From patchwork Fri May 29 13:12:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 11578581 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DE1B1739 for ; Fri, 29 May 2020 13:12:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CED1220C09 for ; Fri, 29 May 2020 13:12:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727106AbgE2NM2 (ORCPT ); Fri, 29 May 2020 09:12:28 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:48214 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727069AbgE2NM1 (ORCPT ); Fri, 29 May 2020 09:12:27 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 82D188029EA2; Fri, 29 May 2020 13:12:23 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xx4QNDkg_5nm; Fri, 29 May 2020 16:12:22 +0300 (MSK) From: Serge Semin To: Mark Brown CC: Serge Semin , Serge Semin , Georgy Vlasov , Ramil Zaripov , Andy Shevchenko , Alexey Malahov , Thomas Bogendoerfer , Arnd Bergmann , Feng Tang , Rob Herring , , , , Subject: [PATCH v6 13/16] spi: dw: Cleanup generic DW DMA code namings Date: Fri, 29 May 2020 16:12:02 +0300 Message-ID: <20200529131205.31838-14-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200529131205.31838-1-Sergey.Semin@baikalelectronics.ru> References: <20200529131205.31838-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Since from now the former Intel MID platform layer is used as a generic DW SPI DMA module, let's alter the internal methods naming to be DMA-related instead of having the "mid_" prefix. Co-developed-by: Georgy Vlasov Signed-off-by: Georgy Vlasov Co-developed-by: Ramil Zaripov Signed-off-by: Ramil Zaripov Signed-off-by: Serge Semin Reviewed-by: Andy Shevchenko Cc: Alexey Malahov Cc: Thomas Bogendoerfer Cc: Arnd Bergmann Cc: Feng Tang Cc: Rob Herring Cc: linux-mips@vger.kernel.org Cc: devicetree@vger.kernel.org --- Changelog v2: - Leave the DMA setup method suffixes to be mfld and generic. --- drivers/spi/spi-dw-dma.c | 85 ++++++++++++++++++++-------------------- drivers/spi/spi-dw-pci.c | 4 +- drivers/spi/spi-dw.h | 8 ++-- 3 files changed, 49 insertions(+), 48 deletions(-) diff --git a/drivers/spi/spi-dw-dma.c b/drivers/spi/spi-dw-dma.c index 7ae31682b5de..1b96cec6d8cd 100644 --- a/drivers/spi/spi-dw-dma.c +++ b/drivers/spi/spi-dw-dma.c @@ -23,7 +23,7 @@ #define TX_BUSY 1 #define TX_BURST_LEVEL 16 -static bool mid_spi_dma_chan_filter(struct dma_chan *chan, void *param) +static bool dw_spi_dma_chan_filter(struct dma_chan *chan, void *param) { struct dw_dma_slave *s = param; @@ -34,7 +34,7 @@ static bool mid_spi_dma_chan_filter(struct dma_chan *chan, void *param) return true; } -static void mid_spi_maxburst_init(struct dw_spi *dws) +static void dw_spi_dma_maxburst_init(struct dw_spi *dws) { struct dma_slave_caps caps; u32 max_burst, def_burst; @@ -59,7 +59,7 @@ static void mid_spi_maxburst_init(struct dw_spi *dws) dws->txburst = min(max_burst, def_burst); } -static int mid_spi_dma_init_mfld(struct device *dev, struct dw_spi *dws) +static int dw_spi_dma_init_mfld(struct device *dev, struct dw_spi *dws) { struct dw_dma_slave slave = { .src_id = 0, @@ -81,13 +81,13 @@ static int mid_spi_dma_init_mfld(struct device *dev, struct dw_spi *dws) /* 1. Init rx channel */ slave.dma_dev = &dma_dev->dev; - dws->rxchan = dma_request_channel(mask, mid_spi_dma_chan_filter, &slave); + dws->rxchan = dma_request_channel(mask, dw_spi_dma_chan_filter, &slave); if (!dws->rxchan) goto err_exit; /* 2. Init tx channel */ slave.dst_id = 1; - dws->txchan = dma_request_channel(mask, mid_spi_dma_chan_filter, &slave); + dws->txchan = dma_request_channel(mask, dw_spi_dma_chan_filter, &slave); if (!dws->txchan) goto free_rxchan; @@ -96,7 +96,7 @@ static int mid_spi_dma_init_mfld(struct device *dev, struct dw_spi *dws) init_completion(&dws->dma_completion); - mid_spi_maxburst_init(dws); + dw_spi_dma_maxburst_init(dws); return 0; @@ -107,7 +107,7 @@ static int mid_spi_dma_init_mfld(struct device *dev, struct dw_spi *dws) return -EBUSY; } -static int mid_spi_dma_init_generic(struct device *dev, struct dw_spi *dws) +static int dw_spi_dma_init_generic(struct device *dev, struct dw_spi *dws) { dws->rxchan = dma_request_slave_channel(dev, "rx"); if (!dws->rxchan) @@ -125,12 +125,12 @@ static int mid_spi_dma_init_generic(struct device *dev, struct dw_spi *dws) init_completion(&dws->dma_completion); - mid_spi_maxburst_init(dws); + dw_spi_dma_maxburst_init(dws); return 0; } -static void mid_spi_dma_exit(struct dw_spi *dws) +static void dw_spi_dma_exit(struct dw_spi *dws) { if (dws->txchan) { dmaengine_terminate_sync(dws->txchan); @@ -145,7 +145,7 @@ static void mid_spi_dma_exit(struct dw_spi *dws) dw_writel(dws, DW_SPI_DMACR, 0); } -static irqreturn_t dma_transfer(struct dw_spi *dws) +static irqreturn_t dw_spi_dma_transfer_handler(struct dw_spi *dws) { u16 irq_status = dw_readl(dws, DW_SPI_ISR); @@ -161,15 +161,16 @@ static irqreturn_t dma_transfer(struct dw_spi *dws) return IRQ_HANDLED; } -static bool mid_spi_can_dma(struct spi_controller *master, - struct spi_device *spi, struct spi_transfer *xfer) +static bool dw_spi_can_dma(struct spi_controller *master, + struct spi_device *spi, struct spi_transfer *xfer) { struct dw_spi *dws = spi_controller_get_devdata(master); return xfer->len > dws->fifo_len; } -static enum dma_slave_buswidth convert_dma_width(u8 n_bytes) { +static enum dma_slave_buswidth dw_spi_dma_convert_width(u8 n_bytes) +{ if (n_bytes == 1) return DMA_SLAVE_BUSWIDTH_1_BYTE; else if (n_bytes == 2) @@ -244,8 +245,8 @@ static void dw_spi_dma_tx_done(void *arg) complete(&dws->dma_completion); } -static struct dma_async_tx_descriptor *dw_spi_dma_prepare_tx(struct dw_spi *dws, - struct spi_transfer *xfer) +static struct dma_async_tx_descriptor * +dw_spi_dma_prepare_tx(struct dw_spi *dws, struct spi_transfer *xfer) { struct dma_slave_config txconf; struct dma_async_tx_descriptor *txdesc; @@ -258,7 +259,7 @@ static struct dma_async_tx_descriptor *dw_spi_dma_prepare_tx(struct dw_spi *dws, txconf.dst_addr = dws->dma_addr; txconf.dst_maxburst = dws->txburst; txconf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - txconf.dst_addr_width = convert_dma_width(dws->n_bytes); + txconf.dst_addr_width = dw_spi_dma_convert_width(dws->n_bytes); txconf.device_fc = false; dmaengine_slave_config(dws->txchan, &txconf); @@ -350,7 +351,7 @@ static struct dma_async_tx_descriptor *dw_spi_dma_prepare_rx(struct dw_spi *dws, rxconf.src_addr = dws->dma_addr; rxconf.src_maxburst = dws->rxburst; rxconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - rxconf.src_addr_width = convert_dma_width(dws->n_bytes); + rxconf.src_addr_width = dw_spi_dma_convert_width(dws->n_bytes); rxconf.device_fc = false; dmaengine_slave_config(dws->rxchan, &rxconf); @@ -369,7 +370,7 @@ static struct dma_async_tx_descriptor *dw_spi_dma_prepare_rx(struct dw_spi *dws, return rxdesc; } -static int mid_spi_dma_setup(struct dw_spi *dws, struct spi_transfer *xfer) +static int dw_spi_dma_setup(struct dw_spi *dws, struct spi_transfer *xfer) { u16 imr = 0, dma_ctrl = 0; @@ -391,12 +392,12 @@ static int mid_spi_dma_setup(struct dw_spi *dws, struct spi_transfer *xfer) reinit_completion(&dws->dma_completion); - dws->transfer_handler = dma_transfer; + dws->transfer_handler = dw_spi_dma_transfer_handler; return 0; } -static int mid_spi_dma_transfer(struct dw_spi *dws, struct spi_transfer *xfer) +static int dw_spi_dma_transfer(struct dw_spi *dws, struct spi_transfer *xfer) { struct dma_async_tx_descriptor *txdesc, *rxdesc; int ret; @@ -436,7 +437,7 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, struct spi_transfer *xfer) return ret; } -static void mid_spi_dma_stop(struct dw_spi *dws) +static void dw_spi_dma_stop(struct dw_spi *dws) { if (test_bit(TX_BUSY, &dws->dma_chan_busy)) { dmaengine_terminate_sync(dws->txchan); @@ -450,32 +451,32 @@ static void mid_spi_dma_stop(struct dw_spi *dws) dw_writel(dws, DW_SPI_DMACR, 0); } -static const struct dw_spi_dma_ops mfld_dma_ops = { - .dma_init = mid_spi_dma_init_mfld, - .dma_exit = mid_spi_dma_exit, - .dma_setup = mid_spi_dma_setup, - .can_dma = mid_spi_can_dma, - .dma_transfer = mid_spi_dma_transfer, - .dma_stop = mid_spi_dma_stop, +static const struct dw_spi_dma_ops dw_spi_dma_mfld_ops = { + .dma_init = dw_spi_dma_init_mfld, + .dma_exit = dw_spi_dma_exit, + .dma_setup = dw_spi_dma_setup, + .can_dma = dw_spi_can_dma, + .dma_transfer = dw_spi_dma_transfer, + .dma_stop = dw_spi_dma_stop, }; -void dw_spi_mid_setup_dma_mfld(struct dw_spi *dws) +void dw_spi_dma_setup_mfld(struct dw_spi *dws) { - dws->dma_ops = &mfld_dma_ops; + dws->dma_ops = &dw_spi_dma_mfld_ops; } -EXPORT_SYMBOL_GPL(dw_spi_mid_setup_dma_mfld); - -static const struct dw_spi_dma_ops generic_dma_ops = { - .dma_init = mid_spi_dma_init_generic, - .dma_exit = mid_spi_dma_exit, - .dma_setup = mid_spi_dma_setup, - .can_dma = mid_spi_can_dma, - .dma_transfer = mid_spi_dma_transfer, - .dma_stop = mid_spi_dma_stop, +EXPORT_SYMBOL_GPL(dw_spi_dma_setup_mfld); + +static const struct dw_spi_dma_ops dw_spi_dma_generic_ops = { + .dma_init = dw_spi_dma_init_generic, + .dma_exit = dw_spi_dma_exit, + .dma_setup = dw_spi_dma_setup, + .can_dma = dw_spi_can_dma, + .dma_transfer = dw_spi_dma_transfer, + .dma_stop = dw_spi_dma_stop, }; -void dw_spi_mid_setup_dma_generic(struct dw_spi *dws) +void dw_spi_dma_setup_generic(struct dw_spi *dws) { - dws->dma_ops = &generic_dma_ops; + dws->dma_ops = &dw_spi_dma_generic_ops; } -EXPORT_SYMBOL_GPL(dw_spi_mid_setup_dma_generic); +EXPORT_SYMBOL_GPL(dw_spi_dma_setup_generic); diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c index c13707b8493e..2ea73809ca34 100644 --- a/drivers/spi/spi-dw-pci.c +++ b/drivers/spi/spi-dw-pci.c @@ -51,7 +51,7 @@ static int spi_mid_init(struct dw_spi *dws) /* Register hook to configure CTRLR0 */ dws->update_cr0 = dw_spi_update_cr0; - dw_spi_mid_setup_dma_mfld(dws); + dw_spi_dma_setup_mfld(dws); return 0; } @@ -61,7 +61,7 @@ static int spi_generic_init(struct dw_spi *dws) /* Register hook to configure CTRLR0 */ dws->update_cr0 = dw_spi_update_cr0; - dw_spi_mid_setup_dma_generic(dws); + dw_spi_dma_setup_generic(dws); return 0; } diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 91608cf12636..0b2cd7994513 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -259,13 +259,13 @@ extern u32 dw_spi_update_cr0_v1_01a(struct spi_controller *master, #ifdef CONFIG_SPI_DW_DMA -extern void dw_spi_mid_setup_dma_mfld(struct dw_spi *dws); -extern void dw_spi_mid_setup_dma_generic(struct dw_spi *dws); +extern void dw_spi_dma_setup_mfld(struct dw_spi *dws); +extern void dw_spi_dma_setup_generic(struct dw_spi *dws); #else -static inline void dw_spi_mid_setup_dma_mfld(struct dw_spi *dws) {} -static inline void dw_spi_mid_setup_dma_generic(struct dw_spi *dws) {} +static inline void dw_spi_dma_setup_mfld(struct dw_spi *dws) {} +static inline void dw_spi_dma_setup_generic(struct dw_spi *dws) {} #endif /* !CONFIG_SPI_DW_DMA */