Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933105Ab0DHRU3 (ORCPT ); Thu, 8 Apr 2010 13:20:29 -0400 Received: from tex.lwn.net ([70.33.254.29]:46501 "EHLO vena.lwn.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932987Ab0DHRQy (ORCPT ); Thu, 8 Apr 2010 13:16:54 -0400 From: Jonathan Corbet To: linux-kernel@vger.kernel.org Cc: Florian Tobias Schandinat , Harald Welte , JosephChan@via.com.tw, ScottFang@viatech.com.cn, Deepak Saxena , linux-fbdev-devel@lists.sourceforge.net Subject: [PATCH 06/16] viafb: complete support for VX800/VX855 accelerated framebuffer Date: Thu, 8 Apr 2010 11:15:36 -0600 Message-Id: <1270746946-12467-7-git-send-email-corbet@lwn.net> X-Mailer: git-send-email 1.7.0.1 In-Reply-To: <1270746946-12467-1-git-send-email-corbet@lwn.net> References: <1270746946-12467-1-git-send-email-corbet@lwn.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6244 Lines: 167 This patch is a painful merge of change a90bab567ece3e915d0ccd55ab00c9bb333fa8c0 (viafb: Add support for 2D accelerated framebuffer on VX800/VX855) in the OLPC tree, originally by Harald Welte. Harald's changelog read: The VX800/VX820 and the VX855/VX875 chipsets have a different 2D acceleration engine called "M1". The M1 engine has some subtle (and some not-so-subtle) differences to the previous engines, so support for accelerated framebuffer on those chipsets was disabled so far. This merge tries to preserve Harald's changes in the framework of the much-changed 2.6.34 viafb code. Signed-off-by: Jonathan Corbet --- drivers/video/via/accel.c | 39 +++++++++++++++++++++++++++++++++------ drivers/video/via/accel.h | 40 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 73 insertions(+), 6 deletions(-) diff --git a/drivers/video/via/accel.c b/drivers/video/via/accel.c index 78c0a2b..7fe1c1d 100644 --- a/drivers/video/via/accel.c +++ b/drivers/video/via/accel.c @@ -328,6 +328,7 @@ int viafb_init_engine(struct fb_info *info) { struct viafb_par *viapar = info->par; void __iomem *engine; + int highest_reg, i; u32 vq_start_addr, vq_end_addr, vq_start_low, vq_end_low, vq_high, vq_len, chip_name = viapar->shared->chip_info.gfx_chip_name; @@ -339,6 +340,18 @@ int viafb_init_engine(struct fb_info *info) return -ENOMEM; } + /* Initialize registers to reset the 2D engine */ + switch (viapar->shared->chip_info.twod_engine) { + case VIA_2D_ENG_M1: + highest_reg = 0x5c; + break; + default: + highest_reg = 0x40; + break; + } + for (i = 0; i <= highest_reg; i+= 4) + writel(0x0, engine + i); + switch (chip_name) { case UNICHROME_CLE266: case UNICHROME_K400: @@ -375,6 +388,8 @@ int viafb_init_engine(struct fb_info *info) switch (chip_name) { case UNICHROME_K8M890: case UNICHROME_P4M900: + case UNICHROME_VX800: + case UNICHROME_VX855: writel(0x00100000, engine + VIA_REG_CR_TRANSET); writel(0x680A0000, engine + VIA_REG_CR_TRANSPACE); writel(0x02000000, engine + VIA_REG_CR_TRANSPACE); @@ -409,6 +424,8 @@ int viafb_init_engine(struct fb_info *info) switch (chip_name) { case UNICHROME_K8M890: case UNICHROME_P4M900: + case UNICHROME_VX800: + case UNICHROME_VX855: vq_start_low |= 0x20000000; vq_end_low |= 0x20000000; vq_high |= 0x20000000; @@ -486,15 +503,25 @@ void viafb_wait_engine_idle(struct fb_info *info) { struct viafb_par *viapar = info->par; int loop = 0; + u32 mask; - while (!(readl(viapar->shared->engine_mmio + VIA_REG_STATUS) & - VIA_VR_QUEUE_BUSY) && (loop < MAXLOOP)) { - loop++; - cpu_relax(); + switch (viapar->shared->chip_info.twod_engine) { + case VIA_2D_ENG_H5: + case VIA_2D_ENG_M1: + mask = VIA_CMD_RGTR_BUSY_M1 | VIA_2D_ENG_BUSY_M1 | + VIA_3D_ENG_BUSY_M1; + break; + default: + while (!(readl(viapar->shared->engine_mmio + VIA_REG_STATUS) & + VIA_VR_QUEUE_BUSY) && (loop < MAXLOOP)) { + loop++; + cpu_relax(); + } + mask = VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY | VIA_3D_ENG_BUSY; + break; } - while ((readl(viapar->shared->engine_mmio + VIA_REG_STATUS) & - (VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY | VIA_3D_ENG_BUSY)) && + while ((readl(viapar->shared->engine_mmio + VIA_REG_STATUS) & mask) && (loop < MAXLOOP)) { loop++; cpu_relax(); diff --git a/drivers/video/via/accel.h b/drivers/video/via/accel.h index 615c84a..2c122d2 100644 --- a/drivers/video/via/accel.h +++ b/drivers/video/via/accel.h @@ -67,6 +67,34 @@ /* from 0x100 to 0x1ff */ #define VIA_REG_COLORPAT 0x100 +/* defines for VIA 2D registers for vt3353/3409 (M1 engine)*/ +#define VIA_REG_GECMD_M1 0x000 +#define VIA_REG_GEMODE_M1 0x004 +#define VIA_REG_GESTATUS_M1 0x004 /* as same as VIA_REG_GEMODE */ +#define VIA_REG_PITCH_M1 0x008 /* pitch of src and dst */ +#define VIA_REG_DIMENSION_M1 0x00C /* width and height */ +#define VIA_REG_DSTPOS_M1 0x010 +#define VIA_REG_LINE_XY_M1 0x010 +#define VIA_REG_DSTBASE_M1 0x014 +#define VIA_REG_SRCPOS_M1 0x018 +#define VIA_REG_LINE_K1K2_M1 0x018 +#define VIA_REG_SRCBASE_M1 0x01C +#define VIA_REG_PATADDR_M1 0x020 +#define VIA_REG_MONOPAT0_M1 0x024 +#define VIA_REG_MONOPAT1_M1 0x028 +#define VIA_REG_OFFSET_M1 0x02C +#define VIA_REG_LINE_ERROR_M1 0x02C +#define VIA_REG_CLIPTL_M1 0x040 /* top and left of clipping */ +#define VIA_REG_CLIPBR_M1 0x044 /* bottom and right of clipping */ +#define VIA_REG_KEYCONTROL_M1 0x048 /* color key control */ +#define VIA_REG_FGCOLOR_M1 0x04C +#define VIA_REG_DSTCOLORKEY_M1 0x04C /* as same as VIA_REG_FG */ +#define VIA_REG_BGCOLOR_M1 0x050 +#define VIA_REG_SRCCOLORKEY_M1 0x050 /* as same as VIA_REG_BG */ +#define VIA_REG_MONOPATFGC_M1 0x058 /* Add BG color of Pattern. */ +#define VIA_REG_MONOPATBGC_M1 0x05C /* Add FG color of Pattern. */ +#define VIA_REG_COLORPAT_M1 0x100 /* from 0x100 to 0x1ff */ + /* VIA_REG_PITCH(0x38): Pitch Setting */ #define VIA_PITCH_ENABLE 0x80000000 @@ -157,6 +185,18 @@ /* Virtual Queue is busy */ #define VIA_VR_QUEUE_BUSY 0x00020000 +/* VIA_REG_STATUS(0x400): Engine Status for H5 */ +#define VIA_CMD_RGTR_BUSY_H5 0x00000010 /* Command Regulator is busy */ +#define VIA_2D_ENG_BUSY_H5 0x00000002 /* 2D Engine is busy */ +#define VIA_3D_ENG_BUSY_H5 0x00001FE1 /* 3D Engine is busy */ +#define VIA_VR_QUEUE_BUSY_H5 0x00000004 /* Virtual Queue is busy */ + +/* VIA_REG_STATUS(0x400): Engine Status for VT3353/3409 */ +#define VIA_CMD_RGTR_BUSY_M1 0x00000010 /* Command Regulator is busy */ +#define VIA_2D_ENG_BUSY_M1 0x00000002 /* 2D Engine is busy */ +#define VIA_3D_ENG_BUSY_M1 0x00001FE1 /* 3D Engine is busy */ +#define VIA_VR_QUEUE_BUSY_M1 0x00000004 /* Virtual Queue is busy */ + #define MAXLOOP 0xFFFFFF #define VIA_BITBLT_COLOR 1 -- 1.7.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/