From: Peter Ujfalusi <peter.ujfalusi@ti.com> To: <herbert@gondor.apana.org.au>, <davem@davemloft.net>, <nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>, <ludovic.desroches@microchip.com> Cc: <vkoul@kernel.org>, <linux-crypto@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org> Subject: [PATCH v2 2/3] crypto: atmel-sha - Retire dma_request_slave_channel_compat() Date: Thu, 21 Nov 2019 12:16:01 +0200 [thread overview] Message-ID: <20191121101602.21941-3-peter.ujfalusi@ti.com> (raw) In-Reply-To: <20191121101602.21941-1-peter.ujfalusi@ti.com> The driver no longer boots in legacy mode, only via DT. This makes the dma_request_slave_channel_compat() redundant. If ever the filter function would be executed it will return false as the dma_slave is not really initialized. Switch to use dma_request_chan() which would allow legacy boot if ever needed again by configuring dma_slave_map for the DMA driver. At the same time skip allocating memory for dma_slave as it is not used anymore. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- drivers/crypto/atmel-sha.c | 39 +++++++------------------------------- 1 file changed, 7 insertions(+), 32 deletions(-) diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c index 8ea0e4bcde0d..9d392c5ff06b 100644 --- a/drivers/crypto/atmel-sha.c +++ b/drivers/crypto/atmel-sha.c @@ -2608,32 +2608,16 @@ static int atmel_sha_register_algs(struct atmel_sha_dev *dd) return err; } -static bool atmel_sha_filter(struct dma_chan *chan, void *slave) -{ - struct at_dma_slave *sl = slave; - - if (sl && sl->dma_dev == chan->device->dev) { - chan->private = sl; - return true; - } else { - return false; - } -} - static int atmel_sha_dma_init(struct atmel_sha_dev *dd, struct crypto_platform_data *pdata) { - dma_cap_mask_t mask_in; + dd->dma_lch_in.chan = dma_request_chan(dd->dev, "tx"); + if (IS_ERR(dd->dma_lch_in.chan)) { + int ret = PTR_ERR(dd->dma_lch_in.chan); - /* Try to grab DMA channel */ - dma_cap_zero(mask_in); - dma_cap_set(DMA_SLAVE, mask_in); - - dd->dma_lch_in.chan = dma_request_slave_channel_compat(mask_in, - atmel_sha_filter, &pdata->dma_slave->rxdata, dd->dev, "tx"); - if (!dd->dma_lch_in.chan) { - dev_warn(dd->dev, "no DMA channel available\n"); - return -ENODEV; + if (ret != -EPROBE_DEFER) + dev_warn(dd->dev, "no DMA channel available\n"); + return ret; } dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV; @@ -2724,12 +2708,6 @@ static struct crypto_platform_data *atmel_sha_of_init(struct platform_device *pd if (!pdata) return ERR_PTR(-ENOMEM); - pdata->dma_slave = devm_kzalloc(&pdev->dev, - sizeof(*(pdata->dma_slave)), - GFP_KERNEL); - if (!pdata->dma_slave) - return ERR_PTR(-ENOMEM); - return pdata; } #else /* CONFIG_OF */ @@ -2823,10 +2801,7 @@ static int atmel_sha_probe(struct platform_device *pdev) goto iclk_unprepare; } } - if (!pdata->dma_slave) { - err = -ENXIO; - goto iclk_unprepare; - } + err = atmel_sha_dma_init(sha_dd, pdata); if (err) goto err_sha_dma; -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
WARNING: multiple messages have this Message-ID (diff)
From: Peter Ujfalusi <peter.ujfalusi@ti.com> To: <herbert@gondor.apana.org.au>, <davem@davemloft.net>, <nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>, <ludovic.desroches@microchip.com> Cc: vkoul@kernel.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/3] crypto: atmel-sha - Retire dma_request_slave_channel_compat() Date: Thu, 21 Nov 2019 12:16:01 +0200 [thread overview] Message-ID: <20191121101602.21941-3-peter.ujfalusi@ti.com> (raw) In-Reply-To: <20191121101602.21941-1-peter.ujfalusi@ti.com> The driver no longer boots in legacy mode, only via DT. This makes the dma_request_slave_channel_compat() redundant. If ever the filter function would be executed it will return false as the dma_slave is not really initialized. Switch to use dma_request_chan() which would allow legacy boot if ever needed again by configuring dma_slave_map for the DMA driver. At the same time skip allocating memory for dma_slave as it is not used anymore. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- drivers/crypto/atmel-sha.c | 39 +++++++------------------------------- 1 file changed, 7 insertions(+), 32 deletions(-) diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c index 8ea0e4bcde0d..9d392c5ff06b 100644 --- a/drivers/crypto/atmel-sha.c +++ b/drivers/crypto/atmel-sha.c @@ -2608,32 +2608,16 @@ static int atmel_sha_register_algs(struct atmel_sha_dev *dd) return err; } -static bool atmel_sha_filter(struct dma_chan *chan, void *slave) -{ - struct at_dma_slave *sl = slave; - - if (sl && sl->dma_dev == chan->device->dev) { - chan->private = sl; - return true; - } else { - return false; - } -} - static int atmel_sha_dma_init(struct atmel_sha_dev *dd, struct crypto_platform_data *pdata) { - dma_cap_mask_t mask_in; + dd->dma_lch_in.chan = dma_request_chan(dd->dev, "tx"); + if (IS_ERR(dd->dma_lch_in.chan)) { + int ret = PTR_ERR(dd->dma_lch_in.chan); - /* Try to grab DMA channel */ - dma_cap_zero(mask_in); - dma_cap_set(DMA_SLAVE, mask_in); - - dd->dma_lch_in.chan = dma_request_slave_channel_compat(mask_in, - atmel_sha_filter, &pdata->dma_slave->rxdata, dd->dev, "tx"); - if (!dd->dma_lch_in.chan) { - dev_warn(dd->dev, "no DMA channel available\n"); - return -ENODEV; + if (ret != -EPROBE_DEFER) + dev_warn(dd->dev, "no DMA channel available\n"); + return ret; } dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV; @@ -2724,12 +2708,6 @@ static struct crypto_platform_data *atmel_sha_of_init(struct platform_device *pd if (!pdata) return ERR_PTR(-ENOMEM); - pdata->dma_slave = devm_kzalloc(&pdev->dev, - sizeof(*(pdata->dma_slave)), - GFP_KERNEL); - if (!pdata->dma_slave) - return ERR_PTR(-ENOMEM); - return pdata; } #else /* CONFIG_OF */ @@ -2823,10 +2801,7 @@ static int atmel_sha_probe(struct platform_device *pdev) goto iclk_unprepare; } } - if (!pdata->dma_slave) { - err = -ENXIO; - goto iclk_unprepare; - } + err = atmel_sha_dma_init(sha_dd, pdata); if (err) goto err_sha_dma; -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-11-21 10:16 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-11-21 10:15 [PATCH v2 0/3] crypto: atmel - Retire dma_request_slave_channel_compat() Peter Ujfalusi 2019-11-21 10:15 ` Peter Ujfalusi 2019-11-21 10:16 ` [PATCH v2 1/3] crypto: atmel-aes " Peter Ujfalusi 2019-11-21 10:16 ` Peter Ujfalusi 2019-11-21 10:16 ` Peter Ujfalusi [this message] 2019-11-21 10:16 ` [PATCH v2 2/3] crypto: atmel-sha " Peter Ujfalusi 2019-11-21 10:16 ` [PATCH v2 3/3] crypto: atmel-tdes " Peter Ujfalusi 2019-11-21 10:16 ` Peter Ujfalusi 2019-11-22 4:37 ` [PATCH v2 0/3] crypto: atmel " Vinod Koul 2019-11-22 4:37 ` Vinod Koul 2019-12-11 9:36 ` Herbert Xu 2019-12-11 9:36 ` Herbert Xu
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