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hdmitx: replace I2C_REACTIVE with I2C_RESET logic [1/1]

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PD#OTT-3716

Problem:
In GX, there is the I2C_REACTIVE method to avoid the I2C hangup
issue. But it is fixed in G12, so need replace it.

Solution:
Replace I2C_REACTIVE with I2C_RESET logic

Verify:
G12/U212

Change-Id: I1ca2f77a213db0d7de067745b3701816b7c85c27
Signed-off-by: Zongdong Jiao <zongdong.jiao@amlogic.com>
This commit is contained in:
Zongdong Jiao
2019-05-23 20:59:32 +08:00
committed by Chris KIM
parent 575ea2db30
commit d7cedda7f5
3 changed files with 17 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c
View File

@@ -3816,7 +3816,8 @@ static void hdmitx_hpd_plugin_handler(struct work_struct *work)
}
mutex_lock(&setclk_mutex);
pr_info(SYS "plugin\n");
hdev->HWOp.CntlMisc(hdev, MISC_I2C_REACTIVE, 0);
if (hdev->chip_type >= MESON_CPU_ID_G12A)
hdev->HWOp.CntlMisc(hdev, MISC_I2C_RESET, 0);
hdev->hdmitx_event &= ~HDMI_TX_HPD_PLUGIN;
/* start reading E-EDID */
if (hdev->repeater_tx)
@@ -3845,6 +3846,8 @@ static void hdmitx_hpd_plugin_handler(struct work_struct *work)
}
mutex_lock(&getedid_mutex);
if (hdev->chip_type < MESON_CPU_ID_G12A)
hdev->HWOp.CntlMisc(hdev, MISC_I2C_REACTIVE, 0);
mutex_unlock(&getedid_mutex);
if (hdev->repeater_tx) {
if (check_fbc_special(&hdev->EDID_buf[0])

13
drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
View File

@@ -4445,6 +4445,7 @@ static void hdmitx_getediddata(unsigned char *des, unsigned char *src)
/*
* Note: read 8 Bytes of EDID data every time
*/
#define EDID_WAIT_TIMEOUT 10
static void hdmitx_read_edid(unsigned char *rx_edid)
{
unsigned int timeout = 0;
@@ -4454,6 +4455,7 @@ static void hdmitx_read_edid(unsigned char *rx_edid)
/* Program SLAVE/ADDR */
hdmitx_wr_reg(HDMITX_DWC_I2CM_SLAVE, 0x50);
hdmitx_wr_reg(HDMITX_DWC_IH_I2CM_STAT0, 1 << 1);
/* Read complete EDID data sequentially */
while (byte_num < 128 * blk_no) {
hdmitx_wr_reg(HDMITX_DWC_I2CM_ADDRESS, byte_num&0xff);
@@ -4467,11 +4469,11 @@ static void hdmitx_read_edid(unsigned char *rx_edid)
/* Wait until I2C done */
timeout = 0;
while ((!(hdmitx_rd_reg(HDMITX_DWC_IH_I2CM_STAT0) & (1 << 1)))
&& (timeout < 3)) {
&& (timeout < EDID_WAIT_TIMEOUT)) {
mdelay(2);
timeout++;
}
if (timeout == 3)
if (timeout == EDID_WAIT_TIMEOUT)
pr_info(HW "ddc timeout\n");
hdmitx_wr_reg(HDMITX_DWC_IH_I2CM_STAT0, 1 << 1);
/* Read back 8 bytes */
@@ -5154,6 +5156,13 @@ static int hdmitx_cntl_misc(struct hdmitx_dev *hdev, unsigned int cmd,
}
hdmitx_set_reg_bits(HDMITX_DWC_MC_CLKDIS, !!argv, 6, 1);
break;
case MISC_I2C_RESET:
hdmitx_set_reg_bits(HDMITX_TOP_SW_RESET, 1, 9, 1);
usleep_range(1000, 2000);
hdmitx_set_reg_bits(HDMITX_TOP_SW_RESET, 0, 9, 1);
usleep_range(1000, 2000);
hdmi_hwi_init(hdev);
break;
case MISC_I2C_REACTIVE:
hdmitx_hdcp_opr(4);
hdmitx_set_reg_bits(HDMITX_DWC_A_HDCPCFG1, 0, 0, 1);

3
include/linux/amlogic/media/vout/hdmi_tx/hdmi_tx_module.h
View File

@@ -542,7 +542,8 @@ struct hdmitx_dev {
#define MISC_HDCP_CLKDIS (CMD_MISC_OFFSET + 0x0e)
#define MISC_TMDS_RXSENSE (CMD_MISC_OFFSET + 0x0f)
#define MISC_I2C_REACTIVE (CMD_MISC_OFFSET + 0x10)
#define MISC_READ_AVMUTE_OP (CMD_MISC_OFFSET + 0x11)
#define MISC_I2C_RESET (CMD_MISC_OFFSET + 0x11)
#define MISC_READ_AVMUTE_OP (CMD_MISC_OFFSET + 0x12)
/***********************************************************************
* Get State //GetState