/******************** 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 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 *******************************/
#endif
}
-
-/*
- * 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;
-}
-
#define RADACAL_WRITE(a,d) \
out_8(&p->cmap_regs->addr, (a)); \
out_8(&p->cmap_regs->dat, (d))
#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 && !control_of_init(dp))
- ret = 0;
- of_node_put(dp);
-
- return ret;
-}
-
-device_initcall(control_init);
-
/* Work out which banks of VRAM we have installed. */
/* danj: I guess the card just ignores writes to nonexistant VRAM... */
(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)
- 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;
-}
-
/*
* Get the monitor sense value.
* Note that this can be called before calibrate_delay,
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)
{
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);
projects / platform / kernel / linux-starfive.git / commitdiff