(+), 66 deletions(-) diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c index f26c4a0ee0a0..d794ade26609 100644 --- a/drivers/media/i2c/imx290.c +++ b/drivers/media/i2c/imx290.c @@ -45,8 +45,6 @@ #define IMX290_HMAX_2_720 0x19C8 #define IMX290_HMAX_4_720 0x0CE4 -#define IMX290_DEFAULT_LINK_FREQ 445500000 - static const char * const imx290_supply_name[] = { "vdda", "vddd", @@ -63,8 +61,6 @@ struct imx290_regval { struct imx290_mode { u32 width; u32 height; - u32 pixel_rate; - u32 link_freq_index; const struct imx290_regval *data; u32 data_size; @@ -281,7 +277,10 @@ static const struct imx290_regval imx290_12bit_settings[] = { /* supported link frequencies */ static const s64 imx290_link_freq[] = { - IMX290_DEFAULT_LINK_FREQ, + 891000000, /* 1920x1080 - 2 lane */ + 445500000, /* 1920x1080 - 4 lane */ + 594000000, /* 1280x720 - 2 lane */ + 297000000, /* 1280x720 - 4 lane */ }; /* Mode configs */ @@ -291,16 +290,12 @@ static const struct imx290_mode imx290_modes[] = { .height = 1080, .data = imx290_1080p_settings, .data_size = ARRAY_SIZE(imx290_1080p_settings), - .pixel_rate = 178200000, - .link_freq_index = 0, }, { .width = 1280, .height = 720, .data = imx290_720p_settings, .data_size = ARRAY_SIZE(imx290_720p_settings), - .pixel_rate = 178200000, - .link_freq_index = 0, }, }; @@ -509,6 +504,73 @@ static int imx290_get_fmt(struct v4l2_subdev *sd, return 0; } +static s64 imx290_get_link_freq_index(struct imx290 *imx290) +{ + const struct imx290_mode *cur_mode = imx290->current_mode; + u8 index; + + if (cur_mode->width == 1920) + index = imx290->nlanes / 4; + else + index = (imx290->nlanes / 4) + 2; + + return index; +} + +static s64 imx290_get_link_freq(struct imx290 *imx290) +{ + u8 index = imx290_get_link_freq_index(imx290); + + return imx290_link_freq[index]; +} + +static u64 imx290_calc_pixel_rate(struct imx290 *imx290) +{ + s64 link_freq = imx290_get_link_freq(imx290); + u8 nlanes = imx290->nlanes; + + /* pixel rate = link_freq * 2 * nr_of_lanes / bits_per_sample */ + return (link_freq * 2 * nlanes / imx290->bpp); +} + +static int imx290_write_current_format(struct imx290 *imx290, + struct v4l2_mbus_framefmt *format) +{ + int ret; + + switch (format->code) { + case MEDIA_BUS_FMT_SRGGB10_1X10: + ret = imx290_set_register_array(imx290, imx290_10bit_settings, + ARRAY_SIZE( + imx290_10bit_settings)); + if (ret < 0) { + dev_err(imx290->dev, "Could not set format registers\n"); + return ret; + } + + imx290->bpp = 10; + + break; + case MEDIA_BUS_FMT_SRGGB12_1X12: + ret = imx290_set_register_array(imx290, imx290_12bit_settings, + ARRAY_SIZE( + imx290_12bit_settings)); + if (ret < 0) { + dev_err(imx290->dev, "Could not set format registers\n"); + return ret; + } + + imx290->bpp = 12; + + break; + default: + dev_err(imx290->dev, "Unknown pixel format\n"); + return -EINVAL; + } + + return 0; +} + static int imx290_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) @@ -517,6 +579,7 @@ static int imx290_set_fmt(struct v4l2_subdev *sd, const struct imx290_mode *mode; struct v4l2_mbus_framefmt *format; unsigned int i; + int ret = 0; mutex_lock(&imx290->lock); @@ -542,17 +605,27 @@ static int imx290_set_fmt(struct v4l2_subdev *sd, format = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); } else { format = &imx290->current_format; - __v4l2_ctrl_s_ctrl(imx290->link_freq, mode->link_freq_index); - __v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate, mode->pixel_rate); - imx290->current_mode = mode; + + /* Set current frame format */ + ret = imx290_write_current_format(imx290, &fmt->format); + if (ret < 0) { + dev_err(imx290->dev, "Could not set frame format\n"); + goto err_out; + } + + __v4l2_ctrl_s_ctrl(imx290->link_freq, + imx290_get_link_freq_index(imx290)); + __v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate, + imx290_calc_pixel_rate(imx290)); } *format = fmt->format; +err_out: mutex_unlock(&imx290->lock); - return 0; + return ret; } static int imx290_entity_init_cfg(struct v4l2_subdev *subdev, @@ -569,44 +642,6 @@ static int imx290_entity_init_cfg(struct v4l2_subdev *subdev, return 0; } -static int imx290_write_current_format(struct imx290 *imx290, - struct v4l2_mbus_framefmt *format) -{ - int ret; - - switch (format->code) { - case MEDIA_BUS_FMT_SRGGB10_1X10: - ret = imx290_set_register_array(imx290, imx290_10bit_settings, - ARRAY_SIZE( - imx290_10bit_settings)); - if (ret < 0) { - dev_err(imx290->dev, "Could not set format registers\n"); - return ret; - } - - imx290->bpp = 10; - - break; - case MEDIA_BUS_FMT_SRGGB12_1X12: - ret = imx290_set_register_array(imx290, imx290_12bit_settings, - ARRAY_SIZE( - imx290_12bit_settings)); - if (ret < 0) { - dev_err(imx290->dev, "Could not set format registers\n"); - return ret; - } - - imx290->bpp = 12; - - break; - default: - dev_err(imx290->dev, "Unknown pixel format\n"); - return -EINVAL; - } - - return 0; -} - static int imx290_set_hmax(struct imx290 *imx290, u32 val) { int ret; @@ -640,13 +675,6 @@ static int imx290_start_streaming(struct imx290 *imx290) return ret; } - /* Set current frame format */ - ret = imx290_write_current_format(imx290, &imx290->current_format); - if (ret < 0) { - dev_err(imx290->dev, "Could not set frame format\n"); - return ret; - } - /* Apply default values of current mode */ ret = imx290_set_register_array(imx290, imx290->current_mode->data, imx290->current_mode->data_size); @@ -901,12 +929,6 @@ static int imx290_probe(struct i2c_client *client) goto free_err; } - if (imx290->ep.link_frequencies[0] != IMX290_DEFAULT_LINK_FREQ) { - dev_err(dev, "Unsupported link frequency\n"); - ret = -EINVAL; - goto free_err; - } - /* Only CSI2 is supported for now */ if (imx290->ep.bus_type != V4L2_MBUS_CSI2_DPHY) { dev_err(dev, "Unsupported bus type, should be CSI2\n"); @@ -973,14 +995,15 @@ static int imx290_probe(struct i2c_client *client) &imx290_ctrl_ops, V4L2_CID_LINK_FREQ, ARRAY_SIZE(imx290_link_freq) - 1, - 0, imx290_link_freq); + (imx290->nlanes / 4), + imx290_link_freq); if (imx290->link_freq) imx290->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; imx290->pixel_rate = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, - imx290_modes[0].pixel_rate); + imx290_calc_pixel_rate(imx290)); v4l2_ctrl_new_std_menu_items(&imx290->ctrls, &imx290_ctrl_ops, V4L2_CID_TEST_PATTERN,