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[194.78.124.253]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a4eacd6f1bsm1769856f8f.80.2025.05.28.08.43.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 May 2025 08:43:24 -0700 (PDT) From: Bram Vlerick Date: Wed, 28 May 2025 17:42:30 +0200 Subject: [PATCH] staging: fbtft: add invert display parameter MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250528-ili9341-invert-dtb-v1-1-080202809332@openpixelsystems.org> X-B4-Tracking: v=1; b=H4sIAOUuN2gC/x3MTQqAIBBA4avErBswS/u5SrSoHGsgLFQiCO+et PwW770QyDMFGIoXPN0c+HQZVVnAus9uI2STDVJIJZTskA/u66ZCdjf5iCYuKNpZaaVJG2sgh5c ny88/HaeUPolD9bRkAAAA X-Change-ID: 20250528-ili9341-invert-dtb-07a5656e6dfd To: Greg Kroah-Hartman Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Bram Vlerick X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2995; i=bram.vlerick@openpixelsystems.org; h=from:subject:message-id; bh=BMRUJzr0/HLa3ogV5/HusC1YamEdyusN8YfIZyUZixE=; b=owEBbQKS/ZANAwAIAblauka9BQbwAcsmYgBoNy8chB2y8w5nbK9+RztKsMs3unwb1aVwo2U36 FwTbirKHOeJAjMEAAEIAB0WIQQO7PtG7b77XLxuay25WrpGvQUG8AUCaDcvHAAKCRC5WrpGvQUG 8GvpD/9SsZFzhvQs0gQHp72J5bWBgaHGOAaSW43Xne+PZMAjdUCH4O23F2Syc387TEDUe/FTeWZ kp5HtOO3HdadO8z0wT6nXXINzJfFLkXufNXmxFbHQ8x2VuSGTlIKYhuzla4BlFV+dJJ60/83RRX DKADQ1s4itlnkqEVyeD3cJad734FHh6ZjaqG7sZobZxqcZcGRO7LBBO2SSveqlUZO502Tp9b0MM LHZwjVFPUcDWZpBoJZUTg0Bw5calTX2Mh/Ibwzr1yERYLUO01KqWi2/01IGvu01G3ucNGq0RR2A n7LHuRVOZkJFaBjUx2XPi7bPBYD47fgBMRT5/uIeCM5gh/W/DXFUU+t6j5A6vOE7SF61jWbGrsY wBC3xLx+WDXCvrFhj9xAmV5L+TRjvCEWIsuOy7q88ge/SI7t4d913AWKAEvdvhnhllg+mOSH7Dc BZOo5wTDep2WxoScD9VgeqMv4v8QwkOGCv9H1fDhWZY1fxNCwvpQU9bH111ZD8aSHZPAEHgTdQN eKx6hZNtBFIjq40TAQ5zQnGnAa2NfisLBqVqKAFgaqFahnwB3bRj6EXC4ME4wuCKH1g2O8+xQKY LLKmSqiMsu+UM56ihNwxQ4hVpy5WeDercM0s+Fc2UdFzPNnzrSr1G4BS1YhpzNousCBK7vnlKwX dOZ+YVluePM0Drg== X-Developer-Key: i=bram.vlerick@openpixelsystems.org; a=openpgp; fpr=0EECFB46EDBEFB5CBC6E6B2DB95ABA46BD0506F0 X-Mailman-Approved-At: Thu, 29 May 2025 08:52:55 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add devicetree parameter to enable or disable the invert feature of the ili9341 display Signed-off-by: Bram Vlerick --- drivers/staging/fbtft/fb_ili9341.c | 3 +++ drivers/staging/fbtft/fbtft-core.c | 2 ++ drivers/staging/fbtft/fbtft.h | 3 +++ 3 files changed, 8 insertions(+) diff --git a/drivers/staging/fbtft/fb_ili9341.c b/drivers/staging/fbtft/fb_ili9341.c index 47e72b87d76d996111aaadcf5e56dfdfc1c331ab..a184f57df12b5ad6612a2e83b664a8911c7c79be 100644 --- a/drivers/staging/fbtft/fb_ili9341.c +++ b/drivers/staging/fbtft/fb_ili9341.c @@ -103,6 +103,9 @@ static int set_var(struct fbtft_par *par) break; } + if (par->invert) + write_reg(par, 0x21); + return 0; } diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c index da9c64152a606dc4a176f5a37fa59f6a7d3a2af3..4e827e9899e32313f2e4a9bf12ff49283a63fed3 100644 --- a/drivers/staging/fbtft/fbtft-core.c +++ b/drivers/staging/fbtft/fbtft-core.c @@ -641,6 +641,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display, par->buf = buf; spin_lock_init(&par->dirty_lock); par->bgr = pdata->bgr; + par->invert = pdata->invert; par->startbyte = pdata->startbyte; par->init_sequence = init_sequence; par->gamma.curves = gamma_curves; @@ -1107,6 +1108,7 @@ static struct fbtft_platform_data *fbtft_properties_read(struct device *dev) pdata->display.bpp = fbtft_property_value(dev, "bpp"); pdata->display.debug = fbtft_property_value(dev, "debug"); pdata->rotate = fbtft_property_value(dev, "rotate"); + pdata->invert = device_property_read_bool(dev, "invert"); pdata->bgr = device_property_read_bool(dev, "bgr"); pdata->fps = fbtft_property_value(dev, "fps"); pdata->txbuflen = fbtft_property_value(dev, "txbuflen"); diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h index 317be17b95c1672404fc6aecda24d0a1f563685d..71c9c35e7548de314088ac3aeb160d6c6aaf75c9 100644 --- a/drivers/staging/fbtft/fbtft.h +++ b/drivers/staging/fbtft/fbtft.h @@ -125,6 +125,7 @@ struct fbtft_display { * @display: Display properties * @gpios: Pointer to an array of pinname to gpio mappings * @rotate: Display rotation angle + * @invert: Invert display colors * @bgr: LCD Controller BGR bit * @fps: Frames per second (this will go away, use @fps in @fbtft_display) * @txbuflen: Size of transmit buffer @@ -135,6 +136,7 @@ struct fbtft_display { struct fbtft_platform_data { struct fbtft_display display; unsigned int rotate; + bool invert; bool bgr; unsigned int fps; int txbuflen; @@ -229,6 +231,7 @@ struct fbtft_par { bool first_update_done; ktime_t update_time; bool bgr; + bool invert; void *extra; bool polarity; }; --- base-commit: 914873bc7df913db988284876c16257e6ab772c6 change-id: 20250528-ili9341-invert-dtb-07a5656e6dfd Best regards, -- Bram Vlerick