From patchwork Tue Oct 8 08:20:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Shiyan X-Patchwork-Id: 13825961 Received: from mail-lj1-f178.google.com (mail-lj1-f178.google.com [209.85.208.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8AF8F17BEC8 for ; Tue, 8 Oct 2024 08:21:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728375675; cv=none; b=LTcoB07SGOxa8CTwsIpfGvcAzJAbwugzSnJfiSAgsAnWM0UhwmAbB9sDWtx3KNjjdleojxNJ7vSyVgTzRYYjygdmCNJE8XTKcqUNHqPj9KGSC7i2ZOl0X1JO6uYI1MRKXUwvj2p4I4YZ+mvnNzCcTkR+1ZHpyCQcPsLcuhyh5dY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728375675; c=relaxed/simple; bh=ukKAPkz119HubdIQtpNpkPIOz5mdopXWIAu9TIMPQ6E=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=AKogXhW2yBzWoDZ2OvrXC/neoa89wXUIUXT9dfNGDE8Lzmm0rdi77oItcHSoV1jRjIFJBGxWfumqeKnvMx8eyjCJ8yGhFJKUnuOrdeVHOHJdpFMFrGgVx8EpdnqJ7iLrT7DNp7G/uEiLiklB0KnIcTxKFmk0mHK5gmcOmnUfmws= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Yi0loRjH; arc=none smtp.client-ip=209.85.208.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Yi0loRjH" Received: by mail-lj1-f178.google.com with SMTP id 38308e7fff4ca-2fad6de2590so78691831fa.0 for ; Tue, 08 Oct 2024 01:21:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728375671; x=1728980471; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=thUQDlHD8CjBtubIuNxEsUDz+R6ECfeexNMZdbpZUHM=; b=Yi0loRjHh9jVTik0XLCnNcrCB7bHy1JbxZ72IFUHL2Z6+f0hVl+79cwse38BBJR6rV mL5XQ5l1OLSAIlRPT4aXdmvUgcpkgNf0G/97OJGFf1Ab9yegtNb4NfnMquniPrFxQiMe X8oJSHmZiJobjRQWasWWXvD9ME2LkrKhIcpNMR4am+f7X/lnrnzFcjRewZO3JWs05ZR7 Z4qt1FisESteASjEvoqjpwmymd4swK5Yk8/DNIBwe6z38aBLGjXJXd/Zo3zKnQ9ix0lr Fx7RpnEGuwadNGxh3svk292dVBHSowNmVA7ZpBkWZTtwwFox0qmKUhikjlQYh3hDRbPo cYCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728375671; x=1728980471; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=thUQDlHD8CjBtubIuNxEsUDz+R6ECfeexNMZdbpZUHM=; b=bOtvB8yqZRUz/y7DGICOFRUhd7ouSQTI9N7dSYyvwJXh0MiKVKy2P2M63xnXLB1/nL rvU8J/4QHDoJm4HQvgBeKTEHXk5SOph/jQ/RIXD1gb1lPwXaj7Aq1Z3iN1V5PiSf4twC 96x2bfb3JY7OqN7pfOPZLEuQbqOEGefvCd0eQAO2ixiCixZKyGn2BZfbNbg6gf3Z53zc jERo7ARd/MEIHVA55c4Hdhq5L07viwd0DWInr4fnfhdVnkY6ONeWcWelUyjyk9aoRlGH l5fm8i88THZBnnkhzr4xtRXvHy1ZmLGd7ABcF0Eo3CGMhbGreaL/LL6P73xoGgfbu45Q 48AA== X-Gm-Message-State: AOJu0YzZ40uiT3r19sy3N6VG6NWRZp9TZtl5mQcjldz7gomFGUsOg4Zv YM5FGOpAPMZu0xWg/9KB6JENiaTq2tubPM8M9pthN3oUaBJ+g9fFfM127nzx X-Google-Smtp-Source: AGHT+IFqGiQmVETDXIeFxWVy6wXlOWD+rb768oK+jDD3w8CnGLJwl59alq0MEKHNMWeZj6DjnXHSGw== X-Received: by 2002:a2e:be06:0:b0:2f0:1a95:7106 with SMTP id 38308e7fff4ca-2faf3d7921bmr91145151fa.39.1728375670906; Tue, 08 Oct 2024 01:21:10 -0700 (PDT) Received: from localhost.localdomain ([188.243.23.53]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-2faf9ac440asm11022941fa.46.2024.10.08.01.21.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Oct 2024 01:21:10 -0700 (PDT) From: Alexander Shiyan To: linux-media@vger.kernel.org Cc: Tomi Valkeinen , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alexander Shiyan Subject: [PATCH v2 2/3] media: i2c: ds90ub960: Add DS90UB954 support Date: Tue, 8 Oct 2024 11:20:48 +0300 Message-Id: <20241008082049.18483-2-eagle.alexander923@gmail.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20241008082049.18483-1-eagle.alexander923@gmail.com> References: <20241008082049.18483-1-eagle.alexander923@gmail.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add support for TI DS90UB954 FPD-Link III Deserializer. --- v2: Avoid potentially infinite loop when checking chip frequency. Move chip specific checks to appropriate functions. Signed-off-by: Alexander Shiyan --- drivers/media/i2c/Kconfig | 4 +-- drivers/media/i2c/ds90ub960.c | 58 ++++++++++++++++++++++++++++++++--- 2 files changed, 56 insertions(+), 6 deletions(-) diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 8ba096b8ebca..91fd2c3eb8bb 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -1604,8 +1604,8 @@ config VIDEO_DS90UB960 select V4L2_FWNODE select VIDEO_V4L2_SUBDEV_API help - Device driver for the Texas Instruments DS90UB960 - FPD-Link III Deserializer and DS90UB9702 FPD-Link IV Deserializer. + Device driver for the Texas Instruments DS90UB954/DS90UB960 + FPD-Link III Deserializers and DS90UB9702 FPD-Link IV Deserializer. config VIDEO_MAX96714 tristate "Maxim MAX96714 GMSL2 deserializer" diff --git a/drivers/media/i2c/ds90ub960.c b/drivers/media/i2c/ds90ub960.c index d71920677a0a..78f228c62d8a 100644 --- a/drivers/media/i2c/ds90ub960.c +++ b/drivers/media/i2c/ds90ub960.c @@ -403,6 +403,7 @@ #define UB960_NUM_EQ_LEVELS (UB960_MAX_EQ_LEVEL - UB960_MIN_EQ_LEVEL + 1) enum chip_type { + UB954, UB960, UB9702, }; @@ -815,6 +816,10 @@ static int ub960_txport_select(struct ub960_data *priv, u8 nport) lockdep_assert_held(&priv->reg_lock); + /* TX port registers is shared for UB954 */ + if (priv->hw_data->chip_type == UB954) + return 0; + if (priv->reg_current.txport == nport) return 0; @@ -1157,10 +1162,18 @@ static int ub960_parse_dt_txport(struct ub960_data *priv, priv->tx_link_freq[0] = vep.link_frequencies[0]; priv->tx_data_rate = priv->tx_link_freq[0] * 2; - if (priv->tx_data_rate != MHZ(1600) && - priv->tx_data_rate != MHZ(1200) && - priv->tx_data_rate != MHZ(800) && - priv->tx_data_rate != MHZ(400)) { + switch (priv->tx_data_rate) { + case MHZ(1600): + case MHZ(800): + case MHZ(400): + break; + case MHZ(1200): + /* UB954 does not support 1.2 Gbps */ + if ((priv->hw_data->chip_type == UB960) || + (priv->hw_data->chip_type == UB9702)) + break; + fallthrough; + default: dev_err(dev, "tx%u: invalid 'link-frequencies' value\n", nport); ret = -EINVAL; goto err_free_vep; @@ -1311,6 +1324,10 @@ static void ub960_rxport_set_strobe_pos(struct ub960_data *priv, { u8 clk_delay, data_delay; + /* FIXME: After writing to this area the UB954 chip no longer responds */ + if (priv->hw_data->chip_type == UB954) + return; + clk_delay = UB960_IR_RX_ANA_STROBE_SET_CLK_NO_EXTRA_DELAY; data_delay = UB960_IR_RX_ANA_STROBE_SET_DATA_NO_EXTRA_DELAY; @@ -3853,6 +3870,9 @@ static int ub960_enable_core_hw(struct ub960_data *priv) } switch (priv->hw_data->chip_type) { + case UB954: + model = "UB954"; + break; case UB960: model = "UB960"; break; @@ -3874,6 +3894,27 @@ static int ub960_enable_core_hw(struct ub960_data *priv) if (ret) goto err_pd_gpio; + if (priv->hw_data->chip_type == UB954) { + /* From DS90UB954-Q1 datasheet: + * "REFCLK_FREQ measurement is not synchronized. Value in this + * register should read twice and only considered valid if + * REFCLK_FREQ is unchanged between reads." + */ + unsigned long timeout = jiffies + msecs_to_jiffies(100); + + do { + u8 refclk_new; + + ret = ub960_read(priv, UB960_XR_REFCLK_FREQ, &refclk_new); + if (ret) + goto err_pd_gpio; + + if (refclk_new == refclk_freq) + break; + refclk_freq = refclk_new; + } while (time_before(jiffies, timeout)); + } + dev_dbg(dev, "refclk valid %u freq %u MHz (clk fw freq %lu MHz)\n", !!(dev_sts & BIT(4)), refclk_freq, clk_get_rate(priv->refclk) / 1000000); @@ -4045,6 +4086,13 @@ static void ub960_remove(struct i2c_client *client) mutex_destroy(&priv->reg_lock); } +static const struct ub960_hw_data ds90ub954_hw = { + .chip_type = UB954, + .chip_family = FAMILY_FPD3, + .num_rxports = 2, + .num_txports = 1, +}; + static const struct ub960_hw_data ds90ub960_hw = { .chip_type = UB960, .chip_family = FAMILY_FPD3, @@ -4060,6 +4108,7 @@ static const struct ub960_hw_data ds90ub9702_hw = { }; static const struct i2c_device_id ub960_id[] = { + { "ds90ub954-q1", (kernel_ulong_t)&ds90ub954_hw }, { "ds90ub960-q1", (kernel_ulong_t)&ds90ub960_hw }, { "ds90ub9702-q1", (kernel_ulong_t)&ds90ub9702_hw }, {} @@ -4067,6 +4116,7 @@ static const struct i2c_device_id ub960_id[] = { MODULE_DEVICE_TABLE(i2c, ub960_id); static const struct of_device_id ub960_dt_ids[] = { + { .compatible = "ti,ds90ub954-q1", .data = &ds90ub954_hw }, { .compatible = "ti,ds90ub960-q1", .data = &ds90ub960_hw }, { .compatible = "ti,ds90ub9702-q1", .data = &ds90ub9702_hw }, {}