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Message-Id: <20221019150410.3851944-3-arnd@kernel.org>
Date: Wed, 19 Oct 2022 17:03:25 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: linux-arm-kernel@...ts.infradead.org,
Ulf Hansson <ulf.hansson@...aro.org>,
Adrian Hunter <adrian.hunter@...el.com>
Cc: linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
Krzysztof Halasa <khalasa@...p.pl>, linux-mmc@...r.kernel.org
Subject: [PATCH 03/17] mmc: remove cns3xxx driver
From: Arnd Bergmann <arnd@...db.de>
The cns3xxx platform is gone, so this driver is now orphaned.
Cc: Krzysztof Halasa <khalasa@...p.pl>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
drivers/mmc/host/Kconfig | 11 ---
drivers/mmc/host/Makefile | 1 -
drivers/mmc/host/sdhci-cns3xxx.c | 113 -------------------------------
3 files changed, 125 deletions(-)
delete mode 100644 drivers/mmc/host/sdhci-cns3xxx.c
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index f324daadaf70..1c5b1c48a230 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -253,17 +253,6 @@ config MMC_SDHCI_CADENCE
If unsure, say N.
-config MMC_SDHCI_CNS3XXX
- tristate "SDHCI support on the Cavium Networks CNS3xxx SoC"
- depends on ARCH_CNS3XXX || COMPILE_TEST
- depends on MMC_SDHCI_PLTFM
- help
- This selects the SDHCI support for CNS3xxx System-on-Chip devices.
-
- If you have a controller with this interface, say Y or M here.
-
- If unsure, say N.
-
config MMC_SDHCI_ESDHC_MCF
tristate "SDHCI support for the Freescale eSDHC ColdFire controller"
depends on M5441x
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 4e4ceb32c4b4..7bea77c28b7e 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -77,7 +77,6 @@ obj-$(CONFIG_MMC_REALTEK_USB) += rtsx_usb_sdmmc.o
obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
obj-$(CONFIG_MMC_SDHCI_CADENCE) += sdhci-cadence.o
-obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o
obj-$(CONFIG_MMC_SDHCI_ESDHC_MCF) += sdhci-esdhc-mcf.o
obj-$(CONFIG_MMC_SDHCI_ESDHC_IMX) += sdhci-esdhc-imx.o
obj-$(CONFIG_MMC_SDHCI_DOVE) += sdhci-dove.o
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@...sta.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@...sta.com>");
-MODULE_LICENSE("GPL v2");
--
2.29.2
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