diff options
-rw-r--r-- | drivers/video/Kconfig | 6 | ||||
-rw-r--r-- | drivers/video/i810/Makefile | 5 | ||||
-rw-r--r-- | drivers/video/i810/i810-i2c.c | 257 | ||||
-rw-r--r-- | drivers/video/i810/i810.h | 13 | ||||
-rw-r--r-- | drivers/video/i810/i810_main.c | 177 | ||||
-rw-r--r-- | drivers/video/i810/i810_main.h | 16 |
6 files changed, 429 insertions, 45 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index e27aefd49ea..f8c341d48ca 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -751,6 +751,12 @@ config FB_I810_GTF If unsure, say N. +config FB_I810_I2C + bool "Enable DDC Support" + depends on FB_I810 && I2C && FB_I810_GTF + select I2C_ALGOBIT + help + config FB_INTEL tristate "Intel 830M/845G/852GM/855GM/865G support (EXPERIMENTAL)" depends on FB && EXPERIMENTAL && PCI && X86 && !X86_64 diff --git a/drivers/video/i810/Makefile b/drivers/video/i810/Makefile index 794ae76c7c4..96e08c8ded9 100644 --- a/drivers/video/i810/Makefile +++ b/drivers/video/i810/Makefile @@ -4,7 +4,6 @@ obj-$(CONFIG_FB_I810) += i810fb.o - i810fb-objs := i810_main.o i810_accel.o ifdef CONFIG_FB_I810_GTF @@ -12,3 +11,7 @@ i810fb-objs += i810_gtf.o else i810fb-objs += i810_dvt.o endif + +ifdef CONFIG_FB_I810_I2C +i810fb-objs += i810-i2c.o +endif diff --git a/drivers/video/i810/i810-i2c.c b/drivers/video/i810/i810-i2c.c new file mode 100644 index 00000000000..fda53aac1fc --- /dev/null +++ b/drivers/video/i810/i810-i2c.c @@ -0,0 +1,257 @@ + /*-*- linux-c -*- + * linux/drivers/video/i810-i2c.c -- Intel 810/815 I2C support + * + * Copyright (C) 2004 Antonino Daplas<adaplas@pol.net> + * All Rights Reserved + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/fb.h> +#include "i810.h" +#include "i810_regs.h" +#include "../edid.h" + +#define I810_DDC 0x50 +/* bit locations in the registers */ +#define SCL_DIR_MASK 0x0001 +#define SCL_DIR 0x0002 +#define SCL_VAL_MASK 0x0004 +#define SCL_VAL_OUT 0x0008 +#define SCL_VAL_IN 0x0010 +#define SDA_DIR_MASK 0x0100 +#define SDA_DIR 0x0200 +#define SDA_VAL_MASK 0x0400 +#define SDA_VAL_OUT 0x0800 +#define SDA_VAL_IN 0x1000 + +#define DEBUG /* define this for verbose EDID parsing output */ + +#ifdef DEBUG +#define DPRINTK(fmt, args...) printk(fmt,## args) +#else +#define DPRINTK(fmt, args...) +#endif + +static void i810i2c_setscl(void *data, int state) +{ + struct i810fb_i2c_chan *chan = (struct i810fb_i2c_chan *)data; + struct i810fb_par *par = chan->par; + u8 *mmio = par->mmio_start_virtual; + + i810_writel(mmio, GPIOB, (state ? SCL_VAL_OUT : 0) | SCL_DIR | + SCL_DIR_MASK | SCL_VAL_MASK); + i810_readl(mmio, GPIOB); /* flush posted write */ +} + +static void i810i2c_setsda(void *data, int state) +{ + struct i810fb_i2c_chan *chan = (struct i810fb_i2c_chan *)data; + struct i810fb_par *par = chan->par; + u8 *mmio = par->mmio_start_virtual; + + i810_writel(mmio, GPIOB, (state ? SDA_VAL_OUT : 0) | SDA_DIR | + SDA_DIR_MASK | SDA_VAL_MASK); + i810_readl(mmio, GPIOB); /* flush posted write */ +} + +static int i810i2c_getscl(void *data) +{ + struct i810fb_i2c_chan *chan = (struct i810fb_i2c_chan *)data; + struct i810fb_par *par = chan->par; + u8 *mmio = par->mmio_start_virtual; + + i810_writel(mmio, GPIOB, SCL_DIR_MASK); + i810_writel(mmio, GPIOB, 0); + return (0 != (i810_readl(mmio, GPIOB) & SCL_VAL_IN)); +} + +static int i810i2c_getsda(void *data) +{ + struct i810fb_i2c_chan *chan = (struct i810fb_i2c_chan *)data; + struct i810fb_par *par = chan->par; + u8 *mmio = par->mmio_start_virtual; + + i810_writel(mmio, GPIOB, SDA_DIR_MASK); + i810_writel(mmio, GPIOB, 0); + return (0 != (i810_readl(mmio, GPIOB) & SDA_VAL_IN)); +} + +static void i810ddc_setscl(void *data, int state) +{ + struct i810fb_i2c_chan *chan = (struct i810fb_i2c_chan *)data; + struct i810fb_par *par = chan->par; + u8 *mmio = par->mmio_start_virtual; + + i810_writel(mmio, GPIOA, (state ? SCL_VAL_OUT : 0) | SCL_DIR | + SCL_DIR_MASK | SCL_VAL_MASK); + i810_readl(mmio, GPIOA); /* flush posted write */ +} + +static void i810ddc_setsda(void *data, int state) +{ + struct i810fb_i2c_chan *chan = (struct i810fb_i2c_chan *)data; + struct i810fb_par *par = chan->par; + u8 *mmio = par->mmio_start_virtual; + + i810_writel(mmio, GPIOA, (state ? SDA_VAL_OUT : 0) | SDA_DIR | + SDA_DIR_MASK | SDA_VAL_MASK); + i810_readl(mmio, GPIOA); /* flush posted write */ +} + +static int i810ddc_getscl(void *data) +{ + struct i810fb_i2c_chan *chan = (struct i810fb_i2c_chan *)data; + struct i810fb_par *par = chan->par; + u8 *mmio = par->mmio_start_virtual; + + i810_writel(mmio, GPIOA, SCL_DIR_MASK); + i810_writel(mmio, GPIOA, 0); + return (0 != (i810_readl(mmio, GPIOA) & SCL_VAL_IN)); +} + +static int i810ddc_getsda(void *data) +{ + struct i810fb_i2c_chan *chan = (struct i810fb_i2c_chan *)data; + struct i810fb_par *par = chan->par; + u8 *mmio = par->mmio_start_virtual; + + i810_writel(mmio, GPIOA, SDA_DIR_MASK); + i810_writel(mmio, GPIOA, 0); + return (0 != (i810_readl(mmio, GPIOA) & SDA_VAL_IN)); +} + +#define I2C_ALGO_DDC_I810 0x0e0000 +#define I2C_ALGO_I2C_I810 0x0f0000 +static int i810_setup_i2c_bus(struct i810fb_i2c_chan *chan, const char *name, + int conn) +{ + int rc; + + strcpy(chan->adapter.name, name); + chan->adapter.owner = THIS_MODULE; + chan->adapter.algo_data = &chan->algo; + chan->adapter.dev.parent = &chan->par->dev->dev; + switch (conn) { + case 1: + chan->adapter.id = I2C_ALGO_DDC_I810; + chan->algo.setsda = i810ddc_setsda; + chan->algo.setscl = i810ddc_setscl; + chan->algo.getsda = i810ddc_getsda; + chan->algo.getscl = i810ddc_getscl; + break; + case 2: + chan->adapter.id = I2C_ALGO_I2C_I810; + chan->algo.setsda = i810i2c_setsda; + chan->algo.setscl = i810i2c_setscl; + chan->algo.getsda = i810i2c_getsda; + chan->algo.getscl = i810i2c_getscl; + break; + } + chan->algo.udelay = 10; + chan->algo.mdelay = 10; + chan->algo.timeout = (HZ/2); + chan->algo.data = chan; + + i2c_set_adapdata(&chan->adapter, chan); + + /* Raise SCL and SDA */ + chan->algo.setsda(chan, 1); + chan->algo.setscl(chan, 1); + udelay(20); + + rc = i2c_bit_add_bus(&chan->adapter); + if (rc == 0) + dev_dbg(&chan->par->dev->dev, "I2C bus %s registered.\n",name); + else + dev_warn(&chan->par->dev->dev, "Failed to register I2C bus " + "%s.\n", name); + return rc; +} + +void i810_create_i2c_busses(struct i810fb_par *par) +{ + par->chan[0].par = par; + par->chan[1].par = par; + i810_setup_i2c_bus(&par->chan[0], "I810-DDC", 1); + i810_setup_i2c_bus(&par->chan[1], "I810-I2C", 2); +} + +void i810_delete_i2c_busses(struct i810fb_par *par) +{ + if (par->chan[0].par) + i2c_bit_del_bus(&par->chan[0].adapter); + par->chan[0].par = NULL; + if (par->chan[1].par) + i2c_bit_del_bus(&par->chan[1].adapter); + par->chan[1].par = NULL; +} + +static u8 *i810_do_probe_i2c_edid(struct i810fb_i2c_chan *chan) +{ + u8 start = 0x0; + struct i2c_msg msgs[] = { + { + .addr = I810_DDC, + .len = 1, + .buf = &start, + }, { + .addr = I810_DDC, + .flags = I2C_M_RD, + .len = EDID_LENGTH, + }, + }; + u8 *buf; + + buf = kmalloc(EDID_LENGTH, GFP_KERNEL); + if (!buf) { + DPRINTK("i810-i2c: Failed to allocate memory\n"); + return NULL; + } + msgs[1].buf = buf; + + if (i2c_transfer(&chan->adapter, msgs, 2) == 2) { + DPRINTK("i810-i2c: I2C Transfer successful\n"); + return buf; + } + DPRINTK("i810-i2c: Unable to read EDID block.\n"); + kfree(buf); + return NULL; +} + +int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid, int conn) +{ + struct i810fb_par *par = info->par; + u8 *edid = NULL; + int i; + + DPRINTK("i810-i2c: Probe DDC%i Bus\n", conn); + if (conn < 3) { + for (i = 0; i < 3; i++) { + /* Do the real work */ + edid = i810_do_probe_i2c_edid(&par->chan[conn-1]); + if (edid) + break; + } + } else { + DPRINTK("i810-i2c: Getting EDID from BIOS\n"); + edid = kmalloc(EDID_LENGTH, GFP_KERNEL); + if (edid) + memcpy(edid, fb_firmware_edid(info->device), + EDID_LENGTH); + } + + if (out_edid) + *out_edid = edid; + + return (edid) ? 0 : 1; +} + + diff --git a/drivers/video/i810/i810.h b/drivers/video/i810/i810.h index f59af3335cc..d48949ceaac 100644 --- a/drivers/video/i810/i810.h +++ b/drivers/video/i810/i810.h @@ -16,6 +16,9 @@ #include <linux/list.h> #include <linux/agp_backend.h> #include <linux/fb.h> +#include <linux/i2c.h> +#include <linux/i2c-id.h> +#include <linux/i2c-algo-bit.h> #include <video/vga.h> /* Fence */ @@ -240,6 +243,14 @@ struct state_registers { u8 cr39, cr41, cr70, sr01, msr; }; +struct i810fb_par; + +struct i810fb_i2c_chan { + struct i810fb_par *par; + struct i2c_adapter adapter; + struct i2c_algo_bit_data algo; +}; + struct i810fb_par { struct mode_registers regs; struct state_registers hw_state; @@ -251,10 +262,12 @@ struct i810fb_par { struct heap_data iring; struct heap_data cursor_heap; struct vgastate state; + struct i810fb_i2c_chan chan[2]; atomic_t use_count; u32 pseudo_palette[17]; unsigned long mmio_start_phys; u8 __iomem *mmio_start_virtual; + u8 *edid; u32 pitch; u32 pixconf; u32 watermark; diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c index d07b1f203fc..082ddd2089a 100644 --- a/drivers/video/i810/i810_main.c +++ b/drivers/video/i810/i810_main.c @@ -92,20 +92,21 @@ static struct pci_driver i810fb_driver = { .resume = i810fb_resume, }; -static int vram __initdata = 4; -static int bpp __initdata = 8; -static int mtrr __initdata = 0; -static int accel __initdata = 0; -static int hsync1 __initdata = 0; -static int hsync2 __initdata = 0; -static int vsync1 __initdata = 0; -static int vsync2 __initdata = 0; -static int xres __initdata = 640; -static int yres __initdata = 480; -static int vyres __initdata = 0; -static int sync __initdata = 0; -static int ext_vga __initdata = 0; -static int dcolor __initdata = 0; +static char *mode_option __devinitdata = NULL; +static int vram __devinitdata = 4; +static int bpp __devinitdata = 8; +static int mtrr __devinitdata = 0; +static int accel __devinitdata = 0; +static int hsync1 __devinitdata = 0; +static int hsync2 __devinitdata = 0; +static int vsync1 __devinitdata = 0; +static int vsync2 __devinitdata = 0; +static int xres __devinitdata = 640; +static int yres __devinitdata = 480; +static int vyres __devinitdata = 0; +static int sync __devinitdata = 0; +static int ext_vga __devinitdata = 0; +static int dcolor __devinitdata = 0; /*------------------------------------------------------------*/ @@ -947,31 +948,24 @@ static int i810_check_params(struct fb_var_screeninfo *var, struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; - int line_length, vidmem; - u32 xres, yres, vxres, vyres; - - xres = var->xres; - yres = var->yres; - vxres = var->xres_virtual; - vyres = var->yres_virtual; - + int line_length, vidmem, mode_valid = 0; + u32 vyres = var->yres_virtual, vxres = var->xres_virtual; /* * Memory limit */ - line_length = get_line_length(par, vxres, - var->bits_per_pixel); - + line_length = get_line_length(par, vxres, var->bits_per_pixel); vidmem = line_length*vyres; + if (vidmem > par->fb.size) { vyres = par->fb.size/line_length; - if (vyres < yres) { + if (vyres < var->yres) { vyres = yres; vxres = par->fb.size/vyres; vxres /= var->bits_per_pixel >> 3; line_length = get_line_length(par, vxres, var->bits_per_pixel); vidmem = line_length * yres; - if (vxres < xres) { + if (vxres < var->xres) { printk("i810fb: required video memory, " "%d bytes, for %dx%d-%d (virtual) " "is out of range\n", @@ -981,6 +975,10 @@ static int i810_check_params(struct fb_var_screeninfo *var, } } } + + var->xres_virtual = vxres; + var->yres_virtual = vyres; + /* * Monitor limit */ @@ -996,25 +994,39 @@ static int i810_check_params(struct fb_var_screeninfo *var, info->monspecs.dclkmax = 204000000; break; } + info->monspecs.dclkmin = 15000000; - if (fb_validate_mode(var, info)) { + if (!fb_validate_mode(var, info)) + mode_valid = 1; + +#ifdef CONFIG_FB_I810_I2C + if (!mode_valid && info->monspecs.gtf && + !fb_get_mode(FB_MAXTIMINGS, 0, var, info)) + mode_valid = 1; + + if (!mode_valid && info->monspecs.modedb_len) { + struct fb_videomode *mode; + + mode = fb_find_best_mode(var, &info->modelist); + if (mode) { + fb_videomode_to_var(var, mode); + mode_valid = 1; + } + } +#endif + if (!mode_valid && info->monspecs.modedb_len == 0) { if (fb_get_mode(FB_MAXTIMINGS, 0, var, info)) { int default_sync = (info->monspecs.hfmin-HFMIN) - |(info->monspecs.hfmax-HFMAX) - |(info->monspecs.vfmin-VFMIN) - |(info->monspecs.vfmax-VFMAX); + |(info->monspecs.hfmax-HFMAX) + |(info->monspecs.vfmin-VFMIN) + |(info->monspecs.vfmax-VFMAX); printk("i810fb: invalid video mode%s\n", - default_sync ? "" : - ". Specifying vsyncN/hsyncN parameters may help"); - return -EINVAL; + default_sync ? "" : ". Specifying " + "vsyncN/hsyncN parameters may help"); } } - - var->xres = xres; - var->yres = yres; - var->xres_virtual = vxres; - var->yres_virtual = vyres; + return 0; } @@ -1812,8 +1824,72 @@ i810_allocate_pci_resource(struct i810fb_par *par, return 0; } +static void __devinit i810fb_find_init_mode(struct fb_info *info) +{ + struct fb_videomode mode; + struct fb_var_screeninfo var; + struct fb_monspecs *specs = NULL; + int found = 0; +#ifdef CONFIG_FB_I810_I2C + int i; + int err; + struct i810fb_par *par = info->par; +#endif + + INIT_LIST_HEAD(&info->modelist); + memset(&mode, 0, sizeof(struct fb_videomode)); + var = info->var; +#ifdef CONFIG_FB_I810_I2C + i810_create_i2c_busses(par); + + for (i = 0; i < 3; i++) { + err = i810_probe_i2c_connector(info, &par->edid, i+1); + if (!err) + break; + } + + if (!err) + printk("i810fb_init_pci: DDC probe successful\n"); + + fb_edid_to_monspecs(par->edid, &info->monspecs); + + if (info->monspecs.modedb == NULL) + printk("i810fb_init_pci: Unable to get Mode Database\n"); + + specs = &info->monspecs; + fb_videomode_to_modelist(specs->modedb, specs->modedb_len, + &info->modelist); + if (specs->modedb != NULL) { + if (specs->misc & FB_MISC_1ST_DETAIL) { + for (i = 0; i < specs->modedb_len; i++) { + if (specs->modedb[i].flag & FB_MODE_IS_FIRST) { + mode = specs->modedb[i]; + found = 1; + break; + } + } + } + + if (!found) { + mode = specs->modedb[0]; + found = 1; + } + + fb_videomode_to_var(&var, &mode); + } +#endif + if (mode_option) + fb_find_mode(&var, info, mode_option, specs->modedb, + specs->modedb_len, (found) ? &mode : NULL, + info->var.bits_per_pixel); + + info->var = var; + fb_destroy_modedb(specs->modedb); + specs->modedb = NULL; +} + #ifndef MODULE -static int __init i810fb_setup(char *options) +static int __devinit i810fb_setup(char *options) { char *this_opt, *suffix = NULL; @@ -1855,6 +1931,8 @@ static int __init i810fb_setup(char *options) vsync2 = simple_strtoul(this_opt+7, NULL, 0); else if (!strncmp(this_opt, "dcolor", 6)) dcolor = 1; + else + mode_option = this_opt; } return 0; } @@ -1865,6 +1943,7 @@ static int __devinit i810fb_init_pci (struct pci_dev *dev, { struct fb_info *info; struct i810fb_par *par = NULL; + struct fb_videomode mode; int i, err = -1, vfreq, hfreq, pixclock; i = 0; @@ -1873,7 +1952,7 @@ static int __devinit i810fb_init_pci (struct pci_dev *dev, if (!info) return -ENOMEM; - par = (struct i810fb_par *) info->par; + par = info->par; par->dev = dev; if (!(info->pixmap.addr = kmalloc(8*1024, GFP_KERNEL))) { @@ -1904,15 +1983,20 @@ static int __devinit i810fb_init_pci (struct pci_dev *dev, info->fbops = &par->i810fb_ops; info->pseudo_palette = par->pseudo_palette; fb_alloc_cmap(&info->cmap, 256, 0); + i810fb_find_init_mode(info); if ((err = info->fbops->fb_check_var(&info->var, info))) { i810fb_release_resource(info, par); return err; } + + fb_var_to_videomode(&mode, &info->var); + fb_add_videomode(&mode, &info->modelist); encode_fix(&info->fix, info); i810fb_init_ringbuffer(info); err = register_framebuffer(info); + if (err < 0) { i810fb_release_resource(info, par); printk("i810fb_init: cannot register framebuffer device\n"); @@ -1951,6 +2035,8 @@ static void i810fb_release_resource(struct fb_info *info, struct gtt_data *gtt = &par->i810_gtt; unset_mtrr(par); + i810_delete_i2c_busses(par); + if (par->i810_gtt.i810_cursor_memory) agp_free_memory(gtt->i810_cursor_memory); if (par->i810_gtt.i810_fb_memory) @@ -1960,7 +2046,8 @@ static void i810fb_release_resource(struct fb_info *info, iounmap(par->mmio_start_virtual); if (par->aperture.virtual) iounmap(par->aperture.virtual); - + if (par->edid) + kfree(par->edid); if (par->res_flags & FRAMEBUFFER_REQ) release_mem_region(par->aperture.physical, par->aperture.size); @@ -1986,7 +2073,7 @@ static void __exit i810fb_remove_pci(struct pci_dev *dev) } #ifndef MODULE -static int __init i810fb_init(void) +static int __devinit i810fb_init(void) { char *option = NULL; @@ -2004,7 +2091,7 @@ static int __init i810fb_init(void) #ifdef MODULE -static int __init i810fb_init(void) +static int __devinit i810fb_init(void) { hsync1 *= 1000; hsync2 *= 1000; @@ -2052,6 +2139,8 @@ MODULE_PARM_DESC(sync, "wait for accel engine to finish drawing" module_param(dcolor, bool, 0); MODULE_PARM_DESC(dcolor, "use DirectColor visuals" " (default = 0 = TrueColor)"); +module_param(mode_option, charp, 0); +MODULE_PARM_DESC(mode_option, "Specify initial video mode"); MODULE_AUTHOR("Tony A. Daplas"); MODULE_DESCRIPTION("Framebuffer device for the Intel 810/815 and" diff --git a/drivers/video/i810/i810_main.h b/drivers/video/i810/i810_main.h index 43b4297b4d4..06072a6466f 100644 --- a/drivers/video/i810/i810_main.h +++ b/drivers/video/i810/i810_main.h @@ -83,6 +83,22 @@ extern int i810fb_sync (struct fb_info *p); extern void i810fb_init_ringbuffer(struct fb_info *info); extern void i810fb_load_front (u32 offset, struct fb_info *info); +#ifdef CONFIG_FB_I810_I2C +/* I2C */ +extern int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid, + int conn); +extern void i810_create_i2c_busses(struct i810fb_par *par); +extern void i810_delete_i2c_busses(struct i810fb_par *par); +#else +static inline int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid, + int conn) +{ + return 1; +} +static inline void i810_create_i2c_busses(struct i810fb_par *par) { } +static inline void i810_delete_i2c_busses(struct i810fb_par *par) { } +#endif + /* Conditionals */ #ifdef CONFIG_X86 inline void flush_cache(void) |