From patchwork Sat Dec 2 07:54:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 749561 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=atomide.com header.i=@atomide.com header.b="UojeGNFb" Received: from mail5.25mail.st (mail5.25mail.st [74.50.62.9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 41CF6194 for ; Sat, 2 Dec 2023 00:04:26 -0800 (PST) Received: from localhost (91-158-86-216.elisa-laajakaista.fi [91.158.86.216]) by mail5.25mail.st (Postfix) with ESMTPSA id 6376260406; Sat, 2 Dec 2023 08:03:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=atomide.com; s=25mailst; t=1701504265; bh=i5hlFOUrpipsKtqPCP9/VPweATC36VuKIXOSxW9v2SU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UojeGNFbTAsiDIuJzBBUldx5ei8dPsxKU9ILNfIOVlTRSa04vwswLq2nBw272uT8r N7U0yKFzOrNhkwqB89/Hjz57Owff2TRNomWSyWxU11f2sg1EwdVwO0cT7xd2GadUeD ACneEOM96ilEKdgBu3PRFkbHuLc8Yc3IZrwCXLwofLfng/Ljp/LjrPp9Mpy6wASiJD yYfZVlf52tQRLN9tjtdYaqktFfTcUR27amo7Pmk31In2vHS5XWEXTHqmziRIZIGwHi yALV/+a5BHTo+SJPhrqHM2I9RObP6cNWe6zW/pJIDKQ1p2lGAzh4I+3UwtBnBLOc3h GjwUO8JXQIgVA== From: Tony Lindgren To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Simha BN , Sam Ravnborg Cc: Carl Philipp Klemm , Ivaylo Dimitrov , Merlijn Wajer , Pavel Machek , Sebastian Reichel , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org Subject: [PATCH v2 09/10] drm/bridge: tc358775: Add support for tc358765 Date: Sat, 2 Dec 2023 09:54:48 +0200 Message-ID: <20231202075514.44474-10-tony@atomide.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231202075514.44474-1-tony@atomide.com> References: <20231202075514.44474-1-tony@atomide.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The tc358775 bridge is pin compatible with earlier tc358765 according to the tc358774xbg_datasheet_en_20190118.pdf documentation. Compared to the tc358765, the tc358775 supports a STBY GPIO and higher data rates. The tc358765 has a register bit for video event mode vs video pulse mode. We must set it to video event mode for the LCD output to work, and on the tc358775, this bit no longer exists. Looks like the registers seem to match otherwise based on a quick glance comparing the defines to the earlier Android kernel tc358765 driver. Signed-off-by: Tony Lindgren Reviewed-by: Michael Walle --- drivers/gpu/drm/bridge/tc358775.c | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c --- a/drivers/gpu/drm/bridge/tc358775.c +++ b/drivers/gpu/drm/bridge/tc358775.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -107,6 +108,7 @@ #define RDPKTLN 0x0404 /* Command Read Packet Length */ #define VPCTRL 0x0450 /* Video Path Control */ +#define EVTMODE BIT(5) /* Video event mode enable, tc35876x only */ #define HTIM1 0x0454 /* Horizontal Timing Control 1 */ #define HTIM2 0x0458 /* Horizontal Timing Control 2 */ #define VTIM1 0x045C /* Vertical Timing Control 1 */ @@ -254,6 +256,11 @@ enum tc358775_ports { TC358775_LVDS_OUT1, }; +enum tc3587x5_type { + TC358765, + TC358775, +}; + struct tc_data { struct i2c_client *i2c; struct device *dev; @@ -271,6 +278,8 @@ struct tc_data { struct gpio_desc *stby_gpio; u8 lvds_link; /* single-link or dual-link */ u8 bpc; + + enum tc3587x5_type type; }; static inline struct tc_data *bridge_to_tc(struct drm_bridge *b) @@ -424,10 +433,16 @@ static void tc_bridge_enable(struct drm_bridge *bridge) d2l_write(tc->i2c, PPI_STARTPPI, PPI_START_FUNCTION); d2l_write(tc->i2c, DSI_STARTDSI, DSI_RX_START); + /* Video event mode vs pulse mode bit, does not exist for tc358775 */ + if (tc->type == TC358765) + val = EVTMODE; + else + val = 0; + if (tc->bpc == 8) - val = TC358775_VPCTRL_OPXLFMT(1); + val |= TC358775_VPCTRL_OPXLFMT(1); else /* bpc = 6; */ - val = TC358775_VPCTRL_MSF(1); + val |= TC358775_VPCTRL_MSF(1); dsiclk = mode->crtc_clock * 3 * tc->bpc / tc->num_dsi_lanes / 1000; clkdiv = dsiclk / (tc->lvds_link == DUAL_LINK ? DIVIDE_BY_6 : DIVIDE_BY_3); @@ -643,6 +658,7 @@ static int tc_probe(struct i2c_client *client) tc->dev = dev; tc->i2c = client; + tc->type = (enum tc3587x5_type)of_device_get_match_data(dev); tc->panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, TC358775_LVDS_OUT0, 0); @@ -704,13 +720,15 @@ static void tc_remove(struct i2c_client *client) } static const struct i2c_device_id tc358775_i2c_ids[] = { - { "tc358775", 0 }, + { "tc358765", TC358765, }, + { "tc358775", TC358775, }, { } }; MODULE_DEVICE_TABLE(i2c, tc358775_i2c_ids); static const struct of_device_id tc358775_of_ids[] = { - { .compatible = "toshiba,tc358775", }, + { .compatible = "toshiba,tc358765", .data = (void *)TC358765, }, + { .compatible = "toshiba,tc358775", .data = (void *)TC358775, }, { } }; MODULE_DEVICE_TABLE(of, tc358775_of_ids);