msm: display: HDMI: Driver support for CEC feature
Driver implementation of HDMI CEC feature. Support includes
CEC frame send and frame receive. Support added for sysfs interface
for CEC daemon to interact with the driver for reading and writing frames.
sysfs interface
/sys/class/graphics/fb1/cec
Read: CEC block state.
Write: Enable/Disable CEC block.
/sys/class/graphics/fb1/cec_logical_addr
Read: Print CEC logical address
Write: Set CEC logical address which is used for
addressing CEC messages to and from MSM
/sys/class/graphics/fb1/cec_rd_frame
Read: Read rcvd CEC message from message queue.
If queue is empty -EBUSY.
If CEC block is disabled -EPERM.
Write: N/A
/sys/class/graphics/fb1/cec_wr_frame
Read: N/A
Write: Write to send CEC message.
If CEC line arbitration fault/no ack -EINVAL.
If CEC block is disabled -EPERM.
Change-Id: I62ce418b7f1e887550319081cc4b78fbd564a6f5
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>
diff --git a/drivers/video/msm/Kconfig b/drivers/video/msm/Kconfig
index 7fd603d..c33919d 100644
--- a/drivers/video/msm/Kconfig
+++ b/drivers/video/msm/Kconfig
@@ -602,6 +602,14 @@
Support for HDCP mode for MSM HDMI 1080p Panel
Choose to enable HDCP
+config FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+ depends on FB_MSM_HDMI_MSM_PANEL
+ bool "Enable CEC"
+ default n
+ ---help---
+ Support for HDMI CEC Feature
+ Choose to enable CEC
+
choice
depends on (FB_MSM_MDP22 || FB_MSM_MDP31 || FB_MSM_MDP40)
prompt "TVOut Region"
diff --git a/drivers/video/msm/external_common.c b/drivers/video/msm/external_common.c
index a499a62..1d87de6 100644
--- a/drivers/video/msm/external_common.c
+++ b/drivers/video/msm/external_common.c
@@ -18,7 +18,9 @@
/* #define DEBUG */
#define DEV_DBG_PREFIX "EXT_COMMON: "
+/* #define CEC_COMPLIANCE_TESTING */
#include "msm_fb.h"
+#include "hdmi_msm.h"
#include "external_common.h"
struct external_common_state_type *external_common_state;
@@ -26,6 +28,7 @@
DEFINE_MUTEX(external_common_state_hpd_mutex);
EXPORT_SYMBOL(external_common_state_hpd_mutex);
+
static int atoi(const char *name)
{
int val = 0;
@@ -307,6 +310,132 @@
return ret;
}
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+/*
+ * This interface for CEC feature is defined to suit
+ * the current requirements. However, the actual functionality is
+ * added to accommodate different interfaces
+ */
+static ssize_t hdmi_msm_rda_cec(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ /* 0x028C CEC_CTRL */
+ ssize_t ret = snprintf(buf, PAGE_SIZE, "%d\n",
+ (HDMI_INP(0x028C) & BIT(0)));
+ return ret;
+}
+
+static ssize_t hdmi_msm_wta_cec(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ ssize_t ret = strnlen(buf, PAGE_SIZE);
+ int cec = atoi(buf);
+
+ if (cec != 0) {
+ mutex_lock(&hdmi_msm_state_mutex);
+ hdmi_msm_state->cec_enabled = true;
+ hdmi_msm_state->cec_logical_addr = 4;
+ mutex_unlock(&hdmi_msm_state_mutex);
+ hdmi_msm_cec_init();
+ hdmi_msm_cec_write_logical_addr(
+ hdmi_msm_state->cec_logical_addr);
+ DEV_DBG("CEC enabled\n");
+ } else {
+ mutex_lock(&hdmi_msm_state_mutex);
+ hdmi_msm_state->cec_enabled = false;
+ hdmi_msm_state->cec_logical_addr = 15;
+ mutex_unlock(&hdmi_msm_state_mutex);
+ hdmi_msm_cec_write_logical_addr(
+ hdmi_msm_state->cec_logical_addr);
+ /* 0x028C CEC_CTRL */
+ HDMI_OUTP(0x028C, 0);
+ DEV_DBG("CEC disabled\n");
+ }
+ return ret;
+}
+
+static ssize_t hdmi_msm_rda_cec_logical_addr(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ ssize_t ret;
+
+ mutex_lock(&hdmi_msm_state_mutex);
+ ret = snprintf(buf, PAGE_SIZE, "%d\n",
+ hdmi_msm_state->cec_logical_addr);
+ mutex_unlock(&hdmi_msm_state_mutex);
+ return ret;
+}
+
+static ssize_t hdmi_msm_wta_cec_logical_addr(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+
+#ifdef CEC_COMPLIANCE_TESTING
+ /*
+ * Only for testing
+ */
+ hdmi_msm_cec_one_touch_play();
+ return 0;
+#else
+ ssize_t ret = strnlen(buf, PAGE_SIZE);
+ int logical_addr = atoi(buf);
+
+ if (logical_addr < 0 || logical_addr > 15)
+ return -EINVAL;
+
+ mutex_lock(&hdmi_msm_state_mutex);
+ hdmi_msm_state->cec_logical_addr = logical_addr;
+ mutex_unlock(&hdmi_msm_state_mutex);
+
+ hdmi_msm_cec_write_logical_addr(logical_addr);
+
+ return ret;
+#endif
+}
+
+static ssize_t hdmi_msm_rda_cec_frame(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ mutex_lock(&hdmi_msm_state_mutex);
+ if (hdmi_msm_state->cec_queue_rd == hdmi_msm_state->cec_queue_wr
+ && !hdmi_msm_state->cec_queue_full) {
+ mutex_unlock(&hdmi_msm_state_mutex);
+ DEV_ERR("CEC message queue is empty\n");
+ return -EBUSY;
+ }
+ memcpy(buf, hdmi_msm_state->cec_queue_rd++,
+ sizeof(struct hdmi_msm_cec_msg));
+ hdmi_msm_state->cec_queue_full = false;
+ if (hdmi_msm_state->cec_queue_rd == CEC_QUEUE_END)
+ hdmi_msm_state->cec_queue_rd = hdmi_msm_state->cec_queue_start;
+ mutex_unlock(&hdmi_msm_state_mutex);
+
+ return sizeof(struct hdmi_msm_cec_msg);
+}
+
+static ssize_t hdmi_msm_wta_cec_frame(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int retry = ((struct hdmi_msm_cec_msg *) buf)->retransmit;
+
+ if (retry > 15)
+ retry = 15;
+ while (1) {
+ hdmi_msm_cec_msg_send((struct hdmi_msm_cec_msg *) buf);
+ if (hdmi_msm_state->cec_frame_wr_status
+ & CEC_STATUS_WR_ERROR && retry--)
+ msleep(360);
+ else
+ break;
+ }
+
+ if (hdmi_msm_state->cec_frame_wr_status & CEC_STATUS_WR_DONE)
+ return sizeof(struct hdmi_msm_cec_msg);
+ else
+ return -EINVAL;
+}
+#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT */
+
static ssize_t hdmi_common_rda_3d_present(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -364,6 +493,23 @@
}
#endif
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+static DEVICE_ATTR(cec, S_IRUGO | S_IWUSR,
+ hdmi_msm_rda_cec,
+ hdmi_msm_wta_cec);
+
+static DEVICE_ATTR(cec_logical_addr, S_IRUGO | S_IWUSR,
+ hdmi_msm_rda_cec_logical_addr,
+ hdmi_msm_wta_cec_logical_addr);
+
+static DEVICE_ATTR(cec_rd_frame, S_IRUGO,
+ hdmi_msm_rda_cec_frame, NULL);
+
+static DEVICE_ATTR(cec_wr_frame, S_IWUSR,
+ NULL, hdmi_msm_wta_cec_frame);
+#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT */
+
+
static ssize_t external_common_rda_video_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -456,6 +602,12 @@
#ifdef CONFIG_FB_MSM_HDMI_3D
&dev_attr_format_3d.attr,
#endif
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+ &dev_attr_cec.attr,
+ &dev_attr_cec_logical_addr.attr,
+ &dev_attr_cec_rd_frame.attr,
+ &dev_attr_cec_wr_frame.attr,
+#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT */
NULL,
};
static struct attribute_group external_common_fs_attr_group = {
diff --git a/drivers/video/msm/external_common.h b/drivers/video/msm/external_common.h
index 30a8f48..f629d0f 100644
--- a/drivers/video/msm/external_common.h
+++ b/drivers/video/msm/external_common.h
@@ -225,6 +225,7 @@
/* The external interface driver needs to initialize the common state. */
extern struct external_common_state_type *external_common_state;
extern struct mutex external_common_state_hpd_mutex;
+extern struct mutex hdmi_msm_state_mutex;
#ifdef CONFIG_FB_MSM_HDMI_COMMON
#define VFRMT_NOT_SUPPORTED(VFRMT) \
diff --git a/drivers/video/msm/hdmi_msm.c b/drivers/video/msm/hdmi_msm.c
index 7eca334..63c2147 100644
--- a/drivers/video/msm/hdmi_msm.c
+++ b/drivers/video/msm/hdmi_msm.c
@@ -15,6 +15,9 @@
#define DEV_DBG_PREFIX "HDMI: "
/* #define REG_DUMP */
+#define CEC_MSG_PRINT
+/* #define CEC_COMPLIANCE_TESTING */
+
#include <linux/types.h>
#include <linux/bitops.h>
#include <linux/clk.h>
@@ -49,7 +52,8 @@
struct workqueue_struct *hdmi_work_queue;
struct hdmi_msm_state_type *hdmi_msm_state;
-static DEFINE_MUTEX(hdmi_msm_state_mutex);
+DEFINE_MUTEX(hdmi_msm_state_mutex);
+EXPORT_SYMBOL(hdmi_msm_state_mutex);
static DEFINE_MUTEX(hdcp_auth_state_mutex);
#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_HDCP_SUPPORT
@@ -58,6 +62,478 @@
static inline void hdmi_msm_hdcp_enable(void) {}
#endif
+static void hdmi_msm_turn_on(void);
+static int hdmi_msm_audio_off(void);
+static int hdmi_msm_read_edid(void);
+static void hdmi_msm_hpd_off(void);
+
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+
+#define HDMI_MSM_CEC_REFTIMER_REFTIMER_ENABLE BIT(16)
+#define HDMI_MSM_CEC_REFTIMER_REFTIMER(___t) (((___t)&0xFFFF) << 0)
+
+#define HDMI_MSM_CEC_TIME_SIGNAL_FREE_TIME(___t) (((___t)&0x1FF) << 7)
+#define HDMI_MSM_CEC_TIME_ENABLE BIT(0)
+
+#define HDMI_MSM_CEC_ADDR_LOGICAL_ADDR(___la) (((___la)&0xFF) << 0)
+
+#define HDMI_MSM_CEC_CTRL_LINE_OE BIT(9)
+#define HDMI_MSM_CEC_CTRL_FRAME_SIZE(___sz) (((___sz)&0x1F) << 4)
+#define HDMI_MSM_CEC_CTRL_SOFT_RESET BIT(2)
+#define HDMI_MSM_CEC_CTRL_SEND_TRIG BIT(1)
+#define HDMI_MSM_CEC_CTRL_ENABLE BIT(0)
+
+#define HDMI_MSM_CEC_INT_FRAME_RD_DONE_MASK BIT(7)
+#define HDMI_MSM_CEC_INT_FRAME_RD_DONE_ACK BIT(6)
+#define HDMI_MSM_CEC_INT_FRAME_RD_DONE_INT BIT(6)
+#define HDMI_MSM_CEC_INT_MONITOR_MASK BIT(5)
+#define HDMI_MSM_CEC_INT_MONITOR_ACK BIT(4)
+#define HDMI_MSM_CEC_INT_MONITOR_INT BIT(4)
+#define HDMI_MSM_CEC_INT_FRAME_ERROR_MASK BIT(3)
+#define HDMI_MSM_CEC_INT_FRAME_ERROR_ACK BIT(2)
+#define HDMI_MSM_CEC_INT_FRAME_ERROR_INT BIT(2)
+#define HDMI_MSM_CEC_INT_FRAME_WR_DONE_MASK BIT(1)
+#define HDMI_MSM_CEC_INT_FRAME_WR_DONE_ACK BIT(0)
+#define HDMI_MSM_CEC_INT_FRAME_WR_DONE_INT BIT(0)
+
+#define HDMI_MSM_CEC_FRAME_WR_SUCCESS(___st) (((___st)&0xF) ==\
+ (HDMI_MSM_CEC_INT_FRAME_WR_DONE_INT &&\
+ HDMI_MSM_CEC_INT_FRAME_WR_DONE_MASK &&\
+ (HDMI_MSM_CEC_INT_FRAME_ERROR_MASK &&\
+ !(HDMI_MSM_CEC_INT_FRAME_ERROR_INT))))
+
+#define HDMI_MSM_CEC_RETRANSMIT_NUM(___num) (((___num)&0xF) << 4)
+#define HDMI_MSM_CEC_RETRANSMIT_ENABLE BIT(0)
+
+#define HDMI_MSM_CEC_WR_DATA_DATA(___d) (((___d)&0xFF) << 8)
+
+
+void hdmi_msm_cec_init(void)
+{
+ /* 0x02A8 CEC_REFTIMER */
+ HDMI_OUTP(0x02A8,
+ HDMI_MSM_CEC_REFTIMER_REFTIMER_ENABLE
+ | HDMI_MSM_CEC_REFTIMER_REFTIMER(27 * 50)
+ );
+
+ /* 0x02A4 CEC_TIME */
+ HDMI_OUTP(0x02A4,
+ HDMI_MSM_CEC_TIME_SIGNAL_FREE_TIME(350)
+ | HDMI_MSM_CEC_TIME_ENABLE
+ );
+
+ /*
+ * 0x02A0 CEC_ADDR
+ * Starting with a default address of 4
+ */
+ HDMI_OUTP(0x02A0, HDMI_MSM_CEC_ADDR_LOGICAL_ADDR(4));
+
+ /* 0x028C CEC_CTRL */
+ HDMI_OUTP(0x028C, HDMI_MSM_CEC_CTRL_ENABLE);
+
+ /* 0x029C CEC_INT */
+ /* Enable CEC interrupts */
+ HDMI_OUTP(0x029C, \
+ HDMI_MSM_CEC_INT_FRAME_WR_DONE_MASK \
+ | HDMI_MSM_CEC_INT_FRAME_ERROR_MASK \
+ | HDMI_MSM_CEC_INT_MONITOR_MASK \
+ | HDMI_MSM_CEC_INT_FRAME_RD_DONE_MASK);
+
+ HDMI_OUTP(0x02B0, 0x7FF << 4 | 1);
+
+ /*
+ * Slight adjustment to logic 1 low periods on read,
+ * CEC Test 8.2-3 was failing, 8 for the
+ * BIT_1_ERR_RANGE_HI = 8 => 750us, the test used 775us,
+ * so increased this to 9 which => 800us.
+ */
+ HDMI_OUTP(0x02E0, 0x889788);
+
+ /*
+ * Slight adjustment to logic 0 low period on write
+ */
+ HDMI_OUTP(0x02DC, 0x8888A888);
+
+ /*
+ * Enable Signal Free Time counter and set to 7 bit periods
+ */
+ HDMI_OUTP(0x02A4, 0x1 | (7 * 0x30) << 7);
+
+}
+
+void hdmi_msm_cec_write_logical_addr(int addr)
+{
+ /* 0x02A0 CEC_ADDR
+ * LOGICAL_ADDR 7:0 NUM
+ */
+ HDMI_OUTP(0x02A0, addr & 0xFF);
+}
+
+void hdmi_msm_dump_cec_msg(struct hdmi_msm_cec_msg *msg)
+{
+#ifdef CEC_MSG_PRINT
+ int i;
+ DEV_DBG("sender_id : %d", msg->sender_id);
+ DEV_DBG("recvr_id : %d", msg->recvr_id);
+ if (msg->frame_size < 2) {
+ DEV_DBG("polling message");
+ return;
+ }
+ DEV_DBG("opcode : %02x", msg->opcode);
+ for (i = 0; i < msg->frame_size - 2; i++)
+ DEV_DBG("operand(%2d) : %02x", i + 1, msg->operand[i]);
+#endif /* CEC_MSG_PRINT */
+}
+
+void hdmi_msm_cec_msg_send(struct hdmi_msm_cec_msg *msg)
+{
+ int i;
+ uint32 timeout_count = 1;
+ int retry = 10;
+
+ boolean frameType = (msg->recvr_id == 15 ? BIT(0) : 0);
+
+ INIT_COMPLETION(hdmi_msm_state->cec_frame_wr_done);
+ hdmi_msm_state->cec_frame_wr_status = 0;
+
+ /* 0x0294 HDMI_MSM_CEC_RETRANSMIT */
+ HDMI_OUTP(0x0294,
+ HDMI_MSM_CEC_RETRANSMIT_NUM(msg->retransmit)
+ | (msg->retransmit > 0) ? HDMI_MSM_CEC_RETRANSMIT_ENABLE : 0);
+
+ /* 0x028C CEC_CTRL */
+ HDMI_OUTP(0x028C, 0x1 | msg->frame_size << 4);
+
+ /* 0x0290 CEC_WR_DATA */
+
+ /* header block */
+ HDMI_OUTP(0x0290,
+ HDMI_MSM_CEC_WR_DATA_DATA(msg->sender_id << 4 | msg->recvr_id)
+ | frameType);
+
+ /* data block 0 : opcode */
+ HDMI_OUTP(0x0290,
+ HDMI_MSM_CEC_WR_DATA_DATA(msg->frame_size < 2 ? 0 : msg->opcode)
+ | frameType);
+
+ /* data block 1-14 : operand 0-13 */
+ for (i = 0; i < msg->frame_size - 1; i++)
+ HDMI_OUTP(0x0290,
+ HDMI_MSM_CEC_WR_DATA_DATA(msg->operand[i])
+ | (msg->recvr_id == 15 ? BIT(0) : 0));
+
+ for (; i < 14; i++)
+ HDMI_OUTP(0x0290,
+ HDMI_MSM_CEC_WR_DATA_DATA(0)
+ | (msg->recvr_id == 15 ? BIT(0) : 0));
+
+ while ((HDMI_INP(0x0298) & 1) && retry--) {
+ DEV_DBG("CEC line is busy(%d)\n", retry);
+ schedule();
+ }
+
+ /* 0x028C CEC_CTRL */
+ HDMI_OUTP(0x028C,
+ HDMI_MSM_CEC_CTRL_LINE_OE
+ | HDMI_MSM_CEC_CTRL_FRAME_SIZE(msg->frame_size)
+ | HDMI_MSM_CEC_CTRL_SEND_TRIG
+ | HDMI_MSM_CEC_CTRL_ENABLE);
+
+ timeout_count = wait_for_completion_interruptible_timeout(
+ &hdmi_msm_state->cec_frame_wr_done, HZ);
+
+ if (!timeout_count) {
+ hdmi_msm_state->cec_frame_wr_status |= CEC_STATUS_WR_TMOUT;
+ DEV_ERR("%s: timedout", __func__);
+ hdmi_msm_dump_cec_msg(msg);
+ } else {
+ DEV_DBG("CEC write frame done (frame len=%d)",
+ msg->frame_size);
+ hdmi_msm_dump_cec_msg(msg);
+ }
+}
+
+void hdmi_msm_cec_msg_recv(void)
+{
+ uint32 data;
+ int i;
+#ifdef CEC_COMPLIANCE_TESTING
+ struct hdmi_msm_cec_msg temp_msg;
+#endif
+ mutex_lock(&hdmi_msm_state_mutex);
+ if (hdmi_msm_state->cec_queue_wr == hdmi_msm_state->cec_queue_rd
+ && hdmi_msm_state->cec_queue_full) {
+ mutex_unlock(&hdmi_msm_state_mutex);
+ DEV_ERR("CEC message queue is overflowing\n");
+#ifdef CEC_COMPLIANCE_TESTING
+ /*
+ * Without CEC daemon:
+ * Compliance tests fail once the queue gets filled up.
+ * so reset the pointers to the start of the queue.
+ */
+ hdmi_msm_state->cec_queue_wr = hdmi_msm_state->cec_queue_start;
+ hdmi_msm_state->cec_queue_rd = hdmi_msm_state->cec_queue_start;
+ hdmi_msm_state->cec_queue_full = false;
+#else
+ return;
+#endif
+ }
+ if (hdmi_msm_state->cec_queue_wr == NULL) {
+ DEV_ERR("%s: wp is NULL\n", __func__);
+ return;
+ }
+ mutex_unlock(&hdmi_msm_state_mutex);
+
+ /* 0x02AC CEC_RD_DATA */
+ data = HDMI_INP(0x02AC);
+
+ hdmi_msm_state->cec_queue_wr->sender_id = (data & 0xF0) >> 4;
+ hdmi_msm_state->cec_queue_wr->recvr_id = (data & 0x0F);
+ hdmi_msm_state->cec_queue_wr->frame_size = (data & 0x1F00) >> 8;
+ DEV_DBG("Recvd init=[%u] dest=[%u] size=[%u]\n",
+ hdmi_msm_state->cec_queue_wr->sender_id,
+ hdmi_msm_state->cec_queue_wr->recvr_id,
+ hdmi_msm_state->cec_queue_wr->frame_size);
+
+ if (hdmi_msm_state->cec_queue_wr->frame_size < 1) {
+ DEV_ERR("%s: invalid message (frame length = %d)",
+ __func__, hdmi_msm_state->cec_queue_wr->frame_size);
+ return;
+ } else if (hdmi_msm_state->cec_queue_wr->frame_size == 1) {
+ DEV_DBG("%s: polling message (dest[%x] <- init[%x])",
+ __func__,
+ hdmi_msm_state->cec_queue_wr->recvr_id,
+ hdmi_msm_state->cec_queue_wr->sender_id);
+ return;
+ }
+
+ /* data block 0 : opcode */
+ data = HDMI_INP(0x02AC);
+ hdmi_msm_state->cec_queue_wr->opcode = data & 0xFF;
+
+ /* data block 1-14 : operand 0-13 */
+ for (i = 0; i < hdmi_msm_state->cec_queue_wr->frame_size - 2; i++) {
+ data = HDMI_INP(0x02AC);
+ hdmi_msm_state->cec_queue_wr->operand[i] = data & 0xFF;
+ }
+
+ for (; i < 14; i++)
+ hdmi_msm_state->cec_queue_wr->operand[i] = 0;
+
+ DEV_DBG("CEC read frame done\n");
+ DEV_DBG("=======================================\n");
+ hdmi_msm_dump_cec_msg(hdmi_msm_state->cec_queue_wr);
+ DEV_DBG("=======================================\n");
+
+#ifdef CEC_COMPLIANCE_TESTING
+ switch (hdmi_msm_state->cec_queue_wr->opcode) {
+ case 0x64:
+ /* Set OSD String */
+ DEV_INFO("Recvd OSD Str=[%x]\n",\
+ hdmi_msm_state->cec_queue_wr->operand[3]);
+ break;
+ case 0x83:
+ /* Give Phy Addr */
+ DEV_INFO("Recvd a Give Phy Addr cmd\n");
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ /* Setup a frame for sending out phy addr */
+ temp_msg.sender_id = 0x4;
+
+ /* Broadcast */
+ temp_msg.recvr_id = 0xf;
+ temp_msg.opcode = 0x84;
+ i = 0;
+ temp_msg.operand[i++] = 0x10;
+ temp_msg.operand[i++] = 0x00;
+ temp_msg.operand[i++] = 0x04;
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+ break;
+ case 0xFF:
+ /* Abort */
+ DEV_INFO("Recvd an abort cmd 0xFF\n");
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+ temp_msg.recvr_id = hdmi_msm_state->cec_queue_wr->sender_id;
+ i = 0;
+
+ /*feature abort */
+ temp_msg.opcode = 0x00;
+ temp_msg.operand[i++] =
+ hdmi_msm_state->cec_queue_wr->opcode;
+
+ /*reason for abort = "Refused" */
+ temp_msg.operand[i++] = 0x04;
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_dump_cec_msg(&temp_msg);
+ hdmi_msm_cec_msg_send(&temp_msg);
+ break;
+ case 0x046:
+ /* Give OSD name */
+ DEV_INFO("Recvd cmd 0x046\n");
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+ temp_msg.recvr_id = hdmi_msm_state->cec_queue_wr->sender_id;
+ i = 0;
+
+ /* OSD Name */
+ temp_msg.opcode = 0x47;
+
+ /* Display control byte */
+ temp_msg.operand[i++] = 0x00;
+ temp_msg.operand[i++] = 'H';
+ temp_msg.operand[i++] = 'e';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'o';
+ temp_msg.operand[i++] = ' ';
+ temp_msg.operand[i++] = 'W';
+ temp_msg.operand[i++] = 'o';
+ temp_msg.operand[i++] = 'r';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'd';
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+ break;
+ case 0x08F:
+ /* Give Device Power status */
+ DEV_INFO("Recvd a Power status message\n");
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+ temp_msg.recvr_id = hdmi_msm_state->cec_queue_wr->sender_id;
+ i = 0;
+
+ /* OSD String */
+ temp_msg.opcode = 0x90;
+ temp_msg.operand[i++] = 'H';
+ temp_msg.operand[i++] = 'e';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'o';
+ temp_msg.operand[i++] = ' ';
+ temp_msg.operand[i++] = 'W';
+ temp_msg.operand[i++] = 'o';
+ temp_msg.operand[i++] = 'r';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'd';
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+ break;
+ case 0x080:
+ /* Routing Change cmd */
+ case 0x086:
+ /* Set Stream Path */
+ DEV_INFO("Recvd Set Stream\n");
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+
+ /*Broadcast this message*/
+ temp_msg.recvr_id = 0xf;
+ i = 0;
+ temp_msg.opcode = 0x82; /* Active Source */
+ temp_msg.operand[i++] = 0x10;
+ temp_msg.operand[i++] = 0x00;
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+
+ /*
+ * sending <Image View On> message
+ */
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+ temp_msg.recvr_id = hdmi_msm_state->cec_queue_wr->sender_id;
+ i = 0;
+ /* opcode for Image View On */
+ temp_msg.opcode = 0x04;
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+ break;
+ default:
+ DEV_INFO("Recvd an unknown cmd = [%u]\n",
+ hdmi_msm_state->cec_queue_wr->opcode);
+#ifdef __SEND_ABORT__
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+ temp_msg.recvr_id = hdmi_msm_state->cec_queue_wr->sender_id;
+ i = 0;
+ /* opcode for feature abort */
+ temp_msg.opcode = 0x00;
+ temp_msg.operand[i++] =
+ hdmi_msm_state->cec_queue_wr->opcode;
+ /*reason for abort = "Unrecognized opcode" */
+ temp_msg.operand[i++] = 0x00;
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+ break;
+#else
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+ temp_msg.recvr_id = hdmi_msm_state->cec_queue_wr->sender_id;
+ i = 0;
+ /* OSD String */
+ temp_msg.opcode = 0x64;
+ temp_msg.operand[i++] = 0x0;
+ temp_msg.operand[i++] = 'H';
+ temp_msg.operand[i++] = 'e';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'o';
+ temp_msg.operand[i++] = ' ';
+ temp_msg.operand[i++] = 'W';
+ temp_msg.operand[i++] = 'o';
+ temp_msg.operand[i++] = 'r';
+ temp_msg.operand[i++] = 'l';
+ temp_msg.operand[i++] = 'd';
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+ break;
+#endif /* __SEND_ABORT__ */
+ }
+
+#endif /* CEC_COMPLIANCE_TESTING */
+ mutex_lock(&hdmi_msm_state_mutex);
+ hdmi_msm_state->cec_queue_wr++;
+ if (hdmi_msm_state->cec_queue_wr == CEC_QUEUE_END)
+ hdmi_msm_state->cec_queue_wr = hdmi_msm_state->cec_queue_start;
+ if (hdmi_msm_state->cec_queue_wr == hdmi_msm_state->cec_queue_rd)
+ hdmi_msm_state->cec_queue_full = true;
+ mutex_unlock(&hdmi_msm_state_mutex);
+ DEV_DBG("Exiting %s()\n", __func__);
+}
+
+void hdmi_msm_cec_one_touch_play(void)
+{
+ struct hdmi_msm_cec_msg temp_msg;
+ uint32 i = 0;
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+ /*
+ * Broadcast this message
+ */
+ temp_msg.recvr_id = 0xf;
+ i = 0;
+ /* Active Source */
+ temp_msg.opcode = 0x82;
+ temp_msg.operand[i++] = 0x10;
+ temp_msg.operand[i++] = 0x00;
+ /*temp_msg.operand[i++] = 0x04;*/
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+ /*
+ * sending <Image View On> message
+ */
+ memset(&temp_msg, 0x00, sizeof(struct hdmi_msm_cec_msg));
+ temp_msg.sender_id = 0x4;
+ temp_msg.recvr_id = hdmi_msm_state->cec_queue_wr->sender_id;
+ i = 0;
+ /* Image View On */
+ temp_msg.opcode = 0x04;
+ temp_msg.frame_size = i + 2;
+ hdmi_msm_cec_msg_send(&temp_msg);
+
+}
+#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT */
+
uint32 hdmi_msm_get_io_base(void)
{
return (uint32)MSM_HDMI_BASE;
@@ -397,6 +873,9 @@
{
uint32 hpd_int_status;
uint32 hpd_int_ctrl;
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+ uint32 cec_intr_status;
+#endif
uint32 ddc_int_ctrl;
uint32 audio_int_val;
#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_HDCP_SUPPORT
@@ -601,8 +1080,55 @@
}
#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_HDCP_SUPPORT */
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+ /* Process CEC Interrupt */
+ /* HDMI_MSM_CEC_INT[0x029C] */
+ cec_intr_status = HDMI_INP_ND(0x029C);
+
+ DEV_DBG("cec interrupt status is [%u]\n", cec_intr_status);
+
+ if (HDMI_MSM_CEC_FRAME_WR_SUCCESS(cec_intr_status)) {
+ DEV_DBG("CEC_IRQ_FRAME_WR_DONE\n");
+ HDMI_OUTP(0x029C, cec_intr_status |
+ HDMI_MSM_CEC_INT_FRAME_WR_DONE_ACK);
+ mutex_lock(&hdmi_msm_state_mutex);
+ hdmi_msm_state->cec_frame_wr_status |= CEC_STATUS_WR_DONE;
+ mutex_unlock(&hdmi_msm_state_mutex);
+ complete(&hdmi_msm_state->cec_frame_wr_done);
+ return IRQ_HANDLED;
+ }
+ if ((cec_intr_status & (1 << 2)) && (cec_intr_status & (1 << 3))) {
+ DEV_DBG("CEC_IRQ_FRAME_ERROR\n");
+ /* Toggle CEC hardware FSM */
+ HDMI_OUTP(0x028C, 0x0);
+ HDMI_OUTP(0x028C, HDMI_MSM_CEC_CTRL_ENABLE);
+ HDMI_OUTP(0x029C, cec_intr_status);
+ mutex_lock(&hdmi_msm_state_mutex);
+ hdmi_msm_state->cec_frame_wr_status |= CEC_STATUS_WR_ERROR;
+ mutex_unlock(&hdmi_msm_state_mutex);
+ complete(&hdmi_msm_state->cec_frame_wr_done);
+ return IRQ_HANDLED;
+ }
+
+ if ((cec_intr_status & (1 << 4)) && (cec_intr_status & (1 << 5)))
+ DEV_DBG("CEC_IRQ_MONITOR\n");
+
+ if ((cec_intr_status & (1 << 6)) && (cec_intr_status & (1 << 7))) {
+ DEV_DBG("CEC_IRQ_FRAME_RD_DONE\n");
+ HDMI_OUTP(0x029C, cec_intr_status |
+ HDMI_MSM_CEC_INT_FRAME_RD_DONE_ACK);
+ hdmi_msm_cec_msg_recv();
+
+ /* Toggle CEC hardware FSM */
+ HDMI_OUTP(0x028C, 0x0);
+ HDMI_OUTP(0x028C, HDMI_MSM_CEC_CTRL_ENABLE);
+
+ return IRQ_HANDLED;
+ }
+#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT */
+
DEV_DBG("%s: HPD<Ctrl=%04x, State=%04x>, ddc_int_ctrl=%04x, "
- "aud_int=%04x, cec_int=%04x\n", __func__, hpd_int_ctrl,
+ "aud_int=%04x, cec_intr_status=%04x\n", __func__, hpd_int_ctrl,
hpd_int_status, ddc_int_ctrl, audio_int_val,
HDMI_INP_ND(0x029C));
@@ -3130,6 +3656,17 @@
hdmi_msm_state->reauth = FALSE ;
}
#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_HDCP_SUPPORT */
+
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+ /* re-initialize CEC if enabled */
+ mutex_lock(&hdmi_msm_state_mutex);
+ if (hdmi_msm_state->cec_enabled == true) {
+ hdmi_msm_cec_init();
+ hdmi_msm_cec_write_logical_addr(
+ hdmi_msm_state->cec_logical_addr);
+ }
+ mutex_unlock(&hdmi_msm_state_mutex);
+#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT */
DEV_INFO("HDMI Core: Initialized\n");
}
@@ -3187,6 +3724,7 @@
hdmi_msm_set_mode(FALSE);
HDMI_OUTP_ND(0x0308, 0x7F); /*0b01111111*/
hdmi_msm_state->hpd_initialized = FALSE;
+ hdmi_msm_state->pd->cec_power(0);
hdmi_msm_state->pd->enable_5v(0);
hdmi_msm_state->pd->core_power(0, 1);
hdmi_msm_clk(0);
@@ -3208,6 +3746,7 @@
hdmi_msm_clk(1);
hdmi_msm_state->pd->core_power(1, 1);
hdmi_msm_state->pd->enable_5v(1);
+ hdmi_msm_state->pd->cec_power(1);
hdmi_msm_dump_regs("HDMI-INIT: ");
hdmi_msm_set_mode(FALSE);
@@ -3455,6 +3994,12 @@
goto error;
}
+ if (!hdmi_msm_state->pd->cec_power) {
+ DEV_ERR("Init FAILED: cec_power function missing\n");
+ rc = -ENODEV;
+ goto error;
+ }
+
rc = request_threaded_irq(hdmi_msm_state->irq, NULL, &hdmi_msm_isr,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "hdmi_msm_isr", NULL);
if (rc) {
@@ -3686,6 +4231,21 @@
external_common_state->switch_3d = hdmi_msm_switch_3d;
#endif
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+ hdmi_msm_state->cec_queue_start =
+ kzalloc(sizeof(struct hdmi_msm_cec_msg)*CEC_QUEUE_SIZE,
+ GFP_KERNEL);
+ if (!hdmi_msm_state->cec_queue_start) {
+ pr_err("hdmi_msm_init FAILED: CEC queue out of memory\n");
+ rc = -ENOMEM;
+ goto init_exit;
+ }
+
+ hdmi_msm_state->cec_queue_wr = hdmi_msm_state->cec_queue_start;
+ hdmi_msm_state->cec_queue_rd = hdmi_msm_state->cec_queue_start;
+ hdmi_msm_state->cec_queue_full = false;
+#endif
+
/*
* Create your work queue
* allocs and returns ptr
@@ -3710,6 +4270,10 @@
INIT_WORK(&hdmi_msm_state->hdcp_work, hdmi_msm_hdcp_work);
#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_HDCP_SUPPORT */
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+ init_completion(&hdmi_msm_state->cec_frame_wr_done);
+#endif
+
rc = platform_device_register(&this_device);
if (rc) {
pr_err("hdmi_msm_init FAILED: platform_device_register rc=%d\n",
diff --git a/drivers/video/msm/hdmi_msm.h b/drivers/video/msm/hdmi_msm.h
index 2f44b6d..6d19d157 100644
--- a/drivers/video/msm/hdmi_msm.h
+++ b/drivers/video/msm/hdmi_msm.h
@@ -33,7 +33,22 @@
#define HDMI_INP(offset) inpdw(MSM_HDMI_BASE+(offset))
#endif
+
+/*
+ * Ref. HDMI 1.4a
+ * Supplement-1 CEC Section 6, 7
+ */
+struct hdmi_msm_cec_msg {
+ uint8 sender_id;
+ uint8 recvr_id;
+ uint8 opcode;
+ uint8 operand[15];
+ uint8 frame_size;
+ uint8 retransmit;
+};
+
#define QFPROM_BASE ((uint32)hdmi_msm_state->qfprom_io)
+#define HDMI_BASE ((uint32)hdmi_msm_state->hdmi_io)
struct hdmi_msm_state_type {
boolean panel_power_on;
@@ -58,6 +73,23 @@
struct timer_list hdcp_timer;
#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_HDCP_SUPPORT */
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+ boolean cec_enabled;
+ int cec_logical_addr;
+ struct completion cec_frame_wr_done;
+#define CEC_STATUS_WR_ERROR 0x0001
+#define CEC_STATUS_WR_DONE 0x0002
+#define CEC_STATUS_WR_TMOUT 0x0004
+ uint32 cec_frame_wr_status;
+
+ struct hdmi_msm_cec_msg *cec_queue_start;
+ struct hdmi_msm_cec_msg *cec_queue_wr;
+ struct hdmi_msm_cec_msg *cec_queue_rd;
+ boolean cec_queue_full;
+#define CEC_QUEUE_SIZE 16
+#define CEC_QUEUE_END (hdmi_msm_state->cec_queue_start + CEC_QUEUE_SIZE)
+#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT */
+
int irq;
struct msm_hdmi_platform_data *pd;
struct clk *hdmi_app_clk;
@@ -84,4 +116,12 @@
void hdmi_msm_phy_status_poll(void);
#endif
+#ifdef CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT
+void hdmi_msm_cec_init(void);
+void hdmi_msm_cec_write_logical_addr(int addr);
+void hdmi_msm_cec_msg_recv(void);
+void hdmi_msm_cec_one_touch_play(void);
+void hdmi_msm_cec_msg_send(struct hdmi_msm_cec_msg *msg);
+#endif /* CONFIG_FB_MSM_HDMI_MSM_PANEL_CEC_SUPPORT */
+
#endif /* __HDMI_MSM_H__ */