ARM i.MX53: remove platform ahci support (e27da53b) · Commits · e / devices / android_kernel_samsung_universal8895

arch/arm/mach-imx/devices/Kconfig

+0 −4

Original line number	Original line	Diff line number	Diff line
	@@ -86,7 +86,3 @@ config IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX

	config IMX_HAVE_PLATFORM_SPI_IMX		config IMX_HAVE_PLATFORM_SPI_IMX
	bool		bool

	config IMX_HAVE_PLATFORM_AHCI
	bool
	default y if ARCH_MX53

arch/arm/mach-imx/devices/Makefile

+0 −1

Original line number	Original line	Diff line number	Diff line
	@@ -29,5 +29,4 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_RTC) += platform-mxc_rtc.o
	obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_W1) += platform-mxc_w1.o		obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_W1) += platform-mxc_w1.o
	obj-$(CONFIG_IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX) += platform-sdhci-esdhc-imx.o		obj-$(CONFIG_IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX) += platform-sdhci-esdhc-imx.o
	obj-$(CONFIG_IMX_HAVE_PLATFORM_SPI_IMX) += platform-spi_imx.o		obj-$(CONFIG_IMX_HAVE_PLATFORM_SPI_IMX) += platform-spi_imx.o
	obj-$(CONFIG_IMX_HAVE_PLATFORM_AHCI) += platform-ahci-imx.o
	obj-$(CONFIG_IMX_HAVE_PLATFORM_MX2_EMMA) += platform-mx2-emma.o		obj-$(CONFIG_IMX_HAVE_PLATFORM_MX2_EMMA) += platform-mx2-emma.o

arch/arm/mach-imx/devices/devices-common.h

+0 −10

Original line number	Original line	Diff line number	Diff line
	@@ -344,13 +344,3 @@ struct platform_device imx_add_imx_dma(char name, resource_size_t iobase,
	int irq, int irq_err);		int irq, int irq_err);
	struct platform_device imx_add_imx_sdma(char name,		struct platform_device imx_add_imx_sdma(char name,
	resource_size_t iobase, int irq, struct sdma_platform_data *pdata);		resource_size_t iobase, int irq, struct sdma_platform_data *pdata);

	#include <linux/ahci_platform.h>
	struct imx_ahci_imx_data {
	const char *devid;
	resource_size_t iobase;
	resource_size_t irq;
	};
	struct platform_device *__init imx_add_ahci_imx(
	const struct imx_ahci_imx_data *data,
	const struct ahci_platform_data *pdata);

arch/arm/mach-imx/devices/platform-ahci-imx.c

deleted100644 → 0

+0 −157

Original line number	Original line	Diff line number	Diff line
	/*
	* Copyright (C) 2011 Freescale Semiconductor, Inc. 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 as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.

	* 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.

	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include <linux/io.h>
	#include <linux/clk.h>
	#include <linux/err.h>
	#include <linux/device.h>
	#include <linux/dma-mapping.h>
	#include <asm/sizes.h>

	#include "../hardware.h"
	#include "devices-common.h"

	#define imx_ahci_imx_data_entry_single(soc, _devid) \
	{ \
	.devid = _devid, \
	.iobase = soc ## _SATA_BASE_ADDR, \
	.irq = soc ## _INT_SATA, \
	}

	#ifdef CONFIG_SOC_IMX53
	const struct imx_ahci_imx_data imx53_ahci_imx_data __initconst =
	imx_ahci_imx_data_entry_single(MX53, "imx53-ahci");
	#endif

	enum {
	HOST_CAP = 0x00,
	HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
	HOST_PORTS_IMPL = 0x0c,
	HOST_TIMER1MS = 0xe0, /* Timer 1-ms */
	};

	static struct clk sata_clk, sata_ref_clk;

	/* AHCI module Initialization, if return 0, initialization is successful. */
	static int imx_sata_init(struct device dev, void __iomem addr)
	{
	u32 tmpdata;
	int ret = 0;
	struct clk *clk;

	sata_clk = clk_get(dev, "ahci");
	if (IS_ERR(sata_clk)) {
	dev_err(dev, "no sata clock.\n");
	return PTR_ERR(sata_clk);
	}
	ret = clk_prepare_enable(sata_clk);
	if (ret) {
	dev_err(dev, "can't prepare/enable sata clock.\n");
	goto put_sata_clk;
	}

	/* Get the AHCI SATA PHY CLK */
	sata_ref_clk = clk_get(dev, "ahci_phy");
	if (IS_ERR(sata_ref_clk)) {
	dev_err(dev, "no sata ref clock.\n");
	ret = PTR_ERR(sata_ref_clk);
	goto release_sata_clk;
	}
	ret = clk_prepare_enable(sata_ref_clk);
	if (ret) {
	dev_err(dev, "can't prepare/enable sata ref clock.\n");
	goto put_sata_ref_clk;
	}

	/* Get the AHB clock rate, and configure the TIMER1MS reg later */
	clk = clk_get(dev, "ahci_dma");
	if (IS_ERR(clk)) {
	dev_err(dev, "no dma clock.\n");
	ret = PTR_ERR(clk);
	goto release_sata_ref_clk;
	}
	tmpdata = clk_get_rate(clk) / 1000;
	clk_put(clk);

	writel(tmpdata, addr + HOST_TIMER1MS);

	tmpdata = readl(addr + HOST_CAP);
	if (!(tmpdata & HOST_CAP_SSS)) {
	tmpdata \|= HOST_CAP_SSS;
	writel(tmpdata, addr + HOST_CAP);
	}

	if (!(readl(addr + HOST_PORTS_IMPL) & 0x1))
	writel((readl(addr + HOST_PORTS_IMPL) \| 0x1),
	addr + HOST_PORTS_IMPL);

	return 0;

	release_sata_ref_clk:
	clk_disable_unprepare(sata_ref_clk);
	put_sata_ref_clk:
	clk_put(sata_ref_clk);
	release_sata_clk:
	clk_disable_unprepare(sata_clk);
	put_sata_clk:
	clk_put(sata_clk);

	return ret;
	}

	static void imx_sata_exit(struct device *dev)
	{
	clk_disable_unprepare(sata_ref_clk);
	clk_put(sata_ref_clk);

	clk_disable_unprepare(sata_clk);
	clk_put(sata_clk);

	}
	struct platform_device *__init imx_add_ahci_imx(
	const struct imx_ahci_imx_data *data,
	const struct ahci_platform_data *pdata)
	{
	struct resource res[] = {
	{
	.start = data->iobase,
	.end = data->iobase + SZ_4K - 1,
	.flags = IORESOURCE_MEM,
	}, {
	.start = data->irq,
	.end = data->irq,
	.flags = IORESOURCE_IRQ,
	},
	};

	return imx_add_platform_device_dmamask(data->devid, 0,
	res, ARRAY_SIZE(res),
	pdata, sizeof(*pdata), DMA_BIT_MASK(32));
	}

	struct platform_device *__init imx53_add_ahci_imx(void)
	{
	struct ahci_platform_data pdata = {
	.init = imx_sata_init,
	.exit = imx_sata_exit,
	};

	return imx_add_ahci_imx(&imx53_ahci_imx_data, &pdata);
	}