diff options
| author | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2011-07-30 05:25:29 +0400 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-02-10 23:11:51 +0400 |
| commit | e75892715db800ee96fe4ac0407b73b57d866a68 (patch) | |
| tree | 0334ac5bf57d2d94f3c1439ea09844874913dd56 /drivers/video/via/viafbdev.c | |
| parent | d65b4e98d7ea3038b767b70fe8be959b2913f16d (diff) | |
| download | linux-e75892715db800ee96fe4ac0407b73b57d866a68.tar.xz | |
viafb: add auxiliary device management infrastructure
This patch adds the basic infrastructure and a few stub drivers for
devices that are connected via I2C busses. The infrastructure will
be used to replace and extend the support that is scattered
throughout viafb. The stub drivers are not very useful yet but they
show how the infrastructure works, provide information about the
chips integrated into a system and maybe gather some testers as it
would be very difficult for a single person to get a sane test
environment.
The only thing this actually does is probing the I2C busses which
will hopefully not cause any regressions.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/via/viafbdev.c')
| -rw-r--r-- | drivers/video/via/viafbdev.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c index a13c258bd32f..6d5b64923236 100644 --- a/drivers/video/via/viafbdev.c +++ b/drivers/video/via/viafbdev.c @@ -24,6 +24,7 @@ #include <linux/slab.h> #include <linux/stat.h> #include <linux/via-core.h> +#include <linux/via_i2c.h> #include <asm/olpc.h> #define _MASTER_FILE @@ -1729,6 +1730,29 @@ static struct viafb_pm_hooks viafb_fb_pm_hooks = { #endif +static void __devinit i2c_bus_probe(struct viafb_shared *shared) +{ + /* should be always CRT */ + printk(KERN_INFO "viafb: Probing I2C bus 0x26\n"); + shared->i2c_26 = via_aux_probe(viafb_find_i2c_adapter(VIA_PORT_26)); + + /* seems to be usually DVP1 */ + printk(KERN_INFO "viafb: Probing I2C bus 0x31\n"); + shared->i2c_31 = via_aux_probe(viafb_find_i2c_adapter(VIA_PORT_31)); + + /* FIXME: what is this? */ + printk(KERN_INFO "viafb: Probing I2C bus 0x2C\n"); + shared->i2c_2C = via_aux_probe(viafb_find_i2c_adapter(VIA_PORT_2C)); + + printk(KERN_INFO "viafb: Finished I2C bus probing"); +} + +static void i2c_bus_free(struct viafb_shared *shared) +{ + via_aux_free(shared->i2c_26); + via_aux_free(shared->i2c_31); + via_aux_free(shared->i2c_2C); +} int __devinit via_fb_pci_probe(struct viafb_dev *vdev) { @@ -1762,6 +1786,7 @@ int __devinit via_fb_pci_probe(struct viafb_dev *vdev) &viaparinfo->shared->lvds_setting_info2; viaparinfo->chip_info = &viaparinfo->shared->chip_info; + i2c_bus_probe(viaparinfo->shared); if (viafb_dual_fb) viafb_SAMM_ON = 1; parse_lcd_port(); @@ -1915,6 +1940,7 @@ out_fb1_release: if (viafbinfo1) framebuffer_release(viafbinfo1); out_fb_release: + i2c_bus_free(viaparinfo->shared); framebuffer_release(viafbinfo); return rc; } @@ -1927,6 +1953,7 @@ void __devexit via_fb_pci_remove(struct pci_dev *pdev) if (viafb_dual_fb) unregister_framebuffer(viafbinfo1); viafb_remove_proc(viaparinfo->shared); + i2c_bus_free(viaparinfo->shared); framebuffer_release(viafbinfo); if (viafb_dual_fb) framebuffer_release(viafbinfo1); |