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authorAlex Deucher <alexdeucher@gmail.com>2009-12-04 21:04:19 +0100
committerDave Airlie <airlied@redhat.com>2009-12-08 01:47:58 +0100
commitdcfdd4083509f9c46b1e92c58c062d50da50580e (patch)
tree3d6c6fe080491e3a3848390652dab7c9234469cd /drivers/gpu
parentdrm/radeon/kms: add hpd support for r1xx-r4xx asics (diff)
downloadlinux-dcfdd4083509f9c46b1e92c58c062d50da50580e.tar.xz
linux-dcfdd4083509f9c46b1e92c58c062d50da50580e.zip
drm/radeon/kms: add hpd support for r5xx/rs600/rs690/rs740 asics
This just adds the functionality, it's not hooked up yet. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/rs600.c130
1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 84b26376027d..6364ba1d4153 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -60,6 +60,107 @@ int rs600_mc_init(struct radeon_device *rdev)
return r;
return 0;
}
+
+/* hpd for digital panel detect/disconnect */
+bool rs600_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
+{
+ u32 tmp;
+ bool connected = false;
+
+ switch (hpd) {
+ case RADEON_HPD_1:
+ tmp = RREG32(R_007D04_DC_HOT_PLUG_DETECT1_INT_STATUS);
+ if (G_007D04_DC_HOT_PLUG_DETECT1_SENSE(tmp))
+ connected = true;
+ break;
+ case RADEON_HPD_2:
+ tmp = RREG32(R_007D14_DC_HOT_PLUG_DETECT2_INT_STATUS);
+ if (G_007D14_DC_HOT_PLUG_DETECT2_SENSE(tmp))
+ connected = true;
+ break;
+ default:
+ break;
+ }
+ return connected;
+}
+
+void rs600_hpd_set_polarity(struct radeon_device *rdev,
+ enum radeon_hpd_id hpd)
+{
+ u32 tmp;
+ bool connected = rs600_hpd_sense(rdev, hpd);
+
+ switch (hpd) {
+ case RADEON_HPD_1:
+ tmp = RREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL);
+ if (connected)
+ tmp &= ~S_007D08_DC_HOT_PLUG_DETECT1_INT_POLARITY(1);
+ else
+ tmp |= S_007D08_DC_HOT_PLUG_DETECT1_INT_POLARITY(1);
+ WREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL, tmp);
+ break;
+ case RADEON_HPD_2:
+ tmp = RREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL);
+ if (connected)
+ tmp &= ~S_007D18_DC_HOT_PLUG_DETECT2_INT_POLARITY(1);
+ else
+ tmp |= S_007D18_DC_HOT_PLUG_DETECT2_INT_POLARITY(1);
+ WREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);
+ break;
+ default:
+ break;
+ }
+}
+
+void rs600_hpd_init(struct radeon_device *rdev)
+{
+ struct drm_device *dev = rdev->ddev;
+ struct drm_connector *connector;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+ switch (radeon_connector->hpd.hpd) {
+ case RADEON_HPD_1:
+ WREG32(R_007D00_DC_HOT_PLUG_DETECT1_CONTROL,
+ S_007D00_DC_HOT_PLUG_DETECT1_EN(1));
+ rdev->irq.hpd[0] = true;
+ break;
+ case RADEON_HPD_2:
+ WREG32(R_007D10_DC_HOT_PLUG_DETECT2_CONTROL,
+ S_007D10_DC_HOT_PLUG_DETECT2_EN(1));
+ rdev->irq.hpd[1] = true;
+ break;
+ default:
+ break;
+ }
+ }
+ rs600_irq_set(rdev);
+}
+
+void rs600_hpd_fini(struct radeon_device *rdev)
+{
+ struct drm_device *dev = rdev->ddev;
+ struct drm_connector *connector;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+ switch (radeon_connector->hpd.hpd) {
+ case RADEON_HPD_1:
+ WREG32(R_007D00_DC_HOT_PLUG_DETECT1_CONTROL,
+ S_007D00_DC_HOT_PLUG_DETECT1_EN(0));
+ rdev->irq.hpd[0] = false;
+ break;
+ case RADEON_HPD_2:
+ WREG32(R_007D10_DC_HOT_PLUG_DETECT2_CONTROL,
+ S_007D10_DC_HOT_PLUG_DETECT2_EN(0));
+ rdev->irq.hpd[1] = false;
+ break;
+ default:
+ break;
+ }
+ }
+}
+
/*
* GART.
*/
@@ -209,6 +310,10 @@ int rs600_irq_set(struct radeon_device *rdev)
{
uint32_t tmp = 0;
uint32_t mode_int = 0;
+ u32 hpd1 = RREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL) &
+ ~S_007D08_DC_HOT_PLUG_DETECT1_INT_EN(1);
+ u32 hpd2 = RREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL) &
+ ~S_007D18_DC_HOT_PLUG_DETECT2_INT_EN(1);
if (rdev->irq.sw_int) {
tmp |= S_000040_SW_INT_EN(1);
@@ -219,8 +324,16 @@ int rs600_irq_set(struct radeon_device *rdev)
if (rdev->irq.crtc_vblank_int[1]) {
mode_int |= S_006540_D2MODE_VBLANK_INT_MASK(1);
}
+ if (rdev->irq.hpd[0]) {
+ hpd1 |= S_007D08_DC_HOT_PLUG_DETECT1_INT_EN(1);
+ }
+ if (rdev->irq.hpd[1]) {
+ hpd2 |= S_007D18_DC_HOT_PLUG_DETECT2_INT_EN(1);
+ }
WREG32(R_000040_GEN_INT_CNTL, tmp);
WREG32(R_006540_DxMODE_INT_MASK, mode_int);
+ WREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL, hpd1);
+ WREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL, hpd2);
return 0;
}
@@ -228,6 +341,7 @@ static inline uint32_t rs600_irq_ack(struct radeon_device *rdev, u32 *r500_disp_
{
uint32_t irqs = RREG32(R_000044_GEN_INT_STATUS);
uint32_t irq_mask = ~C_000044_SW_INT;
+ u32 tmp;
if (G_000044_DISPLAY_INT_STAT(irqs)) {
*r500_disp_int = RREG32(R_007EDC_DISP_INTERRUPT_STATUS);
@@ -239,6 +353,16 @@ static inline uint32_t rs600_irq_ack(struct radeon_device *rdev, u32 *r500_disp_
WREG32(R_006D34_D2MODE_VBLANK_STATUS,
S_006D34_D2MODE_VBLANK_ACK(1));
}
+ if (G_007EDC_DC_HOT_PLUG_DETECT1_INTERRUPT(*r500_disp_int)) {
+ tmp = RREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL);
+ tmp |= S_007D08_DC_HOT_PLUG_DETECT1_INT_ACK(1);
+ WREG32(R_007D08_DC_HOT_PLUG_DETECT1_INT_CONTROL, tmp);
+ }
+ if (G_007EDC_DC_HOT_PLUG_DETECT2_INTERRUPT(*r500_disp_int)) {
+ tmp = RREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL);
+ tmp |= S_007D18_DC_HOT_PLUG_DETECT2_INT_ACK(1);
+ WREG32(R_007D18_DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);
+ }
} else {
*r500_disp_int = 0;
}
@@ -278,6 +402,12 @@ int rs600_irq_process(struct radeon_device *rdev)
drm_handle_vblank(rdev->ddev, 0);
if (G_007EDC_LB_D2_VBLANK_INTERRUPT(r500_disp_int))
drm_handle_vblank(rdev->ddev, 1);
+ if (G_007EDC_DC_HOT_PLUG_DETECT1_INTERRUPT(r500_disp_int)) {
+ DRM_INFO("HPD1\n");
+ }
+ if (G_007EDC_DC_HOT_PLUG_DETECT2_INTERRUPT(r500_disp_int)) {
+ DRM_INFO("HPD2\n");
+ }
status = rs600_irq_ack(rdev, &r500_disp_int);
}
if (rdev->msi_enabled) {