linux-stable/drivers/ata/pata_ftide010.c

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ata: Add driver for Faraday Technology FTIDE010 This adds a driver for the Faraday Technology FTIDE010 PATA IP block. When used with the Storlink/Storm/Cortina Systems Gemini SoC, the PATA interface is accompanied by a PATA<->SATA bridge, so while the device appear as a PATA controller, it attaches physically to SATA disks, and also has a designated memory area with registers to set up the bridge. The Gemini SATA bridge is separated into its own driver file to make things modular and make it possible to reuse the PATA driver as stand-alone on other systems than the Gemini. dmesg excerpt from the D-Link DIR-685 storage router: gemini-sata-bridge 46000000.sata: SATA ID 00000e00, PHY ID: 01000100 gemini-sata-bridge 46000000.sata: set up the Gemini IDE/SATA nexus ftide010 63000000.ata: set up Gemini PATA0 ftide010 63000000.ata: device ID 00000500, irq 26, io base 0x63000000 ftide010 63000000.ata: SATA0 (master) start gemini-sata-bridge 46000000.sata: SATA0 PHY ready scsi host0: pata-ftide010 ata1: PATA max UDMA/133 irq 26 ata1.00: ATA-8: INTEL SSDSA2CW120G3, 4PC10302, max UDMA/133 ata1.00: 234441648 sectors, multi 1: LBA48 NCQ (depth 0/32) ata1.00: configured for UDMA/133 scsi 0:0:0:0: Direct-Access ATA INTEL SSDSA2CW12 0302 PQ: 0 ANSI: 5 ata1.00: Enabling discard_zeroes_data sd 0:0:0:0: [sda] 234441648 512-byte logical blocks: (120 GB/112 GiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA ata1.00: Enabling discard_zeroes_data ata1.00: Enabling discard_zeroes_data sd 0:0:0:0: [sda] Attached SCSI disk After this I can flawlessly mount and read/write copy etc files from /dev/sda[n]. Cc: John Feng-Hsin Chiang <john453@faraday-tech.com> Cc: Greentime Hu <green.hu@gmail.com> Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-04 08:50:08 +00:00
/*
* Faraday Technology FTIDE010 driver
* Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
*
* Includes portions of the SL2312/SL3516/Gemini PATA driver
* Copyright (C) 2003 StorLine, Inc <jason@storlink.com.tw>
* Copyright (C) 2009 Janos Laube <janos.dev@gmail.com>
* Copyright (C) 2010 Frederic Pecourt <opengemini@free.fr>
* Copyright (C) 2011 Tobias Waldvogel <tobias.waldvogel@gmail.com>
*/
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/libata.h>
#include <linux/bitops.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include "sata_gemini.h"
#define DRV_NAME "pata_ftide010"
/**
* struct ftide010 - state container for the Faraday FTIDE010
* @dev: pointer back to the device representing this controller
* @base: remapped I/O space address
* @pclk: peripheral clock for the IDE block
* @host: pointer to the ATA host for this device
* @master_cbl: master cable type
* @slave_cbl: slave cable type
* @sg: Gemini SATA bridge pointer, if running on the Gemini
* @master_to_sata0: Gemini SATA bridge: the ATA master is connected
* to the SATA0 bridge
* @slave_to_sata0: Gemini SATA bridge: the ATA slave is connected
* to the SATA0 bridge
* @master_to_sata1: Gemini SATA bridge: the ATA master is connected
* to the SATA1 bridge
* @slave_to_sata1: Gemini SATA bridge: the ATA slave is connected
* to the SATA1 bridge
*/
struct ftide010 {
struct device *dev;
void __iomem *base;
struct clk *pclk;
struct ata_host *host;
unsigned int master_cbl;
unsigned int slave_cbl;
/* Gemini-specific properties */
struct sata_gemini *sg;
bool master_to_sata0;
bool slave_to_sata0;
bool master_to_sata1;
bool slave_to_sata1;
};
#define FTIDE010_DMA_REG 0x00
#define FTIDE010_DMA_STATUS 0x02
#define FTIDE010_IDE_BMDTPR 0x04
#define FTIDE010_IDE_DEVICE_ID 0x08
#define FTIDE010_PIO_TIMING 0x10
#define FTIDE010_MWDMA_TIMING 0x11
#define FTIDE010_UDMA_TIMING0 0x12 /* Master */
#define FTIDE010_UDMA_TIMING1 0x13 /* Slave */
#define FTIDE010_CLK_MOD 0x14
/* These registers are mapped directly to the IDE registers */
#define FTIDE010_CMD_DATA 0x20
#define FTIDE010_ERROR_FEATURES 0x21
#define FTIDE010_NSECT 0x22
#define FTIDE010_LBAL 0x23
#define FTIDE010_LBAM 0x24
#define FTIDE010_LBAH 0x25
#define FTIDE010_DEVICE 0x26
#define FTIDE010_STATUS_COMMAND 0x27
#define FTIDE010_ALTSTAT_CTRL 0x36
/* Set this bit for UDMA mode 5 and 6 */
#define FTIDE010_UDMA_TIMING_MODE_56 BIT(7)
/* 0 = 50 MHz, 1 = 66 MHz */
#define FTIDE010_CLK_MOD_DEV0_CLK_SEL BIT(0)
#define FTIDE010_CLK_MOD_DEV1_CLK_SEL BIT(1)
/* Enable UDMA on a device */
#define FTIDE010_CLK_MOD_DEV0_UDMA_EN BIT(4)
#define FTIDE010_CLK_MOD_DEV1_UDMA_EN BIT(5)
static struct scsi_host_template pata_ftide010_sht = {
ATA_BMDMA_SHT(DRV_NAME),
};
/*
* Bus timings
*
* The unit of the below required timings is two clock periods of the ATA
* reference clock which is 30 nanoseconds per unit at 66MHz and 20
* nanoseconds per unit at 50 MHz. The PIO timings assume 33MHz speed for
* PIO.
*
* pio_active_time: array of 5 elements for T2 timing for Mode 0,
* 1, 2, 3 and 4. Range 0..15.
* pio_recovery_time: array of 5 elements for T2l timing for Mode 0,
* 1, 2, 3 and 4. Range 0..15.
* mdma_50_active_time: array of 4 elements for Td timing for multi
* word DMA, Mode 0, 1, and 2 at 50 MHz. Range 0..15.
* mdma_50_recovery_time: array of 4 elements for Tk timing for
* multi word DMA, Mode 0, 1 and 2 at 50 MHz. Range 0..15.
* mdma_66_active_time: array of 4 elements for Td timing for multi
* word DMA, Mode 0, 1 and 2 at 66 MHz. Range 0..15.
* mdma_66_recovery_time: array of 4 elements for Tk timing for
* multi word DMA, Mode 0, 1 and 2 at 66 MHz. Range 0..15.
* udma_50_setup_time: array of 4 elements for Tvds timing for ultra
* DMA, Mode 0, 1, 2, 3, 4 and 5 at 50 MHz. Range 0..7.
* udma_50_hold_time: array of 4 elements for Tdvh timing for
* multi word DMA, Mode 0, 1, 2, 3, 4 and 5 at 50 MHz, Range 0..7.
* udma_66_setup_time: array of 4 elements for Tvds timing for multi
* word DMA, Mode 0, 1, 2, 3, 4, 5 and 6 at 66 MHz. Range 0..7.
* udma_66_hold_time: array of 4 elements for Tdvh timing for
* multi word DMA, Mode 0, 1, 2, 3, 4, 5 and 6 at 66 MHz. Range 0..7.
*/
static const u8 pio_active_time[5] = {10, 10, 10, 3, 3};
static const u8 pio_recovery_time[5] = {10, 3, 1, 3, 1};
static const u8 mwdma_50_active_time[3] = {6, 2, 2};
static const u8 mwdma_50_recovery_time[3] = {6, 2, 1};
static const u8 mwdma_66_active_time[3] = {8, 3, 3};
static const u8 mwdma_66_recovery_time[3] = {8, 2, 1};
static const u8 udma_50_setup_time[6] = {3, 3, 2, 2, 1, 1};
static const u8 udma_50_hold_time[6] = {3, 1, 1, 1, 1, 1};
static const u8 udma_66_setup_time[7] = {4, 4, 3, 2, };
static const u8 udma_66_hold_time[7] = {};
/*
* We set 66 MHz for all MWDMA modes
*/
static const bool set_mdma_66_mhz[] = { true, true, true, true };
/*
* We set 66 MHz for UDMA modes 3, 4 and 6 and no others
*/
static const bool set_udma_66_mhz[] = { false, false, false, true, true, false, true };
static void ftide010_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
struct ftide010 *ftide = ap->host->private_data;
u8 speed = adev->dma_mode;
u8 devno = adev->devno & 1;
u8 udma_en_mask;
u8 f66m_en_mask;
u8 clkreg;
u8 timreg;
u8 i;
/* Target device 0 (master) or 1 (slave) */
if (!devno) {
udma_en_mask = FTIDE010_CLK_MOD_DEV0_UDMA_EN;
f66m_en_mask = FTIDE010_CLK_MOD_DEV0_CLK_SEL;
} else {
udma_en_mask = FTIDE010_CLK_MOD_DEV1_UDMA_EN;
f66m_en_mask = FTIDE010_CLK_MOD_DEV1_CLK_SEL;
}
clkreg = readb(ftide->base + FTIDE010_CLK_MOD);
clkreg &= ~udma_en_mask;
clkreg &= ~f66m_en_mask;
if (speed & XFER_UDMA_0) {
i = speed & ~XFER_UDMA_0;
dev_dbg(ftide->dev, "set UDMA mode %02x, index %d\n",
speed, i);
clkreg |= udma_en_mask;
if (set_udma_66_mhz[i]) {
clkreg |= f66m_en_mask;
timreg = udma_66_setup_time[i] << 4 |
udma_66_hold_time[i];
} else {
timreg = udma_50_setup_time[i] << 4 |
udma_50_hold_time[i];
}
/* A special bit needs to be set for modes 5 and 6 */
if (i >= 5)
timreg |= FTIDE010_UDMA_TIMING_MODE_56;
dev_dbg(ftide->dev, "UDMA write clkreg = %02x, timreg = %02x\n",
clkreg, timreg);
writeb(clkreg, ftide->base + FTIDE010_CLK_MOD);
writeb(timreg, ftide->base + FTIDE010_UDMA_TIMING0 + devno);
} else {
i = speed & ~XFER_MW_DMA_0;
dev_dbg(ftide->dev, "set MWDMA mode %02x, index %d\n",
speed, i);
if (set_mdma_66_mhz[i]) {
clkreg |= f66m_en_mask;
timreg = mwdma_66_active_time[i] << 4 |
mwdma_66_recovery_time[i];
} else {
timreg = mwdma_50_active_time[i] << 4 |
mwdma_50_recovery_time[i];
}
dev_dbg(ftide->dev,
"MWDMA write clkreg = %02x, timreg = %02x\n",
clkreg, timreg);
/* This will affect all devices */
writeb(clkreg, ftide->base + FTIDE010_CLK_MOD);
writeb(timreg, ftide->base + FTIDE010_MWDMA_TIMING);
}
/*
* Store the current device (master or slave) in ap->private_data
* so that .qc_issue() can detect if this changes and reprogram
* the DMA settings.
*/
ap->private_data = adev;
return;
}
static void ftide010_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
struct ftide010 *ftide = ap->host->private_data;
u8 pio = adev->pio_mode - XFER_PIO_0;
dev_dbg(ftide->dev, "set PIO mode %02x, index %d\n",
adev->pio_mode, pio);
writeb(pio_active_time[pio] << 4 | pio_recovery_time[pio],
ftide->base + FTIDE010_PIO_TIMING);
}
/*
* We implement our own qc_issue() callback since we may need to set up
* the timings differently for master and slave transfers: the CLK_MOD_REG
* and MWDMA_TIMING_REG is shared between master and slave, so reprogramming
* this may be necessary.
*/
static unsigned int ftide010_qc_issue(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_device *adev = qc->dev;
/*
* If the device changed, i.e. slave->master, master->slave,
* then set up the DMA mode again so we are sure the timings
* are correct.
*/
if (adev != ap->private_data && ata_dma_enabled(adev))
ftide010_set_dmamode(ap, adev);
return ata_bmdma_qc_issue(qc);
}
static struct ata_port_operations pata_ftide010_port_ops = {
.inherits = &ata_bmdma_port_ops,
.set_dmamode = ftide010_set_dmamode,
.set_piomode = ftide010_set_piomode,
.qc_issue = ftide010_qc_issue,
};
static struct ata_port_info ftide010_port_info[] = {
{
.flags = ATA_FLAG_SLAVE_POSS,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.pio_mask = ATA_PIO4,
.port_ops = &pata_ftide010_port_ops,
},
};
#if IS_ENABLED(CONFIG_SATA_GEMINI)
static int pata_ftide010_gemini_port_start(struct ata_port *ap)
{
struct ftide010 *ftide = ap->host->private_data;
struct device *dev = ftide->dev;
struct sata_gemini *sg = ftide->sg;
int bridges = 0;
int ret;
ret = ata_bmdma_port_start(ap);
if (ret)
return ret;
if (ftide->master_to_sata0) {
dev_info(dev, "SATA0 (master) start\n");
ret = gemini_sata_start_bridge(sg, 0);
if (!ret)
bridges++;
}
if (ftide->master_to_sata1) {
dev_info(dev, "SATA1 (master) start\n");
ret = gemini_sata_start_bridge(sg, 1);
if (!ret)
bridges++;
}
/* Avoid double-starting */
if (ftide->slave_to_sata0 && !ftide->master_to_sata0) {
dev_info(dev, "SATA0 (slave) start\n");
ret = gemini_sata_start_bridge(sg, 0);
if (!ret)
bridges++;
}
/* Avoid double-starting */
if (ftide->slave_to_sata1 && !ftide->master_to_sata1) {
dev_info(dev, "SATA1 (slave) start\n");
ret = gemini_sata_start_bridge(sg, 1);
if (!ret)
bridges++;
}
dev_info(dev, "brought %d bridges online\n", bridges);
return (bridges > 0) ? 0 : -EINVAL; // -ENODEV;
}
static void pata_ftide010_gemini_port_stop(struct ata_port *ap)
{
struct ftide010 *ftide = ap->host->private_data;
struct device *dev = ftide->dev;
struct sata_gemini *sg = ftide->sg;
if (ftide->master_to_sata0) {
dev_info(dev, "SATA0 (master) stop\n");
gemini_sata_stop_bridge(sg, 0);
}
if (ftide->master_to_sata1) {
dev_info(dev, "SATA1 (master) stop\n");
gemini_sata_stop_bridge(sg, 1);
}
/* Avoid double-stopping */
if (ftide->slave_to_sata0 && !ftide->master_to_sata0) {
dev_info(dev, "SATA0 (slave) stop\n");
gemini_sata_stop_bridge(sg, 0);
}
/* Avoid double-stopping */
if (ftide->slave_to_sata1 && !ftide->master_to_sata1) {
dev_info(dev, "SATA1 (slave) stop\n");
gemini_sata_stop_bridge(sg, 1);
}
}
static int pata_ftide010_gemini_cable_detect(struct ata_port *ap)
{
struct ftide010 *ftide = ap->host->private_data;
/*
* Return the master cable, I have no clue how to return a different
* cable for the slave than for the master.
*/
return ftide->master_cbl;
}
static int pata_ftide010_gemini_init(struct ftide010 *ftide,
bool is_ata1)
{
struct device *dev = ftide->dev;
struct sata_gemini *sg;
enum gemini_muxmode muxmode;
/* Look up SATA bridge */
sg = gemini_sata_bridge_get();
if (IS_ERR(sg))
return PTR_ERR(sg);
ftide->sg = sg;
muxmode = gemini_sata_get_muxmode(sg);
/* Special ops */
pata_ftide010_port_ops.port_start =
pata_ftide010_gemini_port_start;
pata_ftide010_port_ops.port_stop =
pata_ftide010_gemini_port_stop;
pata_ftide010_port_ops.cable_detect =
pata_ftide010_gemini_cable_detect;
/* Flag port as SATA-capable */
if (gemini_sata_bridge_enabled(sg, is_ata1))
ftide010_port_info[0].flags |= ATA_FLAG_SATA;
/*
* We assume that a simple 40-wire cable is used in the PATA mode.
* if you're adding a system using the PATA interface, make sure
* the right cable is set up here, it might be necessary to use
* special hardware detection or encode the cable type in the device
* tree with special properties.
*/
if (!is_ata1) {
switch (muxmode) {
case GEMINI_MUXMODE_0:
ftide->master_cbl = ATA_CBL_SATA;
ftide->slave_cbl = ATA_CBL_PATA40;
ftide->master_to_sata0 = true;
break;
case GEMINI_MUXMODE_1:
ftide->master_cbl = ATA_CBL_SATA;
ftide->slave_cbl = ATA_CBL_NONE;
ftide->master_to_sata0 = true;
break;
case GEMINI_MUXMODE_2:
ftide->master_cbl = ATA_CBL_PATA40;
ftide->slave_cbl = ATA_CBL_PATA40;
break;
case GEMINI_MUXMODE_3:
ftide->master_cbl = ATA_CBL_SATA;
ftide->slave_cbl = ATA_CBL_SATA;
ftide->master_to_sata0 = true;
ftide->slave_to_sata1 = true;
break;
}
} else {
switch (muxmode) {
case GEMINI_MUXMODE_0:
ftide->master_cbl = ATA_CBL_SATA;
ftide->slave_cbl = ATA_CBL_NONE;
ftide->master_to_sata1 = true;
break;
case GEMINI_MUXMODE_1:
ftide->master_cbl = ATA_CBL_SATA;
ftide->slave_cbl = ATA_CBL_PATA40;
ftide->master_to_sata1 = true;
break;
case GEMINI_MUXMODE_2:
ftide->master_cbl = ATA_CBL_SATA;
ftide->slave_cbl = ATA_CBL_SATA;
ftide->slave_to_sata0 = true;
ftide->master_to_sata1 = true;
break;
case GEMINI_MUXMODE_3:
ftide->master_cbl = ATA_CBL_PATA40;
ftide->slave_cbl = ATA_CBL_PATA40;
break;
}
}
dev_info(dev, "set up Gemini PATA%d\n", is_ata1);
return 0;
}
#else
static int pata_ftide010_gemini_init(struct ftide010 *ftide,
bool is_ata1)
{
return -ENOTSUPP;
}
#endif
static int pata_ftide010_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
const struct ata_port_info pi = ftide010_port_info[0];
const struct ata_port_info *ppi[] = { &pi, NULL };
struct ftide010 *ftide;
struct resource *res;
int irq;
int ret;
int i;
ftide = devm_kzalloc(dev, sizeof(*ftide), GFP_KERNEL);
if (!ftide)
return -ENOMEM;
ftide->dev = dev;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENODEV;
ftide->base = devm_ioremap_resource(dev, res);
if (IS_ERR(ftide->base))
return PTR_ERR(ftide->base);
ftide->pclk = devm_clk_get(dev, "PCLK");
if (!IS_ERR(ftide->pclk)) {
ret = clk_prepare_enable(ftide->pclk);
if (ret) {
dev_err(dev, "failed to enable PCLK\n");
return ret;
}
}
/* Some special Cortina Gemini init, if needed */
if (of_device_is_compatible(np, "cortina,gemini-pata")) {
/*
* We need to know which instance is probing (the
* Gemini has two instances of FTIDE010) and we do
* this simply by looking at the physical base
* address, which is 0x63400000 for ATA1, else we
* are ATA0. This will also set up the cable types.
*/
ret = pata_ftide010_gemini_init(ftide,
(res->start == 0x63400000));
if (ret)
goto err_dis_clk;
} else {
/* Else assume we are connected using PATA40 */
ftide->master_cbl = ATA_CBL_PATA40;
ftide->slave_cbl = ATA_CBL_PATA40;
}
ftide->host = ata_host_alloc_pinfo(dev, ppi, 1);
if (!ftide->host) {
ret = -ENOMEM;
goto err_dis_clk;
}
ftide->host->private_data = ftide;
for (i = 0; i < ftide->host->n_ports; i++) {
struct ata_port *ap = ftide->host->ports[i];
struct ata_ioports *ioaddr = &ap->ioaddr;
ioaddr->bmdma_addr = ftide->base + FTIDE010_DMA_REG;
ioaddr->cmd_addr = ftide->base + FTIDE010_CMD_DATA;
ioaddr->ctl_addr = ftide->base + FTIDE010_ALTSTAT_CTRL;
ioaddr->altstatus_addr = ftide->base + FTIDE010_ALTSTAT_CTRL;
ata_sff_std_ports(ioaddr);
}
dev_info(dev, "device ID %08x, irq %d, reg %pR\n",
readl(ftide->base + FTIDE010_IDE_DEVICE_ID), irq, res);
ata: Add driver for Faraday Technology FTIDE010 This adds a driver for the Faraday Technology FTIDE010 PATA IP block. When used with the Storlink/Storm/Cortina Systems Gemini SoC, the PATA interface is accompanied by a PATA<->SATA bridge, so while the device appear as a PATA controller, it attaches physically to SATA disks, and also has a designated memory area with registers to set up the bridge. The Gemini SATA bridge is separated into its own driver file to make things modular and make it possible to reuse the PATA driver as stand-alone on other systems than the Gemini. dmesg excerpt from the D-Link DIR-685 storage router: gemini-sata-bridge 46000000.sata: SATA ID 00000e00, PHY ID: 01000100 gemini-sata-bridge 46000000.sata: set up the Gemini IDE/SATA nexus ftide010 63000000.ata: set up Gemini PATA0 ftide010 63000000.ata: device ID 00000500, irq 26, io base 0x63000000 ftide010 63000000.ata: SATA0 (master) start gemini-sata-bridge 46000000.sata: SATA0 PHY ready scsi host0: pata-ftide010 ata1: PATA max UDMA/133 irq 26 ata1.00: ATA-8: INTEL SSDSA2CW120G3, 4PC10302, max UDMA/133 ata1.00: 234441648 sectors, multi 1: LBA48 NCQ (depth 0/32) ata1.00: configured for UDMA/133 scsi 0:0:0:0: Direct-Access ATA INTEL SSDSA2CW12 0302 PQ: 0 ANSI: 5 ata1.00: Enabling discard_zeroes_data sd 0:0:0:0: [sda] 234441648 512-byte logical blocks: (120 GB/112 GiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA ata1.00: Enabling discard_zeroes_data ata1.00: Enabling discard_zeroes_data sd 0:0:0:0: [sda] Attached SCSI disk After this I can flawlessly mount and read/write copy etc files from /dev/sda[n]. Cc: John Feng-Hsin Chiang <john453@faraday-tech.com> Cc: Greentime Hu <green.hu@gmail.com> Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-04 08:50:08 +00:00
ret = ata_host_activate(ftide->host, irq, ata_bmdma_interrupt,
0, &pata_ftide010_sht);
if (ret)
goto err_dis_clk;
return 0;
err_dis_clk:
if (!IS_ERR(ftide->pclk))
clk_disable_unprepare(ftide->pclk);
return ret;
}
static int pata_ftide010_remove(struct platform_device *pdev)
{
struct ata_host *host = platform_get_drvdata(pdev);
struct ftide010 *ftide = host->private_data;
ata_host_detach(ftide->host);
if (!IS_ERR(ftide->pclk))
clk_disable_unprepare(ftide->pclk);
return 0;
}
static const struct of_device_id pata_ftide010_of_match[] = {
{
.compatible = "faraday,ftide010",
},
{},
};
static struct platform_driver pata_ftide010_driver = {
.driver = {
.name = DRV_NAME,
.of_match_table = of_match_ptr(pata_ftide010_of_match),
},
.probe = pata_ftide010_probe,
.remove = pata_ftide010_remove,
};
module_platform_driver(pata_ftide010_driver);
MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);