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AD9361's userspace driver on linux

Category: Software
Product Number: AD9361
Software Version: 2021_R1

Hi,

I am running the no-OS AD9361 driver on Linux.

It looks like ad9361_init is initialising the axi_adc_init but I would have to initialise the axi_dac_init manually, fair enough, I'm doing something like this:



module_initialize_ad9361() {
    int32_t ret = ad9361_init(&ad9361_phy, init_param);
    axi_dac_init(&ad9361_phy->tx_dac, &tx_dac_init);
    axi_dac_set_datasel(ad9361_phy->tx_dac, -1, AXI_DAC_DATA_SEL_DMA);
}


Given that I want to switch between TDD and FDD, I also created a function to remove the allocated memory, hence I'm able to call module_initialize_ad9361 again, passing a modified version of init_param struct:

module_remove_ad9361() {
     axi_dac_remove(&ad9361_phy->tx_dac);
     int32_t ret = ad9361_remove(ad9361_phy);
}


However, this doesn't work on 1RX1TX mode(but it works on 2RX2TX), I have to initialize the axi_dac only once and not remove it anymore:

module_initialize_ad9361() {
     static bool once{false};

     int32_t ret = ad9361_init(&ad9361_phy, init_param);
     if(!once) {
         axi_dac_init(&ad9361_phy->tx_dac, &tx_dac_init);
         axi_dac_set_datasel(ad9361_phy->tx_dac, -1, AXI_DAC_DATA_SEL_DMA);

         once=true;

     }

}

module_remove_ad9361() {
    int32_t ret = ad9361_remove(ad9361_phy);
}


is this the expected way to modify the AD9361_InitParam struct?


On the other hand, as I already mentioned, the ad9361_init will initialise the axi_adc_init:
ad9361_init --> axi_adc_init --> axi_adc_init_begin --> malloc(axi_adc)

However, I am not able to find where the axi_adc struct is freed, could you tell me where that allocated memory is released?

Thanks



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[edited by: JFelipe at 5:18 PM (GMT -5) on 15 Dec 2022]
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