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drm/i915: Turn get_aux_clock_divider() into per-platform vfuncs 

A tiny clean-up to allow better code separation between platforms.

v2: Fix comment placement (put in in i9xx_get_aux_clock_divider()) and
    nuke the outdated PCH eDP comment (Jani Nikula)

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2014-01-21 13:35:39 +00:00 committed by Daniel Vetter
parent 0f540c3a7c
commit ec5b01dd8f
2 changed files with 55 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

76
drivers/gpu/drm/i915/intel_dp.c
View File

@ -358,31 +358,46 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq)
return status;
}
static uint32_t get_aux_clock_divider(struct intel_dp *intel_dp,
int index)
static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
/*
* The clock divider is based off the hrawclk, and would like to run at
* 2MHz. So, take the hrawclk value and divide by 2 and use that
*/
return index ? 0 : intel_hrawclk(dev) / 2;
}
static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
if (index)
return 0;
if (intel_dig_port->port == PORT_A) {
if (IS_GEN6(dev) || IS_GEN7(dev))
return 200; /* SNB & IVB eDP input clock at 400Mhz */
else
return 225; /* eDP input clock at 450Mhz */
} else {
return DIV_ROUND_UP(intel_pch_rawclk(dev), 2);
}
}
static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
/* The clock divider is based off the hrawclk,
* and would like to run at 2MHz. So, take the
* hrawclk value and divide by 2 and use that
*
* Note that PCH attached eDP panels should use a 125MHz input
* clock divider.
*/
if (IS_VALLEYVIEW(dev)) {
return index ? 0 : 100;
} else if (intel_dig_port->port == PORT_A) {
if (intel_dig_port->port == PORT_A) {
if (index)
return 0;
if (HAS_DDI(dev))
return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000);
else if (IS_GEN6(dev) || IS_GEN7(dev))
return 200; /* SNB & IVB eDP input clock at 400Mhz */
else
return 225; /* eDP input clock at 450Mhz */
return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000);
} else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
/* Workaround for non-ULT HSW */
switch (index) {
@ -390,13 +405,16 @@ static uint32_t get_aux_clock_divider(struct intel_dp *intel_dp,
case 1: return 72;
default: return 0;
}
} else if (HAS_PCH_SPLIT(dev)) {
} else {
return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2);
} else {
return index ? 0 :intel_hrawclk(dev) / 2;
}
}
static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
{
return index ? 0 : 100;
}
static int
intel_dp_aux_ch(struct intel_dp *intel_dp,
uint8_t *send, int send_bytes,
@ -455,7 +473,7 @@ intel_dp_aux_ch(struct intel_dp *intel_dp,
goto out;
}
while ((aux_clock_divider = get_aux_clock_divider(intel_dp, clock++))) {
while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) {
/* Must try at least 3 times according to DP spec */
for (try = 0; try < 5; try++) {
/* Load the send data into the aux channel data registers */
@ -1619,10 +1637,12 @@ static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t aux_clock_divider = get_aux_clock_divider(intel_dp, 0);
uint32_t aux_clock_divider;
int precharge = 0x3;
int msg_size = 5; /* Header(4) + Message(1) */
aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0);
/* Enable PSR in sink */
if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT)
intel_dp_aux_native_write_1(intel_dp, DP_PSR_EN_CFG,
@ -3679,6 +3699,16 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
const char *name = NULL;
int type, error;
/* intel_dp vfuncs */
if (IS_VALLEYVIEW(dev))
intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider;
else if (IS_HASWELL(dev) || IS_BROADWELL(dev))
intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider;
else if (HAS_PCH_SPLIT(dev))
intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider;
else
intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider;
/* Preserve the current hw state. */
intel_dp->DP = I915_READ(intel_dp->output_reg);
intel_dp->attached_connector = intel_connector;

2
drivers/gpu/drm/i915/intel_drv.h
View File

@ -493,6 +493,8 @@ struct intel_dp {
bool psr_setup_done;
bool use_tps3;
struct intel_connector *attached_connector;
uint32_t (*get_aux_clock_divider)(struct intel_dp *dp, int index);
};
struct intel_digital_port {