mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-09-19 22:08:32 +00:00
127 lines
3.6 KiB
Diff
127 lines
3.6 KiB
Diff
diff -ruN a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
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--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c 2016-03-20 07:16:03.000000000 -0600
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+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c 2016-03-27 02:38:59.095101603 -0600
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@@ -67,7 +67,6 @@
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u8 msg_len;
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int tx_answer;
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u16 latest_cec_stat;
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- u8 link_status;
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spinlock_t irq_lock;
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struct delayed_work hdmi_cec_work;
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struct mutex lock;
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@@ -83,8 +82,6 @@
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static LIST_HEAD(head);
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-static int hdmi_cec_ready = 0;
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-static int hdmi_cec_started;
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static int hdmi_cec_major;
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static struct class *hdmi_cec_class;
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static struct hdmi_cec_priv hdmi_cec_data;
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@@ -98,7 +95,6 @@
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struct hdmi_cec_priv *hdmi_cec = data;
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u16 cec_stat = 0;
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unsigned long flags;
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- u8 phy_stat0;
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spin_lock_irqsave(&hdmi_cec->irq_lock, flags);
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@@ -106,15 +102,7 @@
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cec_stat = hdmi_readb(HDMI_IH_CEC_STAT0);
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hdmi_writeb(cec_stat, HDMI_IH_CEC_STAT0);
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- phy_stat0 = hdmi_readb(HDMI_PHY_STAT0) & 0x02;
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- if (hdmi_cec->link_status ^ phy_stat0) {
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- /* HPD value changed */
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- hdmi_cec->link_status = phy_stat0;
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- if (hdmi_cec->link_status)
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- cec_stat |= 0x80; /* Connected */
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- else
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- cec_stat |= 0x100; /* Disconnected */
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- }
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+
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if ((cec_stat & (HDMI_IH_CEC_STAT0_ERROR_INIT | \
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HDMI_IH_CEC_STAT0_NACK | HDMI_IH_CEC_STAT0_EOM | \
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HDMI_IH_CEC_STAT0_DONE | 0x180)) == 0) {
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@@ -314,7 +302,7 @@
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mutex_unlock(&hdmi_cec_data.lock);
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return -EACCES;
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}
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- /* Ensure that there is only one writer who is the only listener of tx_cec_queue */
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+ /* Ensure that there is only one writer who is the unique listener of tx_cec_queue */
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if (hdmi_cec_data.tx_answer != CEC_TX_AVAIL) {
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mutex_unlock(&hdmi_cec_data.lock);
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return -EBUSY;
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@@ -362,9 +350,6 @@
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{
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u8 val;
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- if (!hdmi_cec_ready || hdmi_cec_started)
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- return;
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-
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val = hdmi_readb(HDMI_MC_CLKDIS);
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val &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
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hdmi_writeb(val, HDMI_MC_CLKDIS);
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@@ -376,12 +361,7 @@
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val = HDMI_IH_CEC_STAT0_WAKEUP | HDMI_IH_CEC_STAT0_ERROR_FOLL | HDMI_IH_CEC_STAT0_ARB_LOST;
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hdmi_writeb(val, HDMI_CEC_MASK);
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hdmi_writeb(val, HDMI_IH_MUTE_CEC_STAT0);
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- hdmi_cec_data.link_status = hdmi_readb(HDMI_PHY_STAT0) & 0x02;
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- mutex_lock(&hdmi_cec_data.lock);
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hdmi_cec_data.cec_state = true;
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- mutex_unlock(&hdmi_cec_data.lock);
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-
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- hdmi_cec_started = 1;
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}
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EXPORT_SYMBOL(hdmi_cec_start_device);
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@@ -389,9 +369,6 @@
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{
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u8 val;
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- if (!hdmi_cec_ready || !hdmi_cec_started)
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- return;
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-
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hdmi_writeb(0x10, HDMI_CEC_CTRL);
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val = HDMI_IH_CEC_STAT0_WAKEUP | HDMI_IH_CEC_STAT0_ERROR_FOLL | HDMI_IH_CEC_STAT0_ERROR_INIT | HDMI_IH_CEC_STAT0_ARB_LOST | \
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HDMI_IH_CEC_STAT0_NACK | HDMI_IH_CEC_STAT0_EOM | HDMI_IH_CEC_STAT0_DONE;
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@@ -401,11 +378,7 @@
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val = hdmi_readb(HDMI_MC_CLKDIS);
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val |= HDMI_MC_CLKDIS_CECCLK_DISABLE;
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hdmi_writeb(val, HDMI_MC_CLKDIS);
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- mutex_lock(&hdmi_cec_data.lock);
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hdmi_cec_data.cec_state = false;
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- mutex_unlock(&hdmi_cec_data.lock);
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-
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- hdmi_cec_started = 0;
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}
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EXPORT_SYMBOL(hdmi_cec_stop_device);
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@@ -480,11 +453,18 @@
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*/
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static int hdmi_cec_release(struct inode *inode, struct file *filp)
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{
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+ struct hdmi_cec_event *event, *tmp_event;
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mutex_lock(&hdmi_cec_data.lock);
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if (open_count) {
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open_count = 0;
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hdmi_cec_data.cec_state = false;
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hdmi_cec_data.Logical_address = 15;
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+
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+ /* Flush eventual events which have not been read by user space */
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+ list_for_each_entry_safe(event, tmp_event, &head, list) {
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+ list_del(&event->list);
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+ vfree(event);
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+ }
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}
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mutex_unlock(&hdmi_cec_data.lock);
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@@ -579,7 +559,6 @@
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INIT_DELAYED_WORK(&hdmi_cec_data.hdmi_cec_work, mxc_hdmi_cec_worker);
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dev_info(&pdev->dev, "HDMI CEC initialized\n");
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- hdmi_cec_ready = 1;
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goto out;
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err_out_class:
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