mirror of
https://github.com/LibreELEC/LibreELEC.tv.git
synced 2025-07-31 14:37:59 +00:00
linux-cuboxi: update to linux-cuboxi-27bb585
Signed-off-by: Stephan Raue <stephan@openelec.tv>
This commit is contained in:
Stephan Raue
parent
12fda0ebcb
commit
42225b4a83
@ -19,7 +19,7 @@
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PKG_NAME="linux"
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case "$LINUX" in
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imx6)
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PKG_VERSION="cuboxi-592b2d9"
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PKG_VERSION="cuboxi-27bb585"
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PKG_URL="$DISTRO_SRC/$PKG_NAME-$PKG_VERSION.tar.xz"
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;;
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*)
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@ -1,731 +0,0 @@
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From 74fc2e85c080b0ddc2a4b2565eda97c55300303d Mon Sep 17 00:00:00 2001
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From: wolfgar <stephan.rafin@laposte.net>
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Date: Sat, 26 Apr 2014 16:50:32 +0200
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Subject: [PATCH] Merge all CEC driver changes to 3.10 This commit pushes all
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changes I did in the 3.0.35 kernel to improve/fix its behavior with libcec
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port for imx6
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It also fixes CEC clock handling in case of FB mode change event
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and of HDMI cable disconnection
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---
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drivers/mxc/hdmi-cec/mxc_hdmi-cec.c | 327 +++++++++++++++---------------------
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drivers/video/mxc/mxc_hdmi.c | 14 +-
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2 files changed, 147 insertions(+), 194 deletions(-)
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diff --git a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
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index d0113ee..3a8aff4 100644
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--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
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+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
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@@ -55,6 +55,8 @@
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#define MESSAGE_TYPE_CONNECTED 4
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#define MESSAGE_TYPE_SEND_SUCCESS 5
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+#define CEC_TX_INPROGRESS -1
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+#define CEC_TX_AVAIL 0
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struct hdmi_cec_priv {
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int receive_error;
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@@ -63,7 +65,9 @@ struct hdmi_cec_priv {
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bool cec_state;
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u8 last_msg[MAX_MESSAGE_LEN];
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u8 msg_len;
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- u8 latest_cec_stat;
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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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@@ -76,6 +80,7 @@ struct hdmi_cec_event {
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struct list_head list;
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};
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+
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static LIST_HEAD(head);
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static int hdmi_cec_major;
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@@ -84,11 +89,14 @@ static struct hdmi_cec_priv hdmi_cec_data;
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static u8 open_count;
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static wait_queue_head_t hdmi_cec_queue;
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+static wait_queue_head_t tx_cec_queue;
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+
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static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
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{
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struct hdmi_cec_priv *hdmi_cec = data;
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- u8 cec_stat = 0;
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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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@@ -96,16 +104,24 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
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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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-
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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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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)) == 0) {
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+ HDMI_IH_CEC_STAT0_DONE | 0x180)) == 0) {
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spin_unlock_irqrestore(&hdmi_cec->irq_lock, flags);
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return IRQ_HANDLED;
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}
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-
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pr_debug("HDMI CEC interrupt received\n");
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- hdmi_cec->latest_cec_stat = cec_stat;
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+ /* FIXME : there is a race with latest_cec_stat */
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+ hdmi_cec->latest_cec_stat = cec_stat ;
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schedule_delayed_work(&(hdmi_cec->hdmi_cec_work), msecs_to_jiffies(20));
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@@ -118,115 +134,70 @@ void mxc_hdmi_cec_handle(u16 cec_stat)
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{
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u8 val = 0, i = 0;
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struct hdmi_cec_event *event = NULL;
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-
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- /* The current transmission is successful (for initiator only). */
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+ /*The current transmission is successful (for initiator only).*/
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if (!open_count)
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return;
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if (cec_stat & HDMI_IH_CEC_STAT0_DONE) {
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-
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- event = vmalloc(sizeof(struct hdmi_cec_event));
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- if (NULL == event) {
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- pr_err("%s: Not enough memory!\n", __func__);
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- return;
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- }
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-
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- memset(event, 0, sizeof(struct hdmi_cec_event));
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- event->event_type = MESSAGE_TYPE_SEND_SUCCESS;
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-
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- mutex_lock(&hdmi_cec_data.lock);
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- list_add_tail(&event->list, &head);
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- mutex_unlock(&hdmi_cec_data.lock);
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-
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- wake_up(&hdmi_cec_queue);
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+ hdmi_cec_data.tx_answer = cec_stat;
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+ wake_up(&tx_cec_queue);
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}
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-
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- /* EOM is detected so that the received data is ready
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- * in the receiver data buffer
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- */
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+ /*EOM is detected so that the received data is ready in the receiver data buffer*/
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if (cec_stat & HDMI_IH_CEC_STAT0_EOM) {
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-
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hdmi_writeb(0x02, HDMI_IH_CEC_STAT0);
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-
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event = vmalloc(sizeof(struct hdmi_cec_event));
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if (NULL == event) {
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pr_err("%s: Not enough memory!\n", __func__);
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return;
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}
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memset(event, 0, sizeof(struct hdmi_cec_event));
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-
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event->msg_len = hdmi_readb(HDMI_CEC_RX_CNT);
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if (!event->msg_len) {
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pr_err("%s: Invalid CEC message length!\n", __func__);
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return;
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}
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event->event_type = MESSAGE_TYPE_RECEIVE_SUCCESS;
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-
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for (i = 0; i < event->msg_len; i++)
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event->msg[i] = hdmi_readb(HDMI_CEC_RX_DATA0+i);
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hdmi_writeb(0x0, HDMI_CEC_LOCK);
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-
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mutex_lock(&hdmi_cec_data.lock);
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list_add_tail(&event->list, &head);
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mutex_unlock(&hdmi_cec_data.lock);
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-
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wake_up(&hdmi_cec_queue);
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}
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-
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- /* An error is detected on cec line (for initiator only). */
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+ /*An error is detected on cec line (for initiator only). */
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if (cec_stat & HDMI_IH_CEC_STAT0_ERROR_INIT) {
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-
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mutex_lock(&hdmi_cec_data.lock);
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hdmi_cec_data.send_error++;
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- if (hdmi_cec_data.send_error > 5) {
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- pr_err("%s:Re-transmission is attempted more than 5 times!\n",
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- __func__);
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+ if (hdmi_cec_data.send_error > 2) {
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+ pr_err("%s:Re-transmission is attempted more than 2 times!\n", __func__);
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hdmi_cec_data.send_error = 0;
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mutex_unlock(&hdmi_cec_data.lock);
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+ hdmi_cec_data.tx_answer = cec_stat;
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+ wake_up(&tx_cec_queue);
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return;
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}
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-
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- for (i = 0; i < hdmi_cec_data.msg_len; i++) {
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- hdmi_writeb(hdmi_cec_data.last_msg[i],
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- HDMI_CEC_TX_DATA0 + i);
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- }
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+ for (i = 0; i < hdmi_cec_data.msg_len; i++)
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+ hdmi_writeb(hdmi_cec_data.last_msg[i], HDMI_CEC_TX_DATA0+i);
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hdmi_writeb(hdmi_cec_data.msg_len, HDMI_CEC_TX_CNT);
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-
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val = hdmi_readb(HDMI_CEC_CTRL);
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val |= 0x01;
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hdmi_writeb(val, HDMI_CEC_CTRL);
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mutex_unlock(&hdmi_cec_data.lock);
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}
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-
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- /* A frame is not acknowledged in a directly addressed message.
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- * Or a frame is negatively acknowledged in
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- * a broadcast message (for initiator only).
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- */
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+ /*A frame is not acknowledged in a directly addressed message. Or a frame is negatively acknowledged in
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+ a broadcast message (for initiator only).*/
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if (cec_stat & HDMI_IH_CEC_STAT0_NACK) {
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- event = vmalloc(sizeof(struct hdmi_cec_event));
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- if (NULL == event) {
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- pr_err("%s: Not enough memory\n", __func__);
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- return;
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- }
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- memset(event, 0, sizeof(struct hdmi_cec_event));
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- event->event_type = MESSAGE_TYPE_NOACK;
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-
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- mutex_lock(&hdmi_cec_data.lock);
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- list_add_tail(&event->list, &head);
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- mutex_unlock(&hdmi_cec_data.lock);
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-
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- wake_up(&hdmi_cec_queue);
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+ hdmi_cec_data.tx_answer = cec_stat;
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+ wake_up(&tx_cec_queue);
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}
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-
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- /* An error is notified by a follower.
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- * Abnormal logic data bit error (for follower).
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- */
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+ /*An error is notified by a follower. Abnormal logic data bit error (for follower).*/
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if (cec_stat & HDMI_IH_CEC_STAT0_ERROR_FOLL) {
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hdmi_cec_data.receive_error++;
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}
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-
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- /* HDMI cable connected */
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+ /*HDMI cable connected*/
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if (cec_stat & 0x80) {
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+ pr_info("HDMI link connected\n");
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event = vmalloc(sizeof(struct hdmi_cec_event));
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if (NULL == event) {
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pr_err("%s: Not enough memory\n", __func__);
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@@ -234,16 +205,14 @@ void mxc_hdmi_cec_handle(u16 cec_stat)
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}
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memset(event, 0, sizeof(struct hdmi_cec_event));
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event->event_type = MESSAGE_TYPE_CONNECTED;
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-
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mutex_lock(&hdmi_cec_data.lock);
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list_add_tail(&event->list, &head);
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mutex_unlock(&hdmi_cec_data.lock);
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-
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wake_up(&hdmi_cec_queue);
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}
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-
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- /* HDMI cable disconnected */
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+ /*HDMI cable disconnected*/
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if (cec_stat & 0x100) {
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+ pr_info("HDMI link disconnected\n");
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event = vmalloc(sizeof(struct hdmi_cec_event));
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if (NULL == event) {
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pr_err("%s: Not enough memory!\n", __func__);
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@@ -251,30 +220,24 @@ void mxc_hdmi_cec_handle(u16 cec_stat)
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}
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memset(event, 0, sizeof(struct hdmi_cec_event));
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event->event_type = MESSAGE_TYPE_DISCONNECTED;
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-
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mutex_lock(&hdmi_cec_data.lock);
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list_add_tail(&event->list, &head);
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mutex_unlock(&hdmi_cec_data.lock);
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-
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wake_up(&hdmi_cec_queue);
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}
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-
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return;
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}
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EXPORT_SYMBOL(mxc_hdmi_cec_handle);
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-
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static void mxc_hdmi_cec_worker(struct work_struct *work)
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{
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u8 val;
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-
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mxc_hdmi_cec_handle(hdmi_cec_data.latest_cec_stat);
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- val = HDMI_IH_CEC_STAT0_WAKEUP | HDMI_IH_CEC_STAT0_ERROR_FOLL |
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- HDMI_IH_CEC_STAT0_ARB_LOST;
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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_IH_MUTE_CEC_STAT0);
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}
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/*!
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- * @brief open function for vpu file operation
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+ * @brief open function for cec file operation
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*
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* @return 0 on success or negative error code on error
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*/
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@@ -285,13 +248,11 @@ static int hdmi_cec_open(struct inode *inode, struct file *filp)
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mutex_unlock(&hdmi_cec_data.lock);
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return -EBUSY;
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}
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-
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open_count = 1;
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filp->private_data = (void *)(&hdmi_cec_data);
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hdmi_cec_data.Logical_address = 15;
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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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return 0;
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}
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@@ -299,36 +260,40 @@ static ssize_t hdmi_cec_read(struct file *file, char __user *buf, size_t count,
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loff_t *ppos)
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{
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struct hdmi_cec_event *event = NULL;
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-
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pr_debug("function : %s\n", __func__);
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+
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if (!open_count)
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return -ENODEV;
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-
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mutex_lock(&hdmi_cec_data.lock);
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if (false == hdmi_cec_data.cec_state) {
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mutex_unlock(&hdmi_cec_data.lock);
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return -EACCES;
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}
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- mutex_unlock(&hdmi_cec_data.lock);
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- /* delete from list */
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- mutex_lock(&hdmi_cec_data.lock);
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if (list_empty(&head)) {
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- mutex_unlock(&hdmi_cec_data.lock);
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- return -EACCES;
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+ if (file->f_flags & O_NONBLOCK) {
|
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+ mutex_unlock(&hdmi_cec_data.lock);
|
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+ return -EAGAIN;
|
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+ } else {
|
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+ do {
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+ mutex_unlock(&hdmi_cec_data.lock);
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+ if (wait_event_interruptible(hdmi_cec_queue, (!list_empty(&head))))
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+ return -ERESTARTSYS;
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+ mutex_lock(&hdmi_cec_data.lock);
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+ } while (list_empty(&head));
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+ }
|
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}
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+
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event = list_first_entry(&head, struct hdmi_cec_event, list);
|
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list_del(&event->list);
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mutex_unlock(&hdmi_cec_data.lock);
|
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-
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if (copy_to_user(buf, event,
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- sizeof(struct hdmi_cec_event) - sizeof(struct list_head))) {
|
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+ sizeof(struct hdmi_cec_event) - sizeof(struct list_head))) {
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vfree(event);
|
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return -EFAULT;
|
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}
|
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vfree(event);
|
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-
|
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- return sizeof(struct hdmi_cec_event);
|
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+ return (sizeof(struct hdmi_cec_event) - sizeof(struct list_head));
|
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}
|
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|
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static ssize_t hdmi_cec_write(struct file *file, const char __user *buf,
|
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@@ -339,58 +304,77 @@ static ssize_t hdmi_cec_write(struct file *file, const char __user *buf,
|
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u8 msg_len = 0, val = 0;
|
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|
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pr_debug("function : %s\n", __func__);
|
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+
|
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if (!open_count)
|
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return -ENODEV;
|
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-
|
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mutex_lock(&hdmi_cec_data.lock);
|
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if (false == hdmi_cec_data.cec_state) {
|
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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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+ 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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+ }
|
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mutex_unlock(&hdmi_cec_data.lock);
|
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-
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if (count > MAX_MESSAGE_LEN)
|
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return -EINVAL;
|
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-
|
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- mutex_lock(&hdmi_cec_data.lock);
|
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- hdmi_cec_data.send_error = 0;
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memset(&msg, 0, MAX_MESSAGE_LEN);
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ret = copy_from_user(&msg, buf, count);
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- if (ret) {
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- ret = -EACCES;
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- goto end;
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- }
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-
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+ if (ret)
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+ return -EACCES;
|
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+ mutex_lock(&hdmi_cec_data.lock);
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+ hdmi_cec_data.send_error = 0;
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+ hdmi_cec_data.tx_answer = CEC_TX_INPROGRESS;
|
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msg_len = count;
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hdmi_writeb(msg_len, HDMI_CEC_TX_CNT);
|
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- for (i = 0; i < msg_len; i++) {
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+ for (i = 0; i < msg_len; i++)
|
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hdmi_writeb(msg[i], HDMI_CEC_TX_DATA0+i);
|
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- }
|
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-
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val = hdmi_readb(HDMI_CEC_CTRL);
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val |= 0x01;
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hdmi_writeb(val, HDMI_CEC_CTRL);
|
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memcpy(hdmi_cec_data.last_msg, msg, msg_len);
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hdmi_cec_data.msg_len = msg_len;
|
||||
+ mutex_unlock(&hdmi_cec_data.lock);
|
||||
|
||||
- i = 0;
|
||||
- val = hdmi_readb(HDMI_CEC_CTRL);
|
||||
- while ((val & 0x01) == 0x1) {
|
||||
- msleep(50);
|
||||
- i++;
|
||||
- if (i > 3) {
|
||||
- ret = -EIO;
|
||||
- goto end;
|
||||
- }
|
||||
- val = hdmi_readb(HDMI_CEC_CTRL);
|
||||
+ ret = wait_event_interruptible_timeout(tx_cec_queue, hdmi_cec_data.tx_answer != CEC_TX_INPROGRESS, HZ);
|
||||
+
|
||||
+ if (ret < 0) {
|
||||
+ ret = -ERESTARTSYS;
|
||||
+ goto tx_out;
|
||||
}
|
||||
|
||||
-end:
|
||||
- mutex_unlock(&hdmi_cec_data.lock);
|
||||
+ if (hdmi_cec_data.tx_answer & HDMI_IH_CEC_STAT0_DONE)
|
||||
+ /* msg correctly sent */
|
||||
+ ret = msg_len;
|
||||
+ else
|
||||
+ ret = -EIO;
|
||||
|
||||
+ tx_out:
|
||||
+ hdmi_cec_data.tx_answer = CEC_TX_AVAIL;
|
||||
return ret;
|
||||
}
|
||||
|
||||
+
|
||||
+static void hdmi_stop_device(void)
|
||||
+{
|
||||
+ u8 val;
|
||||
+
|
||||
+ hdmi_writeb(0x10, HDMI_CEC_CTRL);
|
||||
+ val = HDMI_IH_CEC_STAT0_WAKEUP | HDMI_IH_CEC_STAT0_ERROR_FOLL | HDMI_IH_CEC_STAT0_ERROR_INIT | HDMI_IH_CEC_STAT0_ARB_LOST | \
|
||||
+ HDMI_IH_CEC_STAT0_NACK | HDMI_IH_CEC_STAT0_EOM | HDMI_IH_CEC_STAT0_DONE;
|
||||
+ hdmi_writeb(val, HDMI_CEC_MASK);
|
||||
+ hdmi_writeb(val, HDMI_IH_MUTE_CEC_STAT0);
|
||||
+ hdmi_writeb(0x0, HDMI_CEC_POLARITY);
|
||||
+ val = hdmi_readb(HDMI_MC_CLKDIS);
|
||||
+ val |= HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
||||
+ hdmi_writeb(val, HDMI_MC_CLKDIS);
|
||||
+ mutex_lock(&hdmi_cec_data.lock);
|
||||
+ hdmi_cec_data.cec_state = false;
|
||||
+ mutex_unlock(&hdmi_cec_data.lock);
|
||||
+}
|
||||
+
|
||||
/*!
|
||||
* @brief IO ctrl function for vpu file operation
|
||||
* @param cmd IO ctrl command
|
||||
@@ -402,93 +386,59 @@ static long hdmi_cec_ioctl(struct file *filp, u_int cmd,
|
||||
int ret = 0, status = 0;
|
||||
u8 val = 0, msg = 0;
|
||||
struct mxc_edid_cfg hdmi_edid_cfg;
|
||||
-
|
||||
pr_debug("function : %s\n", __func__);
|
||||
if (!open_count)
|
||||
return -ENODEV;
|
||||
-
|
||||
switch (cmd) {
|
||||
case HDMICEC_IOC_SETLOGICALADDRESS:
|
||||
mutex_lock(&hdmi_cec_data.lock);
|
||||
if (false == hdmi_cec_data.cec_state) {
|
||||
mutex_unlock(&hdmi_cec_data.lock);
|
||||
+ pr_err("Trying to set logical address while not started\n");
|
||||
return -EACCES;
|
||||
}
|
||||
-
|
||||
hdmi_cec_data.Logical_address = (u8)arg;
|
||||
-
|
||||
if (hdmi_cec_data.Logical_address <= 7) {
|
||||
val = 1 << hdmi_cec_data.Logical_address;
|
||||
hdmi_writeb(val, HDMI_CEC_ADDR_L);
|
||||
hdmi_writeb(0, HDMI_CEC_ADDR_H);
|
||||
- } else if (hdmi_cec_data.Logical_address > 7 &&
|
||||
- hdmi_cec_data.Logical_address <= 15) {
|
||||
+ } else if (hdmi_cec_data.Logical_address > 7 && hdmi_cec_data.Logical_address <= 15) {
|
||||
val = 1 << (hdmi_cec_data.Logical_address - 8);
|
||||
hdmi_writeb(val, HDMI_CEC_ADDR_H);
|
||||
hdmi_writeb(0, HDMI_CEC_ADDR_L);
|
||||
- } else {
|
||||
+ } else
|
||||
ret = -EINVAL;
|
||||
- }
|
||||
-
|
||||
- /* Send Polling message with same source
|
||||
- * and destination address
|
||||
- */
|
||||
+ /*Send Polling message with same source and destination address*/
|
||||
if (0 == ret && 15 != hdmi_cec_data.Logical_address) {
|
||||
- msg = (hdmi_cec_data.Logical_address << 4) |
|
||||
- hdmi_cec_data.Logical_address;
|
||||
+ msg = (hdmi_cec_data.Logical_address << 4)|hdmi_cec_data.Logical_address;
|
||||
hdmi_writeb(1, HDMI_CEC_TX_CNT);
|
||||
hdmi_writeb(msg, HDMI_CEC_TX_DATA0);
|
||||
-
|
||||
val = hdmi_readb(HDMI_CEC_CTRL);
|
||||
val |= 0x01;
|
||||
hdmi_writeb(val, HDMI_CEC_CTRL);
|
||||
}
|
||||
-
|
||||
mutex_unlock(&hdmi_cec_data.lock);
|
||||
break;
|
||||
-
|
||||
case HDMICEC_IOC_STARTDEVICE:
|
||||
val = hdmi_readb(HDMI_MC_CLKDIS);
|
||||
val &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
||||
hdmi_writeb(val, HDMI_MC_CLKDIS);
|
||||
-
|
||||
hdmi_writeb(0x02, HDMI_CEC_CTRL);
|
||||
-
|
||||
- val = HDMI_IH_CEC_STAT0_ERROR_INIT | HDMI_IH_CEC_STAT0_NACK |
|
||||
- HDMI_IH_CEC_STAT0_EOM | HDMI_IH_CEC_STAT0_DONE;
|
||||
+ /* Force read unlock */
|
||||
+ hdmi_writeb(0x0, HDMI_CEC_LOCK);
|
||||
+ val = HDMI_IH_CEC_STAT0_ERROR_INIT | HDMI_IH_CEC_STAT0_NACK | HDMI_IH_CEC_STAT0_EOM | HDMI_IH_CEC_STAT0_DONE;
|
||||
hdmi_writeb(val, HDMI_CEC_POLARITY);
|
||||
-
|
||||
- val = HDMI_IH_CEC_STAT0_WAKEUP | HDMI_IH_CEC_STAT0_ERROR_FOLL |
|
||||
- HDMI_IH_CEC_STAT0_ARB_LOST;
|
||||
+ val = HDMI_IH_CEC_STAT0_WAKEUP | HDMI_IH_CEC_STAT0_ERROR_FOLL | HDMI_IH_CEC_STAT0_ARB_LOST;
|
||||
hdmi_writeb(val, HDMI_CEC_MASK);
|
||||
hdmi_writeb(val, HDMI_IH_MUTE_CEC_STAT0);
|
||||
-
|
||||
+ hdmi_cec_data.link_status = hdmi_readb(HDMI_PHY_STAT0) & 0x02;
|
||||
mutex_lock(&hdmi_cec_data.lock);
|
||||
hdmi_cec_data.cec_state = true;
|
||||
mutex_unlock(&hdmi_cec_data.lock);
|
||||
break;
|
||||
-
|
||||
case HDMICEC_IOC_STOPDEVICE:
|
||||
- hdmi_writeb(0x10, HDMI_CEC_CTRL);
|
||||
-
|
||||
- val = HDMI_IH_CEC_STAT0_WAKEUP | HDMI_IH_CEC_STAT0_ERROR_FOLL |
|
||||
- HDMI_IH_CEC_STAT0_ERROR_INIT | HDMI_IH_CEC_STAT0_ARB_LOST |
|
||||
- HDMI_IH_CEC_STAT0_NACK | HDMI_IH_CEC_STAT0_EOM |
|
||||
- HDMI_IH_CEC_STAT0_DONE;
|
||||
- hdmi_writeb(val, HDMI_CEC_MASK);
|
||||
- hdmi_writeb(val, HDMI_IH_MUTE_CEC_STAT0);
|
||||
-
|
||||
- hdmi_writeb(0x0, HDMI_CEC_POLARITY);
|
||||
-
|
||||
- val = hdmi_readb(HDMI_MC_CLKDIS);
|
||||
- val |= HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
||||
- hdmi_writeb(val, HDMI_MC_CLKDIS);
|
||||
-
|
||||
- mutex_lock(&hdmi_cec_data.lock);
|
||||
- hdmi_cec_data.cec_state = false;
|
||||
- mutex_unlock(&hdmi_cec_data.lock);
|
||||
+ hdmi_stop_device();
|
||||
break;
|
||||
-
|
||||
case HDMICEC_IOC_GETPHYADDRESS:
|
||||
hdmi_get_edid_cfg(&hdmi_edid_cfg);
|
||||
status = copy_to_user((void __user *)arg,
|
||||
@@ -497,29 +447,25 @@ static long hdmi_cec_ioctl(struct file *filp, u_int cmd,
|
||||
if (status)
|
||||
ret = -EFAULT;
|
||||
break;
|
||||
-
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
-
|
||||
- return ret;
|
||||
+ return ret;
|
||||
}
|
||||
|
||||
/*!
|
||||
-* @brief Release function for vpu file operation
|
||||
-* @return 0 on success or negative error code on error
|
||||
-*/
|
||||
+ * @brief Release function for vpu file operation
|
||||
+ * @return 0 on success or negative error code on error
|
||||
+ */
|
||||
static int hdmi_cec_release(struct inode *inode, struct file *filp)
|
||||
{
|
||||
mutex_lock(&hdmi_cec_data.lock);
|
||||
-
|
||||
if (open_count) {
|
||||
open_count = 0;
|
||||
hdmi_cec_data.cec_state = false;
|
||||
hdmi_cec_data.Logical_address = 15;
|
||||
}
|
||||
-
|
||||
mutex_unlock(&hdmi_cec_data.lock);
|
||||
|
||||
return 0;
|
||||
@@ -531,20 +477,18 @@ static unsigned int hdmi_cec_poll(struct file *file, poll_table *wait)
|
||||
|
||||
pr_debug("function : %s\n", __func__);
|
||||
|
||||
- if (!open_count)
|
||||
- return -ENODEV;
|
||||
-
|
||||
- if (false == hdmi_cec_data.cec_state)
|
||||
- return -EACCES;
|
||||
-
|
||||
poll_wait(file, &hdmi_cec_queue, wait);
|
||||
|
||||
+ /* Always writable */
|
||||
+ mask = (POLLOUT | POLLWRNORM);
|
||||
+ mutex_lock(&hdmi_cec_data.lock);
|
||||
if (!list_empty(&head))
|
||||
- mask |= (POLLIN | POLLRDNORM);
|
||||
-
|
||||
+ mask |= (POLLIN | POLLRDNORM);
|
||||
+ mutex_unlock(&hdmi_cec_data.lock);
|
||||
return mask;
|
||||
}
|
||||
|
||||
+
|
||||
const struct file_operations hdmi_cec_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.read = hdmi_cec_read,
|
||||
@@ -563,20 +507,18 @@ static int hdmi_cec_dev_probe(struct platform_device *pdev)
|
||||
struct pinctrl *pinctrl;
|
||||
int irq = platform_get_irq(pdev, 0);
|
||||
|
||||
- hdmi_cec_major = register_chrdev(hdmi_cec_major,
|
||||
- "mxc_hdmi_cec", &hdmi_cec_fops);
|
||||
+ hdmi_cec_major = register_chrdev(hdmi_cec_major, "mxc_hdmi_cec", &hdmi_cec_fops);
|
||||
if (hdmi_cec_major < 0) {
|
||||
dev_err(&pdev->dev, "hdmi_cec: unable to get a major for HDMI CEC\n");
|
||||
err = -EBUSY;
|
||||
goto out;
|
||||
}
|
||||
-
|
||||
+
|
||||
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
||||
if (unlikely(res == NULL)) {
|
||||
dev_err(&pdev->dev, "hdmi_cec:No HDMI irq line provided\n");
|
||||
goto err_out_chrdev;
|
||||
}
|
||||
-
|
||||
spin_lock_init(&hdmi_cec_data.irq_lock);
|
||||
|
||||
err = devm_request_irq(&pdev->dev, irq, mxc_hdmi_cec_isr, IRQF_SHARED,
|
||||
@@ -592,8 +534,8 @@ static int hdmi_cec_dev_probe(struct platform_device *pdev)
|
||||
goto err_out_chrdev;
|
||||
}
|
||||
|
||||
- temp_class = device_create(hdmi_cec_class, NULL,
|
||||
- MKDEV(hdmi_cec_major, 0), NULL, "mxc_hdmi_cec");
|
||||
+ temp_class = device_create(hdmi_cec_class, NULL, MKDEV(hdmi_cec_major, 0),
|
||||
+ NULL, "mxc_hdmi_cec");
|
||||
if (IS_ERR(temp_class)) {
|
||||
err = PTR_ERR(temp_class);
|
||||
goto err_out_class;
|
||||
@@ -606,15 +548,14 @@ static int hdmi_cec_dev_probe(struct platform_device *pdev)
|
||||
}
|
||||
|
||||
init_waitqueue_head(&hdmi_cec_queue);
|
||||
+ init_waitqueue_head(&tx_cec_queue);
|
||||
|
||||
INIT_LIST_HEAD(&head);
|
||||
|
||||
mutex_init(&hdmi_cec_data.lock);
|
||||
-
|
||||
hdmi_cec_data.Logical_address = 15;
|
||||
-
|
||||
+ hdmi_cec_data.tx_answer = CEC_TX_AVAIL;
|
||||
platform_set_drvdata(pdev, &hdmi_cec_data);
|
||||
-
|
||||
INIT_DELAYED_WORK(&hdmi_cec_data.hdmi_cec_work, mxc_hdmi_cec_worker);
|
||||
|
||||
dev_info(&pdev->dev, "HDMI CEC initialized\n");
|
||||
@@ -631,12 +572,14 @@ static int hdmi_cec_dev_probe(struct platform_device *pdev)
|
||||
|
||||
static int hdmi_cec_dev_remove(struct platform_device *pdev)
|
||||
{
|
||||
+ if (hdmi_cec_data.cec_state)
|
||||
+ hdmi_stop_device();
|
||||
if (hdmi_cec_major > 0) {
|
||||
device_destroy(hdmi_cec_class, MKDEV(hdmi_cec_major, 0));
|
||||
class_destroy(hdmi_cec_class);
|
||||
unregister_chrdev(hdmi_cec_major, "mxc_hdmi_cec");
|
||||
hdmi_cec_major = 0;
|
||||
- }
|
||||
+}
|
||||
return 0;
|
||||
}
|
||||
|
||||
@@ -650,9 +593,9 @@ static struct platform_driver mxc_hdmi_cec_driver = {
|
||||
.probe = hdmi_cec_dev_probe,
|
||||
.remove = hdmi_cec_dev_remove,
|
||||
.driver = {
|
||||
- .name = "mxc_hdmi_cec",
|
||||
+ .name = "mxc_hdmi_cec",
|
||||
.of_match_table = imx_hdmi_cec_match,
|
||||
- },
|
||||
+ },
|
||||
};
|
||||
|
||||
module_platform_driver(mxc_hdmi_cec_driver);
|
||||
diff --git a/drivers/video/mxc/mxc_hdmi.c b/drivers/video/mxc/mxc_hdmi.c
|
||||
index 20c6d70..88d62ce 100644
|
||||
--- a/drivers/video/mxc/mxc_hdmi.c
|
||||
+++ b/drivers/video/mxc/mxc_hdmi.c
|
||||
@@ -1708,8 +1708,12 @@ static void mxc_hdmi_enable_video_path(struct mxc_hdmi *hdmi)
|
||||
hdmi_writeb(0x16, HDMI_FC_CH1PREAM);
|
||||
hdmi_writeb(0x21, HDMI_FC_CH2PREAM);
|
||||
|
||||
+ /* Save CEC clock */
|
||||
+ clkdis = hdmi_readb(HDMI_MC_CLKDIS) & HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
||||
+ clkdis |= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
||||
+
|
||||
/* Enable pixel clock and tmds data path */
|
||||
- clkdis = 0x7F;
|
||||
+ clkdis = 0x7F & clkdis;
|
||||
clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE;
|
||||
hdmi_writeb(clkdis, HDMI_MC_CLKDIS);
|
||||
|
||||
@@ -1990,10 +1994,16 @@ static void mxc_hdmi_power_off(struct mxc_dispdrv_handle *disp)
|
||||
|
||||
static void mxc_hdmi_cable_disconnected(struct mxc_hdmi *hdmi)
|
||||
{
|
||||
+ u8 clkdis;
|
||||
+
|
||||
dev_dbg(&hdmi->pdev->dev, "%s\n", __func__);
|
||||
|
||||
+ /* Save CEC clock */
|
||||
+ clkdis = hdmi_readb(HDMI_MC_CLKDIS) & HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
||||
+ clkdis |= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
||||
+
|
||||
/* Disable All HDMI clock */
|
||||
- hdmi_writeb(0xff, HDMI_MC_CLKDIS);
|
||||
+ hdmi_writeb(0xff & clkdis, HDMI_MC_CLKDIS);
|
||||
|
||||
mxc_hdmi_phy_disable(hdmi);
|
||||
|
||||
--
|
||||
1.9.1
|
||||
|
||||
@ -1,76 +0,0 @@
|
||||
From 76796e32b20dd8f34aadad8fd91672017d143812 Mon Sep 17 00:00:00 2001
|
||||
From: wolfgar <stephan.rafin@laposte.net>
|
||||
Date: Tue, 29 Apr 2014 01:35:01 +0200
|
||||
Subject: [PATCH] Fix a bug that could result in CEC interrupts to be
|
||||
improperly muted in case the CEC_STAT register was 0, the worker was not
|
||||
invoked and as a consequence the interrupts were not unmuted Also try to play
|
||||
better with the interrupt sharing with hmdi_video
|
||||
|
||||
---
|
||||
drivers/mxc/hdmi-cec/mxc_hdmi-cec.c | 21 +++++++++++----------
|
||||
1 file changed, 11 insertions(+), 10 deletions(-)
|
||||
|
||||
diff --git a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
|
||||
index 3a8aff4..85e259c 100644
|
||||
--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
|
||||
+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
|
||||
@@ -97,6 +97,7 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
|
||||
u16 cec_stat = 0;
|
||||
unsigned long flags;
|
||||
u8 phy_stat0;
|
||||
+ irqreturn_t ret = IRQ_HANDLED;
|
||||
|
||||
spin_lock_irqsave(&hdmi_cec->irq_lock, flags);
|
||||
|
||||
@@ -105,6 +106,13 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
|
||||
cec_stat = hdmi_readb(HDMI_IH_CEC_STAT0);
|
||||
hdmi_writeb(cec_stat, HDMI_IH_CEC_STAT0);
|
||||
phy_stat0 = hdmi_readb(HDMI_PHY_STAT0) & 0x02;
|
||||
+
|
||||
+ if ((cec_stat & (HDMI_IH_CEC_STAT0_ERROR_INIT | \
|
||||
+ HDMI_IH_CEC_STAT0_NACK | HDMI_IH_CEC_STAT0_EOM | \
|
||||
+ HDMI_IH_CEC_STAT0_DONE)) == 0) {
|
||||
+ ret = IRQ_NONE;
|
||||
+ cec_stat = 0;
|
||||
+ }
|
||||
if (hdmi_cec->link_status ^ phy_stat0) {
|
||||
/* HPD value changed */
|
||||
hdmi_cec->link_status = phy_stat0;
|
||||
@@ -113,21 +121,14 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
|
||||
else
|
||||
cec_stat |= 0x100; /* Disconnected */
|
||||
}
|
||||
- if ((cec_stat & (HDMI_IH_CEC_STAT0_ERROR_INIT | \
|
||||
- HDMI_IH_CEC_STAT0_NACK | HDMI_IH_CEC_STAT0_EOM | \
|
||||
- HDMI_IH_CEC_STAT0_DONE | 0x180)) == 0) {
|
||||
- spin_unlock_irqrestore(&hdmi_cec->irq_lock, flags);
|
||||
- return IRQ_HANDLED;
|
||||
- }
|
||||
pr_debug("HDMI CEC interrupt received\n");
|
||||
- /* FIXME : there is a race with latest_cec_stat */
|
||||
hdmi_cec->latest_cec_stat = cec_stat ;
|
||||
|
||||
schedule_delayed_work(&(hdmi_cec->hdmi_cec_work), msecs_to_jiffies(20));
|
||||
|
||||
spin_unlock_irqrestore(&hdmi_cec->irq_lock, flags);
|
||||
|
||||
- return IRQ_HANDLED;
|
||||
+ return ret;
|
||||
}
|
||||
|
||||
void mxc_hdmi_cec_handle(u16 cec_stat)
|
||||
@@ -479,9 +480,9 @@ static unsigned int hdmi_cec_poll(struct file *file, poll_table *wait)
|
||||
|
||||
poll_wait(file, &hdmi_cec_queue, wait);
|
||||
|
||||
- /* Always writable */
|
||||
- mask = (POLLOUT | POLLWRNORM);
|
||||
mutex_lock(&hdmi_cec_data.lock);
|
||||
+ if (hdmi_cec_data.tx_answer == CEC_TX_AVAIL)
|
||||
+ mask = (POLLOUT | POLLWRNORM);
|
||||
if (!list_empty(&head))
|
||||
mask |= (POLLIN | POLLRDNORM);
|
||||
mutex_unlock(&hdmi_cec_data.lock);
|
||||
--
|
||||
1.9.1
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user