static int32_t sprdfb_dsi_gen_read(uint8_t *param, uint16_t param_length, uint8_t bytes_to_read, uint8_t *read_buffer)
{
uint16_t result;
uint32_t reg_val, reg_val_1, reg_val_2;
result = mipi_dsih_gen_rd_cmd(&(dsi_ctx.dsi_inst), 0, param, param_length, bytes_to_read, read_buffer);
reg_val = dispc_glb_read(SPRD_MIPI_DSIC_BASE + R_DSI_HOST_PHY_STATUS);
#ifdef FB_DSIH_VERSION_1P21A
reg_val_1 = dispc_glb_read(SPRD_MIPI_DSIC_BASE + R_DSI_HOST_INT_ST0);
reg_val_2 = dispc_glb_read(SPRD_MIPI_DSIC_BASE + R_DSI_HOST_INT_ST1);
#else
reg_val_1 = dispc_glb_read(SPRD_MIPI_DSIC_BASE + R_DSI_HOST_ERROR_ST0);
reg_val_2 = dispc_glb_read(SPRD_MIPI_DSIC_BASE + R_DSI_HOST_ERROR_ST1);
#endif
if(0 != (reg_val & 0x2)){
printk("sprdfb: [%s] mipi read hang (0x%x)!\n", __FUNCTION__, reg_val);
dsi_ctx.status = 2;
result = 0;
}
if(0 != (reg_val_1 & 0x701)){
printk("sprdfb: [%s] mipi read status error!(0x%x, 0x%x)\n", __FUNCTION__, reg_val_1, reg_val_2);
result = 0;
}
if(0 == result){
printk(KERN_ERR "sprdfb: [%s] return error (%d)\n", __FUNCTION__, result);
return -1;
}
return 0;
}
static int32_t sprdfb_dsi_gen_read(uint8_t *param, uint16_t param_length, uint8_t bytes_to_read, uint8_t *read_buffer)
{
uint16_t result;
result = mipi_dsih_gen_rd_cmd(&(dsi_ctx.dsi_inst), 0, param, param_length, bytes_to_read, read_buffer);
if(0 == result){
FB_PRINT("sprdfb: [%s] error (%d)\n", __FUNCTION__, result);
return -1;
}
return 0;
}
/**
* Send a DCS READ command to peripheral
* @param instance pointer to structure holding the DSI Host core information
* @param vc destination virtual channel
* @param command DCS code
* @param bytes_to_read no of bytes to read (expected to arrive at buffer)
* @param read_buffer pointer to 32-bit array to hold the read buffer words
* return read_buffer_length
* @note this function has an active delay to wait for the buffer to clear.
* The delay is limited to 2 x DSIH_FIFO_ACTIVE_WAIT
* (waiting for command buffer, and waiting for receiving)
* @note this function will enable BTA
*/
uint16_t mipi_dsih_dcs_rd_cmd(dsih_ctrl_t * instance, uint8_t vc, uint8_t command, uint8_t bytes_to_read, uint8_t* read_buffer)
{
if (instance == 0)
{
return 0;
}
if (instance->status != INITIALIZED)
{
return 0;
}
/* COMMAND_TYPE 0x06 - DCS Read no params refer to DSI spec p.47 */
switch (command)
{
case 0xA8:
case 0xA1:
case 0x45:
case 0x3E:
case 0x2E:
case 0x0F:
case 0x0E:
case 0x0D:
case 0x0C:
case 0x0B:
case 0x0A:
case 0x08:
case 0x07:
case 0x06:
return mipi_dsih_gen_rd_cmd(instance, vc, 0x06, 0x0, command, bytes_to_read, read_buffer);
default:
if (instance->log_error != 0)
{
instance->log_error("invalid DCS command");
printf("command %x\n", command);
}
return 0;
}
return 0;
}
