From 223293205a7265c8b02882461ba8996650048ade Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 06:33:33 +0000
Subject: [PATCH] audio ok
---
kernel/drivers/video/fbdev/controlfb.c | 822 +++++++++++++++++++++++++++-------------------------------
1 files changed, 381 insertions(+), 441 deletions(-)
diff --git a/kernel/drivers/video/fbdev/controlfb.c b/kernel/drivers/video/fbdev/controlfb.c
index 8d14b29..bd59e7b 100644
--- a/kernel/drivers/video/fbdev/controlfb.c
+++ b/kernel/drivers/video/fbdev/controlfb.c
@@ -31,7 +31,6 @@
* more details.
*/
-#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
@@ -48,13 +47,40 @@
#include <linux/nvram.h>
#include <linux/adb.h>
#include <linux/cuda.h>
-#include <asm/io.h>
+#ifdef CONFIG_PPC_PMAC
#include <asm/prom.h>
-#include <asm/pgtable.h>
+#endif
+#ifdef CONFIG_BOOTX_TEXT
#include <asm/btext.h>
+#endif
#include "macmodes.h"
#include "controlfb.h"
+
+#if !defined(CONFIG_PPC_PMAC) || !defined(CONFIG_PPC32)
+#define invalid_vram_cache(addr)
+#undef in_8
+#undef out_8
+#undef in_le32
+#undef out_le32
+#define in_8(addr) 0
+#define out_8(addr, val) (void)(val)
+#define in_le32(addr) 0
+#define out_le32(addr, val) (void)(val)
+#ifndef pgprot_cached_wthru
+#define pgprot_cached_wthru(prot) (prot)
+#endif
+#else
+static void invalid_vram_cache(void __force *addr)
+{
+ eieio();
+ dcbf(addr);
+ mb();
+ eieio();
+ dcbf(addr);
+ mb();
+}
+#endif
struct fb_par_control {
int vmode, cmode;
@@ -119,38 +145,6 @@
#define CNTRL_REG(INFO,REG) (&(((INFO)->control_regs->REG).r))
-/******************** Prototypes for exported functions ********************/
-/*
- * struct fb_ops
- */
-static int controlfb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *info);
-static int controlfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int transp, struct fb_info *info);
-static int controlfb_blank(int blank_mode, struct fb_info *info);
-static int controlfb_mmap(struct fb_info *info,
- struct vm_area_struct *vma);
-static int controlfb_set_par (struct fb_info *info);
-static int controlfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info);
-
-/******************** Prototypes for internal functions **********************/
-
-static void set_control_clock(unsigned char *params);
-static int init_control(struct fb_info_control *p);
-static void control_set_hardware(struct fb_info_control *p,
- struct fb_par_control *par);
-static int control_of_init(struct device_node *dp);
-static void find_vram_size(struct fb_info_control *p);
-static int read_control_sense(struct fb_info_control *p);
-static int calc_clock_params(unsigned long clk, unsigned char *param);
-static int control_var_to_par(struct fb_var_screeninfo *var,
- struct fb_par_control *par, const struct fb_info *fb_info);
-static inline void control_par_to_var(struct fb_par_control *par,
- struct fb_var_screeninfo *var);
-static void control_init_info(struct fb_info *info, struct fb_info_control *p);
-static void control_cleanup(void);
-
-
/************************** Internal variables *******************************/
static struct fb_info_control *control_fb;
@@ -158,189 +152,6 @@
static int default_vmode __initdata = VMODE_NVRAM;
static int default_cmode __initdata = CMODE_NVRAM;
-
-static struct fb_ops controlfb_ops = {
- .owner = THIS_MODULE,
- .fb_check_var = controlfb_check_var,
- .fb_set_par = controlfb_set_par,
- .fb_setcolreg = controlfb_setcolreg,
- .fb_pan_display = controlfb_pan_display,
- .fb_blank = controlfb_blank,
- .fb_mmap = controlfb_mmap,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
-};
-
-
-/******************** The functions for controlfb_ops ********************/
-
-#ifdef MODULE
-MODULE_LICENSE("GPL");
-
-int init_module(void)
-{
- struct device_node *dp;
- int ret = -ENXIO;
-
- dp = of_find_node_by_name(NULL, "control");
- if (dp != 0 && !control_of_init(dp))
- ret = 0;
- of_node_put(dp);
-
- return ret;
-}
-
-void cleanup_module(void)
-{
- control_cleanup();
-}
-#endif
-
-/*
- * Checks a var structure
- */
-static int controlfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info)
-{
- struct fb_par_control par;
- int err;
-
- err = control_var_to_par(var, &par, info);
- if (err)
- return err;
- control_par_to_var(&par, var);
-
- return 0;
-}
-
-/*
- * Applies current var to display
- */
-static int controlfb_set_par (struct fb_info *info)
-{
- struct fb_info_control *p =
- container_of(info, struct fb_info_control, info);
- struct fb_par_control par;
- int err;
-
- if((err = control_var_to_par(&info->var, &par, info))) {
- printk (KERN_ERR "controlfb_set_par: error calling"
- " control_var_to_par: %d.\n", err);
- return err;
- }
-
- control_set_hardware(p, &par);
-
- info->fix.visual = (p->par.cmode == CMODE_8) ?
- FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
- info->fix.line_length = p->par.pitch;
- info->fix.xpanstep = 32 >> p->par.cmode;
- info->fix.ypanstep = 1;
-
- return 0;
-}
-
-/*
- * Set screen start address according to var offset values
- */
-static inline void set_screen_start(int xoffset, int yoffset,
- struct fb_info_control *p)
-{
- struct fb_par_control *par = &p->par;
-
- par->xoffset = xoffset;
- par->yoffset = yoffset;
- out_le32(CNTRL_REG(p,start_addr),
- par->yoffset * par->pitch + (par->xoffset << par->cmode));
-}
-
-
-static int controlfb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *info)
-{
- unsigned int xoffset, hstep;
- struct fb_info_control *p =
- container_of(info, struct fb_info_control, info);
- struct fb_par_control *par = &p->par;
-
- /*
- * make sure start addr will be 32-byte aligned
- */
- hstep = 0x1f >> par->cmode;
- xoffset = (var->xoffset + hstep) & ~hstep;
-
- if (xoffset+par->xres > par->vxres ||
- var->yoffset+par->yres > par->vyres)
- return -EINVAL;
-
- set_screen_start(xoffset, var->yoffset, p);
-
- return 0;
-}
-
-
-/*
- * Private mmap since we want to have a different caching on the framebuffer
- * for controlfb.
- * Note there's no locking in here; it's done in fb_mmap() in fbmem.c.
- */
-static int controlfb_mmap(struct fb_info *info,
- struct vm_area_struct *vma)
-{
- unsigned long mmio_pgoff;
- unsigned long start;
- u32 len;
-
- start = info->fix.smem_start;
- len = info->fix.smem_len;
- mmio_pgoff = PAGE_ALIGN((start & ~PAGE_MASK) + len) >> PAGE_SHIFT;
- if (vma->vm_pgoff >= mmio_pgoff) {
- if (info->var.accel_flags)
- return -EINVAL;
- vma->vm_pgoff -= mmio_pgoff;
- start = info->fix.mmio_start;
- len = info->fix.mmio_len;
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
- } else {
- /* framebuffer */
- vma->vm_page_prot = pgprot_cached_wthru(vma->vm_page_prot);
- }
-
- return vm_iomap_memory(vma, start, len);
-}
-
-static int controlfb_blank(int blank_mode, struct fb_info *info)
-{
- struct fb_info_control *p =
- container_of(info, struct fb_info_control, info);
- unsigned ctrl;
-
- ctrl = le32_to_cpup(CNTRL_REG(p,ctrl));
- if (blank_mode > 0)
- switch (blank_mode) {
- case FB_BLANK_VSYNC_SUSPEND:
- ctrl &= ~3;
- break;
- case FB_BLANK_HSYNC_SUSPEND:
- ctrl &= ~0x30;
- break;
- case FB_BLANK_POWERDOWN:
- ctrl &= ~0x33;
- /* fall through */
- case FB_BLANK_NORMAL:
- ctrl |= 0x400;
- break;
- default:
- break;
- }
- else {
- ctrl &= ~0x400;
- ctrl |= 0x33;
- }
- out_le32(CNTRL_REG(p,ctrl), ctrl);
-
- return 0;
-}
static int controlfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info)
@@ -398,87 +209,18 @@
#endif
}
-
/*
- * finish off the driver initialization and register
+ * Set screen start address according to var offset values
*/
-static int __init init_control(struct fb_info_control *p)
+static inline void set_screen_start(int xoffset, int yoffset,
+ struct fb_info_control *p)
{
- int full, sense, vmode, cmode, vyres;
- struct fb_var_screeninfo var;
- int rc;
-
- printk(KERN_INFO "controlfb: ");
+ struct fb_par_control *par = &p->par;
- full = p->total_vram == 0x400000;
-
- /* Try to pick a video mode out of NVRAM if we have one. */
-#ifdef CONFIG_NVRAM
- if (default_cmode == CMODE_NVRAM) {
- cmode = nvram_read_byte(NV_CMODE);
- if(cmode < CMODE_8 || cmode > CMODE_32)
- cmode = CMODE_8;
- } else
-#endif
- cmode=default_cmode;
-#ifdef CONFIG_NVRAM
- if (default_vmode == VMODE_NVRAM) {
- vmode = nvram_read_byte(NV_VMODE);
- if (vmode < 1 || vmode > VMODE_MAX ||
- control_mac_modes[vmode - 1].m[full] < cmode) {
- sense = read_control_sense(p);
- printk("Monitor sense value = 0x%x, ", sense);
- vmode = mac_map_monitor_sense(sense);
- if (control_mac_modes[vmode - 1].m[full] < cmode)
- vmode = VMODE_640_480_60;
- }
- } else
-#endif
- {
- vmode=default_vmode;
- if (control_mac_modes[vmode - 1].m[full] < cmode) {
- if (cmode > CMODE_8)
- cmode--;
- else
- vmode = VMODE_640_480_60;
- }
- }
-
- /* Initialize info structure */
- control_init_info(&p->info, p);
-
- /* Setup default var */
- if (mac_vmode_to_var(vmode, cmode, &var) < 0) {
- /* This shouldn't happen! */
- printk("mac_vmode_to_var(%d, %d,) failed\n", vmode, cmode);
-try_again:
- vmode = VMODE_640_480_60;
- cmode = CMODE_8;
- if (mac_vmode_to_var(vmode, cmode, &var) < 0) {
- printk(KERN_ERR "controlfb: mac_vmode_to_var() failed\n");
- return -ENXIO;
- }
- printk(KERN_INFO "controlfb: ");
- }
- printk("using video mode %d and color mode %d.\n", vmode, cmode);
-
- vyres = (p->total_vram - CTRLFB_OFF) / (var.xres << cmode);
- if (vyres > var.yres)
- var.yres_virtual = vyres;
-
- /* Apply default var */
- var.activate = FB_ACTIVATE_NOW;
- rc = fb_set_var(&p->info, &var);
- if (rc && (vmode != VMODE_640_480_60 || cmode != CMODE_8))
- goto try_again;
-
- /* Register with fbdev layer */
- if (register_framebuffer(&p->info) < 0)
- return -ENXIO;
-
- fb_info(&p->info, "control display adapter\n");
-
- return 0;
+ par->xoffset = xoffset;
+ par->yoffset = yoffset;
+ out_le32(CNTRL_REG(p,start_addr),
+ par->yoffset * par->pitch + (par->xoffset << par->cmode));
}
#define RADACAL_WRITE(a,d) \
@@ -542,67 +284,6 @@
#endif /* CONFIG_BOOTX_TEXT */
}
-
-/*
- * Parse user specified options (`video=controlfb:')
- */
-static void __init control_setup(char *options)
-{
- char *this_opt;
-
- if (!options || !*options)
- return;
-
- while ((this_opt = strsep(&options, ",")) != NULL) {
- if (!strncmp(this_opt, "vmode:", 6)) {
- int vmode = simple_strtoul(this_opt+6, NULL, 0);
- if (vmode > 0 && vmode <= VMODE_MAX &&
- control_mac_modes[vmode - 1].m[1] >= 0)
- default_vmode = vmode;
- } else if (!strncmp(this_opt, "cmode:", 6)) {
- int depth = simple_strtoul(this_opt+6, NULL, 0);
- switch (depth) {
- case CMODE_8:
- case CMODE_16:
- case CMODE_32:
- default_cmode = depth;
- break;
- case 8:
- default_cmode = CMODE_8;
- break;
- case 15:
- case 16:
- default_cmode = CMODE_16;
- break;
- case 24:
- case 32:
- default_cmode = CMODE_32;
- break;
- }
- }
- }
-}
-
-static int __init control_init(void)
-{
- struct device_node *dp;
- char *option = NULL;
- int ret = -ENXIO;
-
- if (fb_get_options("controlfb", &option))
- return -ENODEV;
- control_setup(option);
-
- dp = of_find_node_by_name(NULL, "control");
- if (dp != 0 && !control_of_init(dp))
- ret = 0;
- of_node_put(dp);
-
- return ret;
-}
-
-module_init(control_init);
-
/* Work out which banks of VRAM we have installed. */
/* danj: I guess the card just ignores writes to nonexistant VRAM... */
@@ -619,12 +300,7 @@
out_8(&p->frame_buffer[0x600000], 0xb3);
out_8(&p->frame_buffer[0x600001], 0x71);
- asm volatile("eieio; dcbf 0,%0" : : "r" (&p->frame_buffer[0x600000])
- : "memory" );
- mb();
- asm volatile("eieio; dcbi 0,%0" : : "r" (&p->frame_buffer[0x600000])
- : "memory" );
- mb();
+ invalid_vram_cache(&p->frame_buffer[0x600000]);
bank2 = (in_8(&p->frame_buffer[0x600000]) == 0xb3)
&& (in_8(&p->frame_buffer[0x600001]) == 0x71);
@@ -638,12 +314,7 @@
out_8(&p->frame_buffer[0], 0x5a);
out_8(&p->frame_buffer[1], 0xc7);
- asm volatile("eieio; dcbf 0,%0" : : "r" (&p->frame_buffer[0])
- : "memory" );
- mb();
- asm volatile("eieio; dcbi 0,%0" : : "r" (&p->frame_buffer[0])
- : "memory" );
- mb();
+ invalid_vram_cache(&p->frame_buffer[0]);
bank1 = (in_8(&p->frame_buffer[0]) == 0x5a)
&& (in_8(&p->frame_buffer[1]) == 0xc7);
@@ -675,79 +346,6 @@
printk(KERN_INFO "controlfb: VRAM Total = %dMB "
"(%dMB @ bank 1, %dMB @ bank 2)\n",
(bank1 + bank2) << 1, bank1 << 1, bank2 << 1);
-}
-
-
-/*
- * find "control" and initialize
- */
-static int __init control_of_init(struct device_node *dp)
-{
- struct fb_info_control *p;
- struct resource fb_res, reg_res;
-
- if (control_fb) {
- printk(KERN_ERR "controlfb: only one control is supported\n");
- return -ENXIO;
- }
-
- if (of_pci_address_to_resource(dp, 2, &fb_res) ||
- of_pci_address_to_resource(dp, 1, ®_res)) {
- printk(KERN_ERR "can't get 2 addresses for control\n");
- return -ENXIO;
- }
- p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (p == 0)
- return -ENXIO;
- control_fb = p; /* save it for cleanups */
-
- /* Map in frame buffer and registers */
- p->fb_orig_base = fb_res.start;
- p->fb_orig_size = resource_size(&fb_res);
- /* use the big-endian aperture (??) */
- p->frame_buffer_phys = fb_res.start + 0x800000;
- p->control_regs_phys = reg_res.start;
- p->control_regs_size = resource_size(®_res);
-
- if (!p->fb_orig_base ||
- !request_mem_region(p->fb_orig_base,p->fb_orig_size,"controlfb")) {
- p->fb_orig_base = 0;
- goto error_out;
- }
- /* map at most 8MB for the frame buffer */
- p->frame_buffer = __ioremap(p->frame_buffer_phys, 0x800000,
- _PAGE_WRITETHRU);
-
- if (!p->control_regs_phys ||
- !request_mem_region(p->control_regs_phys, p->control_regs_size,
- "controlfb regs")) {
- p->control_regs_phys = 0;
- goto error_out;
- }
- p->control_regs = ioremap(p->control_regs_phys, p->control_regs_size);
-
- p->cmap_regs_phys = 0xf301b000; /* XXX not in prom? */
- if (!request_mem_region(p->cmap_regs_phys, 0x1000, "controlfb cmap")) {
- p->cmap_regs_phys = 0;
- goto error_out;
- }
- p->cmap_regs = ioremap(p->cmap_regs_phys, 0x1000);
-
- if (!p->cmap_regs || !p->control_regs || !p->frame_buffer)
- goto error_out;
-
- find_vram_size(p);
- if (!p->total_vram)
- goto error_out;
-
- if (init_control(p) < 0)
- goto error_out;
-
- return 0;
-
-error_out:
- control_cleanup();
- return -ENXIO;
}
/*
@@ -1034,6 +632,150 @@
var->pixclock >>= par->regvals.clock_params[2];
}
+/******************** The functions for controlfb_ops ********************/
+
+/*
+ * Checks a var structure
+ */
+static int controlfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct fb_par_control par;
+ int err;
+
+ err = control_var_to_par(var, &par, info);
+ if (err)
+ return err;
+ control_par_to_var(&par, var);
+
+ return 0;
+}
+
+/*
+ * Applies current var to display
+ */
+static int controlfb_set_par (struct fb_info *info)
+{
+ struct fb_info_control *p =
+ container_of(info, struct fb_info_control, info);
+ struct fb_par_control par;
+ int err;
+
+ if((err = control_var_to_par(&info->var, &par, info))) {
+ printk (KERN_ERR "controlfb_set_par: error calling"
+ " control_var_to_par: %d.\n", err);
+ return err;
+ }
+
+ control_set_hardware(p, &par);
+
+ info->fix.visual = (p->par.cmode == CMODE_8) ?
+ FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
+ info->fix.line_length = p->par.pitch;
+ info->fix.xpanstep = 32 >> p->par.cmode;
+ info->fix.ypanstep = 1;
+
+ return 0;
+}
+
+static int controlfb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ unsigned int xoffset, hstep;
+ struct fb_info_control *p =
+ container_of(info, struct fb_info_control, info);
+ struct fb_par_control *par = &p->par;
+
+ /*
+ * make sure start addr will be 32-byte aligned
+ */
+ hstep = 0x1f >> par->cmode;
+ xoffset = (var->xoffset + hstep) & ~hstep;
+
+ if (xoffset+par->xres > par->vxres ||
+ var->yoffset+par->yres > par->vyres)
+ return -EINVAL;
+
+ set_screen_start(xoffset, var->yoffset, p);
+
+ return 0;
+}
+
+static int controlfb_blank(int blank_mode, struct fb_info *info)
+{
+ struct fb_info_control __maybe_unused *p =
+ container_of(info, struct fb_info_control, info);
+ unsigned ctrl;
+
+ ctrl = in_le32(CNTRL_REG(p, ctrl));
+ if (blank_mode > 0)
+ switch (blank_mode) {
+ case FB_BLANK_VSYNC_SUSPEND:
+ ctrl &= ~3;
+ break;
+ case FB_BLANK_HSYNC_SUSPEND:
+ ctrl &= ~0x30;
+ break;
+ case FB_BLANK_POWERDOWN:
+ ctrl &= ~0x33;
+ fallthrough;
+ case FB_BLANK_NORMAL:
+ ctrl |= 0x400;
+ break;
+ default:
+ break;
+ }
+ else {
+ ctrl &= ~0x400;
+ ctrl |= 0x33;
+ }
+ out_le32(CNTRL_REG(p,ctrl), ctrl);
+
+ return 0;
+}
+
+/*
+ * Private mmap since we want to have a different caching on the framebuffer
+ * for controlfb.
+ * Note there's no locking in here; it's done in fb_mmap() in fbmem.c.
+ */
+static int controlfb_mmap(struct fb_info *info,
+ struct vm_area_struct *vma)
+{
+ unsigned long mmio_pgoff;
+ unsigned long start;
+ u32 len;
+
+ start = info->fix.smem_start;
+ len = info->fix.smem_len;
+ mmio_pgoff = PAGE_ALIGN((start & ~PAGE_MASK) + len) >> PAGE_SHIFT;
+ if (vma->vm_pgoff >= mmio_pgoff) {
+ if (info->var.accel_flags)
+ return -EINVAL;
+ vma->vm_pgoff -= mmio_pgoff;
+ start = info->fix.mmio_start;
+ len = info->fix.mmio_len;
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ } else {
+ /* framebuffer */
+ vma->vm_page_prot = pgprot_cached_wthru(vma->vm_page_prot);
+ }
+
+ return vm_iomap_memory(vma, start, len);
+}
+
+static const struct fb_ops controlfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = controlfb_check_var,
+ .fb_set_par = controlfb_set_par,
+ .fb_setcolreg = controlfb_setcolreg,
+ .fb_pan_display = controlfb_pan_display,
+ .fb_blank = controlfb_blank,
+ .fb_mmap = controlfb_mmap,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
/*
* Set misc info vars for this driver
*/
@@ -1060,6 +802,115 @@
info->fix.accel = FB_ACCEL_NONE;
}
+/*
+ * Parse user specified options (`video=controlfb:')
+ */
+static void __init control_setup(char *options)
+{
+ char *this_opt;
+
+ if (!options || !*options)
+ return;
+
+ while ((this_opt = strsep(&options, ",")) != NULL) {
+ if (!strncmp(this_opt, "vmode:", 6)) {
+ int vmode = simple_strtoul(this_opt+6, NULL, 0);
+ if (vmode > 0 && vmode <= VMODE_MAX &&
+ control_mac_modes[vmode - 1].m[1] >= 0)
+ default_vmode = vmode;
+ } else if (!strncmp(this_opt, "cmode:", 6)) {
+ int depth = simple_strtoul(this_opt+6, NULL, 0);
+ switch (depth) {
+ case CMODE_8:
+ case CMODE_16:
+ case CMODE_32:
+ default_cmode = depth;
+ break;
+ case 8:
+ default_cmode = CMODE_8;
+ break;
+ case 15:
+ case 16:
+ default_cmode = CMODE_16;
+ break;
+ case 24:
+ case 32:
+ default_cmode = CMODE_32;
+ break;
+ }
+ }
+ }
+}
+
+/*
+ * finish off the driver initialization and register
+ */
+static int __init init_control(struct fb_info_control *p)
+{
+ int full, sense, vmode, cmode, vyres;
+ struct fb_var_screeninfo var;
+ int rc;
+
+ printk(KERN_INFO "controlfb: ");
+
+ full = p->total_vram == 0x400000;
+
+ /* Try to pick a video mode out of NVRAM if we have one. */
+ cmode = default_cmode;
+ if (IS_REACHABLE(CONFIG_NVRAM) && cmode == CMODE_NVRAM)
+ cmode = nvram_read_byte(NV_CMODE);
+ if (cmode < CMODE_8 || cmode > CMODE_32)
+ cmode = CMODE_8;
+
+ vmode = default_vmode;
+ if (IS_REACHABLE(CONFIG_NVRAM) && vmode == VMODE_NVRAM)
+ vmode = nvram_read_byte(NV_VMODE);
+ if (vmode < 1 || vmode > VMODE_MAX ||
+ control_mac_modes[vmode - 1].m[full] < cmode) {
+ sense = read_control_sense(p);
+ printk(KERN_CONT "Monitor sense value = 0x%x, ", sense);
+ vmode = mac_map_monitor_sense(sense);
+ if (control_mac_modes[vmode - 1].m[full] < 0)
+ vmode = VMODE_640_480_60;
+ cmode = min(cmode, control_mac_modes[vmode - 1].m[full]);
+ }
+
+ /* Initialize info structure */
+ control_init_info(&p->info, p);
+
+ /* Setup default var */
+ if (mac_vmode_to_var(vmode, cmode, &var) < 0) {
+ /* This shouldn't happen! */
+ printk("mac_vmode_to_var(%d, %d,) failed\n", vmode, cmode);
+try_again:
+ vmode = VMODE_640_480_60;
+ cmode = CMODE_8;
+ if (mac_vmode_to_var(vmode, cmode, &var) < 0) {
+ printk(KERN_ERR "controlfb: mac_vmode_to_var() failed\n");
+ return -ENXIO;
+ }
+ printk(KERN_INFO "controlfb: ");
+ }
+ printk("using video mode %d and color mode %d.\n", vmode, cmode);
+
+ vyres = (p->total_vram - CTRLFB_OFF) / (var.xres << cmode);
+ if (vyres > var.yres)
+ var.yres_virtual = vyres;
+
+ /* Apply default var */
+ var.activate = FB_ACTIVATE_NOW;
+ rc = fb_set_var(&p->info, &var);
+ if (rc && (vmode != VMODE_640_480_60 || cmode != CMODE_8))
+ goto try_again;
+
+ /* Register with fbdev layer */
+ if (register_framebuffer(&p->info) < 0)
+ return -ENXIO;
+
+ fb_info(&p->info, "control display adapter\n");
+
+ return 0;
+}
static void control_cleanup(void)
{
@@ -1086,4 +937,93 @@
kfree(p);
}
+/*
+ * find "control" and initialize
+ */
+static int __init control_of_init(struct device_node *dp)
+{
+ struct fb_info_control *p;
+ struct resource fb_res, reg_res;
+ if (control_fb) {
+ printk(KERN_ERR "controlfb: only one control is supported\n");
+ return -ENXIO;
+ }
+
+ if (of_pci_address_to_resource(dp, 2, &fb_res) ||
+ of_pci_address_to_resource(dp, 1, ®_res)) {
+ printk(KERN_ERR "can't get 2 addresses for control\n");
+ return -ENXIO;
+ }
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+ control_fb = p; /* save it for cleanups */
+
+ /* Map in frame buffer and registers */
+ p->fb_orig_base = fb_res.start;
+ p->fb_orig_size = resource_size(&fb_res);
+ /* use the big-endian aperture (??) */
+ p->frame_buffer_phys = fb_res.start + 0x800000;
+ p->control_regs_phys = reg_res.start;
+ p->control_regs_size = resource_size(®_res);
+
+ if (!p->fb_orig_base ||
+ !request_mem_region(p->fb_orig_base,p->fb_orig_size,"controlfb")) {
+ p->fb_orig_base = 0;
+ goto error_out;
+ }
+ /* map at most 8MB for the frame buffer */
+ p->frame_buffer = ioremap_wt(p->frame_buffer_phys, 0x800000);
+
+ if (!p->control_regs_phys ||
+ !request_mem_region(p->control_regs_phys, p->control_regs_size,
+ "controlfb regs")) {
+ p->control_regs_phys = 0;
+ goto error_out;
+ }
+ p->control_regs = ioremap(p->control_regs_phys, p->control_regs_size);
+
+ p->cmap_regs_phys = 0xf301b000; /* XXX not in prom? */
+ if (!request_mem_region(p->cmap_regs_phys, 0x1000, "controlfb cmap")) {
+ p->cmap_regs_phys = 0;
+ goto error_out;
+ }
+ p->cmap_regs = ioremap(p->cmap_regs_phys, 0x1000);
+
+ if (!p->cmap_regs || !p->control_regs || !p->frame_buffer)
+ goto error_out;
+
+ find_vram_size(p);
+ if (!p->total_vram)
+ goto error_out;
+
+ if (init_control(p) < 0)
+ goto error_out;
+
+ return 0;
+
+error_out:
+ control_cleanup();
+ return -ENXIO;
+}
+
+static int __init control_init(void)
+{
+ struct device_node *dp;
+ char *option = NULL;
+ int ret = -ENXIO;
+
+ if (fb_get_options("controlfb", &option))
+ return -ENODEV;
+ control_setup(option);
+
+ dp = of_find_node_by_name(NULL, "control");
+ if (dp && !control_of_init(dp))
+ ret = 0;
+ of_node_put(dp);
+
+ return ret;
+}
+
+device_initcall(control_init);
--
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