nrf5: add free_driver_priv

Change-Id: I429a9868deb0c4b51f47a4bbad844bdc348e8d21
Signed-off-by: Jim Paris <jim@jtan.com>
Reviewed-on: http://openocd.zylin.com/4608
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

diff --git a/src/flash/nor/nrf5.c b/src/flash/nor/nrf5.c
index ad80e02e0d1e20dced366a88696d336ea8cd6f0f..16459c7f8b1f278de3c0e0bc666a0040f1e788e2 100644 (file)
--- a/src/flash/nor/nrf5.c
+++ b/src/flash/nor/nrf5.c
@@ -108,6 +108,7 @@ enum nrf5_nvmc_config_bits {
 
 struct nrf5_info {
        uint32_t code_page_size;
+       uint32_t refcount;
 
        struct {
                bool probed;
@@ -869,6 +870,18 @@ static int nrf5_write(struct flash_bank *bank, const uint8_t *buffer,
        return chip->bank[bank->bank_number].write(bank, chip, buffer, offset, count);
 }
 
+static void nrf5_free_driver_priv(struct flash_bank *bank)
+{
+       struct nrf5_info *chip = bank->driver_priv;
+       if (chip == NULL)
+               return;
+
+       chip->refcount--;
+       if (chip->refcount == 0) {
+               free(chip);
+               bank->driver_priv = NULL;
+       }
+}
 
 FLASH_BANK_COMMAND_HANDLER(nrf5_flash_bank_command)
 {
@@ -904,6 +917,7 @@ FLASH_BANK_COMMAND_HANDLER(nrf5_flash_bank_command)
                break;
        }
 
+       chip->refcount++;
        chip->bank[bank->bank_number].probed = false;
        bank->driver_priv = chip;
 
@@ -1128,6 +1142,7 @@ struct flash_driver nrf5_flash = {
        .auto_probe             = nrf5_auto_probe,
        .erase_check            = default_flash_blank_check,
        .protect_check          = nrf5_protect_check,
+       .free_driver_priv       = nrf5_free_driver_priv,
 };
 
 /* We need to retain the flash-driver name as well as the commands
@@ -1145,4 +1160,5 @@ struct flash_driver nrf51_flash = {
        .auto_probe             = nrf5_auto_probe,
        .erase_check            = default_flash_blank_check,
        .protect_check          = nrf5_protect_check,
+       .free_driver_priv       = nrf5_free_driver_priv,
 };