[Intel-gfx] [PATCH 29/58] drm/i915/dvo: implement get_hw_state
Jesse Barnes
jbarnes at virtuousgeek.org
Tue Sep 4 22:32:02 CEST 2012
On Sun, 19 Aug 2012 21:12:46 +0200
Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> Similar to the sdvo code we poke the dvo encoder whether the output is
> active. Safe that dvo encoders are not standardized, so this requires
> a new callback into the dvo chip driver.
>
> Hence implement that for all 6 dvo drivers.
>
> v2: With the newly added ns2501 we now have 6 dvo drivers instead of
> just 5 ...
>
> Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/i915/dvo.h | 6 ++++++
> drivers/gpu/drm/i915/dvo_ch7017.c | 13 +++++++++++++
> drivers/gpu/drm/i915/dvo_ch7xxx.c | 13 +++++++++++++
> drivers/gpu/drm/i915/dvo_ivch.c | 15 +++++++++++++++
> drivers/gpu/drm/i915/dvo_ns2501.c | 15 +++++++++++++++
> drivers/gpu/drm/i915/dvo_sil164.c | 16 ++++++++++++++++
> drivers/gpu/drm/i915/dvo_tfp410.c | 14 ++++++++++++++
> drivers/gpu/drm/i915/intel_dvo.c | 27 +++++++++++++++++++++++++++
> 8 files changed, 119 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/dvo.h b/drivers/gpu/drm/i915/dvo.h
> index 0fa839e..74b5efc 100644
> --- a/drivers/gpu/drm/i915/dvo.h
> +++ b/drivers/gpu/drm/i915/dvo.h
> @@ -114,6 +114,12 @@ struct intel_dvo_dev_ops {
> */
> enum drm_connector_status (*detect)(struct intel_dvo_device *dvo);
>
> + /*
> + * Probe the current hw status, returning true if the connected output
> + * is active.
> + */
> + bool (*get_hw_state)(struct intel_dvo_device *dev);
> +
> /**
> * Query the device for the modes it provides.
> *
> diff --git a/drivers/gpu/drm/i915/dvo_ch7017.c b/drivers/gpu/drm/i915/dvo_ch7017.c
> index 71e7650..86b27d1 100644
> --- a/drivers/gpu/drm/i915/dvo_ch7017.c
> +++ b/drivers/gpu/drm/i915/dvo_ch7017.c
> @@ -359,6 +359,18 @@ static void ch7017_dpms(struct intel_dvo_device *dvo, bool enable)
> msleep(20);
> }
>
> +static bool ch7017_get_hw_state(struct intel_dvo_device *dvo)
> +{
> + uint8_t val;
> +
> + ch7017_read(dvo, CH7017_LVDS_POWER_DOWN, &val);
> +
> + if (val & CH7017_LVDS_POWER_DOWN_EN)
> + return false;
> + else
> + return true;
> +}
> +
> static void ch7017_dump_regs(struct intel_dvo_device *dvo)
> {
> uint8_t val;
> @@ -396,6 +408,7 @@ struct intel_dvo_dev_ops ch7017_ops = {
> .mode_valid = ch7017_mode_valid,
> .mode_set = ch7017_mode_set,
> .dpms = ch7017_dpms,
> + .get_hw_state = ch7017_get_hw_state,
> .dump_regs = ch7017_dump_regs,
> .destroy = ch7017_destroy,
> };
> diff --git a/drivers/gpu/drm/i915/dvo_ch7xxx.c b/drivers/gpu/drm/i915/dvo_ch7xxx.c
> index c1dea5b..38f3a6c 100644
> --- a/drivers/gpu/drm/i915/dvo_ch7xxx.c
> +++ b/drivers/gpu/drm/i915/dvo_ch7xxx.c
> @@ -297,6 +297,18 @@ static void ch7xxx_dpms(struct intel_dvo_device *dvo, bool enable)
> ch7xxx_writeb(dvo, CH7xxx_PM, CH7xxx_PM_FPD);
> }
>
> +static bool ch7xxx_get_hw_state(struct intel_dvo_device *dvo)
> +{
> + u8 val;
> +
> + ch7xxx_readb(dvo, CH7xxx_PM, &val);
> +
> + if (val & CH7xxx_PM_FPD)
> + return false;
> + else
> + return true;
> +}
> +
> static void ch7xxx_dump_regs(struct intel_dvo_device *dvo)
> {
> int i;
> @@ -326,6 +338,7 @@ struct intel_dvo_dev_ops ch7xxx_ops = {
> .mode_valid = ch7xxx_mode_valid,
> .mode_set = ch7xxx_mode_set,
> .dpms = ch7xxx_dpms,
> + .get_hw_state = ch7xxx_get_hw_state,
> .dump_regs = ch7xxx_dump_regs,
> .destroy = ch7xxx_destroy,
> };
> diff --git a/drivers/gpu/drm/i915/dvo_ivch.c b/drivers/gpu/drm/i915/dvo_ivch.c
> index fa8ff6b..baaf65b 100644
> --- a/drivers/gpu/drm/i915/dvo_ivch.c
> +++ b/drivers/gpu/drm/i915/dvo_ivch.c
> @@ -323,6 +323,20 @@ static void ivch_dpms(struct intel_dvo_device *dvo, bool enable)
> udelay(16 * 1000);
> }
>
> +static bool ivch_get_hw_state(struct intel_dvo_device *dvo)
> +{
> + uint16_t vr01;
> +
> + /* Set the new power state of the panel. */
> + if (!ivch_read(dvo, VR01, &vr01))
> + return false;
> +
> + if (vr01 & VR01_LCD_ENABLE)
> + return true;
> + else
> + return false;
> +}
> +
> static void ivch_mode_set(struct intel_dvo_device *dvo,
> struct drm_display_mode *mode,
> struct drm_display_mode *adjusted_mode)
> @@ -413,6 +427,7 @@ static void ivch_destroy(struct intel_dvo_device *dvo)
> struct intel_dvo_dev_ops ivch_ops = {
> .init = ivch_init,
> .dpms = ivch_dpms,
> + .get_hw_state = ivch_get_hw_state,
> .mode_valid = ivch_mode_valid,
> .mode_set = ivch_mode_set,
> .detect = ivch_detect,
> diff --git a/drivers/gpu/drm/i915/dvo_ns2501.c b/drivers/gpu/drm/i915/dvo_ns2501.c
> index c4d9f2f..c4a255b 100644
> --- a/drivers/gpu/drm/i915/dvo_ns2501.c
> +++ b/drivers/gpu/drm/i915/dvo_ns2501.c
> @@ -493,6 +493,20 @@ static void ns2501_mode_set(struct intel_dvo_device *dvo,
> }
>
> /* set the NS2501 power state */
> +static bool ns2501_get_hw_state(struct intel_dvo_device *dvo)
> +{
> + unsigned char ch;
> +
> + if (!ns2501_readb(dvo, NS2501_REG8, &ch))
> + return false;
> +
> + if (ch & NS2501_8_PD)
> + return true;
> + else
> + return false;
> +}
> +
> +/* set the NS2501 power state */
> static void ns2501_dpms(struct intel_dvo_device *dvo, bool enable)
> {
> bool ok;
> @@ -568,6 +582,7 @@ struct intel_dvo_dev_ops ns2501_ops = {
> .mode_valid = ns2501_mode_valid,
> .mode_set = ns2501_mode_set,
> .dpms = ns2501_dpms,
> + .get_hw_state = ns2501_get_hw_state,
> .dump_regs = ns2501_dump_regs,
> .destroy = ns2501_destroy,
> };
> diff --git a/drivers/gpu/drm/i915/dvo_sil164.c b/drivers/gpu/drm/i915/dvo_sil164.c
> index cc24c1c..4debd32 100644
> --- a/drivers/gpu/drm/i915/dvo_sil164.c
> +++ b/drivers/gpu/drm/i915/dvo_sil164.c
> @@ -226,6 +226,21 @@ static void sil164_dpms(struct intel_dvo_device *dvo, bool enable)
> return;
> }
>
> +static bool sil164_get_hw_state(struct intel_dvo_device *dvo)
> +{
> + int ret;
> + unsigned char ch;
> +
> + ret = sil164_readb(dvo, SIL164_REG8, &ch);
> + if (ret == false)
> + return false;
> +
> + if (ch & SIL164_8_PD)
> + return true;
> + else
> + return false;
> +}
> +
> static void sil164_dump_regs(struct intel_dvo_device *dvo)
> {
> uint8_t val;
> @@ -258,6 +273,7 @@ struct intel_dvo_dev_ops sil164_ops = {
> .mode_valid = sil164_mode_valid,
> .mode_set = sil164_mode_set,
> .dpms = sil164_dpms,
> + .get_hw_state = sil164_get_hw_state,
> .dump_regs = sil164_dump_regs,
> .destroy = sil164_destroy,
> };
> diff --git a/drivers/gpu/drm/i915/dvo_tfp410.c b/drivers/gpu/drm/i915/dvo_tfp410.c
> index 097b3e8..e17f1b0 100644
> --- a/drivers/gpu/drm/i915/dvo_tfp410.c
> +++ b/drivers/gpu/drm/i915/dvo_tfp410.c
> @@ -249,6 +249,19 @@ static void tfp410_dpms(struct intel_dvo_device *dvo, bool enable)
> tfp410_writeb(dvo, TFP410_CTL_1, ctl1);
> }
>
> +static bool tfp410_get_hw_state(struct intel_dvo_device *dvo)
> +{
> + uint8_t ctl1;
> +
> + if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
> + return false;
> +
> + if (ctl1 & TFP410_CTL_1_PD)
> + return true;
> + else
> + return false;
> +}
> +
> static void tfp410_dump_regs(struct intel_dvo_device *dvo)
> {
> uint8_t val, val2;
> @@ -299,6 +312,7 @@ struct intel_dvo_dev_ops tfp410_ops = {
> .mode_valid = tfp410_mode_valid,
> .mode_set = tfp410_mode_set,
> .dpms = tfp410_dpms,
> + .get_hw_state = tfp410_get_hw_state,
> .dump_regs = tfp410_dump_regs,
> .destroy = tfp410_destroy,
> };
> diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
> index 84c0867..e9397b7 100644
> --- a/drivers/gpu/drm/i915/intel_dvo.c
> +++ b/drivers/gpu/drm/i915/intel_dvo.c
> @@ -105,6 +105,31 @@ static struct intel_dvo *intel_attached_dvo(struct drm_connector *connector)
> struct intel_dvo, base);
> }
>
> +static bool intel_dvo_connector_get_hw_state(struct intel_connector *connector)
> +{
> + struct intel_dvo *intel_dvo = intel_attached_dvo(&connector->base);
> +
> + return intel_dvo->dev.dev_ops->get_hw_state(&intel_dvo->dev);
> +}
> +
> +static bool intel_dvo_get_hw_state(struct intel_encoder *encoder,
> + enum pipe *pipe)
> +{
> + struct drm_device *dev = encoder->base.dev;
> + struct drm_i915_private *dev_priv = dev->dev_private;
> + struct intel_dvo *intel_dvo = enc_to_intel_dvo(&encoder->base);
> + u32 tmp;
> +
> + tmp = I915_READ(intel_dvo->dev.dvo_reg);
> +
> + if (!(tmp & DVO_ENABLE))
> + return false;
> +
> + *pipe = PORT_TO_PIPE(tmp);
> +
> + return true;
> +}
> +
> static void intel_disable_dvo(struct intel_encoder *encoder)
> {
> struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
> @@ -414,6 +439,8 @@ void intel_dvo_init(struct drm_device *dev)
>
> intel_encoder->disable = intel_disable_dvo;
> intel_encoder->enable = intel_enable_dvo;
> + intel_encoder->get_hw_state = intel_dvo_get_hw_state;
> + intel_connector->get_hw_state = intel_dvo_connector_get_hw_state;
>
> /* Now, try to find a controller */
> for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
Uhh yes.
Acked-by: Jesse Barnes <jbarnes at virtuousgeek.org>
--
Jesse Barnes, Intel Open Source Technology Center
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