drm/msm/hdmi: add hdmi hdcp support (V3)
Add HDMI HDCP support including HDCP PartI/II/III authentication.
V1: Initial Change
V2: Address Bjorn&Rob's comments
Refactor the authentication process to use single work instead
of multiple work for different authentication stages.
V3: Update to align with qcom SCM api.
Signed-off-by: Jilai Wang <jilaiw@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index 8145362..049723d 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -22,7 +22,9 @@
void hdmi_set_mode(struct hdmi *hdmi, bool power_on)
{
uint32_t ctrl = 0;
+ unsigned long flags;
+ spin_lock_irqsave(&hdmi->reg_lock, flags);
if (power_on) {
ctrl |= HDMI_CTRL_ENABLE;
if (!hdmi->hdmi_mode) {
@@ -37,6 +39,7 @@
}
hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
+ spin_unlock_irqrestore(&hdmi->reg_lock, flags);
DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
power_on ? "Enable" : "Disable", ctrl);
}
@@ -51,6 +54,10 @@
/* Process DDC: */
hdmi_i2c_irq(hdmi->i2c);
+ /* Process HDCP: */
+ if (hdmi->hdcp_ctrl)
+ hdmi_hdcp_irq(hdmi->hdcp_ctrl);
+
/* TODO audio.. */
return IRQ_HANDLED;
@@ -60,6 +67,15 @@
{
struct hdmi_phy *phy = hdmi->phy;
+ /*
+ * at this point, hpd has been disabled,
+ * after flush workq, it's safe to deinit hdcp
+ */
+ if (hdmi->workq) {
+ flush_workqueue(hdmi->workq);
+ destroy_workqueue(hdmi->workq);
+ }
+ hdmi_hdcp_destroy(hdmi);
if (phy)
phy->funcs->destroy(phy);
@@ -77,6 +93,7 @@
{
struct hdmi_platform_config *config = pdev->dev.platform_data;
struct hdmi *hdmi = NULL;
+ struct resource *res;
int i, ret;
hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
@@ -87,6 +104,7 @@
hdmi->pdev = pdev;
hdmi->config = config;
+ spin_lock_init(&hdmi->reg_lock);
/* not sure about which phy maps to which msm.. probably I miss some */
if (config->phy_init)
@@ -107,6 +125,18 @@
goto fail;
}
+ /* HDCP needs physical address of hdmi register */
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ config->mmio_name);
+ hdmi->mmio_phy_addr = res->start;
+
+ hdmi->qfprom_mmio = msm_ioremap(pdev,
+ config->qfprom_mmio_name, "HDMI_QFPROM");
+ if (IS_ERR(hdmi->qfprom_mmio)) {
+ dev_info(&pdev->dev, "can't find qfprom resource\n");
+ hdmi->qfprom_mmio = NULL;
+ }
+
hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) *
config->hpd_reg_cnt, GFP_KERNEL);
if (!hdmi->hpd_regs) {
@@ -189,6 +219,8 @@
hdmi->pwr_clks[i] = clk;
}
+ hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
+
hdmi->i2c = hdmi_i2c_init(hdmi);
if (IS_ERR(hdmi->i2c)) {
ret = PTR_ERR(hdmi->i2c);
@@ -197,6 +229,12 @@
goto fail;
}
+ hdmi->hdcp_ctrl = hdmi_hdcp_init(hdmi);
+ if (IS_ERR(hdmi->hdcp_ctrl)) {
+ dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
+ hdmi->hdcp_ctrl = NULL;
+ }
+
return hdmi;
fail:
@@ -376,6 +414,7 @@
}
hdmi_cfg->mmio_name = "core_physical";
+ hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
hdmi_cfg->ddc_clk_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-clk");
hdmi_cfg->ddc_data_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-data");
hdmi_cfg->hpd_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-hpd");
@@ -391,7 +430,6 @@
if (cpu_is_apq8064()) {
static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
config.phy_init = hdmi_phy_8960_init;
- config.mmio_name = "hdmi_msm_hdmi_addr";
config.hpd_reg_names = hpd_reg_names;
config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
config.hpd_clk_names = hpd_clk_names;
@@ -404,7 +442,6 @@
} else if (cpu_is_msm8960() || cpu_is_msm8960ab()) {
static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
config.phy_init = hdmi_phy_8960_init;
- config.mmio_name = "hdmi_msm_hdmi_addr";
config.hpd_reg_names = hpd_reg_names;
config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
config.hpd_clk_names = hpd_clk_names;
@@ -419,7 +456,6 @@
"8901_hdmi_mvs", "8901_mpp0"
};
config.phy_init = hdmi_phy_8x60_init;
- config.mmio_name = "hdmi_msm_hdmi_addr";
config.hpd_reg_names = hpd_reg_names;
config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
config.hpd_clk_names = hpd_clk_names;
@@ -430,6 +466,9 @@
config.mux_en_gpio = -1;
config.mux_sel_gpio = -1;
}
+ config.mmio_name = "hdmi_msm_hdmi_addr";
+ config.qfprom_mmio_name = "hdmi_msm_qfprom_addr";
+
hdmi_cfg = &config;
#endif
dev->platform_data = hdmi_cfg;