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projects/imx6/patches/linux: update project based CEC driver patches

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Signed-off-by: Stephan Raue <stephan@openelec.tv>
This commit is contained in:
Stephan Raue 2014-11-11 00:44:06 +01:00
parent 885cb9c2f2
commit b4a494f231
4 changed files with 183 additions and 748 deletions
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86
projects/imx6/patches/linux/linux-910.01-cec-upstream.patch Normal file
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@ -0,0 +1,86 @@
commit 7c545ae5467cca6ce537e213ecd647fcd4c3c4c0
Author: wolfgar <stephan.rafin@laposte.net>
Date: Fri Sep 12 01:42:52 2014 +0200
Remove superflous guards that could even break invocation from mxc-hdmi
diff --git a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
index e53510f..88670bd 100644
--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
@@ -83,8 +83,6 @@ struct hdmi_cec_event {
static LIST_HEAD(head);
-static int hdmi_cec_ready = 0;
-static int hdmi_cec_started;
static int hdmi_cec_major;
static struct class *hdmi_cec_class;
static struct hdmi_cec_priv hdmi_cec_data;
@@ -315,7 +313,7 @@ static ssize_t hdmi_cec_write(struct file *file, const char __user *buf,
mutex_unlock(&hdmi_cec_data.lock);
return -EACCES;
}
- /* Ensure that there is only one writer who is the only listener of tx_cec_queue */
+ /* Ensure that there is only one writer who is the unique listener of tx_cec_queue */
if (hdmi_cec_data.tx_answer != CEC_TX_AVAIL) {
mutex_unlock(&hdmi_cec_data.lock);
return -EBUSY;
@@ -359,13 +357,11 @@ static ssize_t hdmi_cec_write(struct file *file, const char __user *buf,
return ret;
}
+
void hdmi_cec_start_device(void)
{
u8 val;
- if (!hdmi_cec_ready || hdmi_cec_started)
- return;
-
val = hdmi_readb(HDMI_MC_CLKDIS);
val &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
hdmi_writeb(val, HDMI_MC_CLKDIS);
@@ -378,11 +374,7 @@ void hdmi_cec_start_device(void)
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);
-
- hdmi_cec_started = 1;
}
EXPORT_SYMBOL(hdmi_cec_start_device);
@@ -390,9 +382,6 @@ void hdmi_cec_stop_device(void)
{
u8 val;
- if (!hdmi_cec_ready || !hdmi_cec_started)
- return;
-
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;
@@ -402,11 +391,7 @@ void hdmi_cec_stop_device(void)
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_cec_started = 0;
}
EXPORT_SYMBOL(hdmi_cec_stop_device);
@@ -580,7 +565,6 @@ static int hdmi_cec_dev_probe(struct platform_device *pdev)
INIT_DELAYED_WORK(&hdmi_cec_data.hdmi_cec_work, mxc_hdmi_cec_worker);
dev_info(&pdev->dev, "HDMI CEC initialized\n");
- hdmi_cec_ready = 1;
goto out;
err_out_class:

29
projects/imx6/patches/linux/linux-910.02-cec-upstream.patch Normal file
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@ -0,0 +1,29 @@
commit b6b72f40ec3b9d7faa0e37e87c3509848928746c
Author: wolfgar <stephan.rafin@laposte.net>
Date: Fri Sep 12 03:05:22 2014 +0200
Flush pending events at close
diff --git a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
index 88670bd..f8b3f7a 100644
--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
@@ -466,11 +466,18 @@ static long hdmi_cec_ioctl(struct file *filp, u_int cmd,
*/
static int hdmi_cec_release(struct inode *inode, struct file *filp)
{
+ struct hdmi_cec_event *event, *tmp_event;
mutex_lock(&hdmi_cec_data.lock);
if (open_count) {
open_count = 0;
hdmi_cec_data.cec_state = false;
hdmi_cec_data.Logical_address = 15;
+
+ /* Flush eventual events which have not been read by user space */
+ list_for_each_entry_safe(event, tmp_event, &head, list) {
+ list_del(&event->list);
+ vfree(event);
+ }
}
mutex_unlock(&hdmi_cec_data.lock);

68
projects/imx6/patches/linux/linux-910.03-cec-upstream.patch Normal file
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@ -0,0 +1,68 @@
commit 83ee92e168bc5d744f96961254ffac95a6260220
Author: wolfgar <stephan.rafin@laposte.net>
Date: Sat Sep 13 01:58:08 2014 +0200
No longer try to get link status directly in this driver
Only consume the event sent by mxc-hdmi driver
diff --git a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
index f8b3f7a..c30237e 100644
--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
@@ -67,7 +67,6 @@ struct hdmi_cec_priv {
u8 msg_len;
int tx_answer;
u16 latest_cec_stat;
- u8 link_status;
spinlock_t irq_lock;
struct delayed_work hdmi_cec_work;
struct mutex lock;
@@ -96,7 +95,6 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
struct hdmi_cec_priv *hdmi_cec = data;
u16 cec_stat = 0;
unsigned long flags;
- u8 phy_stat0;
irqreturn_t ret = IRQ_HANDLED;
spin_lock_irqsave(&hdmi_cec->irq_lock, flags);
@@ -105,7 +103,6 @@ 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 | \
@@ -113,14 +110,7 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
ret = IRQ_NONE;
cec_stat = 0;
}
- if (hdmi_cec->link_status ^ phy_stat0) {
- /* HPD value changed */
- hdmi_cec->link_status = phy_stat0;
- if (hdmi_cec->link_status)
- cec_stat |= 0x80; /* Connected */
- else
- cec_stat |= 0x100; /* Disconnected */
- }
+
pr_debug("HDMI CEC interrupt received\n");
hdmi_cec->latest_cec_stat = cec_stat ;
@@ -357,7 +347,6 @@ static ssize_t hdmi_cec_write(struct file *file, const char __user *buf,
return ret;
}
-
void hdmi_cec_start_device(void)
{
u8 val;
@@ -373,7 +362,6 @@ void hdmi_cec_start_device(void)
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;
hdmi_cec_data.cec_state = true;
}
EXPORT_SYMBOL(hdmi_cec_start_device);

748
projects/imx6/patches/linux/linux-999.91-cec-imx6.patch
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@ -1,748 +0,0 @@
From 6393e78183c01a13b371874617e5d230aa93af7c Mon Sep 17 00:00:00 2001
From: Matus Kral <matuskral@me.com>
Date: Tue, 2 Sep 2014 23:24:59 +0200
Subject: [PATCH] CEC re-patch
---
drivers/mxc/hdmi-cec/mxc_hdmi-cec.c | 467 +++++++++++++++++-------------------
drivers/mxc/hdmi-cec/mxc_hdmi-cec.h | 9 +
drivers/video/mxc/mxc_hdmi.c | 3 +-
3 files changed, 235 insertions(+), 244 deletions(-)
diff --git a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
index e53510f..dc0cbf8 100644
--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.c
@@ -46,28 +46,15 @@
#include "mxc_hdmi-cec.h"
-
-#define MAX_MESSAGE_LEN 17
-
-#define MESSAGE_TYPE_RECEIVE_SUCCESS 1
-#define MESSAGE_TYPE_NOACK 2
-#define MESSAGE_TYPE_DISCONNECTED 3
-#define MESSAGE_TYPE_CONNECTED 4
-#define MESSAGE_TYPE_SEND_SUCCESS 5
-
-#define CEC_TX_INPROGRESS -1
-#define CEC_TX_AVAIL 0
-
struct hdmi_cec_priv {
int receive_error;
int send_error;
u8 Logical_address;
bool cec_state;
+ bool write_busy;
u8 last_msg[MAX_MESSAGE_LEN];
u8 msg_len;
- int tx_answer;
- u16 latest_cec_stat;
- u8 link_status;
+ u8 latest_cec_stat;
spinlock_t irq_lock;
struct delayed_work hdmi_cec_work;
struct mutex lock;
@@ -80,25 +67,20 @@ struct hdmi_cec_event {
struct list_head list;
};
-
static LIST_HEAD(head);
static int hdmi_cec_ready = 0;
-static int hdmi_cec_started;
static int hdmi_cec_major;
static struct class *hdmi_cec_class;
static struct hdmi_cec_priv hdmi_cec_data;
static u8 open_count;
static wait_queue_head_t hdmi_cec_queue;
-static wait_queue_head_t tx_cec_queue;
-
static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
{
struct hdmi_cec_priv *hdmi_cec = data;
- u16 cec_stat = 0;
+ u8 cec_stat = 0;
unsigned long flags;
- u8 phy_stat0;
irqreturn_t ret = IRQ_HANDLED;
spin_lock_irqsave(&hdmi_cec->irq_lock, flags);
@@ -107,27 +89,19 @@ 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) {
+
+ hdmi_cec->latest_cec_stat = 0;
ret = IRQ_NONE;
- cec_stat = 0;
- }
- if (hdmi_cec->link_status ^ phy_stat0) {
- /* HPD value changed */
- hdmi_cec->link_status = phy_stat0;
- if (hdmi_cec->link_status)
- cec_stat |= 0x80; /* Connected */
- else
- cec_stat |= 0x100; /* Disconnected */
+ } else {
+ pr_debug("HDMI CEC interrupt received\n");
+ hdmi_cec->latest_cec_stat = cec_stat;
}
- pr_debug("HDMI CEC interrupt received\n");
- 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 ret;
@@ -135,19 +109,58 @@ static irqreturn_t mxc_hdmi_cec_isr(int irq, void *data)
void mxc_hdmi_cec_handle(u16 cec_stat)
{
- u8 val = 0, i = 0;
+ u8 i = 0;
struct hdmi_cec_event *event = NULL;
- /*The current transmission is successful (for initiator only).*/
+
if (!open_count)
return;
+ /* The current transmission is successful (for initiator only).*/
if (cec_stat & HDMI_IH_CEC_STAT0_DONE) {
- hdmi_cec_data.tx_answer = cec_stat;
- wake_up(&tx_cec_queue);
+
+ event = vmalloc(sizeof(struct hdmi_cec_event));
+ if (NULL == event) {
+ pr_err("%s: Not enough memory!\n", __func__);
+ return;
+ }
+ memset(event, 0, sizeof(struct hdmi_cec_event));
+
+ mutex_lock(&hdmi_cec_data.lock);
+ event->msg_len = min((int)hdmi_cec_data.msg_len, 2);
+ for (i = 0; i < event->msg_len; i++)
+ event->msg[i] = hdmi_cec_data.last_msg[i];
+
+ event->event_type = MESSAGE_TYPE_SEND_SUCCESS;
+
+ list_add_tail(&event->list, &head);
+ mutex_unlock(&hdmi_cec_data.lock);
+
+ wake_up(&hdmi_cec_queue);
}
/*EOM is detected so that the received data is ready in the receiver data buffer*/
+ if (cec_stat & HDMI_IH_CEC_STAT0_NACK) {
+
+ event = vmalloc(sizeof(struct hdmi_cec_event));
+ if (NULL == event) {
+ pr_err("%s: Not enough memory!\n", __func__);
+ return;
+ }
+ memset(event, 0, sizeof(struct hdmi_cec_event));
+
+ mutex_lock(&hdmi_cec_data.lock);
+ event->msg_len = min((int)hdmi_cec_data.msg_len, 2);
+ for (i = 0; i < event->msg_len; i++)
+ event->msg[i] = hdmi_cec_data.last_msg[i];
+
+ event->event_type = MESSAGE_TYPE_NOACK;
+
+ list_add_tail(&event->list, &head);
+ mutex_unlock(&hdmi_cec_data.lock);
+
+ wake_up(&hdmi_cec_queue);
+ }
+
if (cec_stat & HDMI_IH_CEC_STAT0_EOM) {
- hdmi_writeb(0x02, HDMI_IH_CEC_STAT0);
event = vmalloc(sizeof(struct hdmi_cec_event));
if (NULL == event) {
pr_err("%s: Not enough memory!\n", __func__);
@@ -170,64 +183,29 @@ void mxc_hdmi_cec_handle(u16 cec_stat)
}
/*An error is detected on cec line (for initiator only). */
if (cec_stat & HDMI_IH_CEC_STAT0_ERROR_INIT) {
- mutex_lock(&hdmi_cec_data.lock);
hdmi_cec_data.send_error++;
- if (hdmi_cec_data.send_error > 2) {
- pr_err("%s:Re-transmission is attempted more than 2 times!\n", __func__);
- hdmi_cec_data.send_error = 0;
- mutex_unlock(&hdmi_cec_data.lock);
- hdmi_cec_data.tx_answer = cec_stat;
- wake_up(&tx_cec_queue);
- return;
- }
- for (i = 0; i < hdmi_cec_data.msg_len; i++)
- hdmi_writeb(hdmi_cec_data.last_msg[i], HDMI_CEC_TX_DATA0+i);
- hdmi_writeb(hdmi_cec_data.msg_len, HDMI_CEC_TX_CNT);
- val = hdmi_readb(HDMI_CEC_CTRL);
- val |= 0x01;
- hdmi_writeb(val, HDMI_CEC_CTRL);
- mutex_unlock(&hdmi_cec_data.lock);
- }
- /*A frame is not acknowledged in a directly addressed message. Or a frame is negatively acknowledged in
- a broadcast message (for initiator only).*/
- if (cec_stat & HDMI_IH_CEC_STAT0_NACK) {
- hdmi_cec_data.tx_answer = cec_stat;
- wake_up(&tx_cec_queue);
}
/*An error is notified by a follower. Abnormal logic data bit error (for follower).*/
if (cec_stat & HDMI_IH_CEC_STAT0_ERROR_FOLL) {
hdmi_cec_data.receive_error++;
}
- /*HDMI cable connected*/
- if (cec_stat & 0x80) {
- pr_info("HDMI link connected\n");
- event = vmalloc(sizeof(struct hdmi_cec_event));
- if (NULL == event) {
- pr_err("%s: Not enough memory\n", __func__);
- return;
- }
- memset(event, 0, sizeof(struct hdmi_cec_event));
- event->event_type = MESSAGE_TYPE_CONNECTED;
+ /* HDMI cable connected / HDMI cable disconnected */
+ if (cec_stat & (0x80 | 0x100)) {
mutex_lock(&hdmi_cec_data.lock);
- list_add_tail(&event->list, &head);
+ hdmi_cec_data.write_busy = (cec_stat & 0x80) ? false : true;
mutex_unlock(&hdmi_cec_data.lock);
- wake_up(&hdmi_cec_queue);
- }
- /*HDMI cable disconnected*/
- if (cec_stat & 0x100) {
- pr_info("HDMI link disconnected\n");
event = vmalloc(sizeof(struct hdmi_cec_event));
if (NULL == event) {
pr_err("%s: Not enough memory!\n", __func__);
return;
}
memset(event, 0, sizeof(struct hdmi_cec_event));
- event->event_type = MESSAGE_TYPE_DISCONNECTED;
- mutex_lock(&hdmi_cec_data.lock);
+ event->event_type = (cec_stat & 0x80) ?
+ MESSAGE_TYPE_CONNECTED : MESSAGE_TYPE_DISCONNECTED;
list_add_tail(&event->list, &head);
- mutex_unlock(&hdmi_cec_data.lock);
wake_up(&hdmi_cec_queue);
}
+
return;
}
EXPORT_SYMBOL(mxc_hdmi_cec_handle);
@@ -262,153 +240,100 @@ static int hdmi_cec_open(struct inode *inode, struct file *filp)
static ssize_t hdmi_cec_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
- struct hdmi_cec_event *event = NULL;
- pr_debug("function : %s\n", __func__);
+ struct hdmi_cec_priv *hdmi_cec = file->private_data;
+ int ret = 0;
+ pr_debug("function : %s\n", __func__);
if (!open_count)
return -ENODEV;
- mutex_lock(&hdmi_cec_data.lock);
- if (false == hdmi_cec_data.cec_state) {
- mutex_unlock(&hdmi_cec_data.lock);
- return -EACCES;
- }
- if (list_empty(&head)) {
- if (file->f_flags & O_NONBLOCK) {
- mutex_unlock(&hdmi_cec_data.lock);
- return -EAGAIN;
- } else {
- do {
- mutex_unlock(&hdmi_cec_data.lock);
- if (wait_event_interruptible(hdmi_cec_queue, (!list_empty(&head))))
- return -ERESTARTSYS;
- mutex_lock(&hdmi_cec_data.lock);
- } while (list_empty(&head));
+ count = min(count, sizeof(struct hdmi_cec_event) - sizeof(struct list_head));
+
+ do {
+ unsigned long flags;
+ struct hdmi_cec_event *event = NULL;
+
+ spin_lock_irqsave(&hdmi_cec->irq_lock, flags);
+ if (!list_empty(&head)) {
+ event = list_first_entry(&head, struct hdmi_cec_event, list);
+ list_del(&event->list);
}
- }
+ spin_unlock_irqrestore(&hdmi_cec->irq_lock, flags);
- event = list_first_entry(&head, struct hdmi_cec_event, list);
- list_del(&event->list);
- mutex_unlock(&hdmi_cec_data.lock);
- if (copy_to_user(buf, event,
- sizeof(struct hdmi_cec_event) - sizeof(struct list_head))) {
- vfree(event);
- return -EFAULT;
- }
- vfree(event);
- return (sizeof(struct hdmi_cec_event) - sizeof(struct list_head));
+ if (event) {
+ ret = copy_to_user(buf, event, count) ? -EFAULT : count;
+ vfree(event);
+ }
+ else if (file->f_flags & O_NONBLOCK) {
+ ret = -EAGAIN;
+ }
+ else if (wait_event_interruptible(hdmi_cec_queue, (!list_empty(&head)))) {
+ ret = -ERESTARTSYS;
+ }
+ } while(!ret);
+
+ return ret;
}
static ssize_t hdmi_cec_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
+ struct hdmi_cec_priv *hdmi_cec = file->private_data;
int ret = 0 , i = 0;
u8 msg[MAX_MESSAGE_LEN];
- u8 msg_len = 0, val = 0;
+ u8 val = 0;
pr_debug("function : %s\n", __func__);
-
if (!open_count)
return -ENODEV;
- mutex_lock(&hdmi_cec_data.lock);
- if (false == hdmi_cec_data.cec_state) {
- mutex_unlock(&hdmi_cec_data.lock);
- return -EACCES;
- }
- /* Ensure that there is only one writer who is the only listener of tx_cec_queue */
- if (hdmi_cec_data.tx_answer != CEC_TX_AVAIL) {
- mutex_unlock(&hdmi_cec_data.lock);
- return -EBUSY;
- }
- mutex_unlock(&hdmi_cec_data.lock);
- if (count > MAX_MESSAGE_LEN)
- return -EINVAL;
- memset(&msg, 0, MAX_MESSAGE_LEN);
- ret = copy_from_user(&msg, buf, count);
- if (ret)
- return -EACCES;
- mutex_lock(&hdmi_cec_data.lock);
- hdmi_cec_data.send_error = 0;
- hdmi_cec_data.tx_answer = CEC_TX_INPROGRESS;
- msg_len = count;
- hdmi_writeb(msg_len, HDMI_CEC_TX_CNT);
- for (i = 0; i < msg_len; i++)
- hdmi_writeb(msg[i], HDMI_CEC_TX_DATA0+i);
- val = hdmi_readb(HDMI_CEC_CTRL);
- val |= 0x01;
- hdmi_writeb(val, HDMI_CEC_CTRL);
- memcpy(hdmi_cec_data.last_msg, msg, msg_len);
- hdmi_cec_data.msg_len = msg_len;
- mutex_unlock(&hdmi_cec_data.lock);
-
- 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;
- }
-
- 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;
-}
-
-void hdmi_cec_start_device(void)
-{
- u8 val;
- if (!hdmi_cec_ready || hdmi_cec_started)
- return;
+ if (count > MAX_MESSAGE_LEN)
+ return -E2BIG;
- val = hdmi_readb(HDMI_MC_CLKDIS);
- val &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
- hdmi_writeb(val, HDMI_MC_CLKDIS);
- hdmi_writeb(0x02, HDMI_CEC_CTRL);
- /* 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;
- 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);
+ memset(&msg, 0, MAX_MESSAGE_LEN);
+ if (copy_from_user(&msg, buf, count))
+ return -EFAULT;
- hdmi_cec_started = 1;
-}
-EXPORT_SYMBOL(hdmi_cec_start_device);
+ do {
+ if (file->f_flags & O_NONBLOCK) {
+ if (hdmi_cec->write_busy)
+ ret = -EAGAIN;
+ } else if (wait_event_interruptible(hdmi_cec_queue, (!hdmi_cec->write_busy))) {
+ ret = -ERESTARTSYS;
+ }
+ if (ret)
+ break;
-void hdmi_cec_stop_device(void)
-{
- u8 val;
+ mutex_lock(&hdmi_cec->lock);
+ hdmi_cec->write_busy = true;
- if (!hdmi_cec_ready || !hdmi_cec_started)
- return;
+ hdmi_cec->send_error = 0;
+ hdmi_writeb(count, HDMI_CEC_TX_CNT);
+ for (i = 0; i < count; i++) {
+ hdmi_writeb(msg[i], HDMI_CEC_TX_DATA0+i);
+ }
- 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);
+ val = hdmi_readb(HDMI_CEC_CTRL);
+ val |= 0x01;
+ hdmi_writeb(val, HDMI_CEC_CTRL);
+ memcpy(hdmi_cec->last_msg, msg, count);
+ hdmi_cec->msg_len = count;
+
+ for (i = 0; i++ < 300 && (hdmi_readb(HDMI_CEC_CTRL) & 0x01) && !hdmi_cec->send_error; msleep(10));
+ if (hdmi_readb(HDMI_CEC_CTRL) & 0x01 || hdmi_cec->send_error) {
+ hdmi_cec->msg_len = 0;
+ hdmi_cec->send_error = 0;
+ hdmi_writeb(0x02, HDMI_CEC_CTRL);
+ ret = -EIO;
+ } else {
+ ret = count;
+ }
+ } while(!ret);
- hdmi_cec_started = 0;
+ hdmi_cec->write_busy = false;
+ mutex_unlock(&hdmi_cec->lock);
+ return ret;
}
-EXPORT_SYMBOL(hdmi_cec_stop_device);
/*!
* @brief IO ctrl function for vpu file operation
@@ -418,12 +343,14 @@ EXPORT_SYMBOL(hdmi_cec_stop_device);
static long hdmi_cec_ioctl(struct file *filp, u_int cmd,
u_long arg)
{
- int ret = 0, status = 0;
- u8 val = 0, msg = 0;
+ int ret = 0;
+ u8 val = 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);
@@ -432,63 +359,120 @@ static long hdmi_cec_ioctl(struct file *filp, u_int cmd,
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 <= 15) {
val = 1 << (hdmi_cec_data.Logical_address - 8);
hdmi_writeb(val, HDMI_CEC_ADDR_H);
hdmi_writeb(0, HDMI_CEC_ADDR_L);
} else
ret = -EINVAL;
- /*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;
- 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:
- hdmi_cec_start_device();
+ val = hdmi_readb(HDMI_MC_CLKDIS);
+ val &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
+ hdmi_writeb(val, HDMI_MC_CLKDIS);
+
+ val = HDMI_IH_CEC_STAT0_ERROR_INIT | HDMI_IH_CEC_STAT0_NACK |
+ HDMI_IH_CEC_STAT0_EOM | HDMI_IH_CEC_STAT0_ERROR_FOLL | HDMI_IH_CEC_STAT0_DONE;
+ hdmi_writeb(val, HDMI_CEC_POLARITY);
+
+ val = HDMI_IH_CEC_STAT0_WAKEUP |
+ HDMI_IH_CEC_STAT0_ARB_LOST;
+ hdmi_writeb(val, HDMI_CEC_MASK);
+ hdmi_writeb(val, HDMI_IH_MUTE_CEC_STAT0);
+
+ hdmi_writeb(0x02, HDMI_CEC_CTRL);
+ hdmi_writeb(0x0, HDMI_CEC_LOCK);
+
+ mutex_lock(&hdmi_cec_data.lock);
+ hdmi_cec_data.cec_state = true;
+ mutex_unlock(&hdmi_cec_data.lock);
break;
+
case HDMICEC_IOC_STOPDEVICE:
- hdmi_cec_stop_device();
+ 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);
+
+ hdmi_writeb(0x10, HDMI_CEC_CTRL);
+
+ 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);
break;
+
case HDMICEC_IOC_GETPHYADDRESS:
hdmi_get_edid_cfg(&hdmi_edid_cfg);
- status = copy_to_user((void __user *)arg,
+ ret = copy_to_user((void __user *)arg,
&hdmi_edid_cfg.physical_address,
- 4*sizeof(u8));
- if (status)
- ret = -EFAULT;
+ 4*sizeof(u8))?-EFAULT:0;
break;
+
default:
ret = -EINVAL;
break;
}
- return ret;
+
+ return ret;
+}
+
+void hdmi_cec_start_device(void)
+{
+ hdmi_cec_ready = 1;
+ hdmi_cec_ioctl(0, HDMICEC_IOC_STARTDEVICE, 0);
}
+EXPORT_SYMBOL(hdmi_cec_start_device);
+
+void hdmi_cec_stop_device(void)
+{
+ hdmi_cec_ioctl(0, HDMICEC_IOC_STOPDEVICE, 0);
+ hdmi_cec_ready = 0;
+}
+EXPORT_SYMBOL(hdmi_cec_stop_device);
/*!
- * @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)
{
+ if (hdmi_cec_data.cec_state) {
+ hdmi_cec_stop_device();
+ hdmi_cec_ioctl(filp, HDMICEC_IOC_SETLOGICALADDRESS, 15);
+ }
mutex_lock(&hdmi_cec_data.lock);
if (open_count) {
+ if (!(wait_event_timeout(hdmi_cec_queue, !hdmi_cec_data.write_busy, msecs_to_jiffies(500))))
+ hdmi_cec_data.write_busy = false;
+
+ while (!list_empty(&head)) {
+ struct hdmi_cec_event *event;
+
+ event = list_first_entry(&head, struct hdmi_cec_event, list);
+ list_del(&event->list);
+ vfree(event);
+ }
open_count = 0;
- hdmi_cec_data.cec_state = false;
- hdmi_cec_data.Logical_address = 15;
}
mutex_unlock(&hdmi_cec_data.lock);
-
return 0;
}
@@ -500,16 +484,14 @@ static unsigned int hdmi_cec_poll(struct file *file, poll_table *wait)
poll_wait(file, &hdmi_cec_queue, wait);
- mutex_lock(&hdmi_cec_data.lock);
- if (hdmi_cec_data.tx_answer == CEC_TX_AVAIL)
- mask = (POLLOUT | POLLWRNORM);
+ if (!hdmi_cec_data.write_busy)
+ mask = (POLLOUT | POLLWRNORM);
if (!list_empty(&head))
- mask |= (POLLIN | POLLRDNORM);
- mutex_unlock(&hdmi_cec_data.lock);
+ mask |= (POLLIN | POLLRDNORM);
+
return mask;
}
-
const struct file_operations hdmi_cec_fops = {
.owner = THIS_MODULE,
.read = hdmi_cec_read,
@@ -534,7 +516,7 @@ static int hdmi_cec_dev_probe(struct platform_device *pdev)
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");
@@ -555,8 +537,8 @@ 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;
@@ -569,13 +551,11 @@ 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);
@@ -594,14 +574,15 @@ 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_cec_stop_device();
+ if (open_count)
+ hdmi_cec_release(0, 0);
+
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;
}
@@ -615,9 +596,9 @@ 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/mxc/hdmi-cec/mxc_hdmi-cec.h b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.h
index 4437057..297f628 100644
--- a/drivers/mxc/hdmi-cec/mxc_hdmi-cec.h
+++ b/drivers/mxc/hdmi-cec/mxc_hdmi-cec.h
@@ -35,4 +35,13 @@
#define HDMICEC_IOC_GETPHYADDRESS \
_IOR(HDMICEC_IOC_MAGIC, 4, unsigned char[4])
+#define MAX_MESSAGE_LEN 16
+
+#define MESSAGE_TYPE_RECEIVE_SUCCESS 1
+#define MESSAGE_TYPE_NOACK 2
+#define MESSAGE_TYPE_DISCONNECTED 3
+#define MESSAGE_TYPE_CONNECTED 4
+#define MESSAGE_TYPE_SEND_SUCCESS 5
+
#endif /* !_HDMICEC_H_ */
+
diff --git a/drivers/video/mxc/mxc_hdmi.c b/drivers/video/mxc/mxc_hdmi.c
index 0aac1e0..174342d 100644
--- a/drivers/video/mxc/mxc_hdmi.c
+++ b/drivers/video/mxc/mxc_hdmi.c
@@ -2074,12 +2074,13 @@ static void hotplug_worker(struct work_struct *work)
dev_dbg(&hdmi->pdev->dev, "EVENT=plugin\n");
mxc_hdmi_cable_connected(hdmi);
+ hdmi_set_cable_state(1);
+
sprintf(event_string, "EVENT=plugin");
kobject_uevent_env(&hdmi->pdev->dev.kobj, KOBJ_CHANGE, envp);
#ifdef CONFIG_MXC_HDMI_CEC
mxc_hdmi_cec_handle(0x80);
#endif
- hdmi_set_cable_state(1);
} else {
/* Plugout event */
dev_dbg(&hdmi->pdev->dev, "EVENT=plugout\n");