mmc: remove cns3xxx driver

The cns3xxx platform is gone, so this driver is now orphaned.

Cc: Krzysztof Halasa <khalasa@piap.pl>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 113 deletions

diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c
deleted file mode 100644
index 2a29c7a4f308..000000000000
--- a/drivers/mmc/host/sdhci-cns3xxx.c
+++ /dev/null
@@ -1,113 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * SDHCI support for CNS3xxx SoC
- *
- * Copyright 2008 Cavium Networks
- * Copyright 2010 MontaVista Software, LLC.
- *
- * Authors: Scott Shu
- *	    Anton Vorontsov <avorontsov@mvista.com>
- */
-
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/mmc/host.h>
-#include <linux/module.h>
-#include "sdhci-pltfm.h"
-
-static unsigned int sdhci_cns3xxx_get_max_clk(struct sdhci_host *host)
-{
-	return 150000000;
-}
-
-static void sdhci_cns3xxx_set_clock(struct sdhci_host *host, unsigned int clock)
-{
-	struct device *dev = mmc_dev(host->mmc);
-	int div = 1;
-	u16 clk;
-	unsigned long timeout;
-
-	host->mmc->actual_clock = 0;
-
-	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
-
-	if (clock == 0)
-		return;
-
-	while (host->max_clk / div > clock) {
-		/*
-		 * On CNS3xxx divider grows linearly up to 4, and then
-		 * exponentially up to 256.
-		 */
-		if (div < 4)
-			div += 1;
-		else if (div < 256)
-			div *= 2;
-		else
-			break;
-	}
-
-	dev_dbg(dev, "desired SD clock: %d, actual: %d\n",
-		clock, host->max_clk / div);
-
-	/* Divide by 3 is special. */
-	if (div != 3)
-		div >>= 1;
-
-	clk = div << SDHCI_DIVIDER_SHIFT;
-	clk |= SDHCI_CLOCK_INT_EN;
-	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
-
-	timeout = 20;
-	while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
-			& SDHCI_CLOCK_INT_STABLE)) {
-		if (timeout == 0) {
-			dev_warn(dev, "clock is unstable");
-			break;
-		}
-		timeout--;
-		mdelay(1);
-	}
-
-	clk |= SDHCI_CLOCK_CARD_EN;
-	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
-}
-
-static const struct sdhci_ops sdhci_cns3xxx_ops = {
-	.get_max_clock	= sdhci_cns3xxx_get_max_clk,
-	.set_clock	= sdhci_cns3xxx_set_clock,
-	.set_bus_width	= sdhci_set_bus_width,
-	.reset          = sdhci_reset,
-	.set_uhs_signaling = sdhci_set_uhs_signaling,
-};
-
-static const struct sdhci_pltfm_data sdhci_cns3xxx_pdata = {
-	.ops = &sdhci_cns3xxx_ops,
-	.quirks = SDHCI_QUIRK_BROKEN_DMA |
-		  SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
-		  SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
-		  SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
-		  SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
-};
-
-static int sdhci_cns3xxx_probe(struct platform_device *pdev)
-{
-	return sdhci_pltfm_register(pdev, &sdhci_cns3xxx_pdata, 0);
-}
-
-static struct platform_driver sdhci_cns3xxx_driver = {
-	.driver		= {
-		.name	= "sdhci-cns3xxx",
-		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
-		.pm	= &sdhci_pltfm_pmops,
-	},
-	.probe		= sdhci_cns3xxx_probe,
-	.remove		= sdhci_pltfm_unregister,
-};
-
-module_platform_driver(sdhci_cns3xxx_driver);
-
-MODULE_DESCRIPTION("SDHCI driver for CNS3xxx");
-MODULE_AUTHOR("Scott Shu, "
-	      "Anton Vorontsov <avorontsov@mvista.com>");
-MODULE_LICENSE("GPL v2");