Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752204Ab2KGReK (ORCPT ); Wed, 7 Nov 2012 12:34:10 -0500 Received: from smtp2-g21.free.fr ([212.27.42.2]:53506 "EHLO smtp2-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750768Ab2KGReJ (ORCPT ); Wed, 7 Nov 2012 12:34:09 -0500 From: Nicolas Royer To: linux-kernel@vger.kernel.org Cc: nicolas.ferre@atmel.com, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, herbert@gondor.hengli.com.au, davem@davemloft.net, plagnioj@jcrosoft.com, eric@eukrea.com, Nicolas Royer Subject: [PATCH 2/5 v3] ARM: AT91SAM9G45: same platform data structure for all crypto peripherals Date: Wed, 7 Nov 2012 18:34:27 +0100 Message-Id: <1352309667-30868-1-git-send-email-nicolas@eukrea.com> X-Mailer: git-send-email 1.7.6.5 In-Reply-To: <20121107164523.GG4576@game.jcrosoft.org> References: <20121107164523.GG4576@game.jcrosoft.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4584 Lines: 138 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 Acked-by: Nicolas Ferre Acked-by: Eric Bénard Tested-by: Eric Bénard --- v2 : check kzalloc return value. v3 : alt_atslave structure declared as static. arch/arm/mach-at91/at91sam9g45_devices.c | 14 ++++++-------- include/linux/platform_data/atmel-aes.h | 22 ---------------------- include/linux/platform_data/crypto-atmel.h | 22 ++++++++++++++++++++++ 3 files changed, 28 insertions(+), 30 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..1501e58 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c @@ -18,7 +18,7 @@ #include #include #include -#include +#include #include @@ -1900,7 +1900,8 @@ 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 struct crypto_dma_data alt_atslave; static u64 aes_dmamask = DMA_BIT_MASK(32); static struct resource aes_resources[] = { @@ -1931,23 +1932,20 @@ 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; - - alt_atslave = kzalloc(sizeof(struct aes_dma_data), GFP_KERNEL); /* DMA TX slave channel configuration */ - atslave = &alt_atslave->txdata; + atslave = &alt_atslave.txdata; atslave->dma_dev = &at_hdmac_device.dev; atslave->cfg = ATC_FIFOCFG_ENOUGHSPACE | ATC_SRC_H2SEL_HW | ATC_SRC_PER(AT_DMA_ID_AES_RX); /* DMA RX slave channel configuration */ - atslave = &alt_atslave->rxdata; + atslave = &alt_atslave.rxdata; atslave->dma_dev = &at_hdmac_device.dev; atslave->cfg = ATC_FIFOCFG_ENOUGHSPACE | ATC_DST_H2SEL_HW | ATC_DST_PER(AT_DMA_ID_AES_TX); - aes_data.dma_slave = alt_atslave; + aes_data.dma_slave = &alt_atslave; platform_device_register(&at91sam9g45_aes_device); } #else diff --git a/include/linux/platform_data/atmel-aes.h b/include/linux/platform_data/atmel-aes.h deleted file mode 100644 index ab68082..0000000 --- a/include/linux/platform_data/atmel-aes.h +++ /dev/null @@ -1,22 +0,0 @@ -#ifndef __LINUX_ATMEL_AES_H -#define __LINUX_ATMEL_AES_H - -#include - -/** - * struct aes_dma_data - DMA data for AES - */ -struct aes_dma_data { - struct at_dma_slave txdata; - struct at_dma_slave rxdata; -}; - -/** - * struct aes_platform_data - board-specific AES configuration - * @dma_slave: DMA slave interface to use in data transfers. - */ -struct aes_platform_data { - struct aes_dma_data *dma_slave; -}; - -#endif /* __LINUX_ATMEL_AES_H */ diff --git a/include/linux/platform_data/crypto-atmel.h b/include/linux/platform_data/crypto-atmel.h new file mode 100644 index 0000000..b46e0d9 --- /dev/null +++ b/include/linux/platform_data/crypto-atmel.h @@ -0,0 +1,22 @@ +#ifndef __LINUX_CRYPTO_ATMEL_H +#define __LINUX_CRYPTO_ATMEL_H + +#include + +/** + * struct crypto_dma_data - DMA data for AES/TDES/SHA + */ +struct crypto_dma_data { + struct at_dma_slave txdata; + struct at_dma_slave rxdata; +}; + +/** + * struct crypto_platform_data - board-specific AES/TDES/SHA configuration + * @dma_slave: DMA slave interface to use in data transfers. + */ +struct crypto_platform_data { + struct crypto_dma_data *dma_slave; +}; + +#endif /* __LINUX_CRYPTO_ATMEL_H */ -- 1.7.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/