diff options
Diffstat (limited to 'drivers/spi/spi-xlp.c')
| -rw-r--r-- | drivers/spi/spi-xlp.c | 78 |
1 files changed, 29 insertions, 49 deletions
diff --git a/drivers/spi/spi-xlp.c b/drivers/spi/spi-xlp.c index 74a01b09a8a5..2fec18b68449 100644 --- a/drivers/spi/spi-xlp.c +++ b/drivers/spi/spi-xlp.c @@ -1,15 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2003-2015 Broadcom Corporation * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 (GPL v2) - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/acpi.h> #include <linux/clk.h> @@ -17,7 +9,6 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/spi/spi.h> -#include <linux/of.h> #include <linux/interrupt.h> /* SPI Configuration Register */ @@ -104,7 +95,7 @@ struct xlp_spi_priv { int rx_len; /* rx xfer length */ int txerrors; /* TXFIFO underflow count */ int rxerrors; /* RXFIFO overflow count */ - int cs; /* slave device chip select */ + int cs; /* target device chip select */ u32 spi_clk; /* spi clock frequency */ bool cmd_cont; /* cs active */ struct completion done; /* completion notification */ @@ -147,8 +138,8 @@ static int xlp_spi_setup(struct spi_device *spi) u32 fdiv, cfg; int cs; - xspi = spi_master_get_devdata(spi->master); - cs = spi->chip_select; + xspi = spi_controller_get_devdata(spi->controller); + cs = spi_get_chipselect(spi, 0); /* * The value of fdiv must be between 4 and 65535. */ @@ -279,7 +270,7 @@ static int xlp_spi_xfer_block(struct xlp_spi_priv *xs, const unsigned char *tx_buf, unsigned char *rx_buf, int xfer_len, int cmd_cont) { - int timeout; + unsigned long time_left; u32 intr_mask = 0; xs->tx_buf = tx_buf; @@ -308,11 +299,11 @@ static int xlp_spi_xfer_block(struct xlp_spi_priv *xs, intr_mask |= XLP_SPI_INTR_DONE; xlp_spi_reg_write(xs, xs->cs, XLP_SPI_INTR_EN, intr_mask); - timeout = wait_for_completion_timeout(&xs->done, - msecs_to_jiffies(1000)); + time_left = wait_for_completion_timeout(&xs->done, + msecs_to_jiffies(1000)); /* Disable interrupts */ xlp_spi_reg_write(xs, xs->cs, XLP_SPI_INTR_EN, 0x0); - if (!timeout) { + if (!time_left) { dev_err(&xs->dev, "xfer timedout!\n"); goto out; } @@ -352,17 +343,17 @@ static int xlp_spi_txrx_bufs(struct xlp_spi_priv *xs, struct spi_transfer *t) return bytesleft; } -static int xlp_spi_transfer_one(struct spi_master *master, +static int xlp_spi_transfer_one(struct spi_controller *host, struct spi_device *spi, struct spi_transfer *t) { - struct xlp_spi_priv *xspi = spi_master_get_devdata(master); + struct xlp_spi_priv *xspi = spi_controller_get_devdata(host); int ret = 0; - xspi->cs = spi->chip_select; + xspi->cs = spi_get_chipselect(spi, 0); xspi->dev = spi->dev; - if (spi_transfer_is_last(master, t)) + if (spi_transfer_is_last(host, t)) xspi->cmd_cont = 0; else xspi->cmd_cont = 1; @@ -370,15 +361,14 @@ static int xlp_spi_transfer_one(struct spi_master *master, if (xlp_spi_txrx_bufs(xspi, t)) ret = -EIO; - spi_finalize_current_transfer(master); + spi_finalize_current_transfer(host); return ret; } static int xlp_spi_probe(struct platform_device *pdev) { - struct spi_master *master; + struct spi_controller *host; struct xlp_spi_priv *xspi; - struct resource *res; struct clk *clk; int irq, err; @@ -386,16 +376,13 @@ static int xlp_spi_probe(struct platform_device *pdev) if (!xspi) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - xspi->base = devm_ioremap_resource(&pdev->dev, res); + xspi->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(xspi->base)) return PTR_ERR(xspi->base); irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "no IRQ resource found: %d\n", irq); + if (irq < 0) return irq; - } err = devm_request_irq(&pdev->dev, irq, xlp_spi_interrupt, 0, pdev->name, xspi); if (err) { @@ -411,28 +398,28 @@ static int xlp_spi_probe(struct platform_device *pdev) xspi->spi_clk = clk_get_rate(clk); - master = spi_alloc_master(&pdev->dev, 0); - if (!master) { - dev_err(&pdev->dev, "could not alloc master\n"); + host = spi_alloc_host(&pdev->dev, 0); + if (!host) { + dev_err(&pdev->dev, "could not alloc host\n"); return -ENOMEM; } - master->bus_num = 0; - master->num_chipselect = XLP_SPI_MAX_CS; - master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; - master->setup = xlp_spi_setup; - master->transfer_one = xlp_spi_transfer_one; - master->dev.of_node = pdev->dev.of_node; + host->bus_num = 0; + host->num_chipselect = XLP_SPI_MAX_CS; + host->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + host->setup = xlp_spi_setup; + host->transfer_one = xlp_spi_transfer_one; + host->dev.of_node = pdev->dev.of_node; init_completion(&xspi->done); - spi_master_set_devdata(master, xspi); + spi_controller_set_devdata(host, xspi); xlp_spi_sysctl_setup(xspi); /* register spi controller */ - err = devm_spi_register_master(&pdev->dev, master); + err = devm_spi_register_controller(&pdev->dev, host); if (err) { - dev_err(&pdev->dev, "spi register master failed!\n"); - spi_master_put(master); + dev_err(&pdev->dev, "spi register host failed!\n"); + spi_controller_put(host); return err; } @@ -448,17 +435,10 @@ static const struct acpi_device_id xlp_spi_acpi_match[] = { MODULE_DEVICE_TABLE(acpi, xlp_spi_acpi_match); #endif -static const struct of_device_id xlp_spi_dt_id[] = { - { .compatible = "netlogic,xlp832-spi" }, - { }, -}; -MODULE_DEVICE_TABLE(of, xlp_spi_dt_id); - static struct platform_driver xlp_spi_driver = { .probe = xlp_spi_probe, .driver = { .name = "xlp-spi", - .of_match_table = xlp_spi_dt_id, .acpi_match_table = ACPI_PTR(xlp_spi_acpi_match), }, }; |