acpi vaio lcd brightness driver
hello,
because I could not change the excessive lcd brightness of my laptop under
openbsd I started searching for... this article
http://www.linux.it/~malattia/wiki/index.php/Sony-laptop
was the inspiration and I wrote this humble basic driver.
here it works well and I think it should also work for others
vaio laptops (or at least for vaios that have SBRT/GBRT acpi methods.
...
acpidock at acpi0 not configured
acpisnc0 at acpi0: SNC_
...
usage:
sysctl -w hw.brightness=0..8
giovanni
diff -ruN sys.orig/arch/i386/conf/GENERIC sys/arch/i386/conf/GENERIC
--- sys.orig/arch/i386/conf/GENERIC Fri Apr 27 11:03:35 2007
+++ sys/arch/i386/conf/GENERIC Sat Apr 28 09:22:37 2007
@@ -59,7 +59,7 @@
pci* at mainbus0
#optionACPIVERBOSE
-#optionACPI_ENABLE
+option ACPI_ENABLE
acpi0 at mainbus? disable
#acpitimer*at acpi?
@@ -72,6 +72,7 @@
acpiec*at acpi?disable
acpiprt* at acpi?
#acpitz* at acpi?
+acpisnc* at acpi? # sony notebook controller
option PCIVERBOSE
option EISAVERBOSE
diff -ruN sys.orig/dev/acpi/acpi.c sys/dev/acpi/acpi.c
--- sys.orig/dev/acpi/acpi.cFri Apr 27 10:46:22 2007
+++ sys/dev/acpi/acpi.c Sat Apr 28 08:57:53 2007
@@ -65,6 +65,7 @@
void acpi_foundec(struct aml_node *, void *);
void acpi_foundtmp(struct aml_node *, void *);
void acpi_inidev(struct aml_node *, void *);
+void acpi_foundsnc(struct aml_node *, void *);
intacpi_loadtables(struct acpi_softc *, struct acpi_rsdp *);
void acpi_load_table(paddr_t, size_t, acpi_qhead_t *);
@@ -573,6 +574,9 @@
/* attach docks */
aml_find_node(aml_root.child, "_DCK", acpi_founddock, sc);
+ /* attach sony notebook control */
+ aml_find_node(aml_root.child, "GBRT", acpi_foundsnc, sc);
+
/* create list of devices we want to query when APM come in */
SLIST_INIT(&sc->sc_ac);
SLIST_INIT(&sc->sc_bat);
@@ -1718,4 +1722,24 @@
config_found(self, &aaa, acpi_print);
}
+
+void
+acpi_foundsnc(struct aml_node *node, void *arg)
+{
+ struct acpi_softc *sc = (struct acpi_softc *)arg;
+ struct device *self = (struct device *)arg;
+ const char*dev;
+ struct acpi_attach_args aaa;
+
+ dnprintf(10, "found snc entry: %s\n", node->parent->name);
+ memset(&aaa, 0, sizeof(aaa));
+ aaa.aaa_iot = sc->sc_iot;
+ aaa.aaa_memt = sc->sc_memt;
+ aaa.aaa_node = node->parent;
+ aaa.aaa_dev = dev;
+ aaa.aaa_name = "acpisnc";
+
+ config_found(self, &aaa, acpi_print);
+}
+
#endif /* SMALL_KERNEL */
diff -ruN sys.orig/dev/acpi/acpidev.h sys/dev/acpi/acpidev.h
--- sys.orig/dev/acpi/acpidev.h Fri Apr 27 10:46:22 2007
+++ sys/dev/acpi/acpidev.h Sat Apr 28 07:33:48 2007
@@ -311,5 +311,14 @@
#define ACPIDOCK_EVENT_INSERT 0
#defineACPIDOCK_EVENT_EJECT3
+struct acpisnc_softc {
+ struct device sc_dev;
+
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_ioh;
+
+ struct acpi_softc *sc_acpi;
+ struct aml_node *sc_devnode;
+};
#endif /* __DEV_ACPI_ACPIDEV_H__ */
diff -ruN sys.orig/dev/acpi/acpisnc.c sys/dev/acpi/acpisnc.c
--- sys.orig/dev/acpi/acpisnc.c Thu Jan 1 01:00:00 1970
+++ sys/dev/acpi/acpisnc.c Sat Apr 28 15:14:59 2007
@@ -0,0 +1,89 @@
+#include
+#include
+#include
+#include
+#include
+
+#include
+
+#include
+#include
+#include
+#include
+#include
+
+extern int brtlevel;
+
+intacpisnc_match(struct device *, void *, void *);
+void acpisnc_attach(struct device *, struct device *, void *);
+void brightness(int*);
+
+static struct acpisnc_softc*sc;
+
+struct cfattach acpisnc_ca = {
+ sizeof(struct acpisnc_softc), acpisnc_match, acpisnc_attach
+};
+
+struct cfdriver acpisnc_cd = {
+ NULL, "acpisnc", DV_DULL
+};
+
+int
+acpisnc_match(struct device *parent, void *match, void *aux)
+{
+ struct acpi_attach_args *aaa = aux;
+ struct cfdata*cf = match;
+
+ /* sanity */
+ if (aaa->aaa_name == NULL ||
+ strcmp(aaa->aaa_name, cf->cf_driver->cd_name) != 0 ||
+ aaa->aaa_table != NULL)
+ return (0);
+
+ return (1);
+}
+
+void
+acpisnc_attach(struct device *parent, struct device *self, void *aux)
+{
+ sc = (struct acpisnc_softc *)self;
+ struct acpi_attach_args *aa = aux;
+ struct aml_valueres;
+
+ sc->sc_acpi = (struct acpi_softc *)parent;
+ sc->sc_devnode = aa->aaa_node->child;
+
+ printf(": %s\n", sc->sc_devnode->parent->name);
+
+ /* read GBRT i.e default stored brighteness level */
+ if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "GBRT", 0, NULL, &res)) {
+ dnprintf(10, "%s: error reading current brightness",
DEVNAME(sc));
+ goto err;
+ }
+
Re: acpi vaio lcd brightness driver
Cool. What I am not sure about is if we want to have a bunch of little
vendor drivers or a big driver that does all the vendor stuff. I need
to think this through. Any comments?
giovanni wrote:
hello,
because I could not change the excessive lcd brightness of my laptop
under openbsd I started searching for... this article
http://www.linux.it/~malattia/wiki/index.php/Sony-laptop
was the inspiration and I wrote this humble basic driver.
here it works well and I think it should also work for others
vaio laptops (or at least for vaios that have SBRT/GBRT acpi methods.
...
acpidock at acpi0 not configured
acpisnc0 at acpi0: SNC_
...
usage:
sysctl -w hw.brightness=0..8
giovanni
diff -ruN sys.orig/arch/i386/conf/GENERIC sys/arch/i386/conf/GENERIC
--- sys.orig/arch/i386/conf/GENERICFri Apr 27 11:03:35 2007
+++ sys/arch/i386/conf/GENERICSat Apr 28 09:22:37 2007
@@ -59,7 +59,7 @@
pci*at mainbus0
#optionACPIVERBOSE
-#optionACPI_ENABLE
+optionACPI_ENABLE
acpi0at mainbus?disable
#acpitimer*at acpi?
@@ -72,6 +72,7 @@
acpiec*at acpi?disable
acpiprt*at acpi?
#acpitz*at acpi?
+acpisnc* at acpi?# sony notebook controller
optionPCIVERBOSE
optionEISAVERBOSE
diff -ruN sys.orig/dev/acpi/acpi.c sys/dev/acpi/acpi.c
--- sys.orig/dev/acpi/acpi.cFri Apr 27 10:46:22 2007
+++ sys/dev/acpi/acpi.cSat Apr 28 08:57:53 2007
@@ -65,6 +65,7 @@
voidacpi_foundec(struct aml_node *, void *);
voidacpi_foundtmp(struct aml_node *, void *);
voidacpi_inidev(struct aml_node *, void *);
+void acpi_foundsnc(struct aml_node *, void *);
intacpi_loadtables(struct acpi_softc *, struct acpi_rsdp *);
voidacpi_load_table(paddr_t, size_t, acpi_qhead_t *);
@@ -573,6 +574,9 @@
/* attach docks */
aml_find_node(aml_root.child, "_DCK", acpi_founddock, sc);
+ /* attach sony notebook control */
+ aml_find_node(aml_root.child, "GBRT", acpi_foundsnc, sc);
+
/* create list of devices we want to query when APM come in */
SLIST_INIT(&sc->sc_ac);
SLIST_INIT(&sc->sc_bat);
@@ -1718,4 +1722,24 @@
config_found(self, &aaa, acpi_print);
}
+
+void
+acpi_foundsnc(struct aml_node *node, void *arg)
+{
+struct acpi_softc *sc = (struct acpi_softc *)arg;
+struct device *self = (struct device *)arg;
+const char*dev;
+struct acpi_attach_args aaa;
+
+dnprintf(10, "found snc entry: %s\n", node->parent->name);
+memset(&aaa, 0, sizeof(aaa));
+aaa.aaa_iot = sc->sc_iot;
+aaa.aaa_memt = sc->sc_memt;
+aaa.aaa_node = node->parent;
+aaa.aaa_dev = dev;
+aaa.aaa_name = "acpisnc";
+
+config_found(self, &aaa, acpi_print);
+}
+
#endif /* SMALL_KERNEL */
diff -ruN sys.orig/dev/acpi/acpidev.h sys/dev/acpi/acpidev.h
--- sys.orig/dev/acpi/acpidev.hFri Apr 27 10:46:22 2007
+++ sys/dev/acpi/acpidev.hSat Apr 28 07:33:48 2007
@@ -311,5 +311,14 @@
#define ACPIDOCK_EVENT_INSERT0
#defineACPIDOCK_EVENT_EJECT3
+struct acpisnc_softc {
+struct device sc_dev;
+
+bus_space_tag_t sc_iot;
+bus_space_handle_tsc_ioh;
+
+struct acpi_softc *sc_acpi;
+struct aml_node *sc_devnode;
+};
#endif /* __DEV_ACPI_ACPIDEV_H__ */
diff -ruN sys.orig/dev/acpi/acpisnc.c sys/dev/acpi/acpisnc.c
--- sys.orig/dev/acpi/acpisnc.cThu Jan 1 01:00:00 1970
+++ sys/dev/acpi/acpisnc.cSat Apr 28 15:14:59 2007
@@ -0,0 +1,89 @@
+#include
+#include
+#include
+#include
+#include
+
+#include
+
+#include
+#include
+#include
+#include
+#include
+
+extern int brtlevel;
+
+intacpisnc_match(struct device *, void *, void *);
+void acpisnc_attach(struct device *, struct device *, void *);
+void brightness(int*);
+
+static struct acpisnc_softc*sc;
+
+struct cfattach acpisnc_ca = {
+sizeof(struct acpisnc_softc), acpisnc_match, acpisnc_attach
+};
+
+struct cfdriver acpisnc_cd = {
+NULL, "acpisnc", DV_DULL
+};
+
+int
+acpisnc_match(struct device *parent, void *match, void *aux)
+{
+struct acpi_attach_args *aaa = aux;
+struct cfdata *cf = match;
+
+/* sanity */
+if (aaa->aaa_name == NULL ||
+strcmp(aaa->aaa_name, cf->cf_driver->cd_name) != 0 ||
+aaa->aaa_table != NULL)
+return (0);
+
+return (1);
+}
+
+void
+acpisnc_attach(struct device *parent, struct device *self, void *aux)
+{
+sc = (struct acpisnc_softc *)self;
+struct acpi_attach_args *aa = aux;
+struct aml_valueres;
+
+sc->sc_acpi = (struct acpi_softc *)parent;
+sc->sc_devnode = aa->aaa_node->child;
+
+printf(": %s\n", sc->sc_devnode->parent->name);
+
+/* read GBRT i.e default stored brighteness level */
+if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "GBRT", 0, NULL,
&res)) {
+dnprintf(10, "%s: error reading current brightness", DEVNAME(sc));
+goto err;
+}
+
+brtlevel = aml_val2int(&res);
+
Re: acpi vaio lcd brightness driver
On 5/7/07, Marco Peereboom <[EMAIL PROTECTED]> wrote: Cool. What I am not sure about is if we want to have a bunch of little vendor drivers or a big driver that does all the vendor stuff. I need to think this through. Any comments? this could all be taken care of by button, no? even if they are not buttons? there's not much advantage to adding 99 differenent devices for every laptop made. original file needs a license too, btw.
Re: acpi vaio lcd brightness driver
Yeah that is what I am thinking too. Giovanni do you think you think you could hack that up? On Mon, May 07, 2007 at 11:11:10AM -0700, Ted Unangst wrote: > On 5/7/07, Marco Peereboom <[EMAIL PROTECTED]> wrote: > >Cool. What I am not sure about is if we want to have a bunch of little > >vendor drivers or a big driver that does all the vendor stuff. I need > >to think this through. Any comments? > > this could all be taken care of by button, no? even if they are not > buttons? there's not much advantage to adding 99 differenent devices > for every laptop made. > > original file needs a license too, btw.
