lxfb: GEODE: Add framebuffer support for the AMD Geode LX (3968cb49) · Commits · e / devices / android_kernel_teracube_emerald

drivers/video/geode/Kconfig

+15 −0

Original line number	Diff line number	Diff line
		@@ -8,6 +8,21 @@ config FB_GEODE
		Say 'Y' here to allow you to select framebuffer drivers for
		the AMD Geode family of processors.

		config FB_GEODE_LX
		tristate "AMD Geode LX framebuffer support (EXPERIMENTAL)"
		depends on FB && FB_GEODE
		select FB_CFB_FILLRECT
		select FB_CFB_COPYAREA
		select FB_CFB_IMAGEBLIT
		---help---
		Framebuffer driver for the display controller integrated into the
		AMD Geode LX processors.

		To compile this driver as a module, choose M here: the module will
		be called lxfb.

		If unsure, say N.

		config FB_GEODE_GX
		tristate "AMD Geode GX framebuffer support (EXPERIMENTAL)"
		depends on FB && FB_GEODE && EXPERIMENTAL

drivers/video/geode/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -2,6 +2,8 @@

		obj-$(CONFIG_FB_GEODE_GX1) += gx1fb.o
		obj-$(CONFIG_FB_GEODE_GX) += gxfb.o
		obj-$(CONFIG_FB_GEODE_LX) += lxfb.o

		gx1fb-objs := gx1fb_core.o display_gx1.o video_cs5530.o
		gxfb-objs := gxfb_core.o display_gx.o video_gx.o
		lxfb-objs := lxfb_core.o lxfb_ops.o

drivers/video/geode/lxfb.h

0 → 100644

+199 −0

Original line number	Diff line number	Diff line
		#ifndef _LXFB_H_
		#define _LXFB_H_

		#include <linux/fb.h>

		#define OUTPUT_CRT 0x01
		#define OUTPUT_PANEL 0x02

		struct lxfb_par {
		int output;
		int panel_width;
		int panel_height;

		void __iomem *gp_regs;
		void __iomem *dc_regs;
		void __iomem *df_regs;
		};

		static inline unsigned int lx_get_pitch(unsigned int xres, int bpp)
		{
		return (((xres * (bpp >> 3)) + 7) & ~7);
		}

		void lx_set_mode(struct fb_info *);
		void lx_get_gamma(struct fb_info , unsigned int , int);
		void lx_set_gamma(struct fb_info , unsigned int , int);
		unsigned int lx_framebuffer_size(void);
		int lx_blank_display(struct fb_info *, int);
		void lx_set_palette_reg(struct fb_info *, unsigned int, unsigned int,
		unsigned int, unsigned int);

		/* MSRS */

		#define MSR_LX_GLD_CONFIG 0x48002001
		#define MSR_LX_GLCP_DOTPLL 0x4c000015
		#define MSR_LX_DF_PADSEL 0x48000011
		#define MSR_LX_DC_SPARE 0x80000011
		#define MSR_LX_DF_GLCONFIG 0x48002001

		#define MSR_LX_GLIU0_P2D_RO0 0x10000029

		#define GLCP_DOTPLL_RESET (1 << 0)
		#define GLCP_DOTPLL_BYPASS (1 << 15)
		#define GLCP_DOTPLL_HALFPIX (1 << 24)
		#define GLCP_DOTPLL_LOCK (1 << 25)

		#define DF_CONFIG_OUTPUT_MASK 0x38
		#define DF_OUTPUT_PANEL 0x08
		#define DF_OUTPUT_CRT 0x00
		#define DF_SIMULTANEOUS_CRT_AND_FP (1 << 15)

		#define DF_DEFAULT_TFT_PAD_SEL_LOW 0xDFFFFFFF
		#define DF_DEFAULT_TFT_PAD_SEL_HIGH 0x0000003F

		#define DC_SPARE_DISABLE_CFIFO_HGO 0x00000800
		#define DC_SPARE_VFIFO_ARB_SELECT 0x00000400
		#define DC_SPARE_WM_LPEN_OVRD 0x00000200
		#define DC_SPARE_LOAD_WM_LPEN_MASK 0x00000100
		#define DC_SPARE_DISABLE_INIT_VID_PRI 0x00000080
		#define DC_SPARE_DISABLE_VFIFO_WM 0x00000040
		#define DC_SPARE_DISABLE_CWD_CHECK 0x00000020
		#define DC_SPARE_PIX8_PAN_FIX 0x00000010
		#define DC_SPARE_FIRST_REQ_MASK 0x00000002

		/* Registers */

		#define DC_UNLOCK 0x00
		#define DC_UNLOCK_CODE 0x4758

		#define DC_GENERAL_CFG 0x04
		#define DC_GCFG_DFLE (1 << 0)
		#define DC_GCFG_VIDE (1 << 3)
		#define DC_GCFG_VGAE (1 << 7)
		#define DC_GCFG_CMPE (1 << 5)
		#define DC_GCFG_DECE (1 << 6)
		#define DC_GCFG_FDTY (1 << 17)

		#define DC_DISPLAY_CFG 0x08
		#define DC_DCFG_TGEN (1 << 0)
		#define DC_DCFG_GDEN (1 << 3)
		#define DC_DCFG_VDEN (1 << 4)
		#define DC_DCFG_TRUP (1 << 6)
		#define DC_DCFG_DCEN (1 << 24)
		#define DC_DCFG_PALB (1 << 25)
		#define DC_DCFG_VISL (1 << 27)

		#define DC_DCFG_16BPP 0x0

		#define DC_DCFG_DISP_MODE_MASK 0x00000300
		#define DC_DCFG_DISP_MODE_8BPP 0x00000000
		#define DC_DCFG_DISP_MODE_16BPP 0x00000100
		#define DC_DCFG_DISP_MODE_24BPP 0x00000200
		#define DC_DCFG_DISP_MODE_32BPP 0x00000300


		#define DC_ARB_CFG 0x0C

		#define DC_FB_START 0x10
		#define DC_CB_START 0x14
		#define DC_CURSOR_START 0x18

		#define DC_DV_TOP 0x2C
		#define DC_DV_TOP_ENABLE (1 << 0)

		#define DC_LINE_SIZE 0x30
		#define DC_GRAPHICS_PITCH 0x34
		#define DC_H_ACTIVE_TIMING 0x40
		#define DC_H_BLANK_TIMING 0x44
		#define DC_H_SYNC_TIMING 0x48
		#define DC_V_ACTIVE_TIMING 0x50
		#define DC_V_BLANK_TIMING 0x54
		#define DC_V_SYNC_TIMING 0x58
		#define DC_FB_ACTIVE 0x5C

		#define DC_PAL_ADDRESS 0x70
		#define DC_PAL_DATA 0x74

		#define DC_PHY_MEM_OFFSET 0x84

		#define DC_DV_CTL 0x88
		#define DC_DV_LINE_SIZE_MASK 0x00000C00
		#define DC_DV_LINE_SIZE_1024 0x00000000
		#define DC_DV_LINE_SIZE_2048 0x00000400
		#define DC_DV_LINE_SIZE_4096 0x00000800
		#define DC_DV_LINE_SIZE_8192 0x00000C00


		#define DC_GFX_SCALE 0x90
		#define DC_IRQ_FILT_CTL 0x94


		#define DC_IRQ 0xC8
		#define DC_IRQ_MASK (1 << 0)
		#define DC_VSYNC_IRQ_MASK (1 << 1)
		#define DC_IRQ_STATUS (1 << 20)
		#define DC_VSYNC_IRQ_STATUS (1 << 21)

		#define DC_GENLCK_CTRL 0xD4
		#define DC_GENLCK_ENABLE (1 << 18)
		#define DC_GC_ALPHA_FLICK_ENABLE (1 << 25)
		#define DC_GC_FLICKER_FILTER_ENABLE (1 << 24)
		#define DC_GC_FLICKER_FILTER_MASK (0x0F << 28)

		#define DC_COLOR_KEY 0xB8
		#define DC_CLR_KEY_ENABLE (1 << 24)


		#define DC3_DV_LINE_SIZE_MASK 0x00000C00
		#define DC3_DV_LINE_SIZE_1024 0x00000000
		#define DC3_DV_LINE_SIZE_2048 0x00000400
		#define DC3_DV_LINE_SIZE_4096 0x00000800
		#define DC3_DV_LINE_SIZE_8192 0x00000C00

		#define DF_VIDEO_CFG 0x0
		#define DF_VCFG_VID_EN (1 << 0)

		#define DF_DISPLAY_CFG 0x08

		#define DF_DCFG_CRT_EN (1 << 0)
		#define DF_DCFG_HSYNC_EN (1 << 1)
		#define DF_DCFG_VSYNC_EN (1 << 2)
		#define DF_DCFG_DAC_BL_EN (1 << 3)
		#define DF_DCFG_CRT_HSYNC_POL (1 << 8)
		#define DF_DCFG_CRT_VSYNC_POL (1 << 9)
		#define DF_DCFG_GV_PAL_BYP (1 << 21)

		#define DF_DCFG_CRT_SYNC_SKW_INIT 0x10000
		#define DF_DCFG_CRT_SYNC_SKW_MASK 0x1c000

		#define DF_DCFG_PWR_SEQ_DLY_INIT 0x80000
		#define DF_DCFG_PWR_SEQ_DLY_MASK 0xe0000

		#define DF_MISC 0x50

		#define DF_MISC_GAM_BYPASS (1 << 0)
		#define DF_MISC_DAC_PWRDN (1 << 10)
		#define DF_MISC_A_PWRDN (1 << 11)

		#define DF_PAR 0x38
		#define DF_PDR 0x40
		#define DF_ALPHA_CONTROL_1 0xD8
		#define DF_VIDEO_REQUEST 0x120

		#define DF_PANEL_TIM1 0x400
		#define DF_DEFAULT_TFT_PMTIM1 0x0

		#define DF_PANEL_TIM2 0x408
		#define DF_DEFAULT_TFT_PMTIM2 0x08000000

		#define DF_FP_PM 0x410
		#define DF_FP_PM_P (1 << 24)

		#define DF_DITHER_CONTROL 0x418
		#define DF_DEFAULT_TFT_DITHCTL 0x00000070
		#define GP_BLT_STATUS 0x44
		#define GP_BS_BLT_BUSY (1 << 0)
		#define GP_BS_CB_EMPTY (1 << 4)

		#endif

drivers/video/geode/lxfb_core.c

0 → 100644

+621 −0

Original line number	Diff line number	Diff line
		/*
		* Geode LX framebuffer driver.
		*
		* Copyright (C) 2007 Advanced Micro Devices, Inc.
		* Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)
		*
		* This program is free software; you can redistribute it and/or modify it
		* under the terms of the GNU General Public License as published by the
		* Free Software Foundation; either version 2 of the License, or (at your
		* option) any later version.
		*/

		#include <linux/module.h>
		#include <linux/kernel.h>
		#include <linux/errno.h>
		#include <linux/string.h>
		#include <linux/console.h>
		#include <linux/mm.h>
		#include <linux/slab.h>
		#include <linux/delay.h>
		#include <linux/fb.h>
		#include <linux/init.h>
		#include <linux/pci.h>
		#include <linux/uaccess.h>

		#include "lxfb.h"

		static char *mode_option;
		static int noclear, nopanel, nocrt;
		static int fbsize;

		/* Most of these modes are sorted in ascending order, but
		* since the first entry in this table is the "default" mode,
		* we try to make it something sane - 640x480-60 is sane
		*/

		const struct fb_videomode geode_modedb[] __initdata = {
		/* 640x480-60 */
		{ NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 640x400-70 */
		{ NULL, 70, 640, 400, 39770, 40, 8, 28, 5, 96, 2,
		FB_SYNC_HOR_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 640x480-70 */
		{ NULL, 70, 640, 480, 35014, 88, 24, 15, 2, 64, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 640x480-72 */
		{ NULL, 72, 640, 480, 32102, 120, 16, 20, 1, 40, 3,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 640x480-75 */
		{ NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 640x480-85 */
		{ NULL, 85, 640, 480, 27780, 80, 56, 25, 1, 56, 3,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 640x480-90 */
		{ NULL, 90, 640, 480, 26392, 96, 32, 22, 1, 64, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 640x480-100 */
		{ NULL, 100, 640, 480, 23167, 104, 40, 25, 1, 64, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 640x480-60 */
		{ NULL, 60, 640, 480, 39682, 48, 16, 25, 10, 88, 2,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-56 */
		{ NULL, 56, 800, 600, 27901, 128, 24, 22, 1, 72, 2,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-60 */
		{ NULL, 60, 800, 600, 25131, 72, 32, 23, 1, 136, 4,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-70 */
		{ NULL, 70, 800, 600, 21873, 120, 40, 21, 4, 80, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-72 */
		{ NULL, 72, 800, 600, 20052, 64, 56, 23, 37, 120, 6,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-75 */
		{ NULL, 75, 800, 600, 20202, 160, 16, 21, 1, 80, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-85 */
		{ NULL, 85, 800, 600, 17790, 152, 32, 27, 1, 64, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-90 */
		{ NULL, 90, 800, 600, 16648, 128, 40, 28, 1, 88, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-100 */
		{ NULL, 100, 800, 600, 14667, 136, 48, 27, 1, 88, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 800x600-60 */
		{ NULL, 60, 800, 600, 25131, 88, 40, 23, 1, 128, 4,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 1024x768-60 */
		{ NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 1024x768-70 */
		{ NULL, 70, 1024, 768, 13346, 144, 24, 29, 3, 136, 6,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 1024x768-72 */
		{ NULL, 72, 1024, 768, 12702, 168, 56, 29, 4, 112, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1024x768-75 */
		{ NULL, 75, 1024, 768, 12703, 176, 16, 28, 1, 96, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1024x768-85 */
		{ NULL, 85, 1024, 768, 10581, 208, 48, 36, 1, 96, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1024x768-90 */
		{ NULL, 90, 1024, 768, 9981, 176, 64, 37, 1, 112, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1024x768-100 */
		{ NULL, 100, 1024, 768, 8825, 184, 72, 42, 1, 112, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1024x768-60 */
		{ NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 1152x864-60 */
		{ NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1152x864-70 */
		{ NULL, 70, 1152, 864, 10254, 192, 72, 32, 8, 120, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1152x864-72 */
		{ NULL, 72, 1152, 864, 9866, 200, 72, 33, 7, 128, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1152x864-75 */
		{ NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1152x864-85 */
		{ NULL, 85, 1152, 864, 8357, 200, 72, 37, 3, 128, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1152x864-90 */
		{ NULL, 90, 1152, 864, 7719, 208, 80, 42, 9, 128, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1152x864-100 */
		{ NULL, 100, 1152, 864, 6947, 208, 80, 48, 3, 128, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1152x864-60 */
		{ NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 1280x1024-60 */
		{ NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1280x1024-70 */
		{ NULL, 70, 1280, 1024, 7719, 224, 88, 38, 6, 136, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1280x1024-72 */
		{ NULL, 72, 1280, 1024, 7490, 224, 88, 39, 7, 136, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1280x1024-75 */
		{ NULL, 75, 1280, 1024, 7409, 248, 16, 38, 1, 144, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1280x1024-85 */
		{ NULL, 85, 1280, 1024, 6351, 224, 64, 44, 1, 160, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1280x1024-90 */
		{ NULL, 90, 1280, 1024, 5791, 240, 96, 51, 12, 144, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1280x1024-100 */
		{ NULL, 100, 1280, 1024, 5212, 240, 96, 57, 6, 144, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1280x1024-60 */
		{ NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 1600x1200-60 */
		{ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1600x1200-70 */
		{ NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1600x1200-72 */
		{ NULL, 72, 1600, 1200, 5053, 288, 112, 47, 13, 176, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1600x1200-75 */
		{ NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1600x1200-85 */
		{ NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1600x1200-90 */
		{ NULL, 90, 1600, 1200, 3981, 304, 128, 60, 1, 176, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1600x1200-100 */
		{ NULL, 100, 1600, 1200, 3563, 304, 128, 67, 1, 176, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1600x1200-60 */
		{ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
		FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED, 0 },
		/* 1920x1440-60 */
		{ NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 208, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1920x1440-70 */
		{ NULL, 70, 1920, 1440, 3593, 360, 152, 55, 8, 208, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1920x1440-72 */
		{ NULL, 72, 1920, 1440, 3472, 360, 152, 68, 4, 208, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1920x1440-75 */
		{ NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		/* 1920x1440-85 */
		{ NULL, 85, 1920, 1440, 2929, 368, 152, 68, 1, 216, 3,
		0, FB_VMODE_NONINTERLACED, 0 },
		};

		static int lxfb_check_var(struct fb_var_screeninfo var, struct fb_info info)
		{
		if (var->xres > 1920 \|\| var->yres > 1440)
		return -EINVAL;

		if (var->bits_per_pixel == 32) {
		var->red.offset = 16; var->red.length = 8;
		var->green.offset = 8; var->green.length = 8;
		var->blue.offset = 0; var->blue.length = 8;
		} else if (var->bits_per_pixel == 16) {
		var->red.offset = 11; var->red.length = 5;
		var->green.offset = 5; var->green.length = 6;
		var->blue.offset = 0; var->blue.length = 5;
		} else if (var->bits_per_pixel == 8) {
		var->red.offset = 0; var->red.length = 8;
		var->green.offset = 0; var->green.length = 8;
		var->blue.offset = 0; var->blue.length = 8;
		} else
		return -EINVAL;

		var->transp.offset = 0; var->transp.length = 0;

		/* Enough video memory? */
		if ((lx_get_pitch(var->xres, var->bits_per_pixel) * var->yres)
		> info->fix.smem_len)
		return -EINVAL;

		return 0;
		}

		static int lxfb_set_par(struct fb_info *info)
		{
		if (info->var.bits_per_pixel > 8) {
		info->fix.visual = FB_VISUAL_TRUECOLOR;
		fb_dealloc_cmap(&info->cmap);
		} else {
		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
		fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
		}

		info->fix.line_length = lx_get_pitch(info->var.xres,
		info->var.bits_per_pixel);

		lx_set_mode(info);
		return 0;
		}

		static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
		{
		chan &= 0xffff;
		chan >>= 16 - bf->length;
		return chan << bf->offset;
		}

		static int lxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
		unsigned blue, unsigned transp,
		struct fb_info *info)
		{
		if (info->var.grayscale) {
		/* grayscale = 0.30R + 0.59G + 0.11B /
		red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
		}

		/* Truecolor has hardware independent palette */
		if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
		u32 *pal = info->pseudo_palette;
		u32 v;

		if (regno >= 16)
		return -EINVAL;

		v = chan_to_field(red, &info->var.red);
		v \|= chan_to_field(green, &info->var.green);
		v \|= chan_to_field(blue, &info->var.blue);

		pal[regno] = v;
		} else {
		if (regno >= 256)
		return -EINVAL;

		lx_set_palette_reg(info, regno, red, green, blue);
		}

		return 0;
		}

		static int lxfb_blank(int blank_mode, struct fb_info *info)
		{
		return lx_blank_display(info, blank_mode);
		}


		static int __init lxfb_map_video_memory(struct fb_info *info,
		struct pci_dev *dev)
		{
		struct lxfb_par *par = info->par;
		int ret;

		ret = pci_enable_device(dev);

		if (ret)
		return ret;

		ret = pci_request_region(dev, 0, "lxfb-framebuffer");

		if (ret)
		return ret;

		ret = pci_request_region(dev, 1, "lxfb-gp");

		if (ret)
		return ret;

		ret = pci_request_region(dev, 2, "lxfb-vg");

		if (ret)
		return ret;

		ret = pci_request_region(dev, 3, "lxfb-vip");

		if (ret)
		return ret;

		info->fix.smem_start = pci_resource_start(dev, 0);
		info->fix.smem_len = fbsize ? fbsize : lx_framebuffer_size();

		info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);

		ret = -ENOMEM;

		if (info->screen_base == NULL)
		return ret;

		par->gp_regs = ioremap(pci_resource_start(dev, 1),
		pci_resource_len(dev, 1));

		if (par->gp_regs == NULL)
		return ret;

		par->dc_regs = ioremap(pci_resource_start(dev, 2),
		pci_resource_len(dev, 2));

		if (par->dc_regs == NULL)
		return ret;

		par->df_regs = ioremap(pci_resource_start(dev, 3),
		pci_resource_len(dev, 3));

		if (par->df_regs == NULL)
		return ret;

		writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK);

		writel(info->fix.smem_start & 0xFF000000,
		par->dc_regs + DC_PHY_MEM_OFFSET);

		writel(0, par->dc_regs + DC_UNLOCK);

		dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n",
		info->fix.smem_len / 1024, info->fix.smem_start);

		return 0;
		}

		static struct fb_ops lxfb_ops = {
		.owner = THIS_MODULE,
		.fb_check_var = lxfb_check_var,
		.fb_set_par = lxfb_set_par,
		.fb_setcolreg = lxfb_setcolreg,
		.fb_blank = lxfb_blank,
		/* No HW acceleration for now. */
		.fb_fillrect = cfb_fillrect,
		.fb_copyarea = cfb_copyarea,
		.fb_imageblit = cfb_imageblit,
		};

		static struct fb_info * __init lxfb_init_fbinfo(struct device *dev)
		{
		struct lxfb_par *par;
		struct fb_info *info;

		/* Alloc enough space for the pseudo palette. */
		info = framebuffer_alloc(sizeof(struct lxfb_par) + sizeof(u32) * 16,
		dev);
		if (!info)
		return NULL;

		par = info->par;

		strcpy(info->fix.id, "Geode LX");

		info->fix.type = FB_TYPE_PACKED_PIXELS;
		info->fix.type_aux = 0;
		info->fix.xpanstep = 0;
		info->fix.ypanstep = 0;
		info->fix.ywrapstep = 0;
		info->fix.accel = FB_ACCEL_NONE;

		info->var.nonstd = 0;
		info->var.activate = FB_ACTIVATE_NOW;
		info->var.height = -1;
		info->var.width = -1;
		info->var.accel_flags = 0;
		info->var.vmode = FB_VMODE_NONINTERLACED;

		info->fbops = &lxfb_ops;
		info->flags = FBINFO_DEFAULT;
		info->node = -1;

		info->pseudo_palette = (void *)par + sizeof(struct lxfb_par);

		info->var.grayscale = 0;

		return info;
		}

		static int __init lxfb_probe(struct pci_dev *pdev,
		const struct pci_device_id *id)
		{
		struct lxfb_par *par;
		struct fb_info *info;
		int ret;

		struct fb_videomode *modedb_ptr;
		int modedb_size;

		info = lxfb_init_fbinfo(&pdev->dev);

		if (info == NULL)
		return -ENOMEM;

		par = info->par;

		ret = lxfb_map_video_memory(info, pdev);

		if (ret < 0) {
		dev_err(&pdev->dev,
		"failed to map frame buffer or controller registers\n");
		goto err;
		}

		/* Set up the desired outputs */

		par->output = 0;
		par->output \|= (nopanel) ? 0 : OUTPUT_PANEL;
		par->output \|= (nocrt) ? 0 : OUTPUT_CRT;

		/* Set up the mode database */

		modedb_ptr = (struct fb_videomode *) geode_modedb;
		modedb_size = ARRAY_SIZE(geode_modedb);

		ret = fb_find_mode(&info->var, info, mode_option,
		modedb_ptr, modedb_size, NULL, 16);

		if (ret == 0 \|\| ret == 4) {
		dev_err(&pdev->dev, "could not find valid video mode\n");
		ret = -EINVAL;
		goto err;
		}

		/* Clear the screen of garbage, unless noclear was specified,
		* in which case we assume the user knows what he is doing */

		if (!noclear)
		memset_io(info->screen_base, 0, info->fix.smem_len);

		/* Set the mode */

		lxfb_check_var(&info->var, info);
		lxfb_set_par(info);

		if (register_framebuffer(info) < 0) {
		ret = -EINVAL;
		goto err;
		}
		pci_set_drvdata(pdev, info);
		printk(KERN_INFO "fb%d: %s frame buffer device\n",
		info->node, info->fix.id);

		return 0;

		err:
		if (info->screen_base) {
		iounmap(info->screen_base);
		pci_release_region(pdev, 0);
		}
		if (par->gp_regs) {
		iounmap(par->gp_regs);
		pci_release_region(pdev, 1);
		}
		if (par->dc_regs) {
		iounmap(par->dc_regs);
		pci_release_region(pdev, 2);
		}
		if (par->df_regs) {
		iounmap(par->df_regs);
		pci_release_region(pdev, 3);
		}

		if (info)
		framebuffer_release(info);

		return ret;
		}

		static void lxfb_remove(struct pci_dev *pdev)
		{
		struct fb_info *info = pci_get_drvdata(pdev);
		struct lxfb_par *par = info->par;

		unregister_framebuffer(info);

		iounmap(info->screen_base);
		pci_release_region(pdev, 0);

		iounmap(par->gp_regs);
		pci_release_region(pdev, 1);

		iounmap(par->dc_regs);
		pci_release_region(pdev, 2);

		iounmap(par->df_regs);
		pci_release_region(pdev, 3);

		pci_set_drvdata(pdev, NULL);
		framebuffer_release(info);
		}

		static struct pci_device_id lxfb_id_table[] = {
		{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
		{ 0, }
		};

		MODULE_DEVICE_TABLE(pci, lxfb_id_table);

		static struct pci_driver lxfb_driver = {
		.name = "lxfb",
		.id_table = lxfb_id_table,
		.probe = lxfb_probe,
		.remove = lxfb_remove,
		};

		#ifndef MODULE
		static int __init lxfb_setup(char *options)
		{
		char *opt;

		if (!options \|\| !*options)
		return 0;

		while (1) {
		char *opt = strsep(&options, ",");

		if (opt == NULL)
		break;

		if (!*opt)
		continue;

		if (!strncmp(opt, "fbsize:", 7))
		fbsize = simple_strtoul(opt+7, NULL, 0);
		else if (!strcmp(opt, "noclear"))
		noclear = 1;
		else if (!strcmp(opt, "nopanel"))
		nopanel = 1;
		else if (!strcmp(opt, "nocrt"))
		nocrt = 1;
		else
		mode_option = opt;
		}

		return 0;
		}
		#endif

		static int __init lxfb_init(void)
		{
		#ifndef MODULE
		char *option = NULL;

		if (fb_get_options("lxfb", &option))
		return -ENODEV;

		lxfb_setup(option);
		#endif
		return pci_register_driver(&lxfb_driver);
		}
		static void __exit lxfb_cleanup(void)
		{
		pci_unregister_driver(&lxfb_driver);
		}

		module_init(lxfb_init);
		module_exit(lxfb_cleanup);

		module_param(mode_option, charp, 0);
		MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");

		module_param(fbsize, int, 0);
		MODULE_PARM_DESC(fbsize, "video memory size");

		MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX");
		MODULE_LICENSE("GPL");

drivers/video/geode/lxfb_ops.c

0 → 100644

+536 −0

File added.

Preview size limit exceeded, changes collapsed.