Add adapter driver for I2C adapter in Coral-P(A)/Lime GDCs.
So we can easily access devices on controller's I2C bus using
i2c-dev interface.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
endchoice
+config FB_MB862XX_I2C
+ bool "Support I2C bus on MB862XX GDC"
+ depends on FB_MB862XX && I2C
+ default y
+ help
+ Selecting this option adds Coral-P(A)/Lime GDC I2C bus adapter
+ driver to support accessing I2C devices on controller's I2C bus.
+ These are usually some video decoder chips.
+
config FB_EP93XX
tristate "EP93XX frame buffer support"
depends on FB && ARCH_EP93XX
# Makefile for the MB862xx framebuffer driver
#
-obj-$(CONFIG_FB_MB862XX) := mb862xxfb.o mb862xxfb_accel.o
+obj-$(CONFIG_FB_MB862XX) += mb862xxfb.o
+
+mb862xxfb-y := mb862xxfbdrv.o mb862xxfb_accel.o
+mb862xxfb-$(CONFIG_FB_MB862XX_I2C) += mb862xx-i2c.o
--- /dev/null
+/*
+ * Coral-P(A)/Lime I2C adapter driver
+ *
+ * (C) 2011 DENX Software Engineering, Anatolij Gustschin <agust@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/fb.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+
+#include "mb862xxfb.h"
+#include "mb862xx_reg.h"
+
+static int mb862xx_i2c_wait_event(struct i2c_adapter *adap)
+{
+ struct mb862xxfb_par *par = adap->algo_data;
+ u32 reg;
+
+ do {
+ udelay(1);
+ reg = inreg(i2c, GC_I2C_BCR);
+ if (reg & (I2C_INT | I2C_BER))
+ break;
+ } while (1);
+
+ return (reg & I2C_BER) ? 0 : 1;
+}
+
+static int mb862xx_i2c_do_address(struct i2c_adapter *adap, int addr)
+{
+ struct mb862xxfb_par *par = adap->algo_data;
+
+ outreg(i2c, GC_I2C_DAR, addr);
+ outreg(i2c, GC_I2C_CCR, I2C_CLOCK_AND_ENABLE);
+ outreg(i2c, GC_I2C_BCR, par->i2c_rs ? I2C_REPEATED_START : I2C_START);
+ if (!mb862xx_i2c_wait_event(adap))
+ return -EIO;
+ par->i2c_rs = !(inreg(i2c, GC_I2C_BSR) & I2C_LRB);
+ return par->i2c_rs;
+}
+
+static int mb862xx_i2c_write_byte(struct i2c_adapter *adap, u8 byte)
+{
+ struct mb862xxfb_par *par = adap->algo_data;
+
+ outreg(i2c, GC_I2C_DAR, byte);
+ outreg(i2c, GC_I2C_BCR, I2C_START);
+ if (!mb862xx_i2c_wait_event(adap))
+ return -EIO;
+ return !(inreg(i2c, GC_I2C_BSR) & I2C_LRB);
+}
+
+static int mb862xx_i2c_read_byte(struct i2c_adapter *adap, u8 *byte, int last)
+{
+ struct mb862xxfb_par *par = adap->algo_data;
+
+ outreg(i2c, GC_I2C_BCR, I2C_START | (last ? 0 : I2C_ACK));
+ if (!mb862xx_i2c_wait_event(adap))
+ return 0;
+ *byte = inreg(i2c, GC_I2C_DAR);
+ return 1;
+}
+
+void mb862xx_i2c_stop(struct i2c_adapter *adap)
+{
+ struct mb862xxfb_par *par = adap->algo_data;
+
+ outreg(i2c, GC_I2C_BCR, I2C_STOP);
+ outreg(i2c, GC_I2C_CCR, I2C_DISABLE);
+ par->i2c_rs = 0;
+}
+
+static int mb862xx_i2c_read(struct i2c_adapter *adap, struct i2c_msg *m)
+{
+ int i, ret = 0;
+ int last = m->len - 1;
+
+ for (i = 0; i < m->len; i++) {
+ if (!mb862xx_i2c_read_byte(adap, &m->buf[i], i == last)) {
+ ret = -EIO;
+ break;
+ }
+ }
+ return ret;
+}
+
+static int mb862xx_i2c_write(struct i2c_adapter *adap, struct i2c_msg *m)
+{
+ int i, ret = 0;
+
+ for (i = 0; i < m->len; i++) {
+ if (!mb862xx_i2c_write_byte(adap, m->buf[i])) {
+ ret = -EIO;
+ break;
+ }
+ }
+ return ret;
+}
+
+static int mb862xx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
+ int num)
+{
+ struct mb862xxfb_par *par = adap->algo_data;
+ struct i2c_msg *m;
+ int addr;
+ int i = 0, err = 0;
+
+ dev_dbg(par->dev, "%s: %d msgs\n", __func__, num);
+
+ for (i = 0; i < num; i++) {
+ m = &msgs[i];
+ if (!m->len) {
+ dev_dbg(par->dev, "%s: null msgs\n", __func__);
+ continue;
+ }
+ addr = m->addr;
+ if (m->flags & I2C_M_RD)
+ addr |= 1;
+
+ err = mb862xx_i2c_do_address(adap, addr);
+ if (err < 0)
+ break;
+ if (m->flags & I2C_M_RD)
+ err = mb862xx_i2c_read(adap, m);
+ else
+ err = mb862xx_i2c_write(adap, m);
+ }
+
+ if (i)
+ mb862xx_i2c_stop(adap);
+
+ return (err < 0) ? err : i;
+}
+
+static u32 mb862xx_func(struct i2c_adapter *adap)
+{
+ return I2C_FUNC_SMBUS_BYTE_DATA;
+}
+
+static const struct i2c_algorithm mb862xx_algo = {
+ .master_xfer = mb862xx_xfer,
+ .functionality = mb862xx_func,
+};
+
+static struct i2c_adapter mb862xx_i2c_adapter = {
+ .name = "MB862xx I2C adapter",
+ .algo = &mb862xx_algo,
+ .owner = THIS_MODULE,
+};
+
+int mb862xx_i2c_init(struct mb862xxfb_par *par)
+{
+ int ret;
+
+ mb862xx_i2c_adapter.algo_data = par;
+ par->adap = &mb862xx_i2c_adapter;
+
+ ret = i2c_add_adapter(par->adap);
+ if (ret < 0) {
+ dev_err(par->dev, "failed to add %s\n",
+ mb862xx_i2c_adapter.name);
+ }
+ return ret;
+}
+
+void mb862xx_i2c_exit(struct mb862xxfb_par *par)
+{
+ if (par->adap) {
+ i2c_del_adapter(par->adap);
+ par->adap = NULL;
+ }
+}
#define GC_DISP_REFCLK_400 400
+/* I2C */
+#define GC_I2C_BSR 0x00000000 /* BSR */
+#define GC_I2C_BCR 0x00000004 /* BCR */
+#define GC_I2C_CCR 0x00000008 /* CCR */
+#define GC_I2C_ADR 0x0000000C /* ADR */
+#define GC_I2C_DAR 0x00000010 /* DAR */
+
+#define I2C_DISABLE 0x00000000
+#define I2C_STOP 0x00000000
+#define I2C_START 0x00000010
+#define I2C_REPEATED_START 0x00000030
+#define I2C_CLOCK_AND_ENABLE 0x0000003f
+#define I2C_READY 0x01
+#define I2C_INT 0x01
+#define I2C_INTE 0x02
+#define I2C_ACK 0x08
+#define I2C_BER 0x80
+#define I2C_BEIE 0x40
+#define I2C_TRX 0x80
+#define I2C_LRB 0x10
+
/* Carmine specific */
#define MB86297_DRAW_BASE 0x00020000
#define MB86297_DISP0_BASE 0x00100000
+++ /dev/null
-/*
- * drivers/mb862xx/mb862xxfb.c
- *
- * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver
- *
- * (C) 2008 Anatolij Gustschin <agust@denx.de>
- * DENX Software Engineering
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-#undef DEBUG
-
-#include <linux/fb.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#if defined(CONFIG_OF)
-#include <linux/of_platform.h>
-#endif
-#include "mb862xxfb.h"
-#include "mb862xx_reg.h"
-
-#define NR_PALETTE 256
-#define MB862XX_MEM_SIZE 0x1000000
-#define CORALP_MEM_SIZE 0x4000000
-#define CARMINE_MEM_SIZE 0x8000000
-#define DRV_NAME "mb862xxfb"
-
-#if defined(CONFIG_SOCRATES)
-static struct mb862xx_gc_mode socrates_gc_mode = {
- /* Mode for Prime View PM070WL4 TFT LCD Panel */
- { "800x480", 45, 800, 480, 40000, 86, 42, 33, 10, 128, 2, 0, 0, 0 },
- /* 16 bits/pixel, 16MB, 133MHz, SDRAM memory mode value */
- 16, 0x1000000, GC_CCF_COT_133, 0x4157ba63
-};
-#endif
-
-/* Helpers */
-static inline int h_total(struct fb_var_screeninfo *var)
-{
- return var->xres + var->left_margin +
- var->right_margin + var->hsync_len;
-}
-
-static inline int v_total(struct fb_var_screeninfo *var)
-{
- return var->yres + var->upper_margin +
- var->lower_margin + var->vsync_len;
-}
-
-static inline int hsp(struct fb_var_screeninfo *var)
-{
- return var->xres + var->right_margin - 1;
-}
-
-static inline int vsp(struct fb_var_screeninfo *var)
-{
- return var->yres + var->lower_margin - 1;
-}
-
-static inline int d_pitch(struct fb_var_screeninfo *var)
-{
- return var->xres * var->bits_per_pixel / 8;
-}
-
-static inline unsigned int chan_to_field(unsigned int chan,
- struct fb_bitfield *bf)
-{
- chan &= 0xffff;
- chan >>= 16 - bf->length;
- return chan << bf->offset;
-}
-
-static int mb862xxfb_setcolreg(unsigned regno,
- unsigned red, unsigned green, unsigned blue,
- unsigned transp, struct fb_info *info)
-{
- struct mb862xxfb_par *par = info->par;
- unsigned int val;
-
- switch (info->fix.visual) {
- case FB_VISUAL_TRUECOLOR:
- if (regno < 16) {
- val = chan_to_field(red, &info->var.red);
- val |= chan_to_field(green, &info->var.green);
- val |= chan_to_field(blue, &info->var.blue);
- par->pseudo_palette[regno] = val;
- }
- break;
- case FB_VISUAL_PSEUDOCOLOR:
- if (regno < 256) {
- val = (red >> 8) << 16;
- val |= (green >> 8) << 8;
- val |= blue >> 8;
- outreg(disp, GC_L0PAL0 + (regno * 4), val);
- }
- break;
- default:
- return 1; /* unsupported type */
- }
- return 0;
-}
-
-static int mb862xxfb_check_var(struct fb_var_screeninfo *var,
- struct fb_info *fbi)
-{
- unsigned long tmp;
-
- if (fbi->dev)
- dev_dbg(fbi->dev, "%s\n", __func__);
-
- /* check if these values fit into the registers */
- if (var->hsync_len > 255 || var->vsync_len > 255)
- return -EINVAL;
-
- if ((var->xres + var->right_margin) >= 4096)
- return -EINVAL;
-
- if ((var->yres + var->lower_margin) > 4096)
- return -EINVAL;
-
- if (h_total(var) > 4096 || v_total(var) > 4096)
- return -EINVAL;
-
- if (var->xres_virtual > 4096 || var->yres_virtual > 4096)
- return -EINVAL;
-
- if (var->bits_per_pixel <= 8)
- var->bits_per_pixel = 8;
- else if (var->bits_per_pixel <= 16)
- var->bits_per_pixel = 16;
- else if (var->bits_per_pixel <= 32)
- var->bits_per_pixel = 32;
-
- /*
- * can cope with 8,16 or 24/32bpp if resulting
- * pitch is divisible by 64 without remainder
- */
- if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT) {
- int r;
-
- var->bits_per_pixel = 0;
- do {
- var->bits_per_pixel += 8;
- r = d_pitch(&fbi->var) % GC_L0M_L0W_UNIT;
- } while (r && var->bits_per_pixel <= 32);
-
- if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT)
- return -EINVAL;
- }
-
- /* line length is going to be 128 bit aligned */
- tmp = (var->xres * var->bits_per_pixel) / 8;
- if ((tmp & 15) != 0)
- return -EINVAL;
-
- /* set r/g/b positions and validate bpp */
- switch (var->bits_per_pixel) {
- case 8:
- var->red.length = var->bits_per_pixel;
- var->green.length = var->bits_per_pixel;
- var->blue.length = var->bits_per_pixel;
- var->red.offset = 0;
- var->green.offset = 0;
- var->blue.offset = 0;
- var->transp.length = 0;
- break;
- case 16:
- var->red.length = 5;
- var->green.length = 5;
- var->blue.length = 5;
- var->red.offset = 10;
- var->green.offset = 5;
- var->blue.offset = 0;
- var->transp.length = 0;
- break;
- case 24:
- case 32:
- var->transp.length = 8;
- var->red.length = 8;
- var->green.length = 8;
- var->blue.length = 8;
- var->transp.offset = 24;
- var->red.offset = 16;
- var->green.offset = 8;
- var->blue.offset = 0;
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-/*
- * set display parameters
- */
-static int mb862xxfb_set_par(struct fb_info *fbi)
-{
- struct mb862xxfb_par *par = fbi->par;
- unsigned long reg, sc;
-
- dev_dbg(par->dev, "%s\n", __func__);
- if (par->type == BT_CORALP)
- mb862xxfb_init_accel(fbi, fbi->var.xres);
-
- if (par->pre_init)
- return 0;
-
- /* disp off */
- reg = inreg(disp, GC_DCM1);
- reg &= ~GC_DCM01_DEN;
- outreg(disp, GC_DCM1, reg);
-
- /* set display reference clock div. */
- sc = par->refclk / (1000000 / fbi->var.pixclock) - 1;
- reg = inreg(disp, GC_DCM1);
- reg &= ~(GC_DCM01_CKS | GC_DCM01_RESV | GC_DCM01_SC);
- reg |= sc << 8;
- outreg(disp, GC_DCM1, reg);
- dev_dbg(par->dev, "SC 0x%lx\n", sc);
-
- /* disp dimension, format */
- reg = pack(d_pitch(&fbi->var) / GC_L0M_L0W_UNIT,
- (fbi->var.yres - 1));
- if (fbi->var.bits_per_pixel == 16)
- reg |= GC_L0M_L0C_16;
- outreg(disp, GC_L0M, reg);
-
- if (fbi->var.bits_per_pixel == 32) {
- reg = inreg(disp, GC_L0EM);
- outreg(disp, GC_L0EM, reg | GC_L0EM_L0EC_24);
- }
- outreg(disp, GC_WY_WX, 0);
- reg = pack(fbi->var.yres - 1, fbi->var.xres);
- outreg(disp, GC_WH_WW, reg);
- outreg(disp, GC_L0OA0, 0);
- outreg(disp, GC_L0DA0, 0);
- outreg(disp, GC_L0DY_L0DX, 0);
- outreg(disp, GC_L0WY_L0WX, 0);
- outreg(disp, GC_L0WH_L0WW, reg);
-
- /* both HW-cursors off */
- reg = inreg(disp, GC_CPM_CUTC);
- reg &= ~(GC_CPM_CEN0 | GC_CPM_CEN1);
- outreg(disp, GC_CPM_CUTC, reg);
-
- /* timings */
- reg = pack(fbi->var.xres - 1, fbi->var.xres - 1);
- outreg(disp, GC_HDB_HDP, reg);
- reg = pack((fbi->var.yres - 1), vsp(&fbi->var));
- outreg(disp, GC_VDP_VSP, reg);
- reg = ((fbi->var.vsync_len - 1) << 24) |
- pack((fbi->var.hsync_len - 1), hsp(&fbi->var));
- outreg(disp, GC_VSW_HSW_HSP, reg);
- outreg(disp, GC_HTP, pack(h_total(&fbi->var) - 1, 0));
- outreg(disp, GC_VTR, pack(v_total(&fbi->var) - 1, 0));
-
- /* display on */
- reg = inreg(disp, GC_DCM1);
- reg |= GC_DCM01_DEN | GC_DCM01_L0E;
- reg &= ~GC_DCM01_ESY;
- outreg(disp, GC_DCM1, reg);
- return 0;
-}
-
-static int mb862xxfb_pan(struct fb_var_screeninfo *var,
- struct fb_info *info)
-{
- struct mb862xxfb_par *par = info->par;
- unsigned long reg;
-
- reg = pack(var->yoffset, var->xoffset);
- outreg(disp, GC_L0WY_L0WX, reg);
-
- reg = pack(var->yres_virtual, var->xres_virtual);
- outreg(disp, GC_L0WH_L0WW, reg);
- return 0;
-}
-
-static int mb862xxfb_blank(int mode, struct fb_info *fbi)
-{
- struct mb862xxfb_par *par = fbi->par;
- unsigned long reg;
-
- dev_dbg(fbi->dev, "blank mode=%d\n", mode);
-
- switch (mode) {
- case FB_BLANK_POWERDOWN:
- reg = inreg(disp, GC_DCM1);
- reg &= ~GC_DCM01_DEN;
- outreg(disp, GC_DCM1, reg);
- break;
- case FB_BLANK_UNBLANK:
- reg = inreg(disp, GC_DCM1);
- reg |= GC_DCM01_DEN;
- outreg(disp, GC_DCM1, reg);
- break;
- case FB_BLANK_NORMAL:
- case FB_BLANK_VSYNC_SUSPEND:
- case FB_BLANK_HSYNC_SUSPEND:
- default:
- return 1;
- }
- return 0;
-}
-
-/* framebuffer ops */
-static struct fb_ops mb862xxfb_ops = {
- .owner = THIS_MODULE,
- .fb_check_var = mb862xxfb_check_var,
- .fb_set_par = mb862xxfb_set_par,
- .fb_setcolreg = mb862xxfb_setcolreg,
- .fb_blank = mb862xxfb_blank,
- .fb_pan_display = mb862xxfb_pan,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
-};
-
-/* initialize fb_info data */
-static int mb862xxfb_init_fbinfo(struct fb_info *fbi)
-{
- struct mb862xxfb_par *par = fbi->par;
- struct mb862xx_gc_mode *mode = par->gc_mode;
- unsigned long reg;
-
- fbi->fbops = &mb862xxfb_ops;
- fbi->pseudo_palette = par->pseudo_palette;
- fbi->screen_base = par->fb_base;
- fbi->screen_size = par->mapped_vram;
-
- strcpy(fbi->fix.id, DRV_NAME);
- fbi->fix.smem_start = (unsigned long)par->fb_base_phys;
- fbi->fix.mmio_start = (unsigned long)par->mmio_base_phys;
- fbi->fix.mmio_len = par->mmio_len;
- fbi->fix.accel = FB_ACCEL_NONE;
- fbi->fix.type = FB_TYPE_PACKED_PIXELS;
- fbi->fix.type_aux = 0;
- fbi->fix.xpanstep = 1;
- fbi->fix.ypanstep = 1;
- fbi->fix.ywrapstep = 0;
-
- reg = inreg(disp, GC_DCM1);
- if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E) {
- /* get the disp mode from active display cfg */
- unsigned long sc = ((reg & GC_DCM01_SC) >> 8) + 1;
- unsigned long hsp, vsp, ht, vt;
-
- dev_dbg(par->dev, "using bootloader's disp. mode\n");
- fbi->var.pixclock = (sc * 1000000) / par->refclk;
- fbi->var.xres = (inreg(disp, GC_HDB_HDP) & 0x0fff) + 1;
- reg = inreg(disp, GC_VDP_VSP);
- fbi->var.yres = ((reg >> 16) & 0x0fff) + 1;
- vsp = (reg & 0x0fff) + 1;
- fbi->var.xres_virtual = fbi->var.xres;
- fbi->var.yres_virtual = fbi->var.yres;
- reg = inreg(disp, GC_L0EM);
- if (reg & GC_L0EM_L0EC_24) {
- fbi->var.bits_per_pixel = 32;
- } else {
- reg = inreg(disp, GC_L0M);
- if (reg & GC_L0M_L0C_16)
- fbi->var.bits_per_pixel = 16;
- else
- fbi->var.bits_per_pixel = 8;
- }
- reg = inreg(disp, GC_VSW_HSW_HSP);
- fbi->var.hsync_len = ((reg & 0xff0000) >> 16) + 1;
- fbi->var.vsync_len = ((reg & 0x3f000000) >> 24) + 1;
- hsp = (reg & 0xffff) + 1;
- ht = ((inreg(disp, GC_HTP) & 0xfff0000) >> 16) + 1;
- fbi->var.right_margin = hsp - fbi->var.xres;
- fbi->var.left_margin = ht - hsp - fbi->var.hsync_len;
- vt = ((inreg(disp, GC_VTR) & 0xfff0000) >> 16) + 1;
- fbi->var.lower_margin = vsp - fbi->var.yres;
- fbi->var.upper_margin = vt - vsp - fbi->var.vsync_len;
- } else if (mode) {
- dev_dbg(par->dev, "using supplied mode\n");
- fb_videomode_to_var(&fbi->var, (struct fb_videomode *)mode);
- fbi->var.bits_per_pixel = mode->def_bpp ? mode->def_bpp : 8;
- } else {
- int ret;
-
- ret = fb_find_mode(&fbi->var, fbi, "640x480-16@60",
- NULL, 0, NULL, 16);
- if (ret == 0 || ret == 4) {
- dev_err(par->dev,
- "failed to get initial mode\n");
- return -EINVAL;
- }
- }
-
- fbi->var.xoffset = 0;
- fbi->var.yoffset = 0;
- fbi->var.grayscale = 0;
- fbi->var.nonstd = 0;
- fbi->var.height = -1;
- fbi->var.width = -1;
- fbi->var.accel_flags = 0;
- fbi->var.vmode = FB_VMODE_NONINTERLACED;
- fbi->var.activate = FB_ACTIVATE_NOW;
- fbi->flags = FBINFO_DEFAULT |
-#ifdef __BIG_ENDIAN
- FBINFO_FOREIGN_ENDIAN |
-#endif
- FBINFO_HWACCEL_XPAN |
- FBINFO_HWACCEL_YPAN;
-
- /* check and possibly fix bpp */
- if ((fbi->fbops->fb_check_var)(&fbi->var, fbi))
- dev_err(par->dev, "check_var() failed on initial setup?\n");
-
- fbi->fix.visual = fbi->var.bits_per_pixel == 8 ?
- FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
- fbi->fix.line_length = (fbi->var.xres_virtual *
- fbi->var.bits_per_pixel) / 8;
- fbi->fix.smem_len = fbi->fix.line_length * fbi->var.yres_virtual;
- return 0;
-}
-
-/*
- * show some display controller and cursor registers
- */
-static ssize_t mb862xxfb_show_dispregs(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct fb_info *fbi = dev_get_drvdata(dev);
- struct mb862xxfb_par *par = fbi->par;
- char *ptr = buf;
- unsigned int reg;
-
- for (reg = GC_DCM0; reg <= GC_L0DY_L0DX; reg += 4)
- ptr += sprintf(ptr, "%08x = %08x\n",
- reg, inreg(disp, reg));
-
- for (reg = GC_CPM_CUTC; reg <= GC_CUY1_CUX1; reg += 4)
- ptr += sprintf(ptr, "%08x = %08x\n",
- reg, inreg(disp, reg));
-
- for (reg = GC_DCM1; reg <= GC_L0WH_L0WW; reg += 4)
- ptr += sprintf(ptr, "%08x = %08x\n",
- reg, inreg(disp, reg));
-
- for (reg = 0x400; reg <= 0x410; reg += 4)
- ptr += sprintf(ptr, "geo %08x = %08x\n",
- reg, inreg(geo, reg));
-
- for (reg = 0x400; reg <= 0x410; reg += 4)
- ptr += sprintf(ptr, "draw %08x = %08x\n",
- reg, inreg(draw, reg));
-
- for (reg = 0x440; reg <= 0x450; reg += 4)
- ptr += sprintf(ptr, "draw %08x = %08x\n",
- reg, inreg(draw, reg));
-
- return ptr - buf;
-}
-
-static DEVICE_ATTR(dispregs, 0444, mb862xxfb_show_dispregs, NULL);
-
-irqreturn_t mb862xx_intr(int irq, void *dev_id)
-{
- struct mb862xxfb_par *par = (struct mb862xxfb_par *) dev_id;
- unsigned long reg_ist, mask;
-
- if (!par)
- return IRQ_NONE;
-
- if (par->type == BT_CARMINE) {
- /* Get Interrupt Status */
- reg_ist = inreg(ctrl, GC_CTRL_STATUS);
- mask = inreg(ctrl, GC_CTRL_INT_MASK);
- if (reg_ist == 0)
- return IRQ_HANDLED;
-
- reg_ist &= mask;
- if (reg_ist == 0)
- return IRQ_HANDLED;
-
- /* Clear interrupt status */
- outreg(ctrl, 0x0, reg_ist);
- } else {
- /* Get status */
- reg_ist = inreg(host, GC_IST);
- mask = inreg(host, GC_IMASK);
-
- reg_ist &= mask;
- if (reg_ist == 0)
- return IRQ_HANDLED;
-
- /* Clear status */
- outreg(host, GC_IST, ~reg_ist);
- }
- return IRQ_HANDLED;
-}
-
-#if defined(CONFIG_FB_MB862XX_LIME)
-/*
- * GDC (Lime, Coral(B/Q), Mint, ...) on host bus
- */
-static int mb862xx_gdc_init(struct mb862xxfb_par *par)
-{
- unsigned long ccf, mmr;
- unsigned long ver, rev;
-
- if (!par)
- return -ENODEV;
-
-#if defined(CONFIG_FB_PRE_INIT_FB)
- par->pre_init = 1;
-#endif
- par->host = par->mmio_base;
- par->i2c = par->mmio_base + MB862XX_I2C_BASE;
- par->disp = par->mmio_base + MB862XX_DISP_BASE;
- par->cap = par->mmio_base + MB862XX_CAP_BASE;
- par->draw = par->mmio_base + MB862XX_DRAW_BASE;
- par->geo = par->mmio_base + MB862XX_GEO_BASE;
- par->pio = par->mmio_base + MB862XX_PIO_BASE;
-
- par->refclk = GC_DISP_REFCLK_400;
-
- ver = inreg(host, GC_CID);
- rev = inreg(pio, GC_REVISION);
- if ((ver == 0x303) && (rev & 0xffffff00) == 0x20050100) {
- dev_info(par->dev, "Fujitsu Lime v1.%d found\n",
- (int)rev & 0xff);
- par->type = BT_LIME;
- ccf = par->gc_mode ? par->gc_mode->ccf : GC_CCF_COT_100;
- mmr = par->gc_mode ? par->gc_mode->mmr : 0x414fb7f2;
- } else {
- dev_info(par->dev, "? GDC, CID/Rev.: 0x%lx/0x%lx \n", ver, rev);
- return -ENODEV;
- }
-
- if (!par->pre_init) {
- outreg(host, GC_CCF, ccf);
- udelay(200);
- outreg(host, GC_MMR, mmr);
- udelay(10);
- }
-
- /* interrupt status */
- outreg(host, GC_IST, 0);
- outreg(host, GC_IMASK, GC_INT_EN);
- return 0;
-}
-
-static int __devinit of_platform_mb862xx_probe(struct platform_device *ofdev)
-{
- struct device_node *np = ofdev->dev.of_node;
- struct device *dev = &ofdev->dev;
- struct mb862xxfb_par *par;
- struct fb_info *info;
- struct resource res;
- resource_size_t res_size;
- unsigned long ret = -ENODEV;
-
- if (of_address_to_resource(np, 0, &res)) {
- dev_err(dev, "Invalid address\n");
- return -ENXIO;
- }
-
- info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev);
- if (info == NULL) {
- dev_err(dev, "cannot allocate framebuffer\n");
- return -ENOMEM;
- }
-
- par = info->par;
- par->info = info;
- par->dev = dev;
-
- par->irq = irq_of_parse_and_map(np, 0);
- if (par->irq == NO_IRQ) {
- dev_err(dev, "failed to map irq\n");
- ret = -ENODEV;
- goto fbrel;
- }
-
- res_size = 1 + res.end - res.start;
- par->res = request_mem_region(res.start, res_size, DRV_NAME);
- if (par->res == NULL) {
- dev_err(dev, "Cannot claim framebuffer/mmio\n");
- ret = -ENXIO;
- goto irqdisp;
- }
-
-#if defined(CONFIG_SOCRATES)
- par->gc_mode = &socrates_gc_mode;
-#endif
-
- par->fb_base_phys = res.start;
- par->mmio_base_phys = res.start + MB862XX_MMIO_BASE;
- par->mmio_len = MB862XX_MMIO_SIZE;
- if (par->gc_mode)
- par->mapped_vram = par->gc_mode->max_vram;
- else
- par->mapped_vram = MB862XX_MEM_SIZE;
-
- par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram);
- if (par->fb_base == NULL) {
- dev_err(dev, "Cannot map framebuffer\n");
- goto rel_reg;
- }
-
- par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len);
- if (par->mmio_base == NULL) {
- dev_err(dev, "Cannot map registers\n");
- goto fb_unmap;
- }
-
- dev_dbg(dev, "fb phys 0x%llx 0x%lx\n",
- (u64)par->fb_base_phys, (ulong)par->mapped_vram);
- dev_dbg(dev, "mmio phys 0x%llx 0x%lx, (irq = %d)\n",
- (u64)par->mmio_base_phys, (ulong)par->mmio_len, par->irq);
-
- if (mb862xx_gdc_init(par))
- goto io_unmap;
-
- if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED,
- DRV_NAME, (void *)par)) {
- dev_err(dev, "Cannot request irq\n");
- goto io_unmap;
- }
-
- mb862xxfb_init_fbinfo(info);
-
- if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) {
- dev_err(dev, "Could not allocate cmap for fb_info.\n");
- goto free_irq;
- }
-
- if ((info->fbops->fb_set_par)(info))
- dev_err(dev, "set_var() failed on initial setup?\n");
-
- if (register_framebuffer(info)) {
- dev_err(dev, "failed to register framebuffer\n");
- goto rel_cmap;
- }
-
- dev_set_drvdata(dev, info);
-
- if (device_create_file(dev, &dev_attr_dispregs))
- dev_err(dev, "Can't create sysfs regdump file\n");
- return 0;
-
-rel_cmap:
- fb_dealloc_cmap(&info->cmap);
-free_irq:
- outreg(host, GC_IMASK, 0);
- free_irq(par->irq, (void *)par);
-io_unmap:
- iounmap(par->mmio_base);
-fb_unmap:
- iounmap(par->fb_base);
-rel_reg:
- release_mem_region(res.start, res_size);
-irqdisp:
- irq_dispose_mapping(par->irq);
-fbrel:
- dev_set_drvdata(dev, NULL);
- framebuffer_release(info);
- return ret;
-}
-
-static int __devexit of_platform_mb862xx_remove(struct platform_device *ofdev)
-{
- struct fb_info *fbi = dev_get_drvdata(&ofdev->dev);
- struct mb862xxfb_par *par = fbi->par;
- resource_size_t res_size = 1 + par->res->end - par->res->start;
- unsigned long reg;
-
- dev_dbg(fbi->dev, "%s release\n", fbi->fix.id);
-
- /* display off */
- reg = inreg(disp, GC_DCM1);
- reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E);
- outreg(disp, GC_DCM1, reg);
-
- /* disable interrupts */
- outreg(host, GC_IMASK, 0);
-
- free_irq(par->irq, (void *)par);
- irq_dispose_mapping(par->irq);
-
- device_remove_file(&ofdev->dev, &dev_attr_dispregs);
-
- unregister_framebuffer(fbi);
- fb_dealloc_cmap(&fbi->cmap);
-
- iounmap(par->mmio_base);
- iounmap(par->fb_base);
-
- dev_set_drvdata(&ofdev->dev, NULL);
- release_mem_region(par->res->start, res_size);
- framebuffer_release(fbi);
- return 0;
-}
-
-/*
- * common types
- */
-static struct of_device_id __devinitdata of_platform_mb862xx_tbl[] = {
- { .compatible = "fujitsu,MB86276", },
- { .compatible = "fujitsu,lime", },
- { .compatible = "fujitsu,MB86277", },
- { .compatible = "fujitsu,mint", },
- { .compatible = "fujitsu,MB86293", },
- { .compatible = "fujitsu,MB86294", },
- { .compatible = "fujitsu,coral", },
- { /* end */ }
-};
-
-static struct platform_driver of_platform_mb862xxfb_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- .of_match_table = of_platform_mb862xx_tbl,
- },
- .probe = of_platform_mb862xx_probe,
- .remove = __devexit_p(of_platform_mb862xx_remove),
-};
-#endif
-
-#if defined(CONFIG_FB_MB862XX_PCI_GDC)
-static int coralp_init(struct mb862xxfb_par *par)
-{
- int cn, ver;
-
- par->host = par->mmio_base;
- par->i2c = par->mmio_base + MB862XX_I2C_BASE;
- par->disp = par->mmio_base + MB862XX_DISP_BASE;
- par->cap = par->mmio_base + MB862XX_CAP_BASE;
- par->draw = par->mmio_base + MB862XX_DRAW_BASE;
- par->geo = par->mmio_base + MB862XX_GEO_BASE;
- par->pio = par->mmio_base + MB862XX_PIO_BASE;
-
- par->refclk = GC_DISP_REFCLK_400;
-
- if (par->mapped_vram >= 0x2000000) {
- /* relocate gdc registers space */
- writel(1, par->fb_base + MB862XX_MMIO_BASE + GC_RSW);
- udelay(1); /* wait at least 20 bus cycles */
- }
-
- ver = inreg(host, GC_CID);
- cn = (ver & GC_CID_CNAME_MSK) >> 8;
- ver = ver & GC_CID_VERSION_MSK;
- if (cn == 3) {
- unsigned long reg;
-
- dev_info(par->dev, "Fujitsu Coral-%s GDC Rev.%d found\n",\
- (ver == 6) ? "P" : (ver == 8) ? "PA" : "?",
- par->pdev->revision);
- reg = inreg(disp, GC_DCM1);
- if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E)
- par->pre_init = 1;
-
- if (!par->pre_init) {
- outreg(host, GC_CCF, GC_CCF_CGE_166 | GC_CCF_COT_133);
- udelay(200);
- outreg(host, GC_MMR, GC_MMR_CORALP_EVB_VAL);
- udelay(10);
- }
- /* Clear interrupt status */
- outreg(host, GC_IST, 0);
- } else {
- return -ENODEV;
- }
- return 0;
-}
-
-static int init_dram_ctrl(struct mb862xxfb_par *par)
-{
- unsigned long i = 0;
-
- /*
- * Set io mode first! Spec. says IC may be destroyed
- * if not set to SSTL2/LVCMOS before init.
- */
- outreg(dram_ctrl, GC_DCTL_IOCONT1_IOCONT0, GC_EVB_DCTL_IOCONT1_IOCONT0);
-
- /* DRAM init */
- outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD);
- outreg(dram_ctrl, GC_DCTL_SETTIME1_EMODE, GC_EVB_DCTL_SETTIME1_EMODE);
- outreg(dram_ctrl, GC_DCTL_REFRESH_SETTIME2,
- GC_EVB_DCTL_REFRESH_SETTIME2);
- outreg(dram_ctrl, GC_DCTL_RSV2_RSV1, GC_EVB_DCTL_RSV2_RSV1);
- outreg(dram_ctrl, GC_DCTL_DDRIF2_DDRIF1, GC_EVB_DCTL_DDRIF2_DDRIF1);
- outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES);
-
- /* DLL reset done? */
- while ((inreg(dram_ctrl, GC_DCTL_RSV0_STATES) & GC_DCTL_STATES_MSK)) {
- udelay(GC_DCTL_INIT_WAIT_INTERVAL);
- if (i++ > GC_DCTL_INIT_WAIT_CNT) {
- dev_err(par->dev, "VRAM init failed.\n");
- return -EINVAL;
- }
- }
- outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD_AFT_RST);
- outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES_AFT_RST);
- return 0;
-}
-
-static int carmine_init(struct mb862xxfb_par *par)
-{
- unsigned long reg;
-
- par->ctrl = par->mmio_base + MB86297_CTRL_BASE;
- par->i2c = par->mmio_base + MB86297_I2C_BASE;
- par->disp = par->mmio_base + MB86297_DISP0_BASE;
- par->disp1 = par->mmio_base + MB86297_DISP1_BASE;
- par->cap = par->mmio_base + MB86297_CAP0_BASE;
- par->cap1 = par->mmio_base + MB86297_CAP1_BASE;
- par->draw = par->mmio_base + MB86297_DRAW_BASE;
- par->dram_ctrl = par->mmio_base + MB86297_DRAMCTRL_BASE;
- par->wrback = par->mmio_base + MB86297_WRBACK_BASE;
-
- par->refclk = GC_DISP_REFCLK_533;
-
- /* warm up */
- reg = GC_CTRL_CLK_EN_DRAM | GC_CTRL_CLK_EN_2D3D | GC_CTRL_CLK_EN_DISP0;
- outreg(ctrl, GC_CTRL_CLK_ENABLE, reg);
-
- /* check for engine module revision */
- if (inreg(draw, GC_2D3D_REV) == GC_RE_REVISION)
- dev_info(par->dev, "Fujitsu Carmine GDC Rev.%d found\n",
- par->pdev->revision);
- else
- goto err_init;
-
- reg &= ~GC_CTRL_CLK_EN_2D3D;
- outreg(ctrl, GC_CTRL_CLK_ENABLE, reg);
-
- /* set up vram */
- if (init_dram_ctrl(par) < 0)
- goto err_init;
-
- outreg(ctrl, GC_CTRL_INT_MASK, 0);
- return 0;
-
-err_init:
- outreg(ctrl, GC_CTRL_CLK_ENABLE, 0);
- return -EINVAL;
-}
-
-static inline int mb862xx_pci_gdc_init(struct mb862xxfb_par *par)
-{
- switch (par->type) {
- case BT_CORALP:
- return coralp_init(par);
- case BT_CARMINE:
- return carmine_init(par);
- default:
- return -ENODEV;
- }
-}
-
-#define CHIP_ID(id) \
- { PCI_DEVICE(PCI_VENDOR_ID_FUJITSU_LIMITED, id) }
-
-static struct pci_device_id mb862xx_pci_tbl[] __devinitdata = {
- /* MB86295/MB86296 */
- CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALP),
- CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALPA),
- /* MB86297 */
- CHIP_ID(PCI_DEVICE_ID_FUJITSU_CARMINE),
- { 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, mb862xx_pci_tbl);
-
-static int __devinit mb862xx_pci_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct mb862xxfb_par *par;
- struct fb_info *info;
- struct device *dev = &pdev->dev;
- int ret;
-
- ret = pci_enable_device(pdev);
- if (ret < 0) {
- dev_err(dev, "Cannot enable PCI device\n");
- goto out;
- }
-
- info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev);
- if (!info) {
- dev_err(dev, "framebuffer alloc failed\n");
- ret = -ENOMEM;
- goto dis_dev;
- }
-
- par = info->par;
- par->info = info;
- par->dev = dev;
- par->pdev = pdev;
- par->irq = pdev->irq;
-
- ret = pci_request_regions(pdev, DRV_NAME);
- if (ret < 0) {
- dev_err(dev, "Cannot reserve region(s) for PCI device\n");
- goto rel_fb;
- }
-
- switch (pdev->device) {
- case PCI_DEVICE_ID_FUJITSU_CORALP:
- case PCI_DEVICE_ID_FUJITSU_CORALPA:
- par->fb_base_phys = pci_resource_start(par->pdev, 0);
- par->mapped_vram = CORALP_MEM_SIZE;
- if (par->mapped_vram >= 0x2000000) {
- par->mmio_base_phys = par->fb_base_phys +
- MB862XX_MMIO_HIGH_BASE;
- } else {
- par->mmio_base_phys = par->fb_base_phys +
- MB862XX_MMIO_BASE;
- }
- par->mmio_len = MB862XX_MMIO_SIZE;
- par->type = BT_CORALP;
- break;
- case PCI_DEVICE_ID_FUJITSU_CARMINE:
- par->fb_base_phys = pci_resource_start(par->pdev, 2);
- par->mmio_base_phys = pci_resource_start(par->pdev, 3);
- par->mmio_len = pci_resource_len(par->pdev, 3);
- par->mapped_vram = CARMINE_MEM_SIZE;
- par->type = BT_CARMINE;
- break;
- default:
- /* should never occur */
- goto rel_reg;
- }
-
- par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram);
- if (par->fb_base == NULL) {
- dev_err(dev, "Cannot map framebuffer\n");
- goto rel_reg;
- }
-
- par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len);
- if (par->mmio_base == NULL) {
- dev_err(dev, "Cannot map registers\n");
- ret = -EIO;
- goto fb_unmap;
- }
-
- dev_dbg(dev, "fb phys 0x%llx 0x%lx\n",
- (unsigned long long)par->fb_base_phys, (ulong)par->mapped_vram);
- dev_dbg(dev, "mmio phys 0x%llx 0x%lx\n",
- (unsigned long long)par->mmio_base_phys, (ulong)par->mmio_len);
-
- if (mb862xx_pci_gdc_init(par))
- goto io_unmap;
-
- if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED | IRQF_SHARED,
- DRV_NAME, (void *)par)) {
- dev_err(dev, "Cannot request irq\n");
- goto io_unmap;
- }
-
- mb862xxfb_init_fbinfo(info);
-
- if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) {
- dev_err(dev, "Could not allocate cmap for fb_info.\n");
- ret = -ENOMEM;
- goto free_irq;
- }
-
- if ((info->fbops->fb_set_par)(info))
- dev_err(dev, "set_var() failed on initial setup?\n");
-
- ret = register_framebuffer(info);
- if (ret < 0) {
- dev_err(dev, "failed to register framebuffer\n");
- goto rel_cmap;
- }
-
- pci_set_drvdata(pdev, info);
-
- if (device_create_file(dev, &dev_attr_dispregs))
- dev_err(dev, "Can't create sysfs regdump file\n");
-
- if (par->type == BT_CARMINE)
- outreg(ctrl, GC_CTRL_INT_MASK, GC_CARMINE_INT_EN);
- else
- outreg(host, GC_IMASK, GC_INT_EN);
-
- return 0;
-
-rel_cmap:
- fb_dealloc_cmap(&info->cmap);
-free_irq:
- free_irq(par->irq, (void *)par);
-io_unmap:
- iounmap(par->mmio_base);
-fb_unmap:
- iounmap(par->fb_base);
-rel_reg:
- pci_release_regions(pdev);
-rel_fb:
- framebuffer_release(info);
-dis_dev:
- pci_disable_device(pdev);
-out:
- return ret;
-}
-
-static void __devexit mb862xx_pci_remove(struct pci_dev *pdev)
-{
- struct fb_info *fbi = pci_get_drvdata(pdev);
- struct mb862xxfb_par *par = fbi->par;
- unsigned long reg;
-
- dev_dbg(fbi->dev, "%s release\n", fbi->fix.id);
-
- /* display off */
- reg = inreg(disp, GC_DCM1);
- reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E);
- outreg(disp, GC_DCM1, reg);
-
- if (par->type == BT_CARMINE) {
- outreg(ctrl, GC_CTRL_INT_MASK, 0);
- outreg(ctrl, GC_CTRL_CLK_ENABLE, 0);
- } else {
- outreg(host, GC_IMASK, 0);
- }
-
- device_remove_file(&pdev->dev, &dev_attr_dispregs);
-
- pci_set_drvdata(pdev, NULL);
- unregister_framebuffer(fbi);
- fb_dealloc_cmap(&fbi->cmap);
-
- free_irq(par->irq, (void *)par);
- iounmap(par->mmio_base);
- iounmap(par->fb_base);
-
- pci_release_regions(pdev);
- framebuffer_release(fbi);
- pci_disable_device(pdev);
-}
-
-static struct pci_driver mb862xxfb_pci_driver = {
- .name = DRV_NAME,
- .id_table = mb862xx_pci_tbl,
- .probe = mb862xx_pci_probe,
- .remove = __devexit_p(mb862xx_pci_remove),
-};
-#endif
-
-static int __devinit mb862xxfb_init(void)
-{
- int ret = -ENODEV;
-
-#if defined(CONFIG_FB_MB862XX_LIME)
- ret = platform_driver_register(&of_platform_mb862xxfb_driver);
-#endif
-#if defined(CONFIG_FB_MB862XX_PCI_GDC)
- ret = pci_register_driver(&mb862xxfb_pci_driver);
-#endif
- return ret;
-}
-
-static void __exit mb862xxfb_exit(void)
-{
-#if defined(CONFIG_FB_MB862XX_LIME)
- platform_driver_unregister(&of_platform_mb862xxfb_driver);
-#endif
-#if defined(CONFIG_FB_MB862XX_PCI_GDC)
- pci_unregister_driver(&mb862xxfb_pci_driver);
-#endif
-}
-
-module_init(mb862xxfb_init);
-module_exit(mb862xxfb_exit);
-
-MODULE_DESCRIPTION("Fujitsu MB862xx Framebuffer driver");
-MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
-MODULE_LICENSE("GPL v2");
unsigned int refclk; /* disp. reference clock */
struct mb862xx_gc_mode *gc_mode; /* GDC mode init data */
int pre_init; /* don't init display if 1 */
+ struct i2c_adapter *adap; /* GDC I2C bus adapter */
+ int i2c_rs;
u32 pseudo_palette[16];
};
extern void mb862xxfb_init_accel(struct fb_info *info, int xres);
+#ifdef CONFIG_FB_MB862XX_I2C
+extern int mb862xx_i2c_init(struct mb862xxfb_par *par);
+extern void mb862xx_i2c_exit(struct mb862xxfb_par *par);
+#else
+static inline int mb862xx_i2c_init(struct mb862xxfb_par *par) { return 0; }
+static inline void mb862xx_i2c_exit(struct mb862xxfb_par *par) { }
+#endif
#if defined(CONFIG_FB_MB862XX_LIME) && defined(CONFIG_FB_MB862XX_PCI_GDC)
#error "Select Lime GDC or CoralP/Carmine support, but not both together"
--- /dev/null
+/*
+ * drivers/mb862xx/mb862xxfb.c
+ *
+ * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver
+ *
+ * (C) 2008 Anatolij Gustschin <agust@denx.de>
+ * DENX Software Engineering
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#undef DEBUG
+
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#if defined(CONFIG_OF)
+#include <linux/of_platform.h>
+#endif
+#include "mb862xxfb.h"
+#include "mb862xx_reg.h"
+
+#define NR_PALETTE 256
+#define MB862XX_MEM_SIZE 0x1000000
+#define CORALP_MEM_SIZE 0x4000000
+#define CARMINE_MEM_SIZE 0x8000000
+#define DRV_NAME "mb862xxfb"
+
+#if defined(CONFIG_SOCRATES)
+static struct mb862xx_gc_mode socrates_gc_mode = {
+ /* Mode for Prime View PM070WL4 TFT LCD Panel */
+ { "800x480", 45, 800, 480, 40000, 86, 42, 33, 10, 128, 2, 0, 0, 0 },
+ /* 16 bits/pixel, 16MB, 133MHz, SDRAM memory mode value */
+ 16, 0x1000000, GC_CCF_COT_133, 0x4157ba63
+};
+#endif
+
+/* Helpers */
+static inline int h_total(struct fb_var_screeninfo *var)
+{
+ return var->xres + var->left_margin +
+ var->right_margin + var->hsync_len;
+}
+
+static inline int v_total(struct fb_var_screeninfo *var)
+{
+ return var->yres + var->upper_margin +
+ var->lower_margin + var->vsync_len;
+}
+
+static inline int hsp(struct fb_var_screeninfo *var)
+{
+ return var->xres + var->right_margin - 1;
+}
+
+static inline int vsp(struct fb_var_screeninfo *var)
+{
+ return var->yres + var->lower_margin - 1;
+}
+
+static inline int d_pitch(struct fb_var_screeninfo *var)
+{
+ return var->xres * var->bits_per_pixel / 8;
+}
+
+static inline unsigned int chan_to_field(unsigned int chan,
+ struct fb_bitfield *bf)
+{
+ chan &= 0xffff;
+ chan >>= 16 - bf->length;
+ return chan << bf->offset;
+}
+
+static int mb862xxfb_setcolreg(unsigned regno,
+ unsigned red, unsigned green, unsigned blue,
+ unsigned transp, struct fb_info *info)
+{
+ struct mb862xxfb_par *par = info->par;
+ unsigned int val;
+
+ switch (info->fix.visual) {
+ case FB_VISUAL_TRUECOLOR:
+ if (regno < 16) {
+ val = chan_to_field(red, &info->var.red);
+ val |= chan_to_field(green, &info->var.green);
+ val |= chan_to_field(blue, &info->var.blue);
+ par->pseudo_palette[regno] = val;
+ }
+ break;
+ case FB_VISUAL_PSEUDOCOLOR:
+ if (regno < 256) {
+ val = (red >> 8) << 16;
+ val |= (green >> 8) << 8;
+ val |= blue >> 8;
+ outreg(disp, GC_L0PAL0 + (regno * 4), val);
+ }
+ break;
+ default:
+ return 1; /* unsupported type */
+ }
+ return 0;
+}
+
+static int mb862xxfb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *fbi)
+{
+ unsigned long tmp;
+
+ if (fbi->dev)
+ dev_dbg(fbi->dev, "%s\n", __func__);
+
+ /* check if these values fit into the registers */
+ if (var->hsync_len > 255 || var->vsync_len > 255)
+ return -EINVAL;
+
+ if ((var->xres + var->right_margin) >= 4096)
+ return -EINVAL;
+
+ if ((var->yres + var->lower_margin) > 4096)
+ return -EINVAL;
+
+ if (h_total(var) > 4096 || v_total(var) > 4096)
+ return -EINVAL;
+
+ if (var->xres_virtual > 4096 || var->yres_virtual > 4096)
+ return -EINVAL;
+
+ if (var->bits_per_pixel <= 8)
+ var->bits_per_pixel = 8;
+ else if (var->bits_per_pixel <= 16)
+ var->bits_per_pixel = 16;
+ else if (var->bits_per_pixel <= 32)
+ var->bits_per_pixel = 32;
+
+ /*
+ * can cope with 8,16 or 24/32bpp if resulting
+ * pitch is divisible by 64 without remainder
+ */
+ if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT) {
+ int r;
+
+ var->bits_per_pixel = 0;
+ do {
+ var->bits_per_pixel += 8;
+ r = d_pitch(&fbi->var) % GC_L0M_L0W_UNIT;
+ } while (r && var->bits_per_pixel <= 32);
+
+ if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT)
+ return -EINVAL;
+ }
+
+ /* line length is going to be 128 bit aligned */
+ tmp = (var->xres * var->bits_per_pixel) / 8;
+ if ((tmp & 15) != 0)
+ return -EINVAL;
+
+ /* set r/g/b positions and validate bpp */
+ switch (var->bits_per_pixel) {
+ case 8:
+ var->red.length = var->bits_per_pixel;
+ var->green.length = var->bits_per_pixel;
+ var->blue.length = var->bits_per_pixel;
+ var->red.offset = 0;
+ var->green.offset = 0;
+ var->blue.offset = 0;
+ var->transp.length = 0;
+ break;
+ case 16:
+ var->red.length = 5;
+ var->green.length = 5;
+ var->blue.length = 5;
+ var->red.offset = 10;
+ var->green.offset = 5;
+ var->blue.offset = 0;
+ var->transp.length = 0;
+ break;
+ case 24:
+ case 32:
+ var->transp.length = 8;
+ var->red.length = 8;
+ var->green.length = 8;
+ var->blue.length = 8;
+ var->transp.offset = 24;
+ var->red.offset = 16;
+ var->green.offset = 8;
+ var->blue.offset = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * set display parameters
+ */
+static int mb862xxfb_set_par(struct fb_info *fbi)
+{
+ struct mb862xxfb_par *par = fbi->par;
+ unsigned long reg, sc;
+
+ dev_dbg(par->dev, "%s\n", __func__);
+ if (par->type == BT_CORALP)
+ mb862xxfb_init_accel(fbi, fbi->var.xres);
+
+ if (par->pre_init)
+ return 0;
+
+ /* disp off */
+ reg = inreg(disp, GC_DCM1);
+ reg &= ~GC_DCM01_DEN;
+ outreg(disp, GC_DCM1, reg);
+
+ /* set display reference clock div. */
+ sc = par->refclk / (1000000 / fbi->var.pixclock) - 1;
+ reg = inreg(disp, GC_DCM1);
+ reg &= ~(GC_DCM01_CKS | GC_DCM01_RESV | GC_DCM01_SC);
+ reg |= sc << 8;
+ outreg(disp, GC_DCM1, reg);
+ dev_dbg(par->dev, "SC 0x%lx\n", sc);
+
+ /* disp dimension, format */
+ reg = pack(d_pitch(&fbi->var) / GC_L0M_L0W_UNIT,
+ (fbi->var.yres - 1));
+ if (fbi->var.bits_per_pixel == 16)
+ reg |= GC_L0M_L0C_16;
+ outreg(disp, GC_L0M, reg);
+
+ if (fbi->var.bits_per_pixel == 32) {
+ reg = inreg(disp, GC_L0EM);
+ outreg(disp, GC_L0EM, reg | GC_L0EM_L0EC_24);
+ }
+ outreg(disp, GC_WY_WX, 0);
+ reg = pack(fbi->var.yres - 1, fbi->var.xres);
+ outreg(disp, GC_WH_WW, reg);
+ outreg(disp, GC_L0OA0, 0);
+ outreg(disp, GC_L0DA0, 0);
+ outreg(disp, GC_L0DY_L0DX, 0);
+ outreg(disp, GC_L0WY_L0WX, 0);
+ outreg(disp, GC_L0WH_L0WW, reg);
+
+ /* both HW-cursors off */
+ reg = inreg(disp, GC_CPM_CUTC);
+ reg &= ~(GC_CPM_CEN0 | GC_CPM_CEN1);
+ outreg(disp, GC_CPM_CUTC, reg);
+
+ /* timings */
+ reg = pack(fbi->var.xres - 1, fbi->var.xres - 1);
+ outreg(disp, GC_HDB_HDP, reg);
+ reg = pack((fbi->var.yres - 1), vsp(&fbi->var));
+ outreg(disp, GC_VDP_VSP, reg);
+ reg = ((fbi->var.vsync_len - 1) << 24) |
+ pack((fbi->var.hsync_len - 1), hsp(&fbi->var));
+ outreg(disp, GC_VSW_HSW_HSP, reg);
+ outreg(disp, GC_HTP, pack(h_total(&fbi->var) - 1, 0));
+ outreg(disp, GC_VTR, pack(v_total(&fbi->var) - 1, 0));
+
+ /* display on */
+ reg = inreg(disp, GC_DCM1);
+ reg |= GC_DCM01_DEN | GC_DCM01_L0E;
+ reg &= ~GC_DCM01_ESY;
+ outreg(disp, GC_DCM1, reg);
+ return 0;
+}
+
+static int mb862xxfb_pan(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ struct mb862xxfb_par *par = info->par;
+ unsigned long reg;
+
+ reg = pack(var->yoffset, var->xoffset);
+ outreg(disp, GC_L0WY_L0WX, reg);
+
+ reg = pack(var->yres_virtual, var->xres_virtual);
+ outreg(disp, GC_L0WH_L0WW, reg);
+ return 0;
+}
+
+static int mb862xxfb_blank(int mode, struct fb_info *fbi)
+{
+ struct mb862xxfb_par *par = fbi->par;
+ unsigned long reg;
+
+ dev_dbg(fbi->dev, "blank mode=%d\n", mode);
+
+ switch (mode) {
+ case FB_BLANK_POWERDOWN:
+ reg = inreg(disp, GC_DCM1);
+ reg &= ~GC_DCM01_DEN;
+ outreg(disp, GC_DCM1, reg);
+ break;
+ case FB_BLANK_UNBLANK:
+ reg = inreg(disp, GC_DCM1);
+ reg |= GC_DCM01_DEN;
+ outreg(disp, GC_DCM1, reg);
+ break;
+ case FB_BLANK_NORMAL:
+ case FB_BLANK_VSYNC_SUSPEND:
+ case FB_BLANK_HSYNC_SUSPEND:
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+/* framebuffer ops */
+static struct fb_ops mb862xxfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = mb862xxfb_check_var,
+ .fb_set_par = mb862xxfb_set_par,
+ .fb_setcolreg = mb862xxfb_setcolreg,
+ .fb_blank = mb862xxfb_blank,
+ .fb_pan_display = mb862xxfb_pan,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
+/* initialize fb_info data */
+static int mb862xxfb_init_fbinfo(struct fb_info *fbi)
+{
+ struct mb862xxfb_par *par = fbi->par;
+ struct mb862xx_gc_mode *mode = par->gc_mode;
+ unsigned long reg;
+
+ fbi->fbops = &mb862xxfb_ops;
+ fbi->pseudo_palette = par->pseudo_palette;
+ fbi->screen_base = par->fb_base;
+ fbi->screen_size = par->mapped_vram;
+
+ strcpy(fbi->fix.id, DRV_NAME);
+ fbi->fix.smem_start = (unsigned long)par->fb_base_phys;
+ fbi->fix.mmio_start = (unsigned long)par->mmio_base_phys;
+ fbi->fix.mmio_len = par->mmio_len;
+ fbi->fix.accel = FB_ACCEL_NONE;
+ fbi->fix.type = FB_TYPE_PACKED_PIXELS;
+ fbi->fix.type_aux = 0;
+ fbi->fix.xpanstep = 1;
+ fbi->fix.ypanstep = 1;
+ fbi->fix.ywrapstep = 0;
+
+ reg = inreg(disp, GC_DCM1);
+ if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E) {
+ /* get the disp mode from active display cfg */
+ unsigned long sc = ((reg & GC_DCM01_SC) >> 8) + 1;
+ unsigned long hsp, vsp, ht, vt;
+
+ dev_dbg(par->dev, "using bootloader's disp. mode\n");
+ fbi->var.pixclock = (sc * 1000000) / par->refclk;
+ fbi->var.xres = (inreg(disp, GC_HDB_HDP) & 0x0fff) + 1;
+ reg = inreg(disp, GC_VDP_VSP);
+ fbi->var.yres = ((reg >> 16) & 0x0fff) + 1;
+ vsp = (reg & 0x0fff) + 1;
+ fbi->var.xres_virtual = fbi->var.xres;
+ fbi->var.yres_virtual = fbi->var.yres;
+ reg = inreg(disp, GC_L0EM);
+ if (reg & GC_L0EM_L0EC_24) {
+ fbi->var.bits_per_pixel = 32;
+ } else {
+ reg = inreg(disp, GC_L0M);
+ if (reg & GC_L0M_L0C_16)
+ fbi->var.bits_per_pixel = 16;
+ else
+ fbi->var.bits_per_pixel = 8;
+ }
+ reg = inreg(disp, GC_VSW_HSW_HSP);
+ fbi->var.hsync_len = ((reg & 0xff0000) >> 16) + 1;
+ fbi->var.vsync_len = ((reg & 0x3f000000) >> 24) + 1;
+ hsp = (reg & 0xffff) + 1;
+ ht = ((inreg(disp, GC_HTP) & 0xfff0000) >> 16) + 1;
+ fbi->var.right_margin = hsp - fbi->var.xres;
+ fbi->var.left_margin = ht - hsp - fbi->var.hsync_len;
+ vt = ((inreg(disp, GC_VTR) & 0xfff0000) >> 16) + 1;
+ fbi->var.lower_margin = vsp - fbi->var.yres;
+ fbi->var.upper_margin = vt - vsp - fbi->var.vsync_len;
+ } else if (mode) {
+ dev_dbg(par->dev, "using supplied mode\n");
+ fb_videomode_to_var(&fbi->var, (struct fb_videomode *)mode);
+ fbi->var.bits_per_pixel = mode->def_bpp ? mode->def_bpp : 8;
+ } else {
+ int ret;
+
+ ret = fb_find_mode(&fbi->var, fbi, "640x480-16@60",
+ NULL, 0, NULL, 16);
+ if (ret == 0 || ret == 4) {
+ dev_err(par->dev,
+ "failed to get initial mode\n");
+ return -EINVAL;
+ }
+ }
+
+ fbi->var.xoffset = 0;
+ fbi->var.yoffset = 0;
+ fbi->var.grayscale = 0;
+ fbi->var.nonstd = 0;
+ fbi->var.height = -1;
+ fbi->var.width = -1;
+ fbi->var.accel_flags = 0;
+ fbi->var.vmode = FB_VMODE_NONINTERLACED;
+ fbi->var.activate = FB_ACTIVATE_NOW;
+ fbi->flags = FBINFO_DEFAULT |
+#ifdef __BIG_ENDIAN
+ FBINFO_FOREIGN_ENDIAN |
+#endif
+ FBINFO_HWACCEL_XPAN |
+ FBINFO_HWACCEL_YPAN;
+
+ /* check and possibly fix bpp */
+ if ((fbi->fbops->fb_check_var)(&fbi->var, fbi))
+ dev_err(par->dev, "check_var() failed on initial setup?\n");
+
+ fbi->fix.visual = fbi->var.bits_per_pixel == 8 ?
+ FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
+ fbi->fix.line_length = (fbi->var.xres_virtual *
+ fbi->var.bits_per_pixel) / 8;
+ fbi->fix.smem_len = fbi->fix.line_length * fbi->var.yres_virtual;
+ return 0;
+}
+
+/*
+ * show some display controller and cursor registers
+ */
+static ssize_t mb862xxfb_show_dispregs(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct fb_info *fbi = dev_get_drvdata(dev);
+ struct mb862xxfb_par *par = fbi->par;
+ char *ptr = buf;
+ unsigned int reg;
+
+ for (reg = GC_DCM0; reg <= GC_L0DY_L0DX; reg += 4)
+ ptr += sprintf(ptr, "%08x = %08x\n",
+ reg, inreg(disp, reg));
+
+ for (reg = GC_CPM_CUTC; reg <= GC_CUY1_CUX1; reg += 4)
+ ptr += sprintf(ptr, "%08x = %08x\n",
+ reg, inreg(disp, reg));
+
+ for (reg = GC_DCM1; reg <= GC_L0WH_L0WW; reg += 4)
+ ptr += sprintf(ptr, "%08x = %08x\n",
+ reg, inreg(disp, reg));
+
+ for (reg = 0x400; reg <= 0x410; reg += 4)
+ ptr += sprintf(ptr, "geo %08x = %08x\n",
+ reg, inreg(geo, reg));
+
+ for (reg = 0x400; reg <= 0x410; reg += 4)
+ ptr += sprintf(ptr, "draw %08x = %08x\n",
+ reg, inreg(draw, reg));
+
+ for (reg = 0x440; reg <= 0x450; reg += 4)
+ ptr += sprintf(ptr, "draw %08x = %08x\n",
+ reg, inreg(draw, reg));
+
+ return ptr - buf;
+}
+
+static DEVICE_ATTR(dispregs, 0444, mb862xxfb_show_dispregs, NULL);
+
+irqreturn_t mb862xx_intr(int irq, void *dev_id)
+{
+ struct mb862xxfb_par *par = (struct mb862xxfb_par *) dev_id;
+ unsigned long reg_ist, mask;
+
+ if (!par)
+ return IRQ_NONE;
+
+ if (par->type == BT_CARMINE) {
+ /* Get Interrupt Status */
+ reg_ist = inreg(ctrl, GC_CTRL_STATUS);
+ mask = inreg(ctrl, GC_CTRL_INT_MASK);
+ if (reg_ist == 0)
+ return IRQ_HANDLED;
+
+ reg_ist &= mask;
+ if (reg_ist == 0)
+ return IRQ_HANDLED;
+
+ /* Clear interrupt status */
+ outreg(ctrl, 0x0, reg_ist);
+ } else {
+ /* Get status */
+ reg_ist = inreg(host, GC_IST);
+ mask = inreg(host, GC_IMASK);
+
+ reg_ist &= mask;
+ if (reg_ist == 0)
+ return IRQ_HANDLED;
+
+ /* Clear status */
+ outreg(host, GC_IST, ~reg_ist);
+ }
+ return IRQ_HANDLED;
+}
+
+#if defined(CONFIG_FB_MB862XX_LIME)
+/*
+ * GDC (Lime, Coral(B/Q), Mint, ...) on host bus
+ */
+static int mb862xx_gdc_init(struct mb862xxfb_par *par)
+{
+ unsigned long ccf, mmr;
+ unsigned long ver, rev;
+
+ if (!par)
+ return -ENODEV;
+
+#if defined(CONFIG_FB_PRE_INIT_FB)
+ par->pre_init = 1;
+#endif
+ par->host = par->mmio_base;
+ par->i2c = par->mmio_base + MB862XX_I2C_BASE;
+ par->disp = par->mmio_base + MB862XX_DISP_BASE;
+ par->cap = par->mmio_base + MB862XX_CAP_BASE;
+ par->draw = par->mmio_base + MB862XX_DRAW_BASE;
+ par->geo = par->mmio_base + MB862XX_GEO_BASE;
+ par->pio = par->mmio_base + MB862XX_PIO_BASE;
+
+ par->refclk = GC_DISP_REFCLK_400;
+
+ ver = inreg(host, GC_CID);
+ rev = inreg(pio, GC_REVISION);
+ if ((ver == 0x303) && (rev & 0xffffff00) == 0x20050100) {
+ dev_info(par->dev, "Fujitsu Lime v1.%d found\n",
+ (int)rev & 0xff);
+ par->type = BT_LIME;
+ ccf = par->gc_mode ? par->gc_mode->ccf : GC_CCF_COT_100;
+ mmr = par->gc_mode ? par->gc_mode->mmr : 0x414fb7f2;
+ } else {
+ dev_info(par->dev, "? GDC, CID/Rev.: 0x%lx/0x%lx \n", ver, rev);
+ return -ENODEV;
+ }
+
+ if (!par->pre_init) {
+ outreg(host, GC_CCF, ccf);
+ udelay(200);
+ outreg(host, GC_MMR, mmr);
+ udelay(10);
+ }
+
+ /* interrupt status */
+ outreg(host, GC_IST, 0);
+ outreg(host, GC_IMASK, GC_INT_EN);
+ return 0;
+}
+
+static int __devinit of_platform_mb862xx_probe(struct platform_device *ofdev)
+{
+ struct device_node *np = ofdev->dev.of_node;
+ struct device *dev = &ofdev->dev;
+ struct mb862xxfb_par *par;
+ struct fb_info *info;
+ struct resource res;
+ resource_size_t res_size;
+ unsigned long ret = -ENODEV;
+
+ if (of_address_to_resource(np, 0, &res)) {
+ dev_err(dev, "Invalid address\n");
+ return -ENXIO;
+ }
+
+ info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev);
+ if (info == NULL) {
+ dev_err(dev, "cannot allocate framebuffer\n");
+ return -ENOMEM;
+ }
+
+ par = info->par;
+ par->info = info;
+ par->dev = dev;
+
+ par->irq = irq_of_parse_and_map(np, 0);
+ if (par->irq == NO_IRQ) {
+ dev_err(dev, "failed to map irq\n");
+ ret = -ENODEV;
+ goto fbrel;
+ }
+
+ res_size = 1 + res.end - res.start;
+ par->res = request_mem_region(res.start, res_size, DRV_NAME);
+ if (par->res == NULL) {
+ dev_err(dev, "Cannot claim framebuffer/mmio\n");
+ ret = -ENXIO;
+ goto irqdisp;
+ }
+
+#if defined(CONFIG_SOCRATES)
+ par->gc_mode = &socrates_gc_mode;
+#endif
+
+ par->fb_base_phys = res.start;
+ par->mmio_base_phys = res.start + MB862XX_MMIO_BASE;
+ par->mmio_len = MB862XX_MMIO_SIZE;
+ if (par->gc_mode)
+ par->mapped_vram = par->gc_mode->max_vram;
+ else
+ par->mapped_vram = MB862XX_MEM_SIZE;
+
+ par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram);
+ if (par->fb_base == NULL) {
+ dev_err(dev, "Cannot map framebuffer\n");
+ goto rel_reg;
+ }
+
+ par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len);
+ if (par->mmio_base == NULL) {
+ dev_err(dev, "Cannot map registers\n");
+ goto fb_unmap;
+ }
+
+ dev_dbg(dev, "fb phys 0x%llx 0x%lx\n",
+ (u64)par->fb_base_phys, (ulong)par->mapped_vram);
+ dev_dbg(dev, "mmio phys 0x%llx 0x%lx, (irq = %d)\n",
+ (u64)par->mmio_base_phys, (ulong)par->mmio_len, par->irq);
+
+ if (mb862xx_gdc_init(par))
+ goto io_unmap;
+
+ if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED,
+ DRV_NAME, (void *)par)) {
+ dev_err(dev, "Cannot request irq\n");
+ goto io_unmap;
+ }
+
+ mb862xxfb_init_fbinfo(info);
+
+ if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) {
+ dev_err(dev, "Could not allocate cmap for fb_info.\n");
+ goto free_irq;
+ }
+
+ if ((info->fbops->fb_set_par)(info))
+ dev_err(dev, "set_var() failed on initial setup?\n");
+
+ if (register_framebuffer(info)) {
+ dev_err(dev, "failed to register framebuffer\n");
+ goto rel_cmap;
+ }
+
+ dev_set_drvdata(dev, info);
+
+ if (device_create_file(dev, &dev_attr_dispregs))
+ dev_err(dev, "Can't create sysfs regdump file\n");
+ return 0;
+
+rel_cmap:
+ fb_dealloc_cmap(&info->cmap);
+free_irq:
+ outreg(host, GC_IMASK, 0);
+ free_irq(par->irq, (void *)par);
+io_unmap:
+ iounmap(par->mmio_base);
+fb_unmap:
+ iounmap(par->fb_base);
+rel_reg:
+ release_mem_region(res.start, res_size);
+irqdisp:
+ irq_dispose_mapping(par->irq);
+fbrel:
+ dev_set_drvdata(dev, NULL);
+ framebuffer_release(info);
+ return ret;
+}
+
+static int __devexit of_platform_mb862xx_remove(struct platform_device *ofdev)
+{
+ struct fb_info *fbi = dev_get_drvdata(&ofdev->dev);
+ struct mb862xxfb_par *par = fbi->par;
+ resource_size_t res_size = 1 + par->res->end - par->res->start;
+ unsigned long reg;
+
+ dev_dbg(fbi->dev, "%s release\n", fbi->fix.id);
+
+ /* display off */
+ reg = inreg(disp, GC_DCM1);
+ reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E);
+ outreg(disp, GC_DCM1, reg);
+
+ /* disable interrupts */
+ outreg(host, GC_IMASK, 0);
+
+ free_irq(par->irq, (void *)par);
+ irq_dispose_mapping(par->irq);
+
+ device_remove_file(&ofdev->dev, &dev_attr_dispregs);
+
+ unregister_framebuffer(fbi);
+ fb_dealloc_cmap(&fbi->cmap);
+
+ iounmap(par->mmio_base);
+ iounmap(par->fb_base);
+
+ dev_set_drvdata(&ofdev->dev, NULL);
+ release_mem_region(par->res->start, res_size);
+ framebuffer_release(fbi);
+ return 0;
+}
+
+/*
+ * common types
+ */
+static struct of_device_id __devinitdata of_platform_mb862xx_tbl[] = {
+ { .compatible = "fujitsu,MB86276", },
+ { .compatible = "fujitsu,lime", },
+ { .compatible = "fujitsu,MB86277", },
+ { .compatible = "fujitsu,mint", },
+ { .compatible = "fujitsu,MB86293", },
+ { .compatible = "fujitsu,MB86294", },
+ { .compatible = "fujitsu,coral", },
+ { /* end */ }
+};
+
+static struct platform_driver of_platform_mb862xxfb_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_platform_mb862xx_tbl,
+ },
+ .probe = of_platform_mb862xx_probe,
+ .remove = __devexit_p(of_platform_mb862xx_remove),
+};
+#endif
+
+#if defined(CONFIG_FB_MB862XX_PCI_GDC)
+static int coralp_init(struct mb862xxfb_par *par)
+{
+ int cn, ver;
+
+ par->host = par->mmio_base;
+ par->i2c = par->mmio_base + MB862XX_I2C_BASE;
+ par->disp = par->mmio_base + MB862XX_DISP_BASE;
+ par->cap = par->mmio_base + MB862XX_CAP_BASE;
+ par->draw = par->mmio_base + MB862XX_DRAW_BASE;
+ par->geo = par->mmio_base + MB862XX_GEO_BASE;
+ par->pio = par->mmio_base + MB862XX_PIO_BASE;
+
+ par->refclk = GC_DISP_REFCLK_400;
+
+ if (par->mapped_vram >= 0x2000000) {
+ /* relocate gdc registers space */
+ writel(1, par->fb_base + MB862XX_MMIO_BASE + GC_RSW);
+ udelay(1); /* wait at least 20 bus cycles */
+ }
+
+ ver = inreg(host, GC_CID);
+ cn = (ver & GC_CID_CNAME_MSK) >> 8;
+ ver = ver & GC_CID_VERSION_MSK;
+ if (cn == 3) {
+ unsigned long reg;
+
+ dev_info(par->dev, "Fujitsu Coral-%s GDC Rev.%d found\n",\
+ (ver == 6) ? "P" : (ver == 8) ? "PA" : "?",
+ par->pdev->revision);
+ reg = inreg(disp, GC_DCM1);
+ if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E)
+ par->pre_init = 1;
+
+ if (!par->pre_init) {
+ outreg(host, GC_CCF, GC_CCF_CGE_166 | GC_CCF_COT_133);
+ udelay(200);
+ outreg(host, GC_MMR, GC_MMR_CORALP_EVB_VAL);
+ udelay(10);
+ }
+ /* Clear interrupt status */
+ outreg(host, GC_IST, 0);
+ } else {
+ return -ENODEV;
+ }
+
+ mb862xx_i2c_init(par);
+ return 0;
+}
+
+static int init_dram_ctrl(struct mb862xxfb_par *par)
+{
+ unsigned long i = 0;
+
+ /*
+ * Set io mode first! Spec. says IC may be destroyed
+ * if not set to SSTL2/LVCMOS before init.
+ */
+ outreg(dram_ctrl, GC_DCTL_IOCONT1_IOCONT0, GC_EVB_DCTL_IOCONT1_IOCONT0);
+
+ /* DRAM init */
+ outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD);
+ outreg(dram_ctrl, GC_DCTL_SETTIME1_EMODE, GC_EVB_DCTL_SETTIME1_EMODE);
+ outreg(dram_ctrl, GC_DCTL_REFRESH_SETTIME2,
+ GC_EVB_DCTL_REFRESH_SETTIME2);
+ outreg(dram_ctrl, GC_DCTL_RSV2_RSV1, GC_EVB_DCTL_RSV2_RSV1);
+ outreg(dram_ctrl, GC_DCTL_DDRIF2_DDRIF1, GC_EVB_DCTL_DDRIF2_DDRIF1);
+ outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES);
+
+ /* DLL reset done? */
+ while ((inreg(dram_ctrl, GC_DCTL_RSV0_STATES) & GC_DCTL_STATES_MSK)) {
+ udelay(GC_DCTL_INIT_WAIT_INTERVAL);
+ if (i++ > GC_DCTL_INIT_WAIT_CNT) {
+ dev_err(par->dev, "VRAM init failed.\n");
+ return -EINVAL;
+ }
+ }
+ outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD_AFT_RST);
+ outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES_AFT_RST);
+ return 0;
+}
+
+static int carmine_init(struct mb862xxfb_par *par)
+{
+ unsigned long reg;
+
+ par->ctrl = par->mmio_base + MB86297_CTRL_BASE;
+ par->i2c = par->mmio_base + MB86297_I2C_BASE;
+ par->disp = par->mmio_base + MB86297_DISP0_BASE;
+ par->disp1 = par->mmio_base + MB86297_DISP1_BASE;
+ par->cap = par->mmio_base + MB86297_CAP0_BASE;
+ par->cap1 = par->mmio_base + MB86297_CAP1_BASE;
+ par->draw = par->mmio_base + MB86297_DRAW_BASE;
+ par->dram_ctrl = par->mmio_base + MB86297_DRAMCTRL_BASE;
+ par->wrback = par->mmio_base + MB86297_WRBACK_BASE;
+
+ par->refclk = GC_DISP_REFCLK_533;
+
+ /* warm up */
+ reg = GC_CTRL_CLK_EN_DRAM | GC_CTRL_CLK_EN_2D3D | GC_CTRL_CLK_EN_DISP0;
+ outreg(ctrl, GC_CTRL_CLK_ENABLE, reg);
+
+ /* check for engine module revision */
+ if (inreg(draw, GC_2D3D_REV) == GC_RE_REVISION)
+ dev_info(par->dev, "Fujitsu Carmine GDC Rev.%d found\n",
+ par->pdev->revision);
+ else
+ goto err_init;
+
+ reg &= ~GC_CTRL_CLK_EN_2D3D;
+ outreg(ctrl, GC_CTRL_CLK_ENABLE, reg);
+
+ /* set up vram */
+ if (init_dram_ctrl(par) < 0)
+ goto err_init;
+
+ outreg(ctrl, GC_CTRL_INT_MASK, 0);
+ return 0;
+
+err_init:
+ outreg(ctrl, GC_CTRL_CLK_ENABLE, 0);
+ return -EINVAL;
+}
+
+static inline int mb862xx_pci_gdc_init(struct mb862xxfb_par *par)
+{
+ switch (par->type) {
+ case BT_CORALP:
+ return coralp_init(par);
+ case BT_CARMINE:
+ return carmine_init(par);
+ default:
+ return -ENODEV;
+ }
+}
+
+#define CHIP_ID(id) \
+ { PCI_DEVICE(PCI_VENDOR_ID_FUJITSU_LIMITED, id) }
+
+static struct pci_device_id mb862xx_pci_tbl[] __devinitdata = {
+ /* MB86295/MB86296 */
+ CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALP),
+ CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALPA),
+ /* MB86297 */
+ CHIP_ID(PCI_DEVICE_ID_FUJITSU_CARMINE),
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, mb862xx_pci_tbl);
+
+static int __devinit mb862xx_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct mb862xxfb_par *par;
+ struct fb_info *info;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ ret = pci_enable_device(pdev);
+ if (ret < 0) {
+ dev_err(dev, "Cannot enable PCI device\n");
+ goto out;
+ }
+
+ info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev);
+ if (!info) {
+ dev_err(dev, "framebuffer alloc failed\n");
+ ret = -ENOMEM;
+ goto dis_dev;
+ }
+
+ par = info->par;
+ par->info = info;
+ par->dev = dev;
+ par->pdev = pdev;
+ par->irq = pdev->irq;
+
+ ret = pci_request_regions(pdev, DRV_NAME);
+ if (ret < 0) {
+ dev_err(dev, "Cannot reserve region(s) for PCI device\n");
+ goto rel_fb;
+ }
+
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_FUJITSU_CORALP:
+ case PCI_DEVICE_ID_FUJITSU_CORALPA:
+ par->fb_base_phys = pci_resource_start(par->pdev, 0);
+ par->mapped_vram = CORALP_MEM_SIZE;
+ if (par->mapped_vram >= 0x2000000) {
+ par->mmio_base_phys = par->fb_base_phys +
+ MB862XX_MMIO_HIGH_BASE;
+ } else {
+ par->mmio_base_phys = par->fb_base_phys +
+ MB862XX_MMIO_BASE;
+ }
+ par->mmio_len = MB862XX_MMIO_SIZE;
+ par->type = BT_CORALP;
+ break;
+ case PCI_DEVICE_ID_FUJITSU_CARMINE:
+ par->fb_base_phys = pci_resource_start(par->pdev, 2);
+ par->mmio_base_phys = pci_resource_start(par->pdev, 3);
+ par->mmio_len = pci_resource_len(par->pdev, 3);
+ par->mapped_vram = CARMINE_MEM_SIZE;
+ par->type = BT_CARMINE;
+ break;
+ default:
+ /* should never occur */
+ goto rel_reg;
+ }
+
+ par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram);
+ if (par->fb_base == NULL) {
+ dev_err(dev, "Cannot map framebuffer\n");
+ goto rel_reg;
+ }
+
+ par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len);
+ if (par->mmio_base == NULL) {
+ dev_err(dev, "Cannot map registers\n");
+ ret = -EIO;
+ goto fb_unmap;
+ }
+
+ dev_dbg(dev, "fb phys 0x%llx 0x%lx\n",
+ (unsigned long long)par->fb_base_phys, (ulong)par->mapped_vram);
+ dev_dbg(dev, "mmio phys 0x%llx 0x%lx\n",
+ (unsigned long long)par->mmio_base_phys, (ulong)par->mmio_len);
+
+ if (mb862xx_pci_gdc_init(par))
+ goto io_unmap;
+
+ if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED | IRQF_SHARED,
+ DRV_NAME, (void *)par)) {
+ dev_err(dev, "Cannot request irq\n");
+ goto io_unmap;
+ }
+
+ mb862xxfb_init_fbinfo(info);
+
+ if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) {
+ dev_err(dev, "Could not allocate cmap for fb_info.\n");
+ ret = -ENOMEM;
+ goto free_irq;
+ }
+
+ if ((info->fbops->fb_set_par)(info))
+ dev_err(dev, "set_var() failed on initial setup?\n");
+
+ ret = register_framebuffer(info);
+ if (ret < 0) {
+ dev_err(dev, "failed to register framebuffer\n");
+ goto rel_cmap;
+ }
+
+ pci_set_drvdata(pdev, info);
+
+ if (device_create_file(dev, &dev_attr_dispregs))
+ dev_err(dev, "Can't create sysfs regdump file\n");
+
+ if (par->type == BT_CARMINE)
+ outreg(ctrl, GC_CTRL_INT_MASK, GC_CARMINE_INT_EN);
+ else
+ outreg(host, GC_IMASK, GC_INT_EN);
+
+ return 0;
+
+rel_cmap:
+ fb_dealloc_cmap(&info->cmap);
+free_irq:
+ free_irq(par->irq, (void *)par);
+io_unmap:
+ iounmap(par->mmio_base);
+fb_unmap:
+ iounmap(par->fb_base);
+rel_reg:
+ pci_release_regions(pdev);
+rel_fb:
+ framebuffer_release(info);
+dis_dev:
+ pci_disable_device(pdev);
+out:
+ return ret;
+}
+
+static void __devexit mb862xx_pci_remove(struct pci_dev *pdev)
+{
+ struct fb_info *fbi = pci_get_drvdata(pdev);
+ struct mb862xxfb_par *par = fbi->par;
+ unsigned long reg;
+
+ dev_dbg(fbi->dev, "%s release\n", fbi->fix.id);
+
+ /* display off */
+ reg = inreg(disp, GC_DCM1);
+ reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E);
+ outreg(disp, GC_DCM1, reg);
+
+ if (par->type == BT_CARMINE) {
+ outreg(ctrl, GC_CTRL_INT_MASK, 0);
+ outreg(ctrl, GC_CTRL_CLK_ENABLE, 0);
+ } else {
+ outreg(host, GC_IMASK, 0);
+ }
+
+ mb862xx_i2c_exit(par);
+
+ device_remove_file(&pdev->dev, &dev_attr_dispregs);
+
+ pci_set_drvdata(pdev, NULL);
+ unregister_framebuffer(fbi);
+ fb_dealloc_cmap(&fbi->cmap);
+
+ free_irq(par->irq, (void *)par);
+ iounmap(par->mmio_base);
+ iounmap(par->fb_base);
+
+ pci_release_regions(pdev);
+ framebuffer_release(fbi);
+ pci_disable_device(pdev);
+}
+
+static struct pci_driver mb862xxfb_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = mb862xx_pci_tbl,
+ .probe = mb862xx_pci_probe,
+ .remove = __devexit_p(mb862xx_pci_remove),
+};
+#endif
+
+static int __devinit mb862xxfb_init(void)
+{
+ int ret = -ENODEV;
+
+#if defined(CONFIG_FB_MB862XX_LIME)
+ ret = platform_driver_register(&of_platform_mb862xxfb_driver);
+#endif
+#if defined(CONFIG_FB_MB862XX_PCI_GDC)
+ ret = pci_register_driver(&mb862xxfb_pci_driver);
+#endif
+ return ret;
+}
+
+static void __exit mb862xxfb_exit(void)
+{
+#if defined(CONFIG_FB_MB862XX_LIME)
+ platform_driver_unregister(&of_platform_mb862xxfb_driver);
+#endif
+#if defined(CONFIG_FB_MB862XX_PCI_GDC)
+ pci_unregister_driver(&mb862xxfb_pci_driver);
+#endif
+}
+
+module_init(mb862xxfb_init);
+module_exit(mb862xxfb_exit);
+
+MODULE_DESCRIPTION("Fujitsu MB862xx Framebuffer driver");
+MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
+MODULE_LICENSE("GPL v2");
projects / mirror_ubuntu-bionic-kernel.git / commitdiff