diff options
author | Maciej W. Rozycki <macro@linux-mips.org> | 2007-05-08 07:37:48 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 18:15:27 (GMT) |
commit | 86c6f7d08b2868ba7cc1ef509c76ee9e9266af40 (patch) | |
tree | 0054449648223eada54e451f4e29dd8d09e9fd6c /drivers | |
parent | 9a268a629be4c15ed85c88a61d712d92aa943847 (diff) | |
download | linux-fsl-qoriq-86c6f7d08b2868ba7cc1ef509c76ee9e9266af40.tar.xz |
tgafb: TURBOchannel support
This is support for the TC variations of the TGA boards (properly known as
SFB+ or Smart Frame Buffer Plus boards). The 8-plane SFB+ board uses the
Bt459 RAMDAC (unlike its PCI TGA counterpart, which uses the Bt485), so
bits have been added to support this chip as well.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: James Simmons <jsimmons@infradead.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/video/Kconfig | 20 | ||||
-rw-r--r-- | drivers/video/tgafb.c | 290 |
2 files changed, 254 insertions, 56 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 0aeab4e..bc9a12b 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -525,15 +525,25 @@ config FB_HP300 default y config FB_TGA - tristate "TGA framebuffer support" - depends on FB && ALPHA + tristate "TGA/SFB+ framebuffer support" + depends on FB && (ALPHA || TC) select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT select BITREVERSE - help - This is the frame buffer device driver for generic TGA graphic - cards. Say Y if you have one of those. + ---help--- + This is the frame buffer device driver for generic TGA and SFB+ + graphic cards. These include DEC ZLXp-E1, -E2 and -E3 PCI cards, + also known as PBXGA-A, -B and -C, and DEC ZLX-E1, -E2 and -E3 + TURBOchannel cards, also known as PMAGD-A, -B and -C. + + Due to hardware limitations ZLX-E2 and E3 cards are not supported + for DECstation 5000/200 systems. Additionally due to firmware + limitations these cards may cause troubles with booting DECstation + 5000/240 and /260 systems, but are fully supported under Linux if + you manage to get it going. ;-) + + Say Y if you have one of those. config FB_VESA bool "VESA VGA graphics support" diff --git a/drivers/video/tgafb.c b/drivers/video/tgafb.c index 7478d0e..5345fe0 100644 --- a/drivers/video/tgafb.c +++ b/drivers/video/tgafb.c @@ -5,27 +5,45 @@ * Copyright (C) 1997 Geert Uytterhoeven * Copyright (C) 1999,2000 Martin Lucina, Tom Zerucha * Copyright (C) 2002 Richard Henderson + * Copyright (C) 2006 Maciej W. Rozycki * * 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/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/slab.h> +#include <linux/bitrev.h> #include <linux/delay.h> -#include <linux/init.h> +#include <linux/device.h> +#include <linux/errno.h> #include <linux/fb.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/module.h> #include <linux/pci.h> #include <linux/selection.h> -#include <linux/bitrev.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/tc.h> + #include <asm/io.h> + #include <video/tgafb.h> +#ifdef CONFIG_PCI +#define TGA_BUS_PCI(dev) (dev->bus == &pci_bus_type) +#else +#define TGA_BUS_PCI(dev) 0 +#endif + +#ifdef CONFIG_TC +#define TGA_BUS_TC(dev) (dev->bus == &tc_bus_type) +#else +#define TGA_BUS_TC(dev) 0 +#endif + /* * Local functions. */ @@ -42,12 +60,16 @@ static void tgafb_imageblit(struct fb_info *, const struct fb_image *); static void tgafb_fillrect(struct fb_info *, const struct fb_fillrect *); static void tgafb_copyarea(struct fb_info *, const struct fb_copyarea *); -static int __devinit tgafb_pci_register(struct pci_dev *, - const struct pci_device_id *); -static void __devexit tgafb_pci_unregister(struct pci_dev *); +static int __devinit tgafb_register(struct device *dev); +static void __devexit tgafb_unregister(struct device *dev); + +static const char *mode_option; +static const char *mode_option_pci = "640x480@60"; +static const char *mode_option_tc = "1280x1024@72"; -static const char *mode_option = "640x480@60"; +static struct pci_driver tgafb_pci_driver; +static struct tc_driver tgafb_tc_driver; /* * Frame buffer operations @@ -65,9 +87,13 @@ static struct fb_ops tgafb_ops = { }; +#ifdef CONFIG_PCI /* * PCI registration operations */ +static int __devinit tgafb_pci_register(struct pci_dev *, + const struct pci_device_id *); +static void __devexit tgafb_pci_unregister(struct pci_dev *); static struct pci_device_id const tgafb_pci_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TGA) }, @@ -75,13 +101,68 @@ static struct pci_device_id const tgafb_pci_table[] = { }; MODULE_DEVICE_TABLE(pci, tgafb_pci_table); -static struct pci_driver tgafb_driver = { +static struct pci_driver tgafb_pci_driver = { .name = "tgafb", .id_table = tgafb_pci_table, .probe = tgafb_pci_register, .remove = __devexit_p(tgafb_pci_unregister), }; +static int __devinit +tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + return tgafb_register(&pdev->dev); +} + +static void __devexit +tgafb_pci_unregister(struct pci_dev *pdev) +{ + tgafb_unregister(&pdev->dev); +} +#endif /* CONFIG_PCI */ + +#ifdef CONFIG_TC +/* + * TC registration operations + */ +static int __devinit tgafb_tc_register(struct device *); +static int __devexit tgafb_tc_unregister(struct device *); + +static struct tc_device_id const tgafb_tc_table[] = { + { "DEC ", "PMAGD-AA" }, + { "DEC ", "PMAGD " }, + { } +}; +MODULE_DEVICE_TABLE(tc, tgafb_tc_table); + +static struct tc_driver tgafb_tc_driver = { + .id_table = tgafb_tc_table, + .driver = { + .name = "tgafb", + .bus = &tc_bus_type, + .probe = tgafb_tc_register, + .remove = __devexit_p(tgafb_tc_unregister), + }, +}; + +static int __devinit +tgafb_tc_register(struct device *dev) +{ + int status = tgafb_register(dev); + if (!status) + get_device(dev); + return status; +} + +static int __devexit +tgafb_tc_unregister(struct device *dev) +{ + put_device(dev); + tgafb_unregister(dev); + return 0; +} +#endif /* CONFIG_TC */ + /** * tgafb_check_var - Optional function. Validates a var passed in. @@ -132,10 +213,10 @@ static int tgafb_set_par(struct fb_info *info) { static unsigned int const deep_presets[4] = { - 0x00014000, - 0x0001440d, + 0x00004000, + 0x0000440d, 0xffffffff, - 0x0001441d + 0x0000441d }; static unsigned int const rasterop_presets[4] = { 0x00000003, @@ -157,6 +238,8 @@ tgafb_set_par(struct fb_info *info) }; struct tga_par *par = (struct tga_par *) info->par; + int tga_bus_pci = TGA_BUS_PCI(par->dev); + int tga_bus_tc = TGA_BUS_TC(par->dev); u32 htimings, vtimings, pll_freq; u8 tga_type; int i; @@ -221,7 +304,7 @@ tgafb_set_par(struct fb_info *info) TGA_WRITE_REG(par, vtimings, TGA_VERT_REG); /* Initalise RAMDAC. */ - if (tga_type == TGA_TYPE_8PLANE) { + if (tga_type == TGA_TYPE_8PLANE && tga_bus_pci) { /* Init BT485 RAMDAC registers. */ BT485_WRITE(par, 0xa2 | (par->sync_on_green ? 0x8 : 0x0), @@ -261,6 +344,38 @@ tgafb_set_par(struct fb_info *info) TGA_RAMDAC_REG); } + } else if (tga_type == TGA_TYPE_8PLANE && tga_bus_tc) { + + /* Init BT459 RAMDAC registers. */ + BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_0, 0x40); + BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_1, 0x00); + BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_2, + (par->sync_on_green ? 0xc0 : 0x40)); + + BT459_WRITE(par, BT459_REG_ACC, BT459_CUR_CMD_REG, 0x00); + + /* Fill the palette. */ + BT459_LOAD_ADDR(par, 0x0000); + TGA_WRITE_REG(par, BT459_PALETTE << 2, TGA_RAMDAC_SETUP_REG); + +#ifdef CONFIG_HW_CONSOLE + for (i = 0; i < 16; i++) { + int j = color_table[i]; + + TGA_WRITE_REG(par, default_red[j], TGA_RAMDAC_REG); + TGA_WRITE_REG(par, default_grn[j], TGA_RAMDAC_REG); + TGA_WRITE_REG(par, default_blu[j], TGA_RAMDAC_REG); + } + for (i = 0; i < 240 * 3; i += 4) { +#else + for (i = 0; i < 256 * 3; i += 4) { +#endif + TGA_WRITE_REG(par, 0x55, TGA_RAMDAC_REG); + TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); + TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); + TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); + } + } else { /* 24-plane or 24plusZ */ /* Init BT463 RAMDAC registers. */ @@ -431,6 +546,8 @@ tgafb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { struct tga_par *par = (struct tga_par *) info->par; + int tga_bus_pci = TGA_BUS_PCI(par->dev); + int tga_bus_tc = TGA_BUS_TC(par->dev); if (regno > 255) return 1; @@ -438,12 +555,18 @@ tgafb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, green >>= 8; blue >>= 8; - if (par->tga_type == TGA_TYPE_8PLANE) { + if (par->tga_type == TGA_TYPE_8PLANE && tga_bus_pci) { BT485_WRITE(par, regno, BT485_ADDR_PAL_WRITE); TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG); TGA_WRITE_REG(par, red|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); TGA_WRITE_REG(par, green|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); TGA_WRITE_REG(par, blue|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); + } else if (par->tga_type == TGA_TYPE_8PLANE && tga_bus_tc) { + BT459_LOAD_ADDR(par, regno); + TGA_WRITE_REG(par, BT459_PALETTE << 2, TGA_RAMDAC_SETUP_REG); + TGA_WRITE_REG(par, red, TGA_RAMDAC_REG); + TGA_WRITE_REG(par, green, TGA_RAMDAC_REG); + TGA_WRITE_REG(par, blue, TGA_RAMDAC_REG); } else { if (regno < 16) { u32 value = (regno << 16) | (regno << 8) | regno; @@ -1309,18 +1432,29 @@ static void tgafb_init_fix(struct fb_info *info) { struct tga_par *par = (struct tga_par *)info->par; + int tga_bus_pci = TGA_BUS_PCI(par->dev); + int tga_bus_tc = TGA_BUS_TC(par->dev); u8 tga_type = par->tga_type; - const char *tga_type_name; + const char *tga_type_name = NULL; switch (tga_type) { case TGA_TYPE_8PLANE: - tga_type_name = "Digital ZLXp-E1"; + if (tga_bus_pci) + tga_type_name = "Digital ZLXp-E1"; + if (tga_bus_tc) + tga_type_name = "Digital ZLX-E1"; break; case TGA_TYPE_24PLANE: - tga_type_name = "Digital ZLXp-E2"; + if (tga_bus_pci) + tga_type_name = "Digital ZLXp-E2"; + if (tga_bus_tc) + tga_type_name = "Digital ZLX-E2"; break; case TGA_TYPE_24PLUSZ: - tga_type_name = "Digital ZLXp-E3"; + if (tga_bus_pci) + tga_type_name = "Digital ZLXp-E3"; + if (tga_bus_tc) + tga_type_name = "Digital ZLX-E3"; break; default: tga_type_name = "Unknown"; @@ -1348,9 +1482,15 @@ tgafb_init_fix(struct fb_info *info) info->fix.accel = FB_ACCEL_DEC_TGA; } -static __devinit int -tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) +static int __devinit +tgafb_register(struct device *dev) { + static const struct fb_videomode modedb_tc = { + /* 1280x1024 @ 72 Hz, 76.8 kHz hsync */ + "1280x1024@72", 0, 1280, 1024, 7645, 224, 28, 33, 3, 160, 3, + FB_SYNC_ON_GREEN, FB_VMODE_NONINTERLACED + }; + static unsigned int const fb_offset_presets[4] = { TGA_8PLANE_FB_OFFSET, TGA_24PLANE_FB_OFFSET, @@ -1358,40 +1498,51 @@ tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) TGA_24PLUSZ_FB_OFFSET }; + const struct fb_videomode *modedb_tga = NULL; + resource_size_t bar0_start = 0, bar0_len = 0; + const char *mode_option_tga = NULL; + int tga_bus_pci = TGA_BUS_PCI(dev); + int tga_bus_tc = TGA_BUS_TC(dev); + unsigned int modedbsize_tga = 0; void __iomem *mem_base; - unsigned long bar0_start, bar0_len; struct fb_info *info; struct tga_par *par; u8 tga_type; - int ret; + int ret = 0; /* Enable device in PCI config. */ - if (pci_enable_device(pdev)) { + if (tga_bus_pci && pci_enable_device(to_pci_dev(dev))) { printk(KERN_ERR "tgafb: Cannot enable PCI device\n"); return -ENODEV; } /* Allocate the fb and par structures. */ - info = framebuffer_alloc(sizeof(struct tga_par), &pdev->dev); + info = framebuffer_alloc(sizeof(struct tga_par), dev); if (!info) { printk(KERN_ERR "tgafb: Cannot allocate memory\n"); return -ENOMEM; } par = info->par; - pci_set_drvdata(pdev, info); + dev_set_drvdata(dev, info); /* Request the mem regions. */ - bar0_start = pci_resource_start(pdev, 0); - bar0_len = pci_resource_len(pdev, 0); ret = -ENODEV; + if (tga_bus_pci) { + bar0_start = pci_resource_start(to_pci_dev(dev), 0); + bar0_len = pci_resource_len(to_pci_dev(dev), 0); + } + if (tga_bus_tc) { + bar0_start = to_tc_dev(dev)->resource.start; + bar0_len = to_tc_dev(dev)->resource.end - bar0_start + 1; + } if (!request_mem_region (bar0_start, bar0_len, "tgafb")) { printk(KERN_ERR "tgafb: cannot reserve FB region\n"); goto err0; } /* Map the framebuffer. */ - mem_base = ioremap(bar0_start, bar0_len); + mem_base = ioremap_nocache(bar0_start, bar0_len); if (!mem_base) { printk(KERN_ERR "tgafb: Cannot map MMIO\n"); goto err1; @@ -1399,12 +1550,16 @@ tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) /* Grab info about the card. */ tga_type = (readl(mem_base) >> 12) & 0x0f; - par->pdev = pdev; + par->dev = dev; par->tga_mem_base = mem_base; par->tga_fb_base = mem_base + fb_offset_presets[tga_type]; par->tga_regs_base = mem_base + TGA_REGS_OFFSET; par->tga_type = tga_type; - pci_read_config_byte(pdev, PCI_REVISION_ID, &par->tga_chip_rev); + if (tga_bus_pci) + pci_read_config_byte(to_pci_dev(dev), PCI_REVISION_ID, + &par->tga_chip_rev); + if (tga_bus_tc) + par->tga_chip_rev = TGA_READ_REG(par, TGA_START_REG) & 0xff; /* Setup framebuffer. */ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | @@ -1414,8 +1569,17 @@ tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) info->pseudo_palette = (void *)(par + 1); /* This should give a reasonable default video mode. */ - - ret = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, + if (tga_bus_pci) { + mode_option_tga = mode_option_pci; + } + if (tga_bus_tc) { + mode_option_tga = mode_option_tc; + modedb_tga = &modedb_tc; + modedbsize_tga = 1; + } + ret = fb_find_mode(&info->var, info, + mode_option ? mode_option : mode_option_tga, + modedb_tga, modedbsize_tga, NULL, tga_type == TGA_TYPE_8PLANE ? 8 : 32); if (ret == 0 || ret == 4) { printk(KERN_ERR "tgafb: Could not find valid video mode\n"); @@ -1438,13 +1602,19 @@ tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) goto err1; } - printk(KERN_INFO "tgafb: DC21030 [TGA] detected, rev=0x%02x\n", - par->tga_chip_rev); - printk(KERN_INFO "tgafb: at PCI bus %d, device %d, function %d\n", - pdev->bus->number, PCI_SLOT(pdev->devfn), - PCI_FUNC(pdev->devfn)); - printk(KERN_INFO "fb%d: %s frame buffer device at 0x%lx\n", - info->node, info->fix.id, bar0_start); + if (tga_bus_pci) { + pr_info("tgafb: DC21030 [TGA] detected, rev=0x%02x\n", + par->tga_chip_rev); + pr_info("tgafb: at PCI bus %d, device %d, function %d\n", + to_pci_dev(dev)->bus->number, + PCI_SLOT(to_pci_dev(dev)->devfn), + PCI_FUNC(to_pci_dev(dev)->devfn)); + } + if (tga_bus_tc) + pr_info("tgafb: SFB+ detected, rev=0x%02x\n", + par->tga_chip_rev); + pr_info("fb%d: %s frame buffer device at 0x%lx\n", + info->node, info->fix.id, (long)bar0_start); return 0; @@ -1458,25 +1628,39 @@ tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) } static void __devexit -tgafb_pci_unregister(struct pci_dev *pdev) +tgafb_unregister(struct device *dev) { - struct fb_info *info = pci_get_drvdata(pdev); - struct tga_par *par = info->par; + resource_size_t bar0_start = 0, bar0_len = 0; + int tga_bus_pci = TGA_BUS_PCI(dev); + int tga_bus_tc = TGA_BUS_TC(dev); + struct fb_info *info = NULL; + struct tga_par *par; + info = dev_get_drvdata(dev); if (!info) return; + + par = info->par; unregister_framebuffer(info); fb_dealloc_cmap(&info->cmap); iounmap(par->tga_mem_base); - release_mem_region(pci_resource_start(pdev, 0), - pci_resource_len(pdev, 0)); + if (tga_bus_pci) { + bar0_start = pci_resource_start(to_pci_dev(dev), 0); + bar0_len = pci_resource_len(to_pci_dev(dev), 0); + } + if (tga_bus_tc) { + bar0_start = to_tc_dev(dev)->resource.start; + bar0_len = to_tc_dev(dev)->resource.end - bar0_start + 1; + } + release_mem_region(bar0_start, bar0_len); framebuffer_release(info); } static void __devexit tgafb_exit(void) { - pci_unregister_driver(&tgafb_driver); + tc_unregister_driver(&tgafb_tc_driver); + pci_unregister_driver(&tgafb_pci_driver); } #ifndef MODULE @@ -1505,6 +1689,7 @@ tgafb_setup(char *arg) static int __devinit tgafb_init(void) { + int status; #ifndef MODULE char *option = NULL; @@ -1512,7 +1697,10 @@ tgafb_init(void) return -ENODEV; tgafb_setup(option); #endif - return pci_register_driver(&tgafb_driver); + status = pci_register_driver(&tgafb_pci_driver); + if (!status) + status = tc_register_driver(&tgafb_tc_driver); + return status; } /* @@ -1522,5 +1710,5 @@ tgafb_init(void) module_init(tgafb_init); module_exit(tgafb_exit); -MODULE_DESCRIPTION("framebuffer driver for TGA chipset"); +MODULE_DESCRIPTION("Framebuffer driver for TGA/SFB+ chipset"); MODULE_LICENSE("GPL"); |