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author | Yang Yingliang <yangyingliang@huawei.com> | 2023-08-07 20:40:48 +0800 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2023-08-14 13:10:50 +0100 |
commit | 24e9b75c0cc3b465cb8f355b2e1b239a54625ae3 (patch) | |
tree | d01536481ba3bc8cab26bf27f23ded335a0a607e /drivers/spi/spi-ep93xx.c | |
parent | 0c35cc597b211eea2f26eae35904204cbd8e0e94 (diff) | |
download | linux-stable-24e9b75c0cc3b465cb8f355b2e1b239a54625ae3.tar.gz linux-stable-24e9b75c0cc3b465cb8f355b2e1b239a54625ae3.tar.bz2 linux-stable-24e9b75c0cc3b465cb8f355b2e1b239a54625ae3.zip |
spi: ep93xx: switch to use modern name
Change legacy name master to modern name host or controller.
No functional changed.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20230807124105.3429709-4-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-ep93xx.c')
-rw-r--r-- | drivers/spi/spi-ep93xx.c | 174 |
1 files changed, 87 insertions, 87 deletions
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c index 3693b3d425c7..a1d60e51c053 100644 --- a/drivers/spi/spi-ep93xx.c +++ b/drivers/spi/spi-ep93xx.c @@ -104,15 +104,15 @@ struct ep93xx_spi { /** * ep93xx_spi_calc_divisors() - calculates SPI clock divisors - * @master: SPI master + * @host: SPI host * @rate: desired SPI output clock rate * @div_cpsr: pointer to return the cpsr (pre-scaler) divider * @div_scr: pointer to return the scr divider */ -static int ep93xx_spi_calc_divisors(struct spi_master *master, +static int ep93xx_spi_calc_divisors(struct spi_controller *host, u32 rate, u8 *div_cpsr, u8 *div_scr) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); unsigned long spi_clk_rate = clk_get_rate(espi->clk); int cpsr, scr; @@ -120,7 +120,7 @@ static int ep93xx_spi_calc_divisors(struct spi_master *master, * Make sure that max value is between values supported by the * controller. */ - rate = clamp(rate, master->min_speed_hz, master->max_speed_hz); + rate = clamp(rate, host->min_speed_hz, host->max_speed_hz); /* * Calculate divisors so that we can get speed according the @@ -143,18 +143,18 @@ static int ep93xx_spi_calc_divisors(struct spi_master *master, return -EINVAL; } -static int ep93xx_spi_chip_setup(struct spi_master *master, +static int ep93xx_spi_chip_setup(struct spi_controller *host, struct spi_device *spi, struct spi_transfer *xfer) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); u8 dss = bits_per_word_to_dss(xfer->bits_per_word); u8 div_cpsr = 0; u8 div_scr = 0; u16 cr0; int err; - err = ep93xx_spi_calc_divisors(master, xfer->speed_hz, + err = ep93xx_spi_calc_divisors(host, xfer->speed_hz, &div_cpsr, &div_scr); if (err) return err; @@ -166,9 +166,9 @@ static int ep93xx_spi_chip_setup(struct spi_master *master, cr0 |= SSPCR0_SPH; cr0 |= dss; - dev_dbg(&master->dev, "setup: mode %d, cpsr %d, scr %d, dss %d\n", + dev_dbg(&host->dev, "setup: mode %d, cpsr %d, scr %d, dss %d\n", spi->mode, div_cpsr, div_scr, dss); - dev_dbg(&master->dev, "setup: cr0 %#x\n", cr0); + dev_dbg(&host->dev, "setup: cr0 %#x\n", cr0); writel(div_cpsr, espi->mmio + SSPCPSR); writel(cr0, espi->mmio + SSPCR0); @@ -176,10 +176,10 @@ static int ep93xx_spi_chip_setup(struct spi_master *master, return 0; } -static void ep93xx_do_write(struct spi_master *master) +static void ep93xx_do_write(struct spi_controller *host) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); - struct spi_transfer *xfer = master->cur_msg->state; + struct ep93xx_spi *espi = spi_controller_get_devdata(host); + struct spi_transfer *xfer = host->cur_msg->state; u32 val = 0; if (xfer->bits_per_word > 8) { @@ -194,10 +194,10 @@ static void ep93xx_do_write(struct spi_master *master) writel(val, espi->mmio + SSPDR); } -static void ep93xx_do_read(struct spi_master *master) +static void ep93xx_do_read(struct spi_controller *host) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); - struct spi_transfer *xfer = master->cur_msg->state; + struct ep93xx_spi *espi = spi_controller_get_devdata(host); + struct spi_transfer *xfer = host->cur_msg->state; u32 val; val = readl(espi->mmio + SSPDR); @@ -214,7 +214,7 @@ static void ep93xx_do_read(struct spi_master *master) /** * ep93xx_spi_read_write() - perform next RX/TX transfer - * @master: SPI master + * @host: SPI host * * This function transfers next bytes (or half-words) to/from RX/TX FIFOs. If * called several times, the whole transfer will be completed. Returns @@ -223,20 +223,20 @@ static void ep93xx_do_read(struct spi_master *master) * When this function is finished, RX FIFO should be empty and TX FIFO should be * full. */ -static int ep93xx_spi_read_write(struct spi_master *master) +static int ep93xx_spi_read_write(struct spi_controller *host) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); - struct spi_transfer *xfer = master->cur_msg->state; + struct ep93xx_spi *espi = spi_controller_get_devdata(host); + struct spi_transfer *xfer = host->cur_msg->state; /* read as long as RX FIFO has frames in it */ while ((readl(espi->mmio + SSPSR) & SSPSR_RNE)) { - ep93xx_do_read(master); + ep93xx_do_read(host); espi->fifo_level--; } /* write as long as TX FIFO has room */ while (espi->fifo_level < SPI_FIFO_SIZE && espi->tx < xfer->len) { - ep93xx_do_write(master); + ep93xx_do_write(host); espi->fifo_level++; } @@ -261,7 +261,7 @@ ep93xx_dma_data_to_trans_dir(enum dma_data_direction dir) /** * ep93xx_spi_dma_prepare() - prepares a DMA transfer - * @master: SPI master + * @host: SPI host * @dir: DMA transfer direction * * Function configures the DMA, maps the buffer and prepares the DMA @@ -269,11 +269,11 @@ ep93xx_dma_data_to_trans_dir(enum dma_data_direction dir) * in case of failure. */ static struct dma_async_tx_descriptor * -ep93xx_spi_dma_prepare(struct spi_master *master, +ep93xx_spi_dma_prepare(struct spi_controller *host, enum dma_data_direction dir) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); - struct spi_transfer *xfer = master->cur_msg->state; + struct ep93xx_spi *espi = spi_controller_get_devdata(host); + struct spi_transfer *xfer = host->cur_msg->state; struct dma_async_tx_descriptor *txd; enum dma_slave_buswidth buswidth; struct dma_slave_config conf; @@ -348,7 +348,7 @@ ep93xx_spi_dma_prepare(struct spi_master *master, } if (WARN_ON(len)) { - dev_warn(&master->dev, "len = %zu expected 0!\n", len); + dev_warn(&host->dev, "len = %zu expected 0!\n", len); return ERR_PTR(-EINVAL); } @@ -367,16 +367,16 @@ ep93xx_spi_dma_prepare(struct spi_master *master, /** * ep93xx_spi_dma_finish() - finishes with a DMA transfer - * @master: SPI master + * @host: SPI host * @dir: DMA transfer direction * * Function finishes with the DMA transfer. After this, the DMA buffer is * unmapped. */ -static void ep93xx_spi_dma_finish(struct spi_master *master, +static void ep93xx_spi_dma_finish(struct spi_controller *host, enum dma_data_direction dir) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); struct dma_chan *chan; struct sg_table *sgt; @@ -393,35 +393,35 @@ static void ep93xx_spi_dma_finish(struct spi_master *master, static void ep93xx_spi_dma_callback(void *callback_param) { - struct spi_master *master = callback_param; + struct spi_controller *host = callback_param; - ep93xx_spi_dma_finish(master, DMA_TO_DEVICE); - ep93xx_spi_dma_finish(master, DMA_FROM_DEVICE); + ep93xx_spi_dma_finish(host, DMA_TO_DEVICE); + ep93xx_spi_dma_finish(host, DMA_FROM_DEVICE); - spi_finalize_current_transfer(master); + spi_finalize_current_transfer(host); } -static int ep93xx_spi_dma_transfer(struct spi_master *master) +static int ep93xx_spi_dma_transfer(struct spi_controller *host) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); struct dma_async_tx_descriptor *rxd, *txd; - rxd = ep93xx_spi_dma_prepare(master, DMA_FROM_DEVICE); + rxd = ep93xx_spi_dma_prepare(host, DMA_FROM_DEVICE); if (IS_ERR(rxd)) { - dev_err(&master->dev, "DMA RX failed: %ld\n", PTR_ERR(rxd)); + dev_err(&host->dev, "DMA RX failed: %ld\n", PTR_ERR(rxd)); return PTR_ERR(rxd); } - txd = ep93xx_spi_dma_prepare(master, DMA_TO_DEVICE); + txd = ep93xx_spi_dma_prepare(host, DMA_TO_DEVICE); if (IS_ERR(txd)) { - ep93xx_spi_dma_finish(master, DMA_FROM_DEVICE); - dev_err(&master->dev, "DMA TX failed: %ld\n", PTR_ERR(txd)); + ep93xx_spi_dma_finish(host, DMA_FROM_DEVICE); + dev_err(&host->dev, "DMA TX failed: %ld\n", PTR_ERR(txd)); return PTR_ERR(txd); } /* We are ready when RX is done */ rxd->callback = ep93xx_spi_dma_callback; - rxd->callback_param = master; + rxd->callback_param = host; /* Now submit both descriptors and start DMA */ dmaengine_submit(rxd); @@ -436,8 +436,8 @@ static int ep93xx_spi_dma_transfer(struct spi_master *master) static irqreturn_t ep93xx_spi_interrupt(int irq, void *dev_id) { - struct spi_master *master = dev_id; - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct spi_controller *host = dev_id; + struct ep93xx_spi *espi = spi_controller_get_devdata(host); u32 val; /* @@ -447,15 +447,15 @@ static irqreturn_t ep93xx_spi_interrupt(int irq, void *dev_id) if (readl(espi->mmio + SSPIIR) & SSPIIR_RORIS) { /* clear the overrun interrupt */ writel(0, espi->mmio + SSPICR); - dev_warn(&master->dev, + dev_warn(&host->dev, "receive overrun, aborting the message\n"); - master->cur_msg->status = -EIO; + host->cur_msg->status = -EIO; } else { /* * Interrupt is either RX (RIS) or TX (TIS). For both cases we * simply execute next data transfer. */ - if (ep93xx_spi_read_write(master)) { + if (ep93xx_spi_read_write(host)) { /* * In normal case, there still is some processing left * for current transfer. Let's wait for the next @@ -474,26 +474,26 @@ static irqreturn_t ep93xx_spi_interrupt(int irq, void *dev_id) val &= ~(SSPCR1_RORIE | SSPCR1_TIE | SSPCR1_RIE); writel(val, espi->mmio + SSPCR1); - spi_finalize_current_transfer(master); + spi_finalize_current_transfer(host); return IRQ_HANDLED; } -static int ep93xx_spi_transfer_one(struct spi_master *master, +static int ep93xx_spi_transfer_one(struct spi_controller *host, struct spi_device *spi, struct spi_transfer *xfer) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); u32 val; int ret; - ret = ep93xx_spi_chip_setup(master, spi, xfer); + ret = ep93xx_spi_chip_setup(host, spi, xfer); if (ret) { - dev_err(&master->dev, "failed to setup chip for transfer\n"); + dev_err(&host->dev, "failed to setup chip for transfer\n"); return ret; } - master->cur_msg->state = xfer; + host->cur_msg->state = xfer; espi->rx = 0; espi->tx = 0; @@ -503,10 +503,10 @@ static int ep93xx_spi_transfer_one(struct spi_master *master, * So in these cases we will be using PIO and don't bother for DMA. */ if (espi->dma_rx && xfer->len > SPI_FIFO_SIZE) - return ep93xx_spi_dma_transfer(master); + return ep93xx_spi_dma_transfer(host); /* Using PIO so prime the TX FIFO and enable interrupts */ - ep93xx_spi_read_write(master); + ep93xx_spi_read_write(host); val = readl(espi->mmio + SSPCR1); val |= (SSPCR1_RORIE | SSPCR1_TIE | SSPCR1_RIE); @@ -516,10 +516,10 @@ static int ep93xx_spi_transfer_one(struct spi_master *master, return 1; } -static int ep93xx_spi_prepare_message(struct spi_master *master, +static int ep93xx_spi_prepare_message(struct spi_controller *host, struct spi_message *msg) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); unsigned long timeout; /* @@ -528,7 +528,7 @@ static int ep93xx_spi_prepare_message(struct spi_master *master, timeout = jiffies + msecs_to_jiffies(SPI_TIMEOUT); while (readl(espi->mmio + SSPSR) & SSPSR_RNE) { if (time_after(jiffies, timeout)) { - dev_warn(&master->dev, + dev_warn(&host->dev, "timeout while flushing RX FIFO\n"); return -ETIMEDOUT; } @@ -544,9 +544,9 @@ static int ep93xx_spi_prepare_message(struct spi_master *master, return 0; } -static int ep93xx_spi_prepare_hardware(struct spi_master *master) +static int ep93xx_spi_prepare_hardware(struct spi_controller *host) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); u32 val; int ret; @@ -561,9 +561,9 @@ static int ep93xx_spi_prepare_hardware(struct spi_master *master) return 0; } -static int ep93xx_spi_unprepare_hardware(struct spi_master *master) +static int ep93xx_spi_unprepare_hardware(struct spi_controller *host) { - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); u32 val; val = readl(espi->mmio + SSPCR1); @@ -646,7 +646,7 @@ static void ep93xx_spi_release_dma(struct ep93xx_spi *espi) static int ep93xx_spi_probe(struct platform_device *pdev) { - struct spi_master *master; + struct spi_controller *host; struct ep93xx_spi_info *info; struct ep93xx_spi *espi; struct resource *res; @@ -663,54 +663,54 @@ static int ep93xx_spi_probe(struct platform_device *pdev) if (irq < 0) return irq; - master = spi_alloc_master(&pdev->dev, sizeof(*espi)); - if (!master) + host = spi_alloc_host(&pdev->dev, sizeof(*espi)); + if (!host) return -ENOMEM; - master->use_gpio_descriptors = true; - master->prepare_transfer_hardware = ep93xx_spi_prepare_hardware; - master->unprepare_transfer_hardware = ep93xx_spi_unprepare_hardware; - master->prepare_message = ep93xx_spi_prepare_message; - master->transfer_one = ep93xx_spi_transfer_one; - master->bus_num = pdev->id; - master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; - master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); + host->use_gpio_descriptors = true; + host->prepare_transfer_hardware = ep93xx_spi_prepare_hardware; + host->unprepare_transfer_hardware = ep93xx_spi_unprepare_hardware; + host->prepare_message = ep93xx_spi_prepare_message; + host->transfer_one = ep93xx_spi_transfer_one; + host->bus_num = pdev->id; + host->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + host->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); /* * The SPI core will count the number of GPIO descriptors to figure * out the number of chip selects available on the platform. */ - master->num_chipselect = 0; + host->num_chipselect = 0; - platform_set_drvdata(pdev, master); + platform_set_drvdata(pdev, host); - espi = spi_master_get_devdata(master); + espi = spi_controller_get_devdata(host); espi->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(espi->clk)) { dev_err(&pdev->dev, "unable to get spi clock\n"); error = PTR_ERR(espi->clk); - goto fail_release_master; + goto fail_release_host; } /* * Calculate maximum and minimum supported clock rates * for the controller. */ - master->max_speed_hz = clk_get_rate(espi->clk) / 2; - master->min_speed_hz = clk_get_rate(espi->clk) / (254 * 256); + host->max_speed_hz = clk_get_rate(espi->clk) / 2; + host->min_speed_hz = clk_get_rate(espi->clk) / (254 * 256); espi->mmio = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(espi->mmio)) { error = PTR_ERR(espi->mmio); - goto fail_release_master; + goto fail_release_host; } espi->sspdr_phys = res->start + SSPDR; error = devm_request_irq(&pdev->dev, irq, ep93xx_spi_interrupt, - 0, "ep93xx-spi", master); + 0, "ep93xx-spi", host); if (error) { dev_err(&pdev->dev, "failed to request irq\n"); - goto fail_release_master; + goto fail_release_host; } if (info->use_dma && ep93xx_spi_setup_dma(espi)) @@ -719,9 +719,9 @@ static int ep93xx_spi_probe(struct platform_device *pdev) /* make sure that the hardware is disabled */ writel(0, espi->mmio + SSPCR1); - error = devm_spi_register_master(&pdev->dev, master); + error = devm_spi_register_controller(&pdev->dev, host); if (error) { - dev_err(&pdev->dev, "failed to register SPI master\n"); + dev_err(&pdev->dev, "failed to register SPI host\n"); goto fail_free_dma; } @@ -732,16 +732,16 @@ static int ep93xx_spi_probe(struct platform_device *pdev) fail_free_dma: ep93xx_spi_release_dma(espi); -fail_release_master: - spi_master_put(master); +fail_release_host: + spi_controller_put(host); return error; } static void ep93xx_spi_remove(struct platform_device *pdev) { - struct spi_master *master = platform_get_drvdata(pdev); - struct ep93xx_spi *espi = spi_master_get_devdata(master); + struct spi_controller *host = platform_get_drvdata(pdev); + struct ep93xx_spi *espi = spi_controller_get_devdata(host); ep93xx_spi_release_dma(espi); } |