Message ID | 20220601172353.3220232-3-fkonrad@xilinx.com |
---|---|
State | New |
Headers | show |
Series | xlnx-zcu102: fix the display port. | expand |
On Thu, Jun 2, 2022 at 3:29 AM <frederic.konrad@xilinx.com> wrote: > > From: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com> > > Add a periodic timer which raises vblank at a frequency of 30Hz. > > Signed-off-by: Sai Pavan Boddu <saipava@xilinx.com> > Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> > Changes by fkonrad: > - Switched to transaction-based ptimer API. > - Added the DP_INT_VBLNK_START macro. > Signed-off-by: Frederic Konrad <fkonrad@amd.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Alistair > --- > hw/display/xlnx_dp.c | 28 +++++++++++++++++++++++++--- > include/hw/display/xlnx_dp.h | 3 +++ > 2 files changed, 28 insertions(+), 3 deletions(-) > > diff --git a/hw/display/xlnx_dp.c b/hw/display/xlnx_dp.c > index 0378570459..d0bea512bd 100644 > --- a/hw/display/xlnx_dp.c > +++ b/hw/display/xlnx_dp.c > @@ -114,6 +114,7 @@ > #define DP_TX_N_AUD (0x032C >> 2) > #define DP_TX_AUDIO_EXT_DATA(n) ((0x0330 + 4 * n) >> 2) > #define DP_INT_STATUS (0x03A0 >> 2) > +#define DP_INT_VBLNK_START (1 << 13) > #define DP_INT_MASK (0x03A4 >> 2) > #define DP_INT_EN (0x03A8 >> 2) > #define DP_INT_DS (0x03AC >> 2) > @@ -270,10 +271,15 @@ static const VMStateDescription vmstate_dp = { > DP_VBLEND_REG_ARRAY_SIZE), > VMSTATE_UINT32_ARRAY(audio_registers, XlnxDPState, > DP_AUDIO_REG_ARRAY_SIZE), > + VMSTATE_PTIMER(vblank, XlnxDPState), > VMSTATE_END_OF_LIST() > } > }; > > +#define DP_VBLANK_PTIMER_POLICY (PTIMER_POLICY_WRAP_AFTER_ONE_PERIOD | \ > + PTIMER_POLICY_CONTINUOUS_TRIGGER | \ > + PTIMER_POLICY_NO_IMMEDIATE_TRIGGER) > + > static void xlnx_dp_update_irq(XlnxDPState *s); > > static uint64_t xlnx_dp_audio_read(void *opaque, hwaddr offset, unsigned size) > @@ -773,6 +779,13 @@ static void xlnx_dp_write(void *opaque, hwaddr offset, uint64_t value, > break; > case DP_TRANSMITTER_ENABLE: > s->core_registers[offset] = value & 0x01; > + ptimer_transaction_begin(s->vblank); > + if (value & 0x1) { > + ptimer_run(s->vblank, 0); > + } else { > + ptimer_stop(s->vblank); > + } > + ptimer_transaction_commit(s->vblank); > break; > case DP_FORCE_SCRAMBLER_RESET: > /* > @@ -1177,9 +1190,6 @@ static void xlnx_dp_update_display(void *opaque) > return; > } > > - s->core_registers[DP_INT_STATUS] |= (1 << 13); > - xlnx_dp_update_irq(s); > - > xlnx_dpdma_trigger_vsync_irq(s->dpdma); > > /* > @@ -1275,6 +1285,14 @@ static void xlnx_dp_finalize(Object *obj) > fifo8_destroy(&s->rx_fifo); > } > > +static void vblank_hit(void *opaque) > +{ > + XlnxDPState *s = XLNX_DP(opaque); > + > + s->core_registers[DP_INT_STATUS] |= DP_INT_VBLNK_START; > + xlnx_dp_update_irq(s); > +} > + > static void xlnx_dp_realize(DeviceState *dev, Error **errp) > { > XlnxDPState *s = XLNX_DP(dev); > @@ -1309,6 +1327,10 @@ static void xlnx_dp_realize(DeviceState *dev, Error **errp) > &as); > AUD_set_volume_out(s->amixer_output_stream, 0, 255, 255); > xlnx_dp_audio_activate(s); > + s->vblank = ptimer_init(vblank_hit, s, DP_VBLANK_PTIMER_POLICY); > + ptimer_transaction_begin(s->vblank); > + ptimer_set_freq(s->vblank, 30); > + ptimer_transaction_commit(s->vblank); > } > > static void xlnx_dp_reset(DeviceState *dev) > diff --git a/include/hw/display/xlnx_dp.h b/include/hw/display/xlnx_dp.h > index 1ef5a89ee7..e86a87f235 100644 > --- a/include/hw/display/xlnx_dp.h > +++ b/include/hw/display/xlnx_dp.h > @@ -35,6 +35,7 @@ > #include "hw/dma/xlnx_dpdma.h" > #include "audio/audio.h" > #include "qom/object.h" > +#include "hw/ptimer.h" > > #define AUD_CHBUF_MAX_DEPTH (32 * KiB) > #define MAX_QEMU_BUFFER_SIZE (4 * KiB) > @@ -107,6 +108,8 @@ struct XlnxDPState { > */ > DPCDState *dpcd; > I2CDDCState *edid; > + > + ptimer_state *vblank; > }; > > #define TYPE_XLNX_DP "xlnx.v-dp" > -- > 2.25.1 > >
diff --git a/hw/display/xlnx_dp.c b/hw/display/xlnx_dp.c index 0378570459..d0bea512bd 100644 --- a/hw/display/xlnx_dp.c +++ b/hw/display/xlnx_dp.c @@ -114,6 +114,7 @@ #define DP_TX_N_AUD (0x032C >> 2) #define DP_TX_AUDIO_EXT_DATA(n) ((0x0330 + 4 * n) >> 2) #define DP_INT_STATUS (0x03A0 >> 2) +#define DP_INT_VBLNK_START (1 << 13) #define DP_INT_MASK (0x03A4 >> 2) #define DP_INT_EN (0x03A8 >> 2) #define DP_INT_DS (0x03AC >> 2) @@ -270,10 +271,15 @@ static const VMStateDescription vmstate_dp = { DP_VBLEND_REG_ARRAY_SIZE), VMSTATE_UINT32_ARRAY(audio_registers, XlnxDPState, DP_AUDIO_REG_ARRAY_SIZE), + VMSTATE_PTIMER(vblank, XlnxDPState), VMSTATE_END_OF_LIST() } }; +#define DP_VBLANK_PTIMER_POLICY (PTIMER_POLICY_WRAP_AFTER_ONE_PERIOD | \ + PTIMER_POLICY_CONTINUOUS_TRIGGER | \ + PTIMER_POLICY_NO_IMMEDIATE_TRIGGER) + static void xlnx_dp_update_irq(XlnxDPState *s); static uint64_t xlnx_dp_audio_read(void *opaque, hwaddr offset, unsigned size) @@ -773,6 +779,13 @@ static void xlnx_dp_write(void *opaque, hwaddr offset, uint64_t value, break; case DP_TRANSMITTER_ENABLE: s->core_registers[offset] = value & 0x01; + ptimer_transaction_begin(s->vblank); + if (value & 0x1) { + ptimer_run(s->vblank, 0); + } else { + ptimer_stop(s->vblank); + } + ptimer_transaction_commit(s->vblank); break; case DP_FORCE_SCRAMBLER_RESET: /* @@ -1177,9 +1190,6 @@ static void xlnx_dp_update_display(void *opaque) return; } - s->core_registers[DP_INT_STATUS] |= (1 << 13); - xlnx_dp_update_irq(s); - xlnx_dpdma_trigger_vsync_irq(s->dpdma); /* @@ -1275,6 +1285,14 @@ static void xlnx_dp_finalize(Object *obj) fifo8_destroy(&s->rx_fifo); } +static void vblank_hit(void *opaque) +{ + XlnxDPState *s = XLNX_DP(opaque); + + s->core_registers[DP_INT_STATUS] |= DP_INT_VBLNK_START; + xlnx_dp_update_irq(s); +} + static void xlnx_dp_realize(DeviceState *dev, Error **errp) { XlnxDPState *s = XLNX_DP(dev); @@ -1309,6 +1327,10 @@ static void xlnx_dp_realize(DeviceState *dev, Error **errp) &as); AUD_set_volume_out(s->amixer_output_stream, 0, 255, 255); xlnx_dp_audio_activate(s); + s->vblank = ptimer_init(vblank_hit, s, DP_VBLANK_PTIMER_POLICY); + ptimer_transaction_begin(s->vblank); + ptimer_set_freq(s->vblank, 30); + ptimer_transaction_commit(s->vblank); } static void xlnx_dp_reset(DeviceState *dev) diff --git a/include/hw/display/xlnx_dp.h b/include/hw/display/xlnx_dp.h index 1ef5a89ee7..e86a87f235 100644 --- a/include/hw/display/xlnx_dp.h +++ b/include/hw/display/xlnx_dp.h @@ -35,6 +35,7 @@ #include "hw/dma/xlnx_dpdma.h" #include "audio/audio.h" #include "qom/object.h" +#include "hw/ptimer.h" #define AUD_CHBUF_MAX_DEPTH (32 * KiB) #define MAX_QEMU_BUFFER_SIZE (4 * KiB) @@ -107,6 +108,8 @@ struct XlnxDPState { */ DPCDState *dpcd; I2CDDCState *edid; + + ptimer_state *vblank; }; #define TYPE_XLNX_DP "xlnx.v-dp"