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drm/nouveau/gpio: reimplement as nouveau_gpio.c, fixing a number of issues

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- moves out of nouveau_bios.c and demagics the logical state definitions
- simplifies chipset-specific driver interface
- makes most of gpio irq handling common, will use for nv4x hpd later
- api extended to allow both direct gpio access, and access using the
  logical function states
- api extended to allow for future use of gpio extender chips
- pre-nv50 was handled very badly, the main issue being that all GPIOs
  were being treated as output-only.
- fixes nvd0 so gpio changes actually stick, magic reg needs bashing

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs
2011-11-21 16:41:48 +10:00
parent 675aac033e
commit a0b2563551
16 changed files with 655 additions and 648 deletions
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14
drivers/gpu/drm/nouveau/nv04_dac.c
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@@ -32,6 +32,7 @@
#include "nouveau_connector.h"
#include "nouveau_crtc.h"
#include "nouveau_hw.h"
#include "nouveau_gpio.h"
#include "nvreg.h"
int nv04_dac_output_offset(struct drm_encoder *encoder)
@@ -220,7 +221,6 @@ uint32_t nv17_dac_sample_load(struct drm_encoder *encoder)
{
struct drm_device *dev = encoder->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_gpio_engine *gpio = &dev_priv->engine.gpio;
struct dcb_entry *dcb = nouveau_encoder(encoder)->dcb;
uint32_t sample, testval, regoffset = nv04_dac_output_offset(encoder);
uint32_t saved_powerctrl_2 = 0, saved_powerctrl_4 = 0, saved_routput,
@@ -252,11 +252,11 @@ uint32_t nv17_dac_sample_load(struct drm_encoder *encoder)
nvWriteMC(dev, NV_PBUS_POWERCTRL_4, saved_powerctrl_4 & 0xffffffcf);
}
saved_gpio1 = gpio->get(dev, DCB_GPIO_TVDAC1);
saved_gpio0 = gpio->get(dev, DCB_GPIO_TVDAC0);
saved_gpio1 = nouveau_gpio_func_get(dev, DCB_GPIO_TVDAC1);
saved_gpio0 = nouveau_gpio_func_get(dev, DCB_GPIO_TVDAC0);
gpio->set(dev, DCB_GPIO_TVDAC1, dcb->type == OUTPUT_TV);
gpio->set(dev, DCB_GPIO_TVDAC0, dcb->type == OUTPUT_TV);
nouveau_gpio_func_set(dev, DCB_GPIO_TVDAC1, dcb->type == OUTPUT_TV);
nouveau_gpio_func_set(dev, DCB_GPIO_TVDAC0, dcb->type == OUTPUT_TV);
msleep(4);
@@ -306,8 +306,8 @@ uint32_t nv17_dac_sample_load(struct drm_encoder *encoder)
nvWriteMC(dev, NV_PBUS_POWERCTRL_4, saved_powerctrl_4);
nvWriteMC(dev, NV_PBUS_POWERCTRL_2, saved_powerctrl_2);
gpio->set(dev, DCB_GPIO_TVDAC1, saved_gpio1);
gpio->set(dev, DCB_GPIO_TVDAC0, saved_gpio0);
nouveau_gpio_func_set(dev, DCB_GPIO_TVDAC1, saved_gpio1);
nouveau_gpio_func_set(dev, DCB_GPIO_TVDAC0, saved_gpio0);
return sample;
}