/*
- * (C) Copyright 2012 Lothar Waßmann <LW@KARO-electronics.de>
+ * (C) Copyright 2012,2013 Lothar Waßmann <LW@KARO-electronics.de>
*
* See file CREDITS for list of people who contributed to this
* project.
#include <libfdt.h>
#include <fdt_support.h>
#include <nand.h>
+#include <mxcfb.h>
+#include <linux/list.h>
+#include <linux/fb.h>
#include <jffs2/load_kernel.h>
+#include <malloc.h>
#include "karo.h"
static void karo_set_fdtsize(void *fdt)
{
- char fdt_size[9];
size_t fdtsize = getenv_ulong("fdtsize", 16, 0);
if (fdtsize == fdt_totalsize(fdt)) {
}
debug("FDT size changed from %u to %u\n",
fdtsize, fdt_totalsize(fdt));
+ setenv_hex("fdtsize", fdt_totalsize(fdt));
+}
+
+static void *karo_fdt_load_dtb(void)
+{
+ int ret;
+ void *fdt = (void *)getenv_ulong("fdtaddr", 16, CONFIG_SYS_FDT_ADDR);
+
+ if (had_ctrlc()) {
+ printf("aborting DTB load\n");
+ return NULL;
+ }
+
+ /* clear FDT header in memory */
+ memset(fdt, 0, 4);
+
+ ret = karo_load_part("dtb", fdt, MAX_DTB_SIZE);
+ if (ret) {
+ printf("Failed to load dtb from flash: %d\n", ret);
+ return NULL;
+ }
- snprintf(fdt_size, sizeof(fdt_size), "%08x", fdt_totalsize(fdt));
- setenv("fdtsize", fdt_size);
+ if (fdt_check_header(fdt)) {
+ debug("No valid DTB in flash\n");
+ return NULL;
+ }
+ debug("Using DTB from flash\n");
+ karo_set_fdtsize(fdt);
+ return fdt;
}
void karo_fdt_move_fdt(void)
void *fdt;
unsigned long fdt_addr = getenv_ulong("fdtaddr", 16, 0);
- if (!fdt_addr) {
- printf("fdtaddr is not set\n");
+ if (working_fdt) {
+ debug("DTB already loaded\n");
return;
}
+ setenv("fdtsize", 0);
+
+ if (!fdt_addr) {
+ fdt_addr = CONFIG_SYS_FDT_ADDR;
+ printf("fdtaddr is not set; using default: %08lx\n",
+ fdt_addr);
+ }
+
fdt = karo_fdt_load_dtb();
if (fdt == NULL) {
fdt = (void *)gd->fdt_blob;
if (fdt == NULL) {
- printf("Compiled in FDT not found\n");
- return;
+#ifdef CONFIG_OF_EMBED
+ printf("Compiled in FDT not found");
+#else
+ printf("No FDT found");
+#endif
+ printf("; creating empty DTB\n");
+ fdt = (void *)fdt_addr;
+ fdt_create_empty_tree(fdt, 256);
+ } else {
+ printf("No DTB in flash; using default DTB\n");
}
debug("Checking FDT header @ %p\n", fdt);
if (fdt_check_header(fdt)) {
printf("ERROR: No valid DTB found at %p\n", fdt);
return;
}
- printf("No DTB in flash; using default DTB\n");
debug("Moving FDT from %p..%p to %08lx..%08lx\n",
fdt, fdt + fdt_totalsize(fdt) - 1,
fdt_addr, fdt_addr + fdt_totalsize(fdt) - 1);
memmove((void *)fdt_addr, fdt, fdt_totalsize(fdt));
}
set_working_fdt_addr((void *)fdt_addr);
+ gd->fdt_blob = fdt;
karo_set_fdtsize(fdt);
}
void karo_fdt_remove_node(void *blob, const char *node)
{
- debug("Removing node %s from DT\n", node);
- fdt_del_node_and_alias(blob, node);
+ int off = fdt_path_offset(blob, node);
+ int ret;
+
+ debug("Removing node '%s' from DT\n", node);
+
+ if (off < 0) {
+ printf("Could not find node '%s': %s\n", node,
+ fdt_strerror(off));
+ } else {
+ ret = fdt_del_node(blob, off);
+ if (ret)
+ printf("Failed to remove node '%s': %s\n",
+ node, fdt_strerror(ret));
+ }
karo_set_fdtsize(blob);
}
-static const char *karo_touchpanels[] = {
- "ti,tsc2007",
- "edt,edt-ft5x06",
-};
-
-static void fdt_del_tp_node(void *blob, const char *name)
+void karo_fdt_enable_node(void *blob, const char *node, int enable)
{
- int offs = fdt_node_offset_by_compatible(blob, -1, name);
- uint32_t ph1 = 0, ph2 = 0;
- const uint32_t *prop;
+ int off = fdt_path_offset(blob, node);
- if (offs < 0) {
- debug("node '%s' not found: %d\n", name, offs);
+ debug("%sabling node '%s'\n", enable ? "En" : "Dis", node);
+ if (off < 0) {
+ printf("Could not find node '%s': %s\n", node,
+ fdt_strerror(off));
return;
}
+ fdt_set_node_status(blob, off,
+ enable ? FDT_STATUS_OKAY : FDT_STATUS_DISABLED, 0);
- prop = fdt_getprop(blob, offs, "reset-switch", NULL);
- if (prop)
- ph1 = be32_to_cpu(*prop);
-
- prop = fdt_getprop(blob, offs, "wake-switch", NULL);
- if (prop)
- ph2 = be32_to_cpu(*prop);
+ karo_set_fdtsize(blob);
+}
- debug("Removing node '%s' from DT\n", name);
- fdt_del_node(blob, offs);
+static void fdt_disable_tp_node(void *blob, const char *name)
+{
+ int offs = fdt_node_offset_by_compatible(blob, -1, name);
- if (ph1) {
- offs = fdt_node_offset_by_phandle(blob, ph1);
- if (offs > 0) {
- debug("Removing node %08x @ %08x\n", ph1, offs);
- fdt_del_node(blob, offs);
- }
- }
- if (ph2) {
- offs = fdt_node_offset_by_phandle(blob, ph2);
- if (offs > 0) {
- debug("Removing node %08x @ %08x\n", ph2, offs);
- fdt_del_node(blob, offs);
- }
+ while (offs >= 0) {
+ debug("Disabling node '%s'\n", name);
+ fdt_set_node_status(blob, offs, FDT_STATUS_DISABLED, 0);
+ offs = fdt_node_offset_by_compatible(blob, offs, name);
}
}
-void karo_fdt_fixup_touchpanel(void *blob)
+void karo_fdt_fixup_touchpanel(void *blob, const char *panels[],
+ size_t num_panels)
{
int i;
const char *model = getenv("touchpanel");
- for (i = 0; i < ARRAY_SIZE(karo_touchpanels); i++) {
- const char *tp = karo_touchpanels[i];
+ for (i = 0; i < num_panels; i++) {
+ const char *tp = panels[i];
+
+ if (model != NULL) {
+ if (strcmp(model, tp) == 0)
+ continue;
+ while (tp != NULL) {
+ if (*tp != '\0' && strcmp(model, tp + 1) == 0)
+ break;
+ tp = strpbrk(tp + 1, ",-");
+ }
+ if (tp != NULL)
+ continue;
+ }
+ fdt_disable_tp_node(blob, panels[i]);
+ }
+ karo_set_fdtsize(blob);
+}
+
+static int karo_fdt_disable_node_phandle(void *blob, const char *parent,
+ const char *name)
+{
+ const uint32_t *ph;
+ int off;
- if (model != NULL && strcmp(model, tp) == 0)
- continue;
+ off = fdt_path_offset(blob, parent);
+ if (off < 0) {
+ printf("Failed to find node '%s'\n", parent);
+ return off;
+ }
- tp = strchr(tp, ',');
- if (tp != NULL && *tp != '\0' && strcmp(model, tp + 1) == 0)
- continue;
+ ph = fdt_getprop(blob, off, name, NULL);
+ if (ph == NULL) {
+ debug("Failed to find '%s' phandle in node '%s'\n", name,
+ fdt_get_name(blob, off, NULL));
+ return -FDT_ERR_NOTFOUND;
+ }
- fdt_del_tp_node(blob, karo_touchpanels[i]);
- karo_set_fdtsize(blob);
+ off = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*ph));
+ if (off <= 0) {
+ printf("Failed to find '%s' node via phandle %04x\n",
+ name, fdt32_to_cpu(*ph));
+ return -FDT_ERR_NOTFOUND;
}
+ return fdt_set_node_status(blob, off, FDT_STATUS_DISABLED, 0);
}
-void karo_fdt_fixup_usb_otg(void *blob)
+void karo_fdt_fixup_usb_otg(void *blob, const char *node, const char *phy)
{
const char *otg_mode = getenv("otg_mode");
- int usbphy = 2;
+ int off;
+ int ret;
+ int disable_otg = 0;
+ int disable_phy_pins = 1;
+
+ debug("OTG mode is '%s'\n", otg_mode ? otg_mode : "<UNSET>");
- if (otg_mode == NULL || strcmp(otg_mode, "host") != 0) {
- karo_fdt_remove_node(blob, "usbh1");
- usbphy--;
+ off = fdt_path_offset(blob, node);
+ if (off < 0) {
+ debug("Failed to find node %s\n", node);
+ return;
}
- if (otg_mode == NULL || strcmp(otg_mode, "device") != 0) {
- karo_fdt_remove_node(blob, "usbotg");
- usbphy--;
+
+ if (otg_mode && (strcmp(otg_mode, "device") == 0 ||
+ strcmp(otg_mode, "gadget") == 0)) {
+ debug("Setting dr_mode to 'peripheral'\n");
+ ret = fdt_setprop_string(blob, off, "dr_mode", "peripheral");
+ } else if (otg_mode && strcmp(otg_mode, "host") == 0) {
+ debug("Setting dr_mode to 'host'\n");
+ ret = fdt_setprop_string(blob, off, "dr_mode", "host");
+ disable_phy_pins = 0;
+ } else if (otg_mode && strcmp(otg_mode, "otg") == 0) {
+ debug("Setting dr_mode to 'host'\n");
+ ret = fdt_setprop_string(blob, off, "dr_mode", "otg");
+ disable_phy_pins = 0;
+ } else {
+ if (otg_mode && strcmp(otg_mode, "none") != 0)
+ printf("Invalid 'otg_mode' setting '%s'; disabling usbotg port\n",
+ otg_mode);
+ disable_otg = 1;
+ ret = 0;
}
- if (!usbphy) {
- karo_fdt_remove_node(blob, "usbphy");
+
+ if ((!disable_phy_pins && !disable_otg) || ret)
+ goto out;
+
+ ret = karo_fdt_disable_node_phandle(blob, node, "vbus-supply");
+ if (ret)
+ goto out;
+
+ if (disable_otg) {
+ debug("Disabling usbphy\n");
+ ret = fdt_set_node_status(blob, off, FDT_STATUS_DISABLED, 0);
+ if (ret)
+ goto out;
+
+ ret = karo_fdt_disable_node_phandle(blob, node, phy);
+ } else if (disable_phy_pins) {
+ debug("Removing 'vbus-supply' from usbotg node\n");
+ fdt_delprop(blob, off, "vbus-supply");
}
+
+out:
+ if (ret)
+ printf("Failed to update usbotg: %s\n", fdt_strerror(ret));
+ else
+ debug("node '%s' updated\n", node);
karo_set_fdtsize(blob);
}
+static inline int karo_fdt_flexcan_enabled(void *blob)
+{
+ static const char *can_ifs[] = {
+ "can0",
+ "can1",
+ };
+ size_t i;
+
+ for (i = 0; i < ARRAY_SIZE(can_ifs); i++) {
+ const char *status;
+ int off = fdt_path_offset(blob, can_ifs[i]);
+
+ if (off < 0) {
+ debug("node '%s' not found\n", can_ifs[i]);
+ continue;
+ }
+ status = fdt_getprop(blob, off, "status", NULL);
+ if (status && strcmp(status, "okay") == 0) {
+ debug("%s is enabled\n", can_ifs[i]);
+ return 1;
+ }
+ }
+ debug("can driver is disabled\n");
+ return 0;
+}
+
+static inline void karo_fdt_set_lcd_pins(void *blob, const char *name)
+{
+ int off = fdt_path_offset(blob, name);
+ u32 ph;
+ const struct fdt_property *pc;
+ int len;
+
+ if (off < 0)
+ return;
+
+ ph = fdt_create_phandle(blob, off);
+ if (!ph)
+ return;
+
+ off = fdt_path_offset(blob, "display");
+ if (off < 0)
+ return;
+
+ pc = fdt_get_property(blob, off, "pinctrl-0", &len);
+ if (!pc || len < sizeof(ph))
+ return;
+
+ memcpy((void *)pc->data, &ph, sizeof(ph));
+ fdt_setprop_cell(blob, off, "pinctrl-0", ph);
+}
+
+void karo_fdt_fixup_flexcan(void *blob, int xcvr_present)
+{
+ int ret;
+ const char *xcvr_status = "disabled";
+ const char *otg_mode = getenv("otg_mode");
+
+ if (xcvr_present) {
+ if (karo_fdt_flexcan_enabled(blob)) {
+ if (!is_lvds()) {
+ debug("Changing LCD to use 23bits only\n");
+ karo_fdt_set_lcd_pins(blob, "lcdif_23bit_pins_a");
+ xcvr_status = NULL;
+ }
+ } else if (!is_lvds()) {
+ debug("Changing LCD to use 24bits\n");
+ karo_fdt_set_lcd_pins(blob, "lcdif_24bit_pins_a");
+ }
+ } else {
+ int off = fdt_path_offset(blob, "can0");
+
+ if (off >= 0)
+ fdt_delprop(blob, off, "xceiver-supply");
+ off = fdt_path_offset(blob, "can1");
+ if (off >= 0)
+ fdt_delprop(blob, off, "xceiver-supply");
+ if (!is_lvds())
+ karo_fdt_set_lcd_pins(blob, "lcdif_24bit_pins_a");
+ }
+
+ if (otg_mode && strcmp(otg_mode, "host") == 0)
+ karo_fdt_enable_node(blob, "can1", 0);
+
+ if (xcvr_status) {
+ debug("Disabling CAN XCVR\n");
+ ret = fdt_find_and_setprop(blob, "reg_can_xcvr", "status",
+ xcvr_status, strlen(xcvr_status) + 1, 1);
+ if (ret)
+ printf("Failed to disable CAN transceiver switch: %s\n",
+ fdt_strerror(ret));
+ }
+}
+
void karo_fdt_del_prop(void *blob, const char *compat, phys_addr_t offs,
const char *prop)
{
if (offset <= 0)
return;
- phandle = fdt_getprop(blob, offset, "transceiver-switch", NULL);
+ phandle = fdt_getprop(blob, offset, prop, NULL);
if (phandle) {
- ph = be32_to_cpu(*phandle);
+ ph = fdt32_to_cpu(*phandle);
}
debug("Removing property '%s' from node %s@%08lx\n", prop, compat, offs);
karo_set_fdtsize(blob);
}
-static int karo_load_part(const char *part, void *addr, size_t len)
+static int fdt_init_fb_mode(const void *blob, int off, struct fb_videomode *fb_mode)
+{
+ const uint32_t *prop;
+
+ memset(fb_mode, 0, sizeof(*fb_mode));
+
+ prop = fdt_getprop(blob, off, "clock-frequency", NULL);
+ if (prop)
+ fb_mode->pixclock = KHZ2PICOS(fdt32_to_cpu(*prop) / 1000);
+
+ prop = fdt_getprop(blob, off, "hactive", NULL);
+ if (prop)
+ fb_mode->xres = fdt32_to_cpu(*prop);
+
+ prop = fdt_getprop(blob, off, "vactive", NULL);
+ if (prop)
+ fb_mode->yres = fdt32_to_cpu(*prop);
+
+ prop = fdt_getprop(blob, off, "hback-porch", NULL);
+ if (prop)
+ fb_mode->left_margin = fdt32_to_cpu(*prop);
+
+ prop = fdt_getprop(blob, off, "hsync-len", NULL);
+ if (prop)
+ fb_mode->hsync_len = fdt32_to_cpu(*prop);
+
+ prop = fdt_getprop(blob, off, "hfront-porch", NULL);
+ if (prop)
+ fb_mode->right_margin = fdt32_to_cpu(*prop);
+
+ prop = fdt_getprop(blob, off, "vback-porch", NULL);
+ if (prop)
+ fb_mode->upper_margin = fdt32_to_cpu(*prop);
+
+ prop = fdt_getprop(blob, off, "vsync-len", NULL);
+ if (prop)
+ fb_mode->vsync_len = fdt32_to_cpu(*prop);
+
+ prop = fdt_getprop(blob, off, "vfront-porch", NULL);
+ if (prop)
+ fb_mode->lower_margin = fdt32_to_cpu(*prop);
+
+ prop = fdt_getprop(blob, off, "hsync-active", NULL);
+ if (prop)
+ fb_mode->sync |= *prop ? FB_SYNC_VERT_HIGH_ACT : 0;
+
+ prop = fdt_getprop(blob, off, "vsync-active", NULL);
+ if (prop)
+ fb_mode->sync |= *prop ? FB_SYNC_VERT_HIGH_ACT : 0;
+
+ prop = fdt_getprop(blob, off, "de-active", NULL);
+ if (prop)
+ fb_mode->sync |= *prop ? 0 : FB_SYNC_OE_LOW_ACT;
+
+ prop = fdt_getprop(blob, off, "pixelclk-active", NULL);
+ if (prop)
+ fb_mode->sync |= *prop ? 0 : FB_SYNC_CLK_LAT_FALL;
+
+ return 0;
+}
+
+static int fdt_update_native_fb_mode(void *blob, int off)
{
int ret;
- struct mtd_device *dev;
- struct part_info *part_info;
- u8 part_num;
+ uint32_t ph;
+
+ ret = fdt_increase_size(blob, 64);
+ if (ret) {
+ printf("Warning: Failed to increase FDT size: %s\n",
+ fdt_strerror(ret));
+ }
+ debug("Creating phandle at offset %d\n", off);
+ ph = fdt_create_phandle(blob, off);
+ if (!ph) {
+ printf("Failed to create phandle for video timing\n");
+ return -ENOMEM;
+ }
- debug("Initializing mtd_parts\n");
- ret = mtdparts_init();
+ debug("phandle of %s @ %06x=%04x\n", fdt_get_name(blob, off, NULL),
+ off, ph);
+ off = fdt_parent_offset(blob, off);
+ if (off < 0)
+ return off;
+ debug("parent offset=%06x\n", off);
+ ret = fdt_setprop_cell(blob, off, "native-mode", ph);
if (ret)
- return ret;
+ printf("Failed to set property 'native-mode': %s\n",
+ fdt_strerror(ret));
+ karo_set_fdtsize(blob);
+ return ret;
+}
- debug("Trying to find NAND partition '%s'\n", part);
- ret = find_dev_and_part(part, &dev, &part_num,
- &part_info);
- if (ret) {
- printf("Failed to find flash partition '%s': %d\n",
- part, ret);
+static int karo_fdt_find_video_timings(void *blob)
+{
+ int off = fdt_path_offset(blob, "display");
+ const char *subnode = "display-timings";
- return ret;
+ if (off < 0) {
+ debug("Could not find node 'display' in FDT: %s\n",
+ fdt_strerror(off));
+ return off;
}
- debug("Found partition '%s': offset=%08x size=%08x\n",
- part, part_info->offset, part_info->size);
- if (part_info->size < len) {
- printf("Warning: partition '%s' smaller than requested size: %u; truncating data to %u byte\n",
- part, len, part_info->size);
- len = part_info->size;
+
+ off = fdt_subnode_offset(blob, off, subnode);
+ if (off < 0) {
+ debug("Could not find node '%s' in FDT: %s\n", subnode,
+ fdt_strerror(off));
}
- debug("Reading NAND partition '%s' to %p\n", part, addr);
- ret = nand_read_skip_bad(&nand_info[0], part_info->offset, &len, addr);
+ return off;
+}
+
+int karo_fdt_get_fb_mode(void *blob, const char *name, struct fb_videomode *fb_mode)
+{
+ int off = karo_fdt_find_video_timings(blob);
+
+ if (off < 0)
+ return off;
+ while (off > 0) {
+ const char *n, *endp;
+ int len, d = 1;
+
+ off = fdt_next_node(blob, off, &d);
+ if (off < 0)
+ return off;
+ if (d < 1)
+ return -EINVAL;
+ if (d > 2) {
+ debug("Skipping node @ %04x %s depth %d\n", off,
+ fdt_get_name(blob, off, NULL), d);
+ continue;
+ }
+ debug("parsing subnode @ %04x %s depth %d\n", off,
+ fdt_get_name(blob, off, NULL), d);
+
+ n = fdt_getprop(blob, off, "panel-name", &len);
+ if (!n) {
+ n = fdt_get_name(blob, off, NULL);
+ if (strcasecmp(n, name) == 0) {
+ break;
+ }
+ } else {
+ int found = 0;
+
+ for (endp = n + len; n < endp; n += strlen(n) + 1) {
+ debug("Checking panel-name '%s'\n", n);
+ if (strcasecmp(n, name) == 0) {
+ debug("Using node %s @ %04x\n",
+ fdt_get_name(blob, off, NULL), off);
+ found = 1;
+ break;
+ }
+ }
+ if (found)
+ break;
+ }
+ }
+ if (off > 0) {
+ return fdt_init_fb_mode(blob, off, fb_mode);
+ }
+ return -EINVAL;
+}
+
+#define SET_FB_PROP(n, v) ({ \
+ int ret; \
+ ret = fdt_setprop_u32(blob, off, n, v); \
+ if (ret) { \
+ printf("Failed to set property %s: %s\n", name, \
+ fdt_strerror(ret)); \
+ } \
+ ret; \
+})
+
+
+int karo_fdt_create_fb_mode(void *blob, const char *name,
+ struct fb_videomode *fb_mode)
+{
+ int off = fdt_path_offset(blob, "display");
+ int ret;
+ const char *subnode = "display-timings";
+
+ if (off < 0) {
+ printf("'display' node not found in FDT\n");
+ return off;
+ }
+
+ ret = fdt_increase_size(blob, 512);
if (ret) {
- printf("Failed to load partition '%s' to %p\n", part, addr);
+ printf("Failed to increase FDT size: %s\n", fdt_strerror(ret));
return ret;
}
- debug("Read %u byte from partition '%s' @ offset %08x\n",
- len, part, part_info->offset);
- return 0;
+
+ ret = fdt_subnode_offset(blob, off, subnode);
+ if (ret < 0) {
+ debug("Could not find node '%s' in FDT: %s\n", subnode,
+ fdt_strerror(ret));
+ ret = fdt_add_subnode(blob, off, subnode);
+ if (ret < 0) {
+ printf("Failed to add %s subnode: %s\n", subnode,
+ fdt_strerror(ret));
+ return ret;
+ }
+ }
+
+ ret = fdt_add_subnode(blob, ret, name);
+ if (ret < 0) {
+ printf("Failed to add %s subnode: %s\n", name,
+ fdt_strerror(ret));
+ return ret;
+ }
+ off = ret;
+
+ ret = SET_FB_PROP("clock-frequency",
+ PICOS2KHZ(fb_mode->pixclock) * 1000);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("hactive", fb_mode->xres);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("vactive", fb_mode->yres);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("hback-porch", fb_mode->left_margin);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("hsync-len", fb_mode->hsync_len);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("hfront-porch", fb_mode->right_margin);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("vback-porch", fb_mode->upper_margin);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("vsync-len", fb_mode->vsync_len);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("vfront-porch", fb_mode->lower_margin);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("hsync-active",
+ fb_mode->sync & FB_SYNC_VERT_HIGH_ACT ? 1 : 0);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("vsync-active",
+ fb_mode->sync & FB_SYNC_VERT_HIGH_ACT ? 1 : 0);
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("de-active",
+ !(fb_mode->sync & FB_SYNC_OE_LOW_ACT));
+ if (ret)
+ goto out;
+ ret = SET_FB_PROP("pixelclk-active",
+ !(fb_mode->sync & FB_SYNC_CLK_LAT_FALL));
+out:
+ karo_set_fdtsize(blob);
+ return ret;
}
-void *karo_fdt_load_dtb(void)
+int karo_fdt_update_fb_mode(void *blob, const char *name)
{
- int ret;
- void *fdt = (void *)getenv_ulong("fdtaddr", 16, 0);
+ int off = fdt_path_offset(blob, "display");
+ const char *subnode = "display-timings";
- if (tstc() || !fdt) {
- debug("aborting DTB load\n");
- return NULL;
+ if (off < 0)
+ return off;
+
+ if (name == NULL) {
+ int ret;
+
+ debug("Disabling node '%s' at %03x\n",
+ fdt_get_name(blob, off, NULL), off);
+ ret = fdt_set_node_status(blob, off, FDT_STATUS_DISABLED, 0);
+ return ret;
}
- /* clear FDT header in memory */
- memset(fdt, 0, 4);
+ off = fdt_subnode_offset(blob, off, subnode);
+ if (off < 0) {
+ debug("Could not find node '%s' in FDT: %s\n", subnode,
+ fdt_strerror(off));
+ return off;
+ }
+ while (off > 0) {
+ const char *n, *endp;
+ int len, d = 1;
+
+ off = fdt_next_node(blob, off, &d);
+ if (off < 0)
+ return off;
+ if (d < 1)
+ return -EINVAL;
+ if (d > 2) {
+ debug("Skipping node @ %04x %s depth %d\n", off,
+ fdt_get_name(blob, off, NULL), d);
+ continue;
+ }
+ debug("parsing subnode @ %04x %s depth %d\n", off,
+ fdt_get_name(blob, off, NULL), d);
+
+ n = fdt_getprop(blob, off, "panel-name", &len);
+ if (!n) {
+ n = fdt_get_name(blob, off, NULL);
+ if (strcasecmp(n, name) == 0) {
+ break;
+ }
+ } else {
+ int found = 0;
+
+ for (endp = n + len; n < endp; n += strlen(n) + 1) {
+ debug("Checking panel-name '%s'\n", n);
+ if (strcasecmp(n, name) == 0) {
+ debug("Using node %s @ %04x\n",
+ fdt_get_name(blob, off, NULL), off);
+ found = 1;
+ break;
+ }
+ }
+ if (found)
+ break;
+ }
+ }
+ if (off > 0)
+ return fdt_update_native_fb_mode(blob, off);
+ return off;
+}
- ret = karo_load_part("dtb", fdt, MAX_DTB_SIZE);
- if (ret) {
- printf("Failed to load dtb from flash: %d\n", ret);
- return NULL;
+#ifdef CONFIG_SYS_LVDS_IF
+int karo_fdt_get_lcd_bus_width(const void *blob, int default_width)
+{
+ int off = fdt_path_offset(blob, "display");
+
+ if (off >= 0) {
+ const uint32_t *prop;
+
+ prop = fdt_getprop(blob, off, "fsl,data-width", NULL);
+ if (prop)
+ return fdt32_to_cpu(*prop);
}
+ return default_width;
+}
- if (fdt_check_header(fdt)) {
- debug("No valid DTB in flash\n");
- return NULL;
+int karo_fdt_get_lvds_mapping(const void *blob, int default_mapping)
+{
+ int off = fdt_path_offset(blob, "display");
+
+ if (off >= 0) {
+ const char *prop;
+
+ prop = fdt_getprop(blob, off, "fsl,data-mapping", NULL);
+ if (prop)
+ return strcmp(prop, "jeida") == 0;
}
- debug("Using DTB from flash\n");
- karo_set_fdtsize(fdt);
- return fdt;
+ return default_mapping;
+}
+
+u8 karo_fdt_get_lvds_channels(const void *blob)
+{
+ static const char *lvds_chans[] = {
+ "lvds0",
+ "lvds1",
+ };
+ u8 lvds_chan_mask = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(lvds_chans); i++) {
+ const char *status;
+ int off = fdt_path_offset(blob, lvds_chans[i]);
+
+ if (off < 0)
+ continue;
+
+ status = fdt_getprop(blob, off, "status", NULL);
+ if (status && strcmp(status, "okay") == 0) {
+ debug("%s is enabled\n", lvds_chans[i]);
+ lvds_chan_mask |= 1 << i;
+ }
+ }
+ return lvds_chan_mask;
+}
+#endif
+
+int karo_fdt_get_backlight_polarity(const void *blob)
+{
+#ifdef CONFIG_SYS_LVDS_IF
+ const char *backlight_node = "/backlight0";
+#else
+ const char *backlight_node = "/backlight";
+#endif
+ int off = fdt_path_offset(blob, "backlight"); /* first try alias */
+ const struct fdt_property *prop;
+ int len;
+
+ if (off < 0) {
+ /*
+ * if no 'backlight' alias exists try finding '/backlight0'
+ * or '/backlight' depending on LVDS or not
+ */
+ off = fdt_path_offset(blob, backlight_node);
+ if (off < 0) {
+ printf("/backlight node not found in DT\n");
+ return off;
+ }
+ }
+
+ prop = fdt_get_property(blob, off, "pwms", &len);
+ if (!prop)
+ printf("'pwms' property not found\n");
+ else
+ debug("'pwms' property has len %d\n", len);
+
+ len /= sizeof(u32);
+ if (prop && len > 3) {
+ const u32 *data = (const u32 *)prop->data;
+ return fdt32_to_cpu(data[3]) == 0;
+ }
+ return 0;
}
projects / karo-tx-uboot.git / blobdiff