From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757237Ab2ARJNW (ORCPT ); Wed, 18 Jan 2012 04:13:22 -0500 Received: from eu1sys200aog104.obsmtp.com ([207.126.144.117]:49035 "EHLO eu1sys200aog104.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757004Ab2ARJNL (ORCPT ); Wed, 18 Jan 2012 04:13:11 -0500 From: Viresh Kumar To: , Cc: , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH V2 11/12] dmaengine/dw_dmac: Fix dw_dmac user drivers to adapt to slave_config changes Date: Wed, 18 Jan 2012 14:41:58 +0530 Message-ID: <012944d886dbe19f82c3ecedb0a2c80b24af8041.1326876464.git.viresh.kumar@st.com> X-Mailer: git-send-email 1.7.8.110.g4cb5d In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There are few existing user drivers of dw_dmac. They will break as soon as we remove unused fields from struct dw_dma_slave. This patch focuses to fix these user drivers to use dma_slave_config() routine. Signed-off-by: Viresh Kumar --- arch/avr32/mach-at32ap/at32ap700x.c | 13 ------- arch/avr32/mach-at32ap/include/mach/atmel-mci.h | 7 ---- drivers/mmc/host/atmel-mci.c | 24 +++++++++---- sound/atmel/abdac.c | 18 ++++++++-- sound/atmel/ac97c.c | 41 ++++++++++++++++++---- 5 files changed, 63 insertions(+), 40 deletions(-) diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index 7fbf0dc..d05936b 100644 --- a/arch/avr32/mach-at32ap/at32ap700x.c +++ b/arch/avr32/mach-at32ap/at32ap700x.c @@ -1353,7 +1353,6 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data) goto fail; slave->sdata.dma_dev = &dw_dmac0_device.dev; - slave->sdata.reg_width = DW_DMA_SLAVE_WIDTH_32BIT; slave->sdata.cfg_hi = (DWC_CFGH_SRC_PER(0) | DWC_CFGH_DST_PER(1)); slave->sdata.cfg_lo &= ~(DWC_CFGL_HS_DST_POL @@ -2048,27 +2047,19 @@ at32_add_device_ac97c(unsigned int id, struct ac97c_platform_data *data, /* Check if DMA slave interface for capture should be configured. */ if (flags & AC97C_CAPTURE) { rx_dws->dma_dev = &dw_dmac0_device.dev; - rx_dws->reg_width = DW_DMA_SLAVE_WIDTH_16BIT; rx_dws->cfg_hi = DWC_CFGH_SRC_PER(3); rx_dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL); rx_dws->src_master = 0; rx_dws->dst_master = 1; - rx_dws->src_msize = DW_DMA_MSIZE_1; - rx_dws->dst_msize = DW_DMA_MSIZE_1; - rx_dws->fc = DW_DMA_FC_D_P2M; } /* Check if DMA slave interface for playback should be configured. */ if (flags & AC97C_PLAYBACK) { tx_dws->dma_dev = &dw_dmac0_device.dev; - tx_dws->reg_width = DW_DMA_SLAVE_WIDTH_16BIT; tx_dws->cfg_hi = DWC_CFGH_DST_PER(4); tx_dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL); tx_dws->src_master = 0; tx_dws->dst_master = 1; - tx_dws->src_msize = DW_DMA_MSIZE_1; - tx_dws->dst_msize = DW_DMA_MSIZE_1; - tx_dws->fc = DW_DMA_FC_D_M2P; } if (platform_device_add_data(pdev, data, @@ -2138,14 +2129,10 @@ at32_add_device_abdac(unsigned int id, struct atmel_abdac_pdata *data) dws = &data->dws; dws->dma_dev = &dw_dmac0_device.dev; - dws->reg_width = DW_DMA_SLAVE_WIDTH_32BIT; dws->cfg_hi = DWC_CFGH_DST_PER(2); dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL); dws->src_master = 0; dws->dst_master = 1; - dws->src_msize = DW_DMA_MSIZE_1; - dws->dst_msize = DW_DMA_MSIZE_1; - dws->fc = DW_DMA_FC_D_M2P; if (platform_device_add_data(pdev, data, sizeof(struct atmel_abdac_pdata))) diff --git a/arch/avr32/mach-at32ap/include/mach/atmel-mci.h b/arch/avr32/mach-at32ap/include/mach/atmel-mci.h index a9b3896..4bba585 100644 --- a/arch/avr32/mach-at32ap/include/mach/atmel-mci.h +++ b/arch/avr32/mach-at32ap/include/mach/atmel-mci.h @@ -14,11 +14,4 @@ struct mci_dma_data { #define slave_data_ptr(s) (&(s)->sdata) #define find_slave_dev(s) ((s)->sdata.dma_dev) -#define setup_dma_addr(s, t, r) do { \ - if (s) { \ - (s)->sdata.tx_reg = (t); \ - (s)->sdata.rx_reg = (r); \ - } \ -} while (0) - #endif /* __MACH_ATMEL_MCI_H */ diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index fcfe1eb..3ba865d 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -173,6 +174,7 @@ struct atmel_mci { struct atmel_mci_dma dma; struct dma_chan *data_chan; + struct dma_slave_config dma_conf; u32 cmd_status; u32 data_status; @@ -863,15 +865,16 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) if (data->flags & MMC_DATA_READ) { direction = DMA_FROM_DEVICE; - slave_dirn = DMA_DEV_TO_MEM; + host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM; } else { direction = DMA_TO_DEVICE; - slave_dirn = DMA_MEM_TO_DEV; + host->dma_conf.direction = slave_dirn = DMA_MEM_TO_DEV; } sglen = dma_map_sg(chan->device->dev, data->sg, data->sg_len, direction); + dmaengine_slave_config(chan, &host->dma_conf); desc = chan->device->device_prep_slave_sg(chan, data->sg, sglen, slave_dirn, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); @@ -1957,22 +1960,27 @@ static void atmci_configure_dma(struct atmel_mci *host) if (pdata && find_slave_dev(pdata->dma_slave)) { dma_cap_mask_t mask; - setup_dma_addr(pdata->dma_slave, - host->mapbase + ATMCI_TDR, - host->mapbase + ATMCI_RDR); - /* Try to grab a DMA channel */ dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); host->dma.chan = dma_request_channel(mask, atmci_filter, pdata->dma_slave); } - if (!host->dma.chan) + if (!host->dma.chan) { dev_notice(&host->pdev->dev, "DMA not available, using PIO\n"); - else + } else { dev_info(&host->pdev->dev, "Using %s for DMA transfers\n", dma_chan_name(host->dma.chan)); + + host->dma_conf.src_addr = host->mapbase + ATMCI_RDR; + host->dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + host->dma_conf.src_maxburst = 1; + host->dma_conf.dst_addr = host->mapbase + ATMCI_TDR; + host->dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + host->dma_conf.dst_maxburst = 1; + host->dma_conf.device_fc = false; + } } static inline unsigned int atmci_get_version(struct atmel_mci *host) diff --git a/sound/atmel/abdac.c b/sound/atmel/abdac.c index 4fa1dbd..f7c2bb0 100644 --- a/sound/atmel/abdac.c +++ b/sound/atmel/abdac.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -467,15 +468,24 @@ static int __devinit atmel_abdac_probe(struct platform_device *pdev) snd_card_set_dev(card, &pdev->dev); if (pdata->dws.dma_dev) { - struct dw_dma_slave *dws = &pdata->dws; dma_cap_mask_t mask; - dws->tx_reg = regs->start + DAC_DATA; - dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); - dac->dma.chan = dma_request_channel(mask, filter, dws); + dac->dma.chan = dma_request_channel(mask, filter, &pdata->dws); + if (dac->dma.chan) { + struct dma_slave_config dma_conf = { + .dst_addr = regs->start + DAC_DATA, + .dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, + .src_maxburst = 1, + .dst_maxburst = 1, + .direction = DMA_MEM_TO_DEV, + .device_fc = false, + }; + + dmaengine_slave_config(dac->dma.chan, &dma_conf); + } } if (!pdata->dws.dma_dev || !dac->dma.chan) { dev_dbg(&pdev->dev, "DMA not available\n"); diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c index cd9428b..15f47e3 100644 --- a/sound/atmel/ac97c.c +++ b/sound/atmel/ac97c.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include @@ -1010,16 +1011,28 @@ static int __devinit atmel_ac97c_probe(struct platform_device *pdev) if (cpu_is_at32ap7000()) { if (pdata->rx_dws.dma_dev) { - struct dw_dma_slave *dws = &pdata->rx_dws; dma_cap_mask_t mask; - dws->rx_reg = regs->start + AC97C_CARHR + 2; - dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); chip->dma.rx_chan = dma_request_channel(mask, filter, - dws); + &pdata->rx_dws); + if (chip->dma.rx_chan) { + struct dma_slave_config dma_conf = { + .src_addr = regs->start + AC97C_CARHR + + 2, + .src_addr_width = + DMA_SLAVE_BUSWIDTH_2_BYTES, + .src_maxburst = 1, + .dst_maxburst = 1, + .direction = DMA_DEV_TO_MEM, + .device_fc = false, + }; + + dmaengine_slave_config(chip->dma.rx_chan, + &dma_conf); + } dev_info(&chip->pdev->dev, "using %s for DMA RX\n", dev_name(&chip->dma.rx_chan->dev->device)); @@ -1027,16 +1040,28 @@ static int __devinit atmel_ac97c_probe(struct platform_device *pdev) } if (pdata->tx_dws.dma_dev) { - struct dw_dma_slave *dws = &pdata->tx_dws; dma_cap_mask_t mask; - dws->tx_reg = regs->start + AC97C_CATHR + 2; - dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); chip->dma.tx_chan = dma_request_channel(mask, filter, - dws); + &pdata->tx_dws); + if (chip->dma.tx_chan) { + struct dma_slave_config dma_conf = { + .dst_addr = regs->start + AC97C_CATHR + + 2, + .dst_addr_width = + DMA_SLAVE_BUSWIDTH_2_BYTES, + .src_maxburst = 1, + .dst_maxburst = 1, + .direction = DMA_MEM_TO_DEV, + .device_fc = false, + }; + + dmaengine_slave_config(chip->dma.tx_chan, + &dma_conf); + } dev_info(&chip->pdev->dev, "using %s for DMA TX\n", dev_name(&chip->dma.tx_chan->dev->device)); -- 1.7.8.110.g4cb5d