From patchwork Mon Jun 10 22:22:38 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Hesselbarth X-Patchwork-Id: 2700001 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id CC0C6DF23A for ; Tue, 11 Jun 2013 05:45:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AA2D0E632E for ; Mon, 10 Jun 2013 22:45:54 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-bk0-f51.google.com (mail-bk0-f51.google.com [209.85.214.51]) by gabe.freedesktop.org (Postfix) with ESMTP id 98408E5F2A for ; Mon, 10 Jun 2013 15:22:51 -0700 (PDT) Received: by mail-bk0-f51.google.com with SMTP id ji1so2833702bkc.38 for ; Mon, 10 Jun 2013 15:22:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=QTMZw3P3dw0Tc1uaG7urN0hbbH6+jSBqCzw8bCTWWOU=; b=YmbikpwaTT2slzXNjDB8xMVTKtlJrhYOYWfFkZe9AeHrEFCWkvn8JUvklK12kphZ2c 8EDfrDOAlVPmLIjgY0xIFt116pX13WEF/8vjl+AF0JID0YjApuyMBicgRsLPVu623qOV YmwUIp42tqYURuIAQQ4orIwaKbgXCiLwu4VSDSLzuWPCe2/SpHRK/GJBJJ4eR3RTXPHz +rbZxFJGm/4+3nPCFYMfcBHZhrBT2VSPDK/KMhHi8k6snk5C6dEQPWtm9jctFJX8fT88 4C3z/4uDUl+PVXvUQl/64/KKAsG7DlHAkkG4b5HHK8QmDngc3hLP+1m5qrSjHF7LKfDG ChzQ== X-Received: by 10.204.183.16 with SMTP id ce16mr1800636bkb.91.1370902970766; Mon, 10 Jun 2013 15:22:50 -0700 (PDT) Received: from topkick.lan (dslc-082-083-251-181.pools.arcor-ip.net. [82.83.251.181]) by mx.google.com with ESMTPSA id qw6sm3835141bkb.4.2013.06.10.15.22.47 for (version=TLSv1.2 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 10 Jun 2013 15:22:49 -0700 (PDT) Received: from picnic.unix.mst.uni-hannover.de (firewall.mst.uni-hannover.de [130.75.30.51]) by topkick.lan (Postfix) with ESMTPSA id 6DEE95F973; Tue, 11 Jun 2013 00:21:36 +0200 (CEST) From: Sebastian Hesselbarth To: Sebastian Hesselbarth Subject: [PATCH RFC v2] drm/i2c: tda998x: fix sync generation and calculation Date: Tue, 11 Jun 2013 00:22:38 +0200 Message-Id: <1370902958-8162-1-git-send-email-sebastian.hesselbarth@gmail.com> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1370899441-1333-1-git-send-email-sebastian.hesselbarth@gmail.com> References: <1370899441-1333-1-git-send-email-sebastian.hesselbarth@gmail.com> X-Mailman-Approved-At: Mon, 10 Jun 2013 22:36:18 -0700 Cc: Russell King - ARM Linux , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, Sebastian Hesselbarth X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org This fixes the wrong sync generation and sync calculation for progressive and interlaced modes. Sync timings for a bunch of modes have also been verified with an oscilloscope near-end (TDA998x input) and far-end (DVI receiver output). Signed-off-by: Sebastian Hesselbarth --- Note: This patch is based on rmk's Armada DRM driver plus some DT support fixes, so offsets may vary on your side. Anyway, please 3-way apply and test wherever possible. Changelog: v1->v2: - also fix interlaced sync generation (tested with 1080i50) Cc: David Airlie Cc: Russell King - ARM Linux Cc: Darren Etheridge Cc: linux-arm-kernel@lists.infradead.org Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org --- drivers/gpu/drm/i2c/tda998x_drv.c | 173 +++++++++++++++++++++++-------------- 1 files changed, 107 insertions(+), 66 deletions(-) diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index 819dcba..103a023 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -141,8 +141,12 @@ struct tda998x_priv { #define REG_VS_LINE_END_1_LSB REG(0x00, 0xae) /* write */ #define REG_VS_PIX_END_1_MSB REG(0x00, 0xaf) /* write */ #define REG_VS_PIX_END_1_LSB REG(0x00, 0xb0) /* write */ +#define REG_VS_LINE_STRT_2_MSB REG(0x00, 0xb1) /* write */ +#define REG_VS_LINE_STRT_2_LSB REG(0x00, 0xb2) /* write */ #define REG_VS_PIX_STRT_2_MSB REG(0x00, 0xb3) /* write */ #define REG_VS_PIX_STRT_2_LSB REG(0x00, 0xb4) /* write */ +#define REG_VS_LINE_END_2_MSB REG(0x00, 0xb5) /* write */ +#define REG_VS_LINE_END_2_LSB REG(0x00, 0xb6) /* write */ #define REG_VS_PIX_END_2_MSB REG(0x00, 0xb7) /* write */ #define REG_VS_PIX_END_2_LSB REG(0x00, 0xb8) /* write */ #define REG_HS_PIX_START_MSB REG(0x00, 0xb9) /* write */ @@ -153,21 +157,29 @@ struct tda998x_priv { #define REG_VWIN_START_1_LSB REG(0x00, 0xbe) /* write */ #define REG_VWIN_END_1_MSB REG(0x00, 0xbf) /* write */ #define REG_VWIN_END_1_LSB REG(0x00, 0xc0) /* write */ +#define REG_VWIN_START_2_MSB REG(0x00, 0xc1) /* write */ +#define REG_VWIN_START_2_LSB REG(0x00, 0xc2) /* write */ +#define REG_VWIN_END_2_MSB REG(0x00, 0xc3) /* write */ +#define REG_VWIN_END_2_LSB REG(0x00, 0xc4) /* write */ #define REG_DE_START_MSB REG(0x00, 0xc5) /* write */ #define REG_DE_START_LSB REG(0x00, 0xc6) /* write */ #define REG_DE_STOP_MSB REG(0x00, 0xc7) /* write */ #define REG_DE_STOP_LSB REG(0x00, 0xc8) /* write */ #define REG_TBG_CNTRL_0 REG(0x00, 0xca) /* write */ +# define TBG_CNTRL_0_TOP_TGL (1 << 0) +# define TBG_CNTRL_0_TOP_SEL (1 << 1) +# define TBG_CNTRL_0_DE_EXT (1 << 2) +# define TBG_CNTRL_0_TOP_EXT (1 << 3) # define TBG_CNTRL_0_FRAME_DIS (1 << 5) # define TBG_CNTRL_0_SYNC_MTHD (1 << 6) # define TBG_CNTRL_0_SYNC_ONCE (1 << 7) #define REG_TBG_CNTRL_1 REG(0x00, 0xcb) /* write */ -# define TBG_CNTRL_1_VH_TGL_0 (1 << 0) -# define TBG_CNTRL_1_VH_TGL_1 (1 << 1) -# define TBG_CNTRL_1_VH_TGL_2 (1 << 2) -# define TBG_CNTRL_1_VHX_EXT_DE (1 << 3) -# define TBG_CNTRL_1_VHX_EXT_HS (1 << 4) -# define TBG_CNTRL_1_VHX_EXT_VS (1 << 5) +# define TBG_CNTRL_1_H_TGL (1 << 0) +# define TBG_CNTRL_1_V_TGL (1 << 1) +# define TBG_CNTRL_1_TGL_EN (1 << 2) +# define TBG_CNTRL_1_X_EXT (1 << 3) +# define TBG_CNTRL_1_H_EXT (1 << 4) +# define TBG_CNTRL_1_V_EXT (1 << 5) # define TBG_CNTRL_1_DWIN_DIS (1 << 6) #define REG_ENABLE_SPACE REG(0x00, 0xd6) /* write */ #define REG_HVF_CNTRL_0 REG(0x00, 0xe4) /* write */ @@ -740,43 +752,62 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder, struct drm_display_mode *adjusted_mode) { struct tda998x_priv *priv = to_tda998x_priv(encoder); - uint16_t hs_start, hs_end, line_start, line_end; - uint16_t vwin_start, vwin_end, de_start, de_end; - uint16_t ref_pix, ref_line, pix_start2; + uint16_t ref_pix, ref_line, n_pix, n_line; + uint16_t hs_pix_s, hs_pix_e; + uint16_t vs1_pix_s, vs1_pix_e, vs1_line_s, vs1_line_e; + uint16_t vs2_pix_s, vs2_pix_e, vs2_line_s, vs2_line_e; + uint16_t vwin1_line_s, vwin1_line_e; + uint16_t vwin2_line_s, vwin2_line_e; + uint16_t de_pix_s, de_pix_e; uint8_t reg, div, rep; - hs_start = mode->hsync_start - mode->hdisplay; - hs_end = mode->hsync_end - mode->hdisplay; - line_start = 1; - line_end = 1 + mode->vsync_end - mode->vsync_start; - vwin_start = mode->vtotal - mode->vsync_start; - vwin_end = vwin_start + mode->vdisplay; - de_start = mode->htotal - mode->hdisplay; - de_end = mode->htotal; - - pix_start2 = 0; - if (mode->flags & DRM_MODE_FLAG_INTERLACE) - pix_start2 = (mode->htotal / 2) + hs_start; - - /* TODO how is this value calculated? It is 2 for all common - * formats in the tables in out of tree nxp driver (assuming - * I've properly deciphered their byzantine table system) + /* + * Internally TDA998x is using ITU-R BT.656 style sync but + * we get VESA style sync. TDA998x is using a reference pixel + * relative to ITU to sync to the input frame and for output + * sync generation. + * + * Now there is some issues to take care of: + * - TDA998x register values must be > 0 to be enabled + * - REFLINE needs an additional offset of +1 + * - REFPIX needs an addtional offset of +1 for UYUV and +3 for RGB + * + * So we add +1 to all horizontal and vertical register values, + * plus an additional +3 for REFPIX as we are using RGB input only. */ - ref_line = 2; - - /* this might changes for other color formats from the CRTC: */ - ref_pix = 3 + hs_start; + n_pix = mode->htotal; + n_line = mode->vtotal; + ref_pix = 4 + mode->hsync_start; + de_pix_s = 1; + de_pix_e = de_pix_s + mode->hdisplay; + hs_pix_s = 1 + mode->hsync_start; + hs_pix_e = 1 + mode->hsync_end; + + if (mode->flags & DRM_MODE_FLAG_INTERLACE == 0) { + ref_line = 2 + mode->vsync_start; + vwin1_line_s = 1; + vwin1_line_e = vwin1_line_s + mode->vdisplay; + vs1_pix_s = vs1_pix_e = hs_pix_s; + vs1_line_s = 1 + mode->vsync_start; + vs1_line_e = 1 + mode->vsync_end; + vwin2_line_s = vwin2_line_e = 0; + vs2_pix_s = vs2_pix_e = 0; + vs2_line_s = vs2_line_e = 0; + } else { + ref_line = 2 + (mode->vsync_start / 2); + vwin1_line_s = 1; + vwin1_line_e = vwin1_line_s + (mode->vdisplay/2); + vs1_line_s = 1 + (mode->vsync_start / 2); + vs1_line_e = vs1_line_s + (mode->vsync_end / 2); + vwin2_line_s = vwin1_line_s + (mode->vtotal/2) + 1; + vwin2_line_e = vwin2_line_s + (mode->vdisplay/2); + vs2_pix_s = vs2_pix_e = hs_pix_s + (mode->htotal/2); + vs2_line_s = 1 + mode->vsync_start; + vs2_line_e = 1 + mode->vsync_end; + } div = 148500 / mode->clock; - DBG("clock=%d, div=%u", mode->clock, div); - DBG("hs_start=%u, hs_end=%u, line_start=%u, line_end=%u", - hs_start, hs_end, line_start, line_end); - DBG("vwin_start=%u, vwin_end=%u, de_start=%u, de_end=%u", - vwin_start, vwin_end, de_start, de_end); - DBG("ref_line=%u, ref_pix=%u, pix_start2=%u", - ref_line, ref_pix, pix_start2); - /* mute the audio FIFO: */ reg_set(encoder, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO); @@ -807,9 +838,6 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder, reg_write(encoder, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(div) | PLL_SERIAL_2_SRL_PR(rep)); - reg_write16(encoder, REG_VS_PIX_STRT_2_MSB, pix_start2); - reg_write16(encoder, REG_VS_PIX_END_2_MSB, pix_start2); - /* set color matrix bypass flag: */ reg_set(encoder, REG_MAT_CONTRL, MAT_CONTRL_MAT_BP); @@ -818,46 +846,59 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder, reg_clear(encoder, REG_TBG_CNTRL_0, TBG_CNTRL_0_SYNC_MTHD); + /* + * Sync on rising HSYNC/VSYNC + */ reg_write(encoder, REG_VIP_CNTRL_3, 0); reg_set(encoder, REG_VIP_CNTRL_3, VIP_CNTRL_3_SYNC_HS); + + /* + * TDA19988 requires high-active sync at input stage, + * so invert low-active sync provided by master encoder here + */ + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + reg_set(encoder, REG_VIP_CNTRL_3, VIP_CNTRL_3_H_TGL); if (mode->flags & DRM_MODE_FLAG_NVSYNC) reg_set(encoder, REG_VIP_CNTRL_3, VIP_CNTRL_3_V_TGL); + /* + * Always generate sync polarity relative to input sync and + * revert input stage toggled sync at output stage + */ + reg = TBG_CNTRL_1_TGL_EN; if (mode->flags & DRM_MODE_FLAG_NHSYNC) - reg_set(encoder, REG_VIP_CNTRL_3, VIP_CNTRL_3_H_TGL); + reg |= TBG_CNTRL_1_H_TGL; + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + reg |= TBG_CNTRL_1_V_TGL; + reg_write(encoder, REG_TBG_CNTRL_1, reg); reg_write(encoder, REG_VIDFORMAT, 0x00); - reg_write16(encoder, REG_NPIX_MSB, mode->htotal); - reg_write16(encoder, REG_NLINE_MSB, mode->vtotal); - reg_write16(encoder, REG_VS_LINE_STRT_1_MSB, line_start); - reg_write16(encoder, REG_VS_LINE_END_1_MSB, line_end); - reg_write16(encoder, REG_VS_PIX_STRT_1_MSB, hs_start); - reg_write16(encoder, REG_VS_PIX_END_1_MSB, hs_start); - reg_write16(encoder, REG_HS_PIX_START_MSB, hs_start); - reg_write16(encoder, REG_HS_PIX_STOP_MSB, hs_end); - reg_write16(encoder, REG_VWIN_START_1_MSB, vwin_start); - reg_write16(encoder, REG_VWIN_END_1_MSB, vwin_end); - reg_write16(encoder, REG_DE_START_MSB, de_start); - reg_write16(encoder, REG_DE_STOP_MSB, de_end); + reg_write16(encoder, REG_REFPIX_MSB, ref_pix); + reg_write16(encoder, REG_REFLINE_MSB, ref_line); + reg_write16(encoder, REG_NPIX_MSB, n_pix); + reg_write16(encoder, REG_NLINE_MSB, n_line); + reg_write16(encoder, REG_VS_LINE_STRT_1_MSB, vs1_line_s); + reg_write16(encoder, REG_VS_PIX_STRT_1_MSB, vs1_pix_s); + reg_write16(encoder, REG_VS_LINE_END_1_MSB, vs1_line_e); + reg_write16(encoder, REG_VS_PIX_END_1_MSB, vs1_pix_e); + reg_write16(encoder, REG_VS_LINE_STRT_2_MSB, vs2_line_s); + reg_write16(encoder, REG_VS_PIX_STRT_2_MSB, vs2_pix_s); + reg_write16(encoder, REG_VS_LINE_END_2_MSB, vs2_line_e); + reg_write16(encoder, REG_VS_PIX_END_2_MSB, vs2_pix_e); + reg_write16(encoder, REG_HS_PIX_START_MSB, hs_pix_s); + reg_write16(encoder, REG_HS_PIX_STOP_MSB, hs_pix_e); + reg_write16(encoder, REG_VWIN_START_1_MSB, vwin1_line_s); + reg_write16(encoder, REG_VWIN_END_1_MSB, vwin1_line_e); + reg_write16(encoder, REG_VWIN_START_2_MSB, vwin2_line_s); + reg_write16(encoder, REG_VWIN_END_2_MSB, vwin2_line_e); + reg_write16(encoder, REG_DE_START_MSB, de_pix_s); + reg_write16(encoder, REG_DE_STOP_MSB, de_pix_e); if (priv->rev == TDA19988) { /* let incoming pixels fill the active space (if any) */ reg_write(encoder, REG_ENABLE_SPACE, 0x01); } - reg_write16(encoder, REG_REFPIX_MSB, ref_pix); - reg_write16(encoder, REG_REFLINE_MSB, ref_line); - - reg = TBG_CNTRL_1_DWIN_DIS | /* HDCP off */ - TBG_CNTRL_1_VH_TGL_2; - /* - * It is questionable whether this is correct - the nxp driver - * does not set VH_TGL_2 and the below for all display modes. - */ - if (mode->flags & (DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC)) - reg |= TBG_CNTRL_1_VH_TGL_0; - reg_set(encoder, REG_TBG_CNTRL_1, reg); - /* must be last register set: */ reg_clear(encoder, REG_TBG_CNTRL_0, TBG_CNTRL_0_SYNC_ONCE);