On 17:27 Wed 07 Nov , Nicolas Royer wrote:
> Only AES use DMA in AT91SAM9G45 (TDES and SHA use PDC).
>
> However latest Atmel TDES and SHA IP releases use DMA instead of PDC.
> --> Atmel TDES and SHA drivers need DMA platform data for those IP releases.
>
> Goal of this patch is to use the same platform data structure for all Atmel
> crypto peripherals. This structure contains information about DMA interface.
>
> Signed-off-by: Nicolas Royer <nicolas@xxxxxxxxxx>
> Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
> Acked-by: Eric Bénard <eric@xxxxxxxxxx>
> Tested-by: Eric Bénard <eric@xxxxxxxxxx>
> ---
> v2 : check kzalloc return value.
>
> arch/arm/mach-at91/at91sam9g45_devices.c | 10 ++++++----
> include/linux/platform_data/atmel-aes.h | 22 ----------------------
> include/linux/platform_data/crypto-atmel.h | 22 ++++++++++++++++++++++
> 3 files changed, 28 insertions(+), 26 deletions(-)
> delete mode 100644 include/linux/platform_data/atmel-aes.h
> create mode 100644 include/linux/platform_data/crypto-atmel.h
>
> diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
> index fcd233c..c1631d1 100644
> --- a/arch/arm/mach-at91/at91sam9g45_devices.c
> +++ b/arch/arm/mach-at91/at91sam9g45_devices.c
> @@ -18,7 +18,7 @@
> #include <linux/platform_device.h>
> #include <linux/i2c-gpio.h>
> #include <linux/atmel-mci.h>
> -#include <linux/platform_data/atmel-aes.h>
> +#include <linux/platform_data/crypto-atmel.h>
>
> #include <linux/platform_data/at91_adc.h>
>
> @@ -1900,7 +1900,7 @@ static void __init at91_add_device_tdes(void) {}
> * -------------------------------------------------------------------- */
>
> #if defined(CONFIG_CRYPTO_DEV_ATMEL_AES) || defined(CONFIG_CRYPTO_DEV_ATMEL_AES_MODULE)
> -static struct aes_platform_data aes_data;
> +static struct crypto_platform_data aes_data;
> static u64 aes_dmamask = DMA_BIT_MASK(32);
>
> static struct resource aes_resources[] = {
> @@ -1931,9 +1931,11 @@ static struct platform_device at91sam9g45_aes_device = {
> static void __init at91_add_device_aes(void)
> {
> struct at_dma_slave *atslave;
> - struct aes_dma_data *alt_atslave;
> + struct crypto_dma_data *alt_atslave;
>
> - alt_atslave = kzalloc(sizeof(struct aes_dma_data), GFP_KERNEL);
> + alt_atslave = kzalloc(sizeof(struct crypto_dma_data), GFP_KERNEL);
I still not understand why we need to allocate it
just declare it as static
Best Regards,
J.
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