diff options
Diffstat (limited to 'drivers/spi/spi-sh-hspi.c')
| -rw-r--r-- | drivers/spi/spi-sh-hspi.c | 60 |
1 files changed, 23 insertions, 37 deletions
diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c index 20e800e70442..93017faeb7b5 100644 --- a/drivers/spi/spi-sh-hspi.c +++ b/drivers/spi/spi-sh-hspi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * SuperH HSPI bus driver * @@ -7,15 +8,6 @@ * Based on pxa2xx_spi.c: * Copyright (C) 2011 Renesas Solutions Corp. * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * 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/clk.h> @@ -43,7 +35,7 @@ struct hspi_priv { void __iomem *addr; - struct spi_master *master; + struct spi_controller *ctlr; struct device *dev; struct clk *clk; }; @@ -90,7 +82,7 @@ static int hspi_status_check_timeout(struct hspi_priv *hspi, u32 mask, u32 val) } /* - * spi master function + * spi host function */ #define hspi_hw_cs_enable(hspi) hspi_hw_cs_ctrl(hspi, 0) @@ -148,10 +140,10 @@ static void hspi_hw_setup(struct hspi_priv *hspi, hspi_write(hspi, SPSCR, 0x21); /* master mode / CS control */ } -static int hspi_transfer_one_message(struct spi_master *master, +static int hspi_transfer_one_message(struct spi_controller *ctlr, struct spi_message *msg) { - struct hspi_priv *hspi = spi_master_get_devdata(master); + struct hspi_priv *hspi = spi_controller_get_devdata(ctlr); struct spi_transfer *t; u32 tx; u32 rx; @@ -198,8 +190,7 @@ static int hspi_transfer_one_message(struct spi_master *master, msg->actual_length += t->len; - if (t->delay_usecs) - udelay(t->delay_usecs); + spi_transfer_delay_exec(t); if (cs_change) { ndelay(nsecs); @@ -213,7 +204,7 @@ static int hspi_transfer_one_message(struct spi_master *master, ndelay(nsecs); hspi_hw_cs_disable(hspi); } - spi_finalize_current_message(master); + spi_finalize_current_message(ctlr); return ret; } @@ -221,7 +212,7 @@ static int hspi_transfer_one_message(struct spi_master *master, static int hspi_probe(struct platform_device *pdev) { struct resource *res; - struct spi_master *master; + struct spi_controller *ctlr; struct hspi_priv *hspi; struct clk *clk; int ret; @@ -233,11 +224,9 @@ static int hspi_probe(struct platform_device *pdev) return -EINVAL; } - master = spi_alloc_master(&pdev->dev, sizeof(*hspi)); - if (!master) { - dev_err(&pdev->dev, "spi_alloc_master error.\n"); + ctlr = spi_alloc_host(&pdev->dev, sizeof(*hspi)); + if (!ctlr) return -ENOMEM; - } clk = clk_get(&pdev->dev, NULL); if (IS_ERR(clk)) { @@ -246,33 +235,32 @@ static int hspi_probe(struct platform_device *pdev) goto error0; } - hspi = spi_master_get_devdata(master); + hspi = spi_controller_get_devdata(ctlr); platform_set_drvdata(pdev, hspi); /* init hspi */ - hspi->master = master; + hspi->ctlr = ctlr; hspi->dev = &pdev->dev; hspi->clk = clk; hspi->addr = devm_ioremap(hspi->dev, res->start, resource_size(res)); if (!hspi->addr) { - dev_err(&pdev->dev, "ioremap error.\n"); ret = -ENOMEM; goto error1; } pm_runtime_enable(&pdev->dev); - master->bus_num = pdev->id; - master->mode_bits = SPI_CPOL | SPI_CPHA; - master->dev.of_node = pdev->dev.of_node; - master->auto_runtime_pm = true; - master->transfer_one_message = hspi_transfer_one_message; - master->bits_per_word_mask = SPI_BPW_MASK(8); + ctlr->bus_num = pdev->id; + ctlr->mode_bits = SPI_CPOL | SPI_CPHA; + ctlr->dev.of_node = pdev->dev.of_node; + ctlr->auto_runtime_pm = true; + ctlr->transfer_one_message = hspi_transfer_one_message; + ctlr->bits_per_word_mask = SPI_BPW_MASK(8); - ret = devm_spi_register_master(&pdev->dev, master); + ret = devm_spi_register_controller(&pdev->dev, ctlr); if (ret < 0) { - dev_err(&pdev->dev, "spi_register_master error.\n"); + dev_err(&pdev->dev, "devm_spi_register_controller error.\n"); goto error2; } @@ -283,20 +271,18 @@ static int hspi_probe(struct platform_device *pdev) error1: clk_put(clk); error0: - spi_master_put(master); + spi_controller_put(ctlr); return ret; } -static int hspi_remove(struct platform_device *pdev) +static void hspi_remove(struct platform_device *pdev) { struct hspi_priv *hspi = platform_get_drvdata(pdev); pm_runtime_disable(&pdev->dev); clk_put(hspi->clk); - - return 0; } static const struct of_device_id hspi_of_match[] = { @@ -316,6 +302,6 @@ static struct platform_driver hspi_driver = { module_platform_driver(hspi_driver); MODULE_DESCRIPTION("SuperH HSPI bus driver"); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); MODULE_ALIAS("platform:sh-hspi"); |