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drm: bridge: dw-hdmi: Extract PHY interrupt setup to a function

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In preparation for adding PHY operations to handle RX SENSE and HPD,
group all the PHY interrupt setup code in a single location and extract
it to a separate function.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
[narmstrong: renamed dw_hdmi_fb_registered to dw_hdmi_setup_i2c]
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Laurent Pinchart 2017-04-04 14:31:56 +02:00 committed by Neil Armstrong
parent 9eb8902e27
commit a23d6265f0
1 changed files with 23 additions and 28 deletions
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51
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
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@ -1558,8 +1558,7 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
return 0;
}
/* Wait until we are registered to enable interrupts */
static int dw_hdmi_fb_registered(struct dw_hdmi *hdmi)
static void dw_hdmi_setup_i2c(struct dw_hdmi *hdmi)
{
hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL,
HDMI_PHY_I2CM_INT_ADDR);
@ -1567,15 +1566,6 @@ static int dw_hdmi_fb_registered(struct dw_hdmi *hdmi)
hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL |
HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL,
HDMI_PHY_I2CM_CTLINT_ADDR);
/* enable cable hot plug irq */
hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
/* Clear Hotplug interrupts */
hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
HDMI_IH_PHY_STAT0);
return 0;
}
static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi)
@ -1693,6 +1683,26 @@ static void dw_hdmi_update_phy_mask(struct dw_hdmi *hdmi)
hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
}
static void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi)
{
/*
* Configure the PHY RX SENSE and HPD interrupts polarities and clear
* any pending interrupt.
*/
hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0);
hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
HDMI_IH_PHY_STAT0);
/* Enable cable hot plug irq. */
hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
/* Clear and unmute interrupts. */
hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
HDMI_IH_PHY_STAT0);
hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
HDMI_IH_MUTE_PHY_STAT0);
}
static enum drm_connector_status
dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
{
@ -2204,29 +2214,14 @@ __dw_hdmi_probe(struct platform_device *pdev,
hdmi->ddc = NULL;
}
/*
* Configure registers related to HDMI interrupt
* generation before registering IRQ.
*/
hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0);
/* Clear Hotplug interrupts */
hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
HDMI_IH_PHY_STAT0);
hdmi->bridge.driver_private = hdmi;
hdmi->bridge.funcs = &dw_hdmi_bridge_funcs;
#ifdef CONFIG_OF
hdmi->bridge.of_node = pdev->dev.of_node;
#endif
ret = dw_hdmi_fb_registered(hdmi);
if (ret)
goto err_iahb;
/* Unmute interrupts */
hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
HDMI_IH_MUTE_PHY_STAT0);
dw_hdmi_setup_i2c(hdmi);
dw_hdmi_phy_setup_hpd(hdmi);
memset(&pdevinfo, 0, sizeof(pdevinfo));
pdevinfo.parent = dev;