From patchwork Sun Nov 26 18:56:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 747445 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=atomide.com header.i=@atomide.com header.b="lR3EO1mF" Received: from mail5.25mail.st (mail5.25mail.st [74.50.62.9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F2C8107 for ; Sun, 26 Nov 2023 10:57:36 -0800 (PST) Received: from localhost (91-158-86-216.elisa-laajakaista.fi [91.158.86.216]) by mail5.25mail.st (Postfix) with ESMTPSA id 3ED59604DD; Sun, 26 Nov 2023 18:56:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=atomide.com; s=25mailst; t=1701025055; bh=ZvVqIuD0d9Tn28us7HyavAfK8kAIYY6+EYFfE0Fl3Ro=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=lR3EO1mFh+2yQruWymfFJwV3egJi4K9MHs20Yp6V23a9S9L2k0O971br6RpTm6yVp X4Brf3rnNhE+LReEOd/5jmQsvFVqcKO+EwpAZh2PFS+NtwgIHfG7605LttwCSrrSEt nKoJCshnm0jUiyJMAnw6Yf8Rpt+6lRc1/TcAjTlNBKMmde9EpJTWq/SUZH3g5i0K/W ydrFZd47SRRuw3IzxgBPHbqwyxurFg8CZok2Q+52noFzm237bskxx2vMyVjc+AAQ8B BMvnFJtuCyQ3HqxRUaYav/SZMTXK5LchfbBTtkmKyjscBGdX/TahmbjAZS7SXZM4YW 6dvLsPakO23gQ== Date: Sun, 26 Nov 2023 20:56:52 +0200 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 , Sam Ravnborg , Vinay Simha BN Cc: Carl Philipp Klemm , devicetree@vger.kernel.org, Ivaylo Dimitrov , Merlijn Wajer , Sebastian Reichel , dri-devel@lists.freedesktop.org, Pavel Machek Subject: [PATCH 5/6] drm/bridge: tc358775: Add support for tc358765 Message-ID: <20231126182135.GA5166@atomide.com> References: <20231126163247.10131-1-tony@atomide.com> <20231126163247.10131-2-tony@atomide.com> <20231126171837.GK5169@atomide.com> <20231126172018.GL5169@atomide.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20231126172018.GL5169@atomide.com> Looks like tc358775 is pin compatible with earlier tc358765 according to the tc358774xbg_datasheet_en_20190118.pdf documentation. On tc358775, there is an extra GPIO for STBY pin added, and few other improvments. The tc358765 has a register bit for video event mode that we must set for the LCD output to work. On 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 --- drivers/gpu/drm/bridge/tc358775.c | 55 +++++++++++++++++++++++-------- 1 file changed, 42 insertions(+), 13 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) @@ -294,8 +303,10 @@ static void tc_bridge_pre_enable(struct drm_bridge *bridge) dev_err(dev, "regulator vdd enable failed, %d\n", ret); usleep_range(10000, 11000); - gpiod_set_value(tc->stby_gpio, 0); - usleep_range(10000, 11000); + if (!IS_ERR(tc->stby_gpio)) { + gpiod_set_value(tc->stby_gpio, 0); + usleep_range(10000, 11000); + } gpiod_set_value(tc->reset_gpio, 0); usleep_range(10, 20); @@ -310,8 +321,10 @@ static void tc_bridge_post_disable(struct drm_bridge *bridge) gpiod_set_value(tc->reset_gpio, 1); usleep_range(10, 20); - gpiod_set_value(tc->stby_gpio, 1); - usleep_range(10000, 11000); + if (!IS_ERR(tc->stby_gpio)) { + gpiod_set_value(tc->stby_gpio, 1); + usleep_range(10000, 11000); + } ret = regulator_disable(tc->vdd); if (ret < 0) @@ -424,10 +437,16 @@ 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, this 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); @@ -656,6 +675,7 @@ 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); @@ -680,11 +700,15 @@ static int tc_probe(struct i2c_client *client) return ret; } - tc->stby_gpio = devm_gpiod_get(dev, "stby", GPIOD_OUT_HIGH); - if (IS_ERR(tc->stby_gpio)) { - ret = PTR_ERR(tc->stby_gpio); - dev_err(dev, "cannot get stby-gpio %d\n", ret); - return ret; + if (tc->type == TC358775) { + tc->stby_gpio = devm_gpiod_get(dev, "stby", GPIOD_OUT_HIGH); + if (IS_ERR(tc->stby_gpio)) { + ret = PTR_ERR(tc->stby_gpio); + dev_err(dev, "cannot get stby-gpio %d\n", ret); + return ret; + } + } else { + tc->stby_gpio = ERR_PTR(-ENODEV); } tc->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); @@ -696,6 +720,7 @@ static int tc_probe(struct i2c_client *client) tc->bridge.funcs = &tc_bridge_funcs; tc->bridge.of_node = dev->of_node; + tc->bridge.pre_enable_prev_first = true; drm_bridge_add(&tc->bridge); i2c_set_clientdata(client, tc); @@ -715,17 +740,21 @@ static void tc_remove(struct i2c_client *client) { struct tc_data *tc = i2c_get_clientdata(client); + mipi_dsi_detach(tc->dsi); drm_bridge_remove(&tc->bridge); + tc->bridge.funcs = NULL; } 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);