Djoumé SALVETTI <salvetti@crans.org> writes: > Le mercredi 10/20/04 Basile STARYNKEVITCH <basile@starynkevitch.net> a écrit : >> have the LCD back light be turned off when the cover is closed > > AFAIK there is still troubles with nvidia driver, I used offb with a > dirty patch (see attached) to make it working. Here is, attached, the same patch modified so that it applies cleanly on 2.6.9.
--- orig/drivers/video/offb.c 2004-10-21 14:08:48.880840848 +0200
+++ dest/drivers/video/offb.c 2004-10-21 14:09:07.522006960 +0200
@@ -29,10 +29,19 @@
#include <asm/io.h>
#include <asm/prom.h>
+#ifdef CONFIG_PMAC_BACKLIGHT
+#include <asm/backlight.h>
+#endif
+
#ifdef CONFIG_PPC32
#include <asm/bootx.h>
#endif
+#ifdef CONFIG_ADB_PMU
+#include <linux/adb.h>
+#include <linux/pmu.h>
+#endif
+
#include "macmodes.h"
/* Supported palette hacks */
@@ -75,6 +84,23 @@
extern boot_infos_t *boot_infos;
#endif
+#ifdef CONFIG_PMAC_BACKLIGHT
+static int nv_set_backlight_enable(int on, int level, void *data);
+static int nv_set_backlight_level(int level, void *data)
+{
+ return nv_set_backlight_enable(1, level, data);
+}
+static struct backlight_controller nv_backlight_controller = {
+ nv_set_backlight_enable,
+ nv_set_backlight_level,
+};
+static int nv_set_backlight_init(void);
+static int nv_sleep_notify(struct notifier_block *self, unsigned long, void *);
+static struct notifier_block nv_nb = {
+ nv_sleep_notify, NULL, 0,
+};
+#endif
+
static void offb_init_nodriver(struct device_node *);
static void offb_init_fb(const char *name, const char *full_name,
int width, int height, int depth, int pitch,
@@ -549,9 +575,82 @@
return;
}
+#ifdef CONFIG_PMAC_BACKLIGHT
+ if (strncmp(name, "NVDA,", 5) == 0) {
+ nv_set_backlight_init();
+ }
+#endif
+
printk(KERN_INFO "fb%d: Open Firmware frame buffer device on %s\n",
info->node, full_name);
}
+#ifdef CONFIG_PMAC_BACKLIGHT
+#define MMIO_BASE 0x91000000
+#define MMIO_SIZE 0x01000000
+
+static int nv_bk_level;
+
+volatile unsigned int *nv_mmio, *nv_pmc, *nv_pcrt;
+
+static int nv_set_backlight_enable(int on, int level, void *data)
+{
+ unsigned int tmp_pmc, tmp_pcrt;
+
+ tmp_pmc = nv_pmc[0x10F0/4] & 0x0000FFFF;
+ tmp_pcrt = nv_pcrt[0x081C/4];
+ nv_bk_level = level;
+ if (level == 0) { on = 0; }
+ if (on) {
+ tmp_pmc |= (1 << 31); // backlight bit
+ switch(level) {
+ case 15:
+ tmp_pmc |= 0x05340000; break;
+ default:
+ tmp_pmc |= (341 + (level * 53)) << 16;
+ }
+ } else {
+ tmp_pcrt &= 0xFFFFFFFC;
+ }
+ nv_pmc[0x10F0/4] = tmp_pmc;
+ nv_pcrt[0x081C/4] = tmp_pcrt;
+
+ return (0);
+}
+
+static int nv_set_backlight_init()
+{
+ nv_mmio = (unsigned int *)ioremap(MMIO_BASE, MMIO_SIZE);
+ if (!nv_mmio) {
+ printk("nv_backlight: cannot map memory map io\n");
+ return (-1);
+ }
+ nv_pmc = nv_mmio + 0x00000000/4;
+ nv_pcrt = nv_mmio + 0x00600000/4;
+
+ register_backlight_controller(&nv_backlight_controller, NULL, "mnca");
+
+ fb_register_client(&nv_nb);
+
+ return (0);
+}
+
+static int nv_sleep_notify(struct notifier_block *self,
+ unsigned long when, void *p)
+{
+ printk("nv_sleep_notify: ");
+ switch(when) {
+ case FB_EVENT_SUSPEND:
+ printk("sleep now\n");
+ break;
+ case FB_EVENT_RESUME:
+ printk("wakeup %d\n", nv_bk_level);
+ nv_set_backlight_enable(1, nv_bk_level, NULL);
+ break;
+ }
+ return PBOOK_SLEEP_OK;
+}
+#endif
+
module_init(offb_init);
MODULE_LICENSE("GPL");
Ciao, -- intrigeri <intrigeri@squat.net> gnupg key 0xCA80A0D2 @ keys.indymedia.org [ Who wants a world in which the guarantee that we shall not ] [ die of starvation entails the risk of dying of boredom ? ]
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