path: root/packages/linux/linux-rp-2.6.24/tosa/0009-FB-driver-for-TMIO-devices.patch

From 519d015892ab0a7cad1f6b26fcd38117171384ce Mon Sep 17 00:00:00 2001
From: Ian Molton <spyro@f2s.com>
Date: Tue, 1 Jan 2008 21:22:23 +0000
Subject: [PATCH 09/64] FB driver for TMIO devices

---
 drivers/video/Kconfig  |   22 +
 drivers/video/Makefile |    1 +
 drivers/video/tmiofb.c | 1062 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 1085 insertions(+), 0 deletions(-)
 create mode 100644 drivers/video/tmiofb.c

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 5b3dbcf..6d0df58 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -1782,6 +1782,28 @@ config FB_W100
 
 	  If unsure, say N.
 
+config FB_TMIO
+	tristate "Toshiba Mobice IO FrameBuffer support"
+	depends on FB && MFD_CORE
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	---help---
+	  Frame buffer driver for the Toshiba Mobile IO integrated as found
+	  on the Sharp SL-6000 series
+
+	  This driver is also available as a module ( = code which can be
+	  inserted and removed from the running kernel whenever you want). The
+	  module will be called tmiofb. If you want to compile it as a module,
+	  say M here and read <file:Documentation/kbuild/modules.txt>.
+
+	  If unsure, say N.
+
+config FB_TMIO_ACCELL
+	bool "tmiofb acceleration"
+	depends on FB_TMIO
+	default y
+
 config FB_S3C2410
 	tristate "S3C2410 LCD framebuffer support"
 	depends on FB && ARCH_S3C2410
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 83e02b3..74e9384 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -97,6 +97,7 @@ obj-$(CONFIG_FB_CIRRUS)		  += cirrusfb.o
 obj-$(CONFIG_FB_ASILIANT)	  += asiliantfb.o
 obj-$(CONFIG_FB_PXA)		  += pxafb.o
 obj-$(CONFIG_FB_W100)		  += w100fb.o
+obj-$(CONFIG_FB_TMIO)		  += tmiofb.o
 obj-$(CONFIG_FB_AU1100)		  += au1100fb.o
 obj-$(CONFIG_FB_AU1200)		  += au1200fb.o
 obj-$(CONFIG_FB_PMAG_AA)	  += pmag-aa-fb.o
diff --git a/drivers/video/tmiofb.c b/drivers/video/tmiofb.c
new file mode 100644
index 0000000..6b963a1
--- /dev/null
+++ b/drivers/video/tmiofb.c
@@ -0,0 +1,1062 @@
+/*
+ * Frame Buffer Device for Toshiba Mobile IO(TMIO) controller
+ *
+ * Copyright(C) 2005-2006 Chris Humbert
+ * Copyright(C) 2005 Dirk Opfer
+ *
+ * Based on:
+ *	drivers/video/w100fb.c
+ *	code written by Sharp/Lineo for 2.4 kernels
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mfd-core.h>
+#include <linux/mfd/tmio.h>
+#include <linux/fb.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+/* Why should fb driver call console functions? because acquire_console_sem() */
+#include <linux/console.h>
+#include <linux/uaccess.h>
+#include <linux/vmalloc.h>
+
+/*
+ * accelerator commands
+ */
+#define TMIOFB_ACC_CSADR(x)	(0x00000000 | ((x) & 0x001ffffe))
+#define TMIOFB_ACC_CHPIX(x)	(0x01000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_CVPIX(x)	(0x02000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_PSADR(x)	(0x03000000 | ((x) & 0x00fffffe))
+#define TMIOFB_ACC_PHPIX(x)	(0x04000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_PVPIX(x)	(0x05000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_PHOFS(x)	(0x06000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_PVOFS(x)	(0x07000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_POADR(x)	(0x08000000 | ((x) & 0x00fffffe))
+#define TMIOFB_ACC_RSTR(x)	(0x09000000 | ((x) & 0x000000ff))
+#define TMIOFB_ACC_TCLOR(x)	(0x0A000000 | ((x) & 0x0000ffff))
+#define TMIOFB_ACC_FILL(x)	(0x0B000000 | ((x) & 0x0000ffff))
+#define TMIOFB_ACC_DSADR(x)	(0x0C000000 | ((x) & 0x00fffffe))
+#define TMIOFB_ACC_SSADR(x)	(0x0D000000 | ((x) & 0x00fffffe))
+#define TMIOFB_ACC_DHPIX(x)	(0x0E000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_DVPIX(x)	(0x0F000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_SHPIX(x)	(0x10000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_SVPIX(x)	(0x11000000 | ((x) & 0x000003ff))
+#define TMIOFB_ACC_LBINI(x)	(0x12000000 | ((x) & 0x0000ffff))
+#define TMIOFB_ACC_LBK2(x)	(0x13000000 | ((x) & 0x0000ffff))
+#define TMIOFB_ACC_SHBINI(x)	(0x14000000 | ((x) & 0x0000ffff))
+#define TMIOFB_ACC_SHBK2(x)	(0x15000000 | ((x) & 0x0000ffff))
+#define TMIOFB_ACC_SVBINI(x)	(0x16000000 | ((x) & 0x0000ffff))
+#define TMIOFB_ACC_SVBK2(x)	(0x17000000 | ((x) & 0x0000ffff))
+
+#define	TMIOFB_ACC_CMGO		0x20000000
+#define	TMIOFB_ACC_CMGO_CEND	0x00000001
+#define	TMIOFB_ACC_CMGO_INT	0x00000002
+#define	TMIOFB_ACC_CMGO_CMOD	0x00000010
+#define	TMIOFB_ACC_CMGO_CDVRV	0x00000020
+#define	TMIOFB_ACC_CMGO_CDHRV	0x00000040
+#define	TMIOFB_ACC_CMGO_RUND	0x00008000
+#define	TMIOFB_ACC_SCGO		0x21000000
+#define	TMIOFB_ACC_SCGO_CEND	0x00000001
+#define	TMIOFB_ACC_SCGO_INT	0x00000002
+#define	TMIOFB_ACC_SCGO_ROP3	0x00000004
+#define	TMIOFB_ACC_SCGO_TRNS	0x00000008
+#define	TMIOFB_ACC_SCGO_DVRV	0x00000010
+#define	TMIOFB_ACC_SCGO_DHRV	0x00000020
+#define	TMIOFB_ACC_SCGO_SVRV	0x00000040
+#define	TMIOFB_ACC_SCGO_SHRV	0x00000080
+#define	TMIOFB_ACC_SCGO_DSTXY	0x00008000
+#define	TMIOFB_ACC_SBGO		0x22000000
+#define	TMIOFB_ACC_SBGO_CEND	0x00000001
+#define	TMIOFB_ACC_SBGO_INT	0x00000002
+#define	TMIOFB_ACC_SBGO_DVRV	0x00000010
+#define	TMIOFB_ACC_SBGO_DHRV	0x00000020
+#define	TMIOFB_ACC_SBGO_SVRV	0x00000040
+#define	TMIOFB_ACC_SBGO_SHRV	0x00000080
+#define	TMIOFB_ACC_SBGO_SBMD	0x00000100
+#define	TMIOFB_ACC_FLGO		0x23000000
+#define	TMIOFB_ACC_FLGO_CEND	0x00000001
+#define	TMIOFB_ACC_FLGO_INT	0x00000002
+#define	TMIOFB_ACC_FLGO_ROP3	0x00000004
+#define	TMIOFB_ACC_LDGO		0x24000000
+#define	TMIOFB_ACC_LDGO_CEND	0x00000001
+#define	TMIOFB_ACC_LDGO_INT	0x00000002
+#define	TMIOFB_ACC_LDGO_ROP3	0x00000004
+#define	TMIOFB_ACC_LDGO_ENDPX	0x00000008
+#define	TMIOFB_ACC_LDGO_LVRV	0x00000010
+#define	TMIOFB_ACC_LDGO_LHRV	0x00000020
+#define	TMIOFB_ACC_LDGO_LDMOD	0x00000040
+
+/* a FIFO is always allocated, even if acceleration is not used */
+#define TMIOFB_FIFO_SIZE	512
+
+/*
+ * LCD Host Controller Configuration Register
+ *
+ * This iomem area supports only 16-bit IO.
+ */
+struct tmio_lhccr {
+	u16 x00[2];
+	u16	cmd;		/* 0x04 Command				*/
+	u16 x01;
+	u16	revid;		/* 0x08 Revision ID			*/
+	u16 x02[3];
+	u16	basel;		/* 0x10 LCD Control Reg Base Addr Low	*/
+	u16	baseh;		/* 0x12 LCD Control Reg Base Addr High	*/
+	u16 x03[0x16];
+	u16	ugcc;		/* 0x40 Unified Gated Clock Control	*/
+	u16	gcc;		/* 0x42 Gated Clock Control		*/
+	u16 x04[6];
+	u16	usc;		/* 0x50 Unified Software Clear		*/
+	u16 x05[7];
+	u16	vramrtc;	/* 0x60 VRAM Timing Control		*/
+				/* 0x61 VRAM Refresh Control		*/
+	u16	vramsac;	/* 0x62 VRAM Access Control		*/
+				/* 0x63	VRAM Status			*/
+	u16	vrambc;		/* 0x64 VRAM Block Control		*/
+	u16 x06[0x4d];
+};
+
+/*
+ * LCD Control Register
+ *
+ * This iomem area supports only 16-bit IO.
+ */
+struct tmio_lcr {
+	u16	uis;	/* 0x000 Unified Interrupt Status		*/
+	u16 x00[3];
+	u16	vhpn;	/* 0x008 VRAM Horizontal Pixel Number		*/
+	u16	cfsal;	/* 0x00a Command FIFO Start Address Low		*/
+	u16	cfsah;	/* 0x00c Command FIFO Start Address High	*/
+	u16	cfs;	/* 0x00e Command FIFO Size			*/
+	u16	cfws;	/* 0x010 Command FIFO Writeable Size		*/
+	u16	bbie;	/* 0x012 BitBLT Interrupt Enable		*/
+	u16	bbisc;	/* 0x014 BitBLT Interrupt Status and Clear	*/
+	u16	ccs;	/* 0x016 Command Count Status			*/
+	u16	bbes;	/* 0x018 BitBLT Execution Status		*/
+	u16 x01;
+	u16	cmdl;	/* 0x01c Command Low				*/
+	u16	cmdh;	/* 0x01e Command High				*/
+	u16 x02;
+	u16	cfc;	/* 0x022 Command FIFO Clear			*/
+	u16	ccifc;	/* 0x024 CMOS Camera IF Control			*/
+	u16	hwt;	/* 0x026 Hardware Test				*/
+	u16 x03[0x6c];
+	u16	lcdccrc;/* 0x100 LCDC Clock and Reset Control		*/
+	u16	lcdcc;	/* 0x102 LCDC Control				*/
+	u16	lcdcopc;/* 0x104 LCDC Output Pin Control		*/
+	u16 x04;
+	u16	lcdis;	/* 0x108 LCD Interrupt Status			*/
+	u16	lcdim;	/* 0x10a LCD Interrupt Mask			*/
+	u16	lcdie;	/* 0x10c LCD Interrupt Enable			*/
+	u16 x05[10];
+	u16	gdsal;	/* 0x122 Graphics Display Start Address Low	*/
+	u16	gdsah;	/* 0x124 Graphics Display Start Address High	*/
+	u16 x06[2];
+	u16	vhpcl;	/* 0x12a VRAM Horizontal Pixel Count Low	*/
+	u16	vhpch;	/* 0x12c VRAM Horizontal Pixel Count High	*/
+	u16	gm;	/* 0x12e Graphic Mode(VRAM access enable)	*/
+	u16 x07[8];
+	u16	ht;	/* 0x140 Horizontal Total			*/
+	u16	hds;	/* 0x142 Horizontal Display Start		*/
+	u16	hss;	/* 0x144 H-Sync Start				*/
+	u16	hse;	/* 0x146 H-Sync End				*/
+	u16 x08[2];
+	u16	hnp;	/* 0x14c Horizontal Number of Pixels		*/
+	u16 x09;
+	u16	vt;	/* 0x150 Vertical Total				*/
+	u16	vds;	/* 0x152 Vertical Display Start			*/
+	u16	vss;	/* 0x154 V-Sync Start				*/
+	u16	vse;	/* 0x156 V-Sync End				*/
+	u16 x0a[4];
+	u16	cdln;	/* 0x160 Current Display Line Number		*/
+	u16	iln;	/* 0x162 Interrupt Line Number			*/
+	u16	sp;	/* 0x164 Sync Polarity				*/
+	u16	misc;	/* 0x166 MISC(RGB565 mode)			*/
+	u16 x0b;
+	u16	vihss;	/* 0x16a Video Interface H-Sync Start		*/
+	u16	vivs;	/* 0x16c Video Interface Vertical Start		*/
+	u16	vive;	/* 0x16e Video Interface Vertical End		*/
+	u16	vivss;	/* 0x170 Video Interface V-Sync Start		*/
+	u16 x0c[6];
+	u16	vccis;	/* 0x17e Video / CMOS Camera Interface Select	*/
+	u16	vidwsal;/* 0x180 VI Data Write Start Address Low	*/
+	u16	vidwsah;/* 0x182 VI Data Write Start Address High	*/
+	u16	vidrsal;/* 0x184 VI Data Read Start Address Low		*/
+	u16	vidrsah;/* 0x186 VI Data Read Start Address High	*/
+	u16	vipddst;/* 0x188 VI Picture Data Display Start Timing	*/
+	u16	vipddet;/* 0x186 VI Picture Data Display End Timing	*/
+	u16	vie;	/* 0x18c Video Interface Enable			*/
+	u16	vcs;	/* 0x18e Video/Camera Select			*/
+	u16 x0d[2];
+	u16	vphwc;	/* 0x194 Video Picture Horizontal Wait Count	*/
+	u16	vphs;	/* 0x196 Video Picture Horizontal Size		*/
+	u16	vpvwc;	/* 0x198 Video Picture Vertical Wait Count	*/
+	u16	vpvs;	/* 0x19a Video Picture Vertical Size		*/
+	u16 x0e[2];
+	u16	plhpix;	/* 0x1a0 PLHPIX					*/
+	u16	xs;	/* 0x1a2 XStart					*/
+	u16	xckhw;	/* 0x1a4 XCK High Width				*/
+	u16 x0f;
+	u16	sths;	/* 0x1a8 STH Start				*/
+	u16	vt2;	/* 0x1aa Vertical Total				*/
+	u16	ycksw;	/* 0x1ac YCK Start Wait				*/
+	u16	ysts;	/* 0x1ae YST Start				*/
+	u16	ppols;	/* 0x1b0 #PPOL Start				*/
+	u16	precw;	/* 0x1b2 PREC Width				*/
+	u16	vclkhw;	/* 0x1b4 VCLK High Width			*/
+	u16	oc;	/* 0x1b6 Output Control				*/
+	u16 x10[0x24];
+};
+static char *mode_option __devinitdata;
+
+struct tmiofb_par {
+	u32				pseudo_palette[16];
+
+#ifdef CONFIG_FB_TMIO_ACCELL
+	wait_queue_head_t		wait_acc;
+	bool				use_polling;
+#endif
+
+	struct tmio_lhccr __iomem	*ccr;
+	struct tmio_lcr __iomem		*lcr;
+	void __iomem			*vram;
+};
+
+/*--------------------------------------------------------------------------*/
+
+static irqreturn_t tmiofb_irq(int irq, void *__info);
+
+/*--------------------------------------------------------------------------*/
+
+
+/*
+ * Turns off the LCD controller and LCD host controller.
+ */
+static int tmiofb_hw_stop(struct platform_device *dev)
+{
+	struct mfd_cell			*cell	= mfd_get_cell(dev);
+	struct tmio_fb_data		*data	= cell->driver_data;
+	struct fb_info			*info	= platform_get_drvdata(dev);
+	struct tmiofb_par		*par	= info->par;
+	struct tmio_lhccr __iomem 	*ccr	= par->ccr;
+	struct tmio_lcr __iomem 	*lcr	= par->lcr;
+
+	iowrite16(0,		&ccr->ugcc);
+	iowrite16(0,		&lcr->gm);
+	data->lcd_set_power(dev, 0);
+	iowrite16(0x0010,	&lcr->lcdccrc);
+
+	return 0;
+}
+
+/*
+ * Initializes the LCD host controller.
+ */
+static int tmiofb_hw_init(struct platform_device *dev)
+{
+	struct mfd_cell			*cell	= mfd_get_cell(dev);
+	struct tmio_fb_data		*data	= cell->driver_data;
+	struct fb_info			*info	= platform_get_drvdata(dev);
+	struct tmiofb_par		*par	= info->par;
+	struct tmio_lhccr __iomem 	*ccr	= par->ccr;
+	struct tmio_lcr __iomem 	*lcr	= par->lcr;
+	const struct resource		*nlcr	= NULL;
+	const struct resource		*vram	= NULL;
+	unsigned long			base;
+	int				i;
+
+	for (i = 0; i < cell->num_resources; i++) {
+		if (!strcmp((cell->resources+i)->name, TMIO_FB_CONTROL))
+			nlcr = &cell->resources[i];
+		if (!strcmp((cell->resources+i)->name, TMIO_FB_VRAM))
+			vram = &cell->resources[i];
+	}
+
+	if (nlcr == NULL || vram == NULL)
+		return -EINVAL;
+
+	base = nlcr->start;
+
+	if (info->mode == NULL) {
+		printk(KERN_ERR "tmio-fb: null info->mode\n");
+		info->mode = data->modes;
+	}
+
+	data->lcd_mode(dev, info->mode);
+
+	iowrite16(0x003a,	&ccr->ugcc);
+	iowrite16(0x003a,	&ccr->gcc);
+	iowrite16(0x3f00,	&ccr->usc);
+
+	data->lcd_set_power(dev, 1);
+	mdelay(2);
+
+	iowrite16(0x0000,	&ccr->usc);
+	iowrite16(base >> 16,	&ccr->baseh);
+	iowrite16(base,	&ccr->basel);
+	iowrite16(0x0002,	&ccr->cmd);	/* base address enable	*/
+	iowrite16(0x40a8,	&ccr->vramrtc);	/* VRAMRC, VRAMTC	*/
+	iowrite16(0x0018,	&ccr->vramsac);	/* VRAMSTS, VRAMAC	*/
+	iowrite16(0x0002,	&ccr->vrambc);
+	mdelay(2);
+	iowrite16(0x000b,	&ccr->vrambc);
+
+	base = vram->start + info->screen_size;
+	iowrite16(base >> 16,			&lcr->cfsah);
+	iowrite16(base,				&lcr->cfsal);
+	iowrite16(TMIOFB_FIFO_SIZE - 1,		&lcr->cfs);
+	iowrite16(1,				&lcr->cfc);
+	iowrite16(1,				&lcr->bbie);
+	iowrite16(0,				&lcr->cfws);
+
+	return 0;
+}
+
+/*
+ * Sets the LCD controller's output resolution and pixel clock
+ */
+static void tmiofb_hw_mode(struct platform_device *dev)
+{
+	struct mfd_cell			*cell	= mfd_get_cell(dev);
+	struct tmio_fb_data		*data	= cell->driver_data;
+	struct fb_info			*info	= platform_get_drvdata(dev);
+	struct fb_videomode		*mode	= info->mode;
+	struct tmiofb_par		*par	= info->par;
+	struct tmio_lcr __iomem 	*lcr	= par->lcr;
+	unsigned int			i;
+
+	iowrite16(0,				&lcr->gm);
+	data->lcd_set_power(dev, 0);
+	iowrite16(0x0010,			&lcr->lcdccrc);
+	data->lcd_mode(dev, mode);
+	data->lcd_set_power(dev, 1);
+
+	iowrite16(i = mode->xres * 2,		&lcr->vhpn);
+	iowrite16(0,				&lcr->gdsah);
+	iowrite16(0,				&lcr->gdsal);
+	iowrite16(i >> 16,			&lcr->vhpch);
+	iowrite16(i,				&lcr->vhpcl);
+	iowrite16(i = 0,			&lcr->hss);
+	iowrite16(i += mode->hsync_len,	&lcr->hse);
+	iowrite16(i += mode->left_margin,	&lcr->hds);
+	iowrite16(i += mode->xres + mode->right_margin,	&lcr->ht);
+	iowrite16(mode->xres,			&lcr->hnp);
+	iowrite16(i = 0,			&lcr->vss);
+	iowrite16(i += mode->vsync_len,	&lcr->vse);
+	iowrite16(i += mode->upper_margin,	&lcr->vds);
+	iowrite16(i += mode->yres,		&lcr->iln);
+	iowrite16(i += mode->lower_margin,	&lcr->vt);
+	iowrite16(3,	/* RGB565 mode */	&lcr->misc);
+	iowrite16(1,	/* VRAM enable */	&lcr->gm);
+	iowrite16(0x4007,			&lcr->lcdcc);
+	iowrite16(3,	 /* sync polarity */	&lcr->sp);
+
+	iowrite16(0x0010,	&lcr->lcdccrc);
+	mdelay(5);
+	iowrite16(0x0014,	&lcr->lcdccrc);	/* STOP_CKP */
+	mdelay(5);
+	iowrite16(0x0015,	&lcr->lcdccrc);	/* STOP_CKP | SOFT_RESET */
+	iowrite16(0xfffa,	&lcr->vcs);
+}
+
+/*--------------------------------------------------------------------------*/
+
+#ifdef CONFIG_FB_TMIO_ACCELL
+static int __must_check
+tmiofb_acc_wait(struct fb_info *info, unsigned int ccs)
+{
+	struct tmiofb_par		*par	= info->par;
+	struct tmio_lcr __iomem		*lcr	= par->lcr;
+	if (in_atomic() || par->use_polling) {
+		int i = 0;
+		while (ioread16(&lcr->ccs) > ccs) {
+			udelay(1);
+			i++;
+			if (i > 10000) {
+				printk(KERN_ERR "tmiofb: timeout waiting for %d\n", ccs);
+				return -ETIMEDOUT;
+			}
+			tmiofb_irq(-1, info);
+		}
+	} else {
+		if (!wait_event_interruptible_timeout(par->wait_acc,
+				ioread16(&par->lcr->ccs) <= ccs, 1000)) {
+			printk(KERN_ERR "tmiofb: timeout waiting for %d\n", ccs);
+			return -ETIMEDOUT;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Writes an accelerator command to the accelerator's FIFO.
+ */
+static int
+tmiofb_acc_write(struct fb_info *info, const u32 *cmd, unsigned int count)
+{
+	struct tmiofb_par		*par	= info->par;
+	struct tmio_lcr __iomem		*lcr	= par->lcr;
+	int ret;
+
+	ret = tmiofb_acc_wait(info, TMIOFB_FIFO_SIZE - count);
+	if (ret)
+		return ret;
+
+	for (; count; count--, cmd++) {
+		iowrite16(*cmd >> 16,	&lcr->cmdh);
+		iowrite16(*cmd,	&lcr->cmdl);
+	}
+
+	return ret;
+}
+
+/*
+ * Wait for the accelerator to finish its operations before writing
+ * to the framebuffer for consistent display output.
+ */
+static int tmiofb_sync(struct fb_info *fbi)
+{
+	struct tmiofb_par		*par	= fbi->par;
+
+	int ret;
+	int i = 0;
+
+	ret = tmiofb_acc_wait(fbi, 0);
+
+	while (ioread16(&par->lcr->bbes) & 2) {	/* blit active */
+		udelay(1);
+		i++ ;
+		if (i > 10000) {
+			printk(KERN_ERR "timeout waiting for blit to end!\n");
+			return -ETIMEDOUT;
+		}
+	}
+
+	return ret;
+}
+
+static void
+tmiofb_fillrect(struct fb_info *fbi, const struct fb_fillrect *rect)
+{
+	const u32 cmd [] = {
+		TMIOFB_ACC_DSADR((rect->dy * fbi->mode->xres + rect->dx) * 2),
+		TMIOFB_ACC_DHPIX(rect->width	- 1),
+		TMIOFB_ACC_DVPIX(rect->height	- 1),
+		TMIOFB_ACC_FILL(rect->color),
+		TMIOFB_ACC_FLGO,
+	};
+
+	if (fbi->state != FBINFO_STATE_RUNNING ||
+	    fbi->flags & FBINFO_HWACCEL_DISABLED) {
+		cfb_fillrect(fbi, rect);
+		return;
+	}
+
+	tmiofb_acc_write(fbi, cmd, ARRAY_SIZE(cmd));
+}
+
+static void
+tmiofb_copyarea(struct fb_info *fbi, const struct fb_copyarea *area)
+{
+	const u32 cmd [] = {
+		TMIOFB_ACC_DSADR((area->dy * fbi->mode->xres + area->dx) * 2),
+		TMIOFB_ACC_DHPIX(area->width	- 1),
+		TMIOFB_ACC_DVPIX(area->height	- 1),
+		TMIOFB_ACC_SSADR((area->sy * fbi->mode->xres + area->sx) * 2),
+		TMIOFB_ACC_SCGO,
+	};
+
+	if (fbi->state != FBINFO_STATE_RUNNING ||
+	    fbi->flags & FBINFO_HWACCEL_DISABLED) {
+		cfb_copyarea(fbi, area);
+		return;
+	}
+
+	tmiofb_acc_write(fbi, cmd, ARRAY_SIZE(cmd));
+}
+#endif
+
+static void tmiofb_clearscreen(struct fb_info *info)
+{
+	const struct fb_fillrect rect = {
+		.dx	= 0,
+		.dy	= 0,
+		.width	= info->mode->xres,
+		.height	= info->mode->yres,
+		.color	= 0,
+	};
+
+	info->fbops->fb_fillrect(info, &rect);
+}
+
+static int tmiofb_vblank(struct fb_info *fbi, struct fb_vblank *vblank)
+{
+	struct tmiofb_par	*par	= fbi->par;
+	struct fb_videomode	*mode	= fbi->mode;
+	unsigned int		vcount	= ioread16(&par->lcr->cdln);
+	unsigned int		vds	= mode->vsync_len + mode->upper_margin;
+
+	vblank->vcount	= vcount;
+	vblank->flags	= FB_VBLANK_HAVE_VBLANK	| FB_VBLANK_HAVE_VCOUNT
+						| FB_VBLANK_HAVE_VSYNC;
+
+	if (vcount < mode->vsync_len)
+		vblank->flags |= FB_VBLANK_VSYNCING;
+
+	if (vcount < vds || vcount > vds + mode->yres)
+		vblank->flags |= FB_VBLANK_VBLANKING;
+
+	return 0;
+}
+
+
+static int tmiofb_ioctl(struct fb_info *fbi,
+		unsigned int cmd, unsigned long arg)
+{
+	switch (cmd) {
+	case FBIOGET_VBLANK: {
+		struct fb_vblank	vblank	= {0};
+		void __user		*argp	= (void __user *) arg;
+
+		tmiofb_vblank(fbi, &vblank);
+		if (copy_to_user(argp, &vblank, sizeof vblank))
+				return -EFAULT;
+		return 0;
+	}
+
+#ifdef CONFIG_FB_TMIO_ACCELL
+	case FBIO_TMIO_ACC_SYNC:
+		tmiofb_sync(fbi);
+		return 0;
+
+	case FBIO_TMIO_ACC_WRITE: {
+		u32 __user	*argp	= (void __user *) arg;
+		u32		len;
+		u32		acc [16];
+
+		if (copy_from_user(&len, argp, sizeof(u32)))
+			return -EFAULT;
+		if (len > ARRAY_SIZE(acc))
+			return -EINVAL;
+		if (copy_from_user(acc, argp + 1, sizeof(u32) * len))
+			return -EFAULT;
+
+		return tmiofb_acc_write(fbi, acc, len);
+	}
+#endif
+	}
+
+	return -EINVAL;
+}
+
+/*--------------------------------------------------------------------------*/
+
+/* Select the smallest mode that allows the desired resolution to be
+ * displayed.  If desired, the x and y parameters can be rounded up to
+ * match the selected mode.
+ */
+static struct fb_videomode*
+tmiofb_find_mode(struct fb_info *info, struct fb_var_screeninfo *var)
+{
+	struct mfd_cell			*cell	= mfd_get_cell(to_platform_device(info->device));
+	struct tmio_fb_data		*data	= cell->driver_data;
+	struct fb_videomode		*best	= NULL;
+	int				i;
+
+	for (i = 0; i < data->num_modes; i++) {
+		struct fb_videomode *mode = data->modes + i;
+
+		if (mode->xres >= var->xres && mode->yres >= var->yres
+				&& (!best || (mode->xres < best->xres
+					   && mode->yres < best->yres)))
+			best = mode;
+	}
+
+	return best;
+}
+
+static int tmiofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+
+	struct fb_videomode	*mode;
+
+	mode = tmiofb_find_mode(info, var);
+	if (!mode || var->bits_per_pixel > 16)
+		return -EINVAL;
+
+	fb_videomode_to_var(var, mode);
+
+	var->xres_virtual	= mode->xres;
+	var->yres_virtual	= info->screen_size / (mode->xres * 2);
+	var->xoffset		= 0;
+	var->yoffset		= 0;
+	var->bits_per_pixel	= 16;
+	var->grayscale		= 0;
+	var->red.offset		= 11;	var->red.length		= 5;
+	var->green.offset	= 5;	var->green.length	= 6;
+	var->blue.offset	= 0;	var->blue.length	= 5;
+	var->transp.offset	= 0;	var->transp.length	= 0;
+	var->nonstd		= 0;
+	var->height		= 82;	/* mm */
+	var->width		= 60;	/* mm */
+	var->rotate		= 0;
+	return 0;
+}
+
+static int tmiofb_set_par(struct fb_info *info)
+{
+/*	struct fb_var_screeninfo	*var	= &info->var;
+	struct fb_videomode		*mode;
+
+	mode = tmiofb_find_mode(info, var);
+	if (!mode)
+		return -EINVAL;
+
+	if (info->mode == mode)
+		return 0;
+
+	info->mode		= mode; */
+	info->fix.line_length	= info->mode->xres * 2;
+
+	tmiofb_hw_mode(to_platform_device(info->device));
+	tmiofb_clearscreen(info);
+	return 0;
+}
+
+static int tmiofb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			   unsigned blue, unsigned transp,
+			   struct fb_info *info)
+{
+	struct tmiofb_par	*par	= info->par;
+
+	if (regno < ARRAY_SIZE(par->pseudo_palette)) {
+		par->pseudo_palette [regno] =
+			((red	& 0xf800))		|
+			((green	& 0xfc00) >>  5)	|
+			((blue	& 0xf800) >> 11);
+		return 0;
+	}
+
+	return 1;
+}
+
+static struct fb_ops tmiofb_ops = {
+	.owner		= THIS_MODULE,
+
+	.fb_ioctl	= tmiofb_ioctl,
+	.fb_check_var	= tmiofb_check_var,
+	.fb_set_par	= tmiofb_set_par,
+	.fb_setcolreg	= tmiofb_setcolreg,
+	.fb_imageblit	= cfb_imageblit,
+#ifdef CONFIG_FB_TMIO_ACCELL
+	.fb_sync	= tmiofb_sync,
+	.fb_fillrect	= tmiofb_fillrect,
+	.fb_copyarea	= tmiofb_copyarea,
+#else
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+#endif
+};
+
+/*--------------------------------------------------------------------------*/
+
+/*
+ * reasons for an interrupt:
+ *	uis	bbisc	lcdis
+ *	0100	0001		accelerator command completed
+ * 	2000		0001	vsync start
+ * 	2000		0002	display start
+ * 	2000		0004	line number match(0x1ff mask???)
+ */
+static irqreturn_t tmiofb_irq(int irq, void *__info)
+{
+	struct fb_info			*info	= __info;
+	struct tmiofb_par		*par	= info->par;
+	struct tmio_lcr __iomem		*lcr	= par->lcr;
+	unsigned int			bbisc	= ioread16(&lcr->bbisc);
+
+
+	if (unlikely(par->use_polling && irq != -1)) {
+		printk(KERN_INFO "tmiofb: switching to waitq\n");
+		par->use_polling = false;
+	}
+
+	iowrite16(bbisc, &lcr->bbisc);
+
+#ifdef CONFIG_FB_TMIO_ACCELL
+	if (bbisc & 1)
+		wake_up(&par->wait_acc);
+#endif
+
+	return IRQ_HANDLED;
+}
+
+static int tmiofb_probe(struct platform_device *dev)
+{
+	struct mfd_cell			*cell	= mfd_get_cell(dev);
+	struct tmio_fb_data		*data	= cell->driver_data;
+	struct resource			*ccr	= platform_get_resource_byname(dev, IORESOURCE_MEM, TMIO_FB_CONFIG);
+	struct resource			*lcr	= platform_get_resource_byname(dev, IORESOURCE_MEM, TMIO_FB_CONTROL);
+	struct resource			*vram	= platform_get_resource_byname(dev, IORESOURCE_MEM, TMIO_FB_VRAM);
+	int				irq	= platform_get_irq(dev, 0);
+	struct fb_info			*info;
+	struct tmiofb_par		*par;
+	int				retval;
+
+	if (data == NULL) {
+		dev_err(&dev->dev, "NULL platform data!\n");
+		return -EINVAL;
+	}
+
+	info = framebuffer_alloc(sizeof(struct tmiofb_par), &dev->dev);
+
+	if (!info) {
+		retval = -ENOMEM;
+		goto err_framebuffer_alloc;
+	}
+
+	par = info->par;
+	platform_set_drvdata(dev, info);
+
+#ifdef CONFIG_FB_TMIO_ACCELL
+	init_waitqueue_head(&par->wait_acc);
+
+	par->use_polling	= true;
+
+	info->flags		= FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA
+						 | FBINFO_HWACCEL_FILLRECT;
+#else
+	info->flags		= FBINFO_DEFAULT;
+#endif
+
+	info->fbops		= &tmiofb_ops;
+
+	strcpy(info->fix.id, "tmio-fb");
+	info->fix.smem_start	= vram->start;
+	info->fix.smem_len	= vram->end - vram->start + 1;
+	info->fix.type		= FB_TYPE_PACKED_PIXELS;
+	info->fix.visual	= FB_VISUAL_TRUECOLOR;
+	info->fix.mmio_start	= lcr->start;
+	info->fix.mmio_len	= lcr->end - lcr->start + 1;
+	info->fix.accel		= FB_ACCEL_NONE;
+	info->screen_size	= info->fix.smem_len - (4 * TMIOFB_FIFO_SIZE);
+	info->pseudo_palette	= par->pseudo_palette;
+
+	par->ccr = ioremap(ccr->start, ccr->end - ccr->start + 1);
+	if (!par->ccr) {
+		retval = -ENOMEM;
+		goto err_ioremap_ccr;
+	}
+
+	par->lcr = ioremap(info->fix.mmio_start, info->fix.mmio_len);
+	if (!par->lcr) {
+		retval = -ENOMEM;
+		goto err_ioremap_lcr;
+	}
+
+	par->vram = ioremap(info->fix.smem_start, info->fix.smem_len);
+	if (!par->vram) {
+		retval = -ENOMEM;
+		goto err_ioremap_vram;
+	}
+	info->screen_base = par->vram;
+
+	retval = request_irq(irq, &tmiofb_irq, IRQF_DISABLED,
+					dev->dev.bus_id, info);
+
+	if (retval)
+		goto err_request_irq;
+
+	retval = fb_find_mode(&info->var, info, mode_option,
+			data->modes, data->num_modes,
+			data->modes, 16);
+	if (!retval) {
+		retval = -EINVAL;
+		goto err_find_mode;
+	}
+
+	retval = cell->enable(dev);
+	if (retval)
+		goto err_enable;
+
+	retval = tmiofb_hw_init(dev);
+	if (retval)
+		goto err_hw_init;
+
+/*	retval = tmiofb_set_par(info);
+	if (retval)
+		goto err_set_par;*/
+
+	retval = register_framebuffer(info);
+	if (retval < 0)
+		goto err_register_framebuffer;
+
+	printk(KERN_INFO "fb%d: %s frame buffer device\n",
+				info->node, info->fix.id);
+
+	return 0;
+
+err_register_framebuffer:
+/*err_set_par:*/
+	tmiofb_hw_stop(dev);
+err_hw_init:
+	cell->disable(dev);
+err_enable:
+err_find_mode:
+	free_irq(irq, info);
+err_request_irq:
+	iounmap(par->vram);
+err_ioremap_vram:
+	iounmap(par->lcr);
+err_ioremap_lcr:
+	iounmap(par->ccr);
+err_ioremap_ccr:
+	platform_set_drvdata(dev, NULL);
+	framebuffer_release(info);
+err_framebuffer_alloc:
+	return retval;
+}
+
+static int __devexit tmiofb_remove(struct platform_device *dev)
+{
+	struct mfd_cell			*cell	= mfd_get_cell(dev);
+	struct fb_info			*info	= platform_get_drvdata(dev);
+	int				irq	= platform_get_irq(dev, 0);
+	struct tmiofb_par		*par;
+
+	if (info) {
+		par = info->par;
+		unregister_framebuffer(info);
+
+		tmiofb_hw_stop(dev);
+
+		cell->disable(dev);
+
+		free_irq(irq, info);
+
+		iounmap(par->vram);
+		iounmap(par->lcr);
+		iounmap(par->ccr);
+
+		framebuffer_release(info);
+		platform_set_drvdata(dev, NULL);
+	}
+
+	return 0;
+}
+
+#if 0
+static void tmiofb_dump_regs(struct platform_device *dev)
+{
+	struct fb_info			*info	= platform_get_drvdata(dev);
+	struct tmiofb_par		*par	= info->par;
+	struct tmio_lhccr __iomem 	*ccr	= par->ccr;
+	struct tmio_lcr __iomem 	*lcr	= par->lcr;
+
+	printk("lhccr:\n");
+#define CCR_PR(n)	printk("\t" #n " = \t%04x\n", ioread16(&ccr->n));
+	CCR_PR(cmd);
+	CCR_PR(revid);
+	CCR_PR(basel);
+	CCR_PR(baseh);
+	CCR_PR(ugcc);
+	CCR_PR(gcc);
+	CCR_PR(usc);
+	CCR_PR(vramrtc);
+	CCR_PR(vramsac);
+	CCR_PR(vrambc);
+#undef CCR_PR
+
+	printk("lcr: \n");
+#define LCR_PR(n)	printk("\t" #n " = \t%04x\n", ioread16(&lcr->n));
+	LCR_PR(uis);
+	LCR_PR(vhpn);
+	LCR_PR(cfsal);
+	LCR_PR(cfsah);
+	LCR_PR(cfs);
+	LCR_PR(cfws);
+	LCR_PR(bbie);
+	LCR_PR(bbisc);
+	LCR_PR(ccs);
+	LCR_PR(bbes);
+	LCR_PR(cmdl);
+	LCR_PR(cmdh);
+	LCR_PR(cfc);
+	LCR_PR(ccifc);
+	LCR_PR(hwt);
+	LCR_PR(lcdccrc);
+	LCR_PR(lcdcc);
+	LCR_PR(lcdcopc);
+	LCR_PR(lcdis);
+	LCR_PR(lcdim);
+	LCR_PR(lcdie);
+	LCR_PR(gdsal);
+	LCR_PR(gdsah);
+	LCR_PR(vhpcl);
+	LCR_PR(vhpch);
+	LCR_PR(gm);
+	LCR_PR(ht);
+	LCR_PR(hds);
+	LCR_PR(hss);
+	LCR_PR(hse);
+	LCR_PR(hnp);
+	LCR_PR(vt);
+	LCR_PR(vds);
+	LCR_PR(vss);
+	LCR_PR(vse);
+	LCR_PR(cdln);
+	LCR_PR(iln);
+	LCR_PR(sp);
+	LCR_PR(misc);
+	LCR_PR(vihss);
+	LCR_PR(vivs);
+	LCR_PR(vive);
+	LCR_PR(vivss);
+	LCR_PR(vccis);
+	LCR_PR(vidwsal);
+	LCR_PR(vidwsah);
+	LCR_PR(vidrsal);
+	LCR_PR(vidrsah);
+	LCR_PR(vipddst);
+	LCR_PR(vipddet);
+	LCR_PR(vie);
+	LCR_PR(vcs);
+	LCR_PR(vphwc);
+	LCR_PR(vphs);
+	LCR_PR(vpvwc);
+	LCR_PR(vpvs);
+	LCR_PR(plhpix);
+	LCR_PR(xs);
+	LCR_PR(xckhw);
+	LCR_PR(sths);
+	LCR_PR(vt2);
+	LCR_PR(ycksw);
+	LCR_PR(ysts);
+	LCR_PR(ppols);
+	LCR_PR(precw);
+	LCR_PR(vclkhw);
+	LCR_PR(oc);
+#undef LCR_PR
+}
+#endif
+
+#ifdef CONFIG_PM
+static int tmiofb_suspend(struct platform_device *dev, pm_message_t state)
+{
+	struct fb_info			*info	= platform_get_drvdata(dev);
+	struct tmiofb_par		*par	= info->par;
+	struct mfd_cell			*cell	= mfd_get_cell(dev);
+	int				retval	= 0;
+
+	acquire_console_sem();
+
+	fb_set_suspend(info, 1);
+
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
+
+	printk(KERN_INFO "tmiofb: switching to polling\n");
+	par->use_polling = true;
+	tmiofb_hw_stop(dev);
+
+	if (cell->suspend)
+		retval = cell->suspend(dev);
+
+	release_console_sem();
+
+	return retval;
+}
+
+static int tmiofb_resume(struct platform_device *dev)
+{
+	struct fb_info			*info	= platform_get_drvdata(dev);
+	struct mfd_cell			*cell	= mfd_get_cell(dev);
+	int				retval;
+
+	acquire_console_sem();
+
+	if (cell->resume) {
+		retval = cell->resume(dev);
+		if (retval)
+			return retval;
+	}
+
+	tmiofb_irq(-1, info);
+
+	tmiofb_hw_init(dev);
+
+	tmiofb_hw_mode(dev);
+
+	fb_set_suspend(info, 0);
+	release_console_sem();
+	return 0;
+}
+#endif
+
+static struct platform_driver tmiofb_driver = {
+	.driver.name	= "tmio-fb",
+	.driver.owner	= THIS_MODULE,
+	.probe		= tmiofb_probe,
+	.remove		= __devexit_p(tmiofb_remove),
+#ifdef CONFIG_PM
+	.suspend	= tmiofb_suspend,
+	.resume		= tmiofb_resume,
+#endif
+};
+
+/*--------------------------------------------------------------------------*/
+
+#ifndef MODULE
+static void __init tmiofb_setup(char *options)
+{
+	char *this_opt;
+
+	if (!options || !*options)
+		return;
+
+	while ((this_opt = strsep(&options, ",")) != NULL) {
+		if (!*this_opt) continue;
+		/*
+		 * FIXME
+		 */
+	}
+}
+#endif
+
+static int __init tmiofb_init(void)
+{
+#ifndef MODULE
+	char *option = NULL;
+
+	if (fb_get_options("tmiofb", &option))
+		return -ENODEV;
+	tmiofb_setup(option);
+#endif
+	return platform_driver_register(&tmiofb_driver);
+}
+
+static void __exit tmiofb_cleanup(void)
+{
+	platform_driver_unregister(&tmiofb_driver);
+}
+
+module_init(tmiofb_init);
+module_exit(tmiofb_cleanup);
+
+MODULE_DESCRIPTION("TMIO framebuffer driver");
+MODULE_AUTHOR("Chris Humbert, Dirk Opfer, Dmitry Baryshkov");
+MODULE_LICENSE("GPL");
-- 
1.5.3.8