mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 17:59:32 +00:00
![Adrian Hunter](/assets/img/avatar_default.png)
Several commits relating to setting power have been introducing problems by putting driver-specific rules into generic SDHCI code. Krzysztof Kozlowski reported that after commit918f4cbd43
("mmc: sdhci: restore behavior when setting VDD via external regulator") on Trats2 board there are warnings for invalid VDD value (2.8V): [ 3.119656] ------------[ cut here ]------------ [ 3.119666] WARNING: CPU: 3 PID: 90 at ../drivers/mmc/host/sdhci.c:1234 sdhci_do_set_ios+0x4cc/0x5e0 [ 3.119669] mmc0: Invalid vdd 0x10 [ 3.119673] Modules linked in: [ 3.119679] CPU: 3 PID: 90 Comm: kworker/3:1 Tainted: G W 4.5.0-next-20160324 #23 [ 3.119681] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) [ 3.119690] Workqueue: events_freezable mmc_rescan [ 3.119708] [<c010e0ac>] (unwind_backtrace) from [<c010ae10>] (show_stack+0x10/0x14) [ 3.119719] [<c010ae10>] (show_stack) from [<c0323260>] (dump_stack+0x88/0x9c) [ 3.119728] [<c0323260>] (dump_stack) from [<c011b754>] (__warn+0xe8/0x100) [ 3.119734] [<c011b754>] (__warn) from [<c011b7a4>] (warn_slowpath_fmt+0x38/0x48) [ 3.119740] [<c011b7a4>] (warn_slowpath_fmt) from [<c0527d28>] (sdhci_do_set_ios+0x4cc/0x5e0) [ 3.119748] [<c0527d28>] (sdhci_do_set_ios) from [<c0528018>] (sdhci_runtime_resume_host+0x60/0x114) [ 3.119758] [<c0528018>] (sdhci_runtime_resume_host) from [<c0402570>] (__rpm_callback+0x2c/0x60) [ 3.119767] [<c0402570>] (__rpm_callback) from [<c04025c4>] (rpm_callback+0x20/0x80) [ 3.119773] [<c04025c4>] (rpm_callback) from [<c04034b8>] (rpm_resume+0x36c/0x558) [ 3.119780] [<c04034b8>] (rpm_resume) from [<c04036f0>] (__pm_runtime_resume+0x4c/0x64) [ 3.119788] [<c04036f0>] (__pm_runtime_resume) from [<c0512728>] (__mmc_claim_host+0x170/0x1b0) [ 3.119795] [<c0512728>] (__mmc_claim_host) from [<c0514e2c>] (mmc_rescan+0x54/0x348) [ 3.119807] [<c0514e2c>] (mmc_rescan) from [<c0130dac>] (process_one_work+0x120/0x3f4) [ 3.119815] [<c0130dac>] (process_one_work) from [<c01310b8>] (worker_thread+0x38/0x554) [ 3.119823] [<c01310b8>] (worker_thread) from [<c01365a4>] (kthread+0xdc/0xf4) [ 3.119831] [<c01365a4>] (kthread) from [<c0107878>] (ret_from_fork+0x14/0x3c) [ 3.119834] ---[ end trace a22d652aa3276886 ]--- Fix by adding a 'set_power' callback and restoring the default behaviour prior to commit918f4cbd43
("mmc: sdhci: restore behavior when setting VDD via external regulator"). The desired behaviour of that commit is gotten by having sdhci-pxav3 provide its own set_power callback. Reported-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Link: http://lkml.kernel.org/r/CAJKOXPcGDnPm-Ykh6wHqV1YxfTaov5E8iVqBoBn4OJc7BnhgEQ@mail.gmail.com Fixes:918f4cbd43
("mmc: sdhci: restore behavior when setting VDD...) Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org # v4.5+ Reviewed-by: Jisheng Zhang <jszhang@marvell.com> Tested-by: Jisheng Zhang <jszhang@marvell.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Anand Moon <linux.amoon@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
614 lines
16 KiB
C
614 lines
16 KiB
C
/*
|
|
* Copyright (C) 2010 Marvell International Ltd.
|
|
* Zhangfei Gao <zhangfei.gao@marvell.com>
|
|
* Kevin Wang <dwang4@marvell.com>
|
|
* Mingwei Wang <mwwang@marvell.com>
|
|
* Philip Rakity <prakity@marvell.com>
|
|
* Mark Brown <markb@marvell.com>
|
|
*
|
|
* This software is licensed under the terms of the GNU General Public
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
* may be copied, distributed, and modified under those terms.
|
|
*
|
|
* 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/err.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/io.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/mmc/card.h>
|
|
#include <linux/mmc/host.h>
|
|
#include <linux/mmc/slot-gpio.h>
|
|
#include <linux/platform_data/pxa_sdhci.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/of_gpio.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/mbus.h>
|
|
|
|
#include "sdhci.h"
|
|
#include "sdhci-pltfm.h"
|
|
|
|
#define PXAV3_RPM_DELAY_MS 50
|
|
|
|
#define SD_CLOCK_BURST_SIZE_SETUP 0x10A
|
|
#define SDCLK_SEL 0x100
|
|
#define SDCLK_DELAY_SHIFT 9
|
|
#define SDCLK_DELAY_MASK 0x1f
|
|
|
|
#define SD_CFG_FIFO_PARAM 0x100
|
|
#define SDCFG_GEN_PAD_CLK_ON (1<<6)
|
|
#define SDCFG_GEN_PAD_CLK_CNT_MASK 0xFF
|
|
#define SDCFG_GEN_PAD_CLK_CNT_SHIFT 24
|
|
|
|
#define SD_SPI_MODE 0x108
|
|
#define SD_CE_ATA_1 0x10C
|
|
|
|
#define SD_CE_ATA_2 0x10E
|
|
#define SDCE_MISC_INT (1<<2)
|
|
#define SDCE_MISC_INT_EN (1<<1)
|
|
|
|
struct sdhci_pxa {
|
|
struct clk *clk_core;
|
|
struct clk *clk_io;
|
|
u8 power_mode;
|
|
void __iomem *sdio3_conf_reg;
|
|
};
|
|
|
|
/*
|
|
* These registers are relative to the second register region, for the
|
|
* MBus bridge.
|
|
*/
|
|
#define SDHCI_WINDOW_CTRL(i) (0x80 + ((i) << 3))
|
|
#define SDHCI_WINDOW_BASE(i) (0x84 + ((i) << 3))
|
|
#define SDHCI_MAX_WIN_NUM 8
|
|
|
|
/*
|
|
* Fields below belong to SDIO3 Configuration Register (third register
|
|
* region for the Armada 38x flavor)
|
|
*/
|
|
|
|
#define SDIO3_CONF_CLK_INV BIT(0)
|
|
#define SDIO3_CONF_SD_FB_CLK BIT(2)
|
|
|
|
static int mv_conf_mbus_windows(struct platform_device *pdev,
|
|
const struct mbus_dram_target_info *dram)
|
|
{
|
|
int i;
|
|
void __iomem *regs;
|
|
struct resource *res;
|
|
|
|
if (!dram) {
|
|
dev_err(&pdev->dev, "no mbus dram info\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
if (!res) {
|
|
dev_err(&pdev->dev, "cannot get mbus registers\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
regs = ioremap(res->start, resource_size(res));
|
|
if (!regs) {
|
|
dev_err(&pdev->dev, "cannot map mbus registers\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
for (i = 0; i < SDHCI_MAX_WIN_NUM; i++) {
|
|
writel(0, regs + SDHCI_WINDOW_CTRL(i));
|
|
writel(0, regs + SDHCI_WINDOW_BASE(i));
|
|
}
|
|
|
|
for (i = 0; i < dram->num_cs; i++) {
|
|
const struct mbus_dram_window *cs = dram->cs + i;
|
|
|
|
/* Write size, attributes and target id to control register */
|
|
writel(((cs->size - 1) & 0xffff0000) |
|
|
(cs->mbus_attr << 8) |
|
|
(dram->mbus_dram_target_id << 4) | 1,
|
|
regs + SDHCI_WINDOW_CTRL(i));
|
|
/* Write base address to base register */
|
|
writel(cs->base, regs + SDHCI_WINDOW_BASE(i));
|
|
}
|
|
|
|
iounmap(regs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int armada_38x_quirks(struct platform_device *pdev,
|
|
struct sdhci_host *host)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
|
|
struct resource *res;
|
|
|
|
host->quirks &= ~SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN;
|
|
host->quirks |= SDHCI_QUIRK_MISSING_CAPS;
|
|
|
|
host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
|
|
host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
|
|
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
|
|
"conf-sdio3");
|
|
if (res) {
|
|
pxa->sdio3_conf_reg = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(pxa->sdio3_conf_reg))
|
|
return PTR_ERR(pxa->sdio3_conf_reg);
|
|
} else {
|
|
/*
|
|
* According to erratum 'FE-2946959' both SDR50 and DDR50
|
|
* modes require specific clock adjustments in SDIO3
|
|
* Configuration register, if the adjustment is not done,
|
|
* remove them from the capabilities.
|
|
*/
|
|
host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50);
|
|
|
|
dev_warn(&pdev->dev, "conf-sdio3 register not found: disabling SDR50 and DDR50 modes.\nConsider updating your dtb\n");
|
|
}
|
|
|
|
/*
|
|
* According to erratum 'ERR-7878951' Armada 38x SDHCI
|
|
* controller has different capabilities than the ones shown
|
|
* in its registers
|
|
*/
|
|
if (of_property_read_bool(np, "no-1-8-v")) {
|
|
host->caps &= ~SDHCI_CAN_VDD_180;
|
|
host->mmc->caps &= ~MMC_CAP_1_8V_DDR;
|
|
} else {
|
|
host->caps &= ~SDHCI_CAN_VDD_330;
|
|
}
|
|
host->caps1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_USE_SDR50_TUNING);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pxav3_reset(struct sdhci_host *host, u8 mask)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
|
|
struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
|
|
|
|
sdhci_reset(host, mask);
|
|
|
|
if (mask == SDHCI_RESET_ALL) {
|
|
/*
|
|
* tune timing of read data/command when crc error happen
|
|
* no performance impact
|
|
*/
|
|
if (pdata && 0 != pdata->clk_delay_cycles) {
|
|
u16 tmp;
|
|
|
|
tmp = readw(host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
|
|
tmp |= (pdata->clk_delay_cycles & SDCLK_DELAY_MASK)
|
|
<< SDCLK_DELAY_SHIFT;
|
|
tmp |= SDCLK_SEL;
|
|
writew(tmp, host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
|
|
}
|
|
}
|
|
}
|
|
|
|
#define MAX_WAIT_COUNT 5
|
|
static void pxav3_gen_init_74_clocks(struct sdhci_host *host, u8 power_mode)
|
|
{
|
|
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
|
|
u16 tmp;
|
|
int count;
|
|
|
|
if (pxa->power_mode == MMC_POWER_UP
|
|
&& power_mode == MMC_POWER_ON) {
|
|
|
|
dev_dbg(mmc_dev(host->mmc),
|
|
"%s: slot->power_mode = %d,"
|
|
"ios->power_mode = %d\n",
|
|
__func__,
|
|
pxa->power_mode,
|
|
power_mode);
|
|
|
|
/* set we want notice of when 74 clocks are sent */
|
|
tmp = readw(host->ioaddr + SD_CE_ATA_2);
|
|
tmp |= SDCE_MISC_INT_EN;
|
|
writew(tmp, host->ioaddr + SD_CE_ATA_2);
|
|
|
|
/* start sending the 74 clocks */
|
|
tmp = readw(host->ioaddr + SD_CFG_FIFO_PARAM);
|
|
tmp |= SDCFG_GEN_PAD_CLK_ON;
|
|
writew(tmp, host->ioaddr + SD_CFG_FIFO_PARAM);
|
|
|
|
/* slowest speed is about 100KHz or 10usec per clock */
|
|
udelay(740);
|
|
count = 0;
|
|
|
|
while (count++ < MAX_WAIT_COUNT) {
|
|
if ((readw(host->ioaddr + SD_CE_ATA_2)
|
|
& SDCE_MISC_INT) == 0)
|
|
break;
|
|
udelay(10);
|
|
}
|
|
|
|
if (count == MAX_WAIT_COUNT)
|
|
dev_warn(mmc_dev(host->mmc), "74 clock interrupt not cleared\n");
|
|
|
|
/* clear the interrupt bit if posted */
|
|
tmp = readw(host->ioaddr + SD_CE_ATA_2);
|
|
tmp |= SDCE_MISC_INT;
|
|
writew(tmp, host->ioaddr + SD_CE_ATA_2);
|
|
}
|
|
pxa->power_mode = power_mode;
|
|
}
|
|
|
|
static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
|
|
{
|
|
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
|
|
u16 ctrl_2;
|
|
|
|
/*
|
|
* Set V18_EN -- UHS modes do not work without this.
|
|
* does not change signaling voltage
|
|
*/
|
|
ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
|
|
|
|
/* Select Bus Speed Mode for host */
|
|
ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
|
|
switch (uhs) {
|
|
case MMC_TIMING_UHS_SDR12:
|
|
ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
|
|
break;
|
|
case MMC_TIMING_UHS_SDR25:
|
|
ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
|
|
break;
|
|
case MMC_TIMING_UHS_SDR50:
|
|
ctrl_2 |= SDHCI_CTRL_UHS_SDR50 | SDHCI_CTRL_VDD_180;
|
|
break;
|
|
case MMC_TIMING_UHS_SDR104:
|
|
ctrl_2 |= SDHCI_CTRL_UHS_SDR104 | SDHCI_CTRL_VDD_180;
|
|
break;
|
|
case MMC_TIMING_MMC_DDR52:
|
|
case MMC_TIMING_UHS_DDR50:
|
|
ctrl_2 |= SDHCI_CTRL_UHS_DDR50 | SDHCI_CTRL_VDD_180;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Update SDIO3 Configuration register according to erratum
|
|
* FE-2946959
|
|
*/
|
|
if (pxa->sdio3_conf_reg) {
|
|
u8 reg_val = readb(pxa->sdio3_conf_reg);
|
|
|
|
if (uhs == MMC_TIMING_UHS_SDR50 ||
|
|
uhs == MMC_TIMING_UHS_DDR50) {
|
|
reg_val &= ~SDIO3_CONF_CLK_INV;
|
|
reg_val |= SDIO3_CONF_SD_FB_CLK;
|
|
} else if (uhs == MMC_TIMING_MMC_HS) {
|
|
reg_val &= ~SDIO3_CONF_CLK_INV;
|
|
reg_val &= ~SDIO3_CONF_SD_FB_CLK;
|
|
} else {
|
|
reg_val |= SDIO3_CONF_CLK_INV;
|
|
reg_val &= ~SDIO3_CONF_SD_FB_CLK;
|
|
}
|
|
writeb(reg_val, pxa->sdio3_conf_reg);
|
|
}
|
|
|
|
sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
|
|
dev_dbg(mmc_dev(host->mmc),
|
|
"%s uhs = %d, ctrl_2 = %04X\n",
|
|
__func__, uhs, ctrl_2);
|
|
}
|
|
|
|
static void pxav3_set_power(struct sdhci_host *host, unsigned char mode,
|
|
unsigned short vdd)
|
|
{
|
|
struct mmc_host *mmc = host->mmc;
|
|
u8 pwr = host->pwr;
|
|
|
|
sdhci_set_power(host, mode, vdd);
|
|
|
|
if (host->pwr == pwr)
|
|
return;
|
|
|
|
if (host->pwr == 0)
|
|
vdd = 0;
|
|
|
|
if (!IS_ERR(mmc->supply.vmmc)) {
|
|
spin_unlock_irq(&host->lock);
|
|
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
|
|
spin_lock_irq(&host->lock);
|
|
}
|
|
}
|
|
|
|
static const struct sdhci_ops pxav3_sdhci_ops = {
|
|
.set_clock = sdhci_set_clock,
|
|
.set_power = pxav3_set_power,
|
|
.platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
|
|
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
|
|
.set_bus_width = sdhci_set_bus_width,
|
|
.reset = pxav3_reset,
|
|
.set_uhs_signaling = pxav3_set_uhs_signaling,
|
|
};
|
|
|
|
static struct sdhci_pltfm_data sdhci_pxav3_pdata = {
|
|
.quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK
|
|
| SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
|
|
| SDHCI_QUIRK_32BIT_ADMA_SIZE
|
|
| SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
|
|
.ops = &pxav3_sdhci_ops,
|
|
};
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id sdhci_pxav3_of_match[] = {
|
|
{
|
|
.compatible = "mrvl,pxav3-mmc",
|
|
},
|
|
{
|
|
.compatible = "marvell,armada-380-sdhci",
|
|
},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, sdhci_pxav3_of_match);
|
|
|
|
static struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
|
|
{
|
|
struct sdhci_pxa_platdata *pdata;
|
|
struct device_node *np = dev->of_node;
|
|
u32 clk_delay_cycles;
|
|
|
|
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
|
|
if (!pdata)
|
|
return NULL;
|
|
|
|
if (!of_property_read_u32(np, "mrvl,clk-delay-cycles",
|
|
&clk_delay_cycles))
|
|
pdata->clk_delay_cycles = clk_delay_cycles;
|
|
|
|
return pdata;
|
|
}
|
|
#else
|
|
static inline struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
static int sdhci_pxav3_probe(struct platform_device *pdev)
|
|
{
|
|
struct sdhci_pltfm_host *pltfm_host;
|
|
struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *np = pdev->dev.of_node;
|
|
struct sdhci_host *host = NULL;
|
|
struct sdhci_pxa *pxa = NULL;
|
|
const struct of_device_id *match;
|
|
int ret;
|
|
|
|
host = sdhci_pltfm_init(pdev, &sdhci_pxav3_pdata, sizeof(*pxa));
|
|
if (IS_ERR(host))
|
|
return PTR_ERR(host);
|
|
|
|
pltfm_host = sdhci_priv(host);
|
|
pxa = sdhci_pltfm_priv(pltfm_host);
|
|
|
|
pxa->clk_io = devm_clk_get(dev, "io");
|
|
if (IS_ERR(pxa->clk_io))
|
|
pxa->clk_io = devm_clk_get(dev, NULL);
|
|
if (IS_ERR(pxa->clk_io)) {
|
|
dev_err(dev, "failed to get io clock\n");
|
|
ret = PTR_ERR(pxa->clk_io);
|
|
goto err_clk_get;
|
|
}
|
|
pltfm_host->clk = pxa->clk_io;
|
|
clk_prepare_enable(pxa->clk_io);
|
|
|
|
pxa->clk_core = devm_clk_get(dev, "core");
|
|
if (!IS_ERR(pxa->clk_core))
|
|
clk_prepare_enable(pxa->clk_core);
|
|
|
|
/* enable 1/8V DDR capable */
|
|
host->mmc->caps |= MMC_CAP_1_8V_DDR;
|
|
|
|
if (of_device_is_compatible(np, "marvell,armada-380-sdhci")) {
|
|
ret = armada_38x_quirks(pdev, host);
|
|
if (ret < 0)
|
|
goto err_mbus_win;
|
|
ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info());
|
|
if (ret < 0)
|
|
goto err_mbus_win;
|
|
}
|
|
|
|
match = of_match_device(of_match_ptr(sdhci_pxav3_of_match), &pdev->dev);
|
|
if (match) {
|
|
ret = mmc_of_parse(host->mmc);
|
|
if (ret)
|
|
goto err_of_parse;
|
|
sdhci_get_of_property(pdev);
|
|
pdata = pxav3_get_mmc_pdata(dev);
|
|
pdev->dev.platform_data = pdata;
|
|
} else if (pdata) {
|
|
/* on-chip device */
|
|
if (pdata->flags & PXA_FLAG_CARD_PERMANENT)
|
|
host->mmc->caps |= MMC_CAP_NONREMOVABLE;
|
|
|
|
/* If slot design supports 8 bit data, indicate this to MMC. */
|
|
if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT)
|
|
host->mmc->caps |= MMC_CAP_8_BIT_DATA;
|
|
|
|
if (pdata->quirks)
|
|
host->quirks |= pdata->quirks;
|
|
if (pdata->quirks2)
|
|
host->quirks2 |= pdata->quirks2;
|
|
if (pdata->host_caps)
|
|
host->mmc->caps |= pdata->host_caps;
|
|
if (pdata->host_caps2)
|
|
host->mmc->caps2 |= pdata->host_caps2;
|
|
if (pdata->pm_caps)
|
|
host->mmc->pm_caps |= pdata->pm_caps;
|
|
|
|
if (gpio_is_valid(pdata->ext_cd_gpio)) {
|
|
ret = mmc_gpio_request_cd(host->mmc, pdata->ext_cd_gpio,
|
|
0);
|
|
if (ret) {
|
|
dev_err(mmc_dev(host->mmc),
|
|
"failed to allocate card detect gpio\n");
|
|
goto err_cd_req;
|
|
}
|
|
}
|
|
}
|
|
|
|
pm_runtime_get_noresume(&pdev->dev);
|
|
pm_runtime_set_active(&pdev->dev);
|
|
pm_runtime_set_autosuspend_delay(&pdev->dev, PXAV3_RPM_DELAY_MS);
|
|
pm_runtime_use_autosuspend(&pdev->dev);
|
|
pm_runtime_enable(&pdev->dev);
|
|
pm_suspend_ignore_children(&pdev->dev, 1);
|
|
|
|
ret = sdhci_add_host(host);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to add host\n");
|
|
goto err_add_host;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, host);
|
|
|
|
if (host->mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ)
|
|
device_init_wakeup(&pdev->dev, 1);
|
|
|
|
pm_runtime_put_autosuspend(&pdev->dev);
|
|
|
|
return 0;
|
|
|
|
err_add_host:
|
|
pm_runtime_disable(&pdev->dev);
|
|
pm_runtime_put_noidle(&pdev->dev);
|
|
err_of_parse:
|
|
err_cd_req:
|
|
err_mbus_win:
|
|
clk_disable_unprepare(pxa->clk_io);
|
|
clk_disable_unprepare(pxa->clk_core);
|
|
err_clk_get:
|
|
sdhci_pltfm_free(pdev);
|
|
return ret;
|
|
}
|
|
|
|
static int sdhci_pxav3_remove(struct platform_device *pdev)
|
|
{
|
|
struct sdhci_host *host = platform_get_drvdata(pdev);
|
|
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
|
|
|
|
pm_runtime_get_sync(&pdev->dev);
|
|
pm_runtime_disable(&pdev->dev);
|
|
pm_runtime_put_noidle(&pdev->dev);
|
|
|
|
sdhci_remove_host(host, 1);
|
|
|
|
clk_disable_unprepare(pxa->clk_io);
|
|
clk_disable_unprepare(pxa->clk_core);
|
|
|
|
sdhci_pltfm_free(pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int sdhci_pxav3_suspend(struct device *dev)
|
|
{
|
|
int ret;
|
|
struct sdhci_host *host = dev_get_drvdata(dev);
|
|
|
|
pm_runtime_get_sync(dev);
|
|
ret = sdhci_suspend_host(host);
|
|
pm_runtime_mark_last_busy(dev);
|
|
pm_runtime_put_autosuspend(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int sdhci_pxav3_resume(struct device *dev)
|
|
{
|
|
int ret;
|
|
struct sdhci_host *host = dev_get_drvdata(dev);
|
|
|
|
pm_runtime_get_sync(dev);
|
|
ret = sdhci_resume_host(host);
|
|
pm_runtime_mark_last_busy(dev);
|
|
pm_runtime_put_autosuspend(dev);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM
|
|
static int sdhci_pxav3_runtime_suspend(struct device *dev)
|
|
{
|
|
struct sdhci_host *host = dev_get_drvdata(dev);
|
|
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
|
|
int ret;
|
|
|
|
ret = sdhci_runtime_suspend_host(host);
|
|
if (ret)
|
|
return ret;
|
|
|
|
clk_disable_unprepare(pxa->clk_io);
|
|
if (!IS_ERR(pxa->clk_core))
|
|
clk_disable_unprepare(pxa->clk_core);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sdhci_pxav3_runtime_resume(struct device *dev)
|
|
{
|
|
struct sdhci_host *host = dev_get_drvdata(dev);
|
|
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
|
|
|
|
clk_prepare_enable(pxa->clk_io);
|
|
if (!IS_ERR(pxa->clk_core))
|
|
clk_prepare_enable(pxa->clk_core);
|
|
|
|
return sdhci_runtime_resume_host(host);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM
|
|
static const struct dev_pm_ops sdhci_pxav3_pmops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(sdhci_pxav3_suspend, sdhci_pxav3_resume)
|
|
SET_RUNTIME_PM_OPS(sdhci_pxav3_runtime_suspend,
|
|
sdhci_pxav3_runtime_resume, NULL)
|
|
};
|
|
|
|
#define SDHCI_PXAV3_PMOPS (&sdhci_pxav3_pmops)
|
|
|
|
#else
|
|
#define SDHCI_PXAV3_PMOPS NULL
|
|
#endif
|
|
|
|
static struct platform_driver sdhci_pxav3_driver = {
|
|
.driver = {
|
|
.name = "sdhci-pxav3",
|
|
.of_match_table = of_match_ptr(sdhci_pxav3_of_match),
|
|
.pm = SDHCI_PXAV3_PMOPS,
|
|
},
|
|
.probe = sdhci_pxav3_probe,
|
|
.remove = sdhci_pxav3_remove,
|
|
};
|
|
|
|
module_platform_driver(sdhci_pxav3_driver);
|
|
|
|
MODULE_DESCRIPTION("SDHCI driver for pxav3");
|
|
MODULE_AUTHOR("Marvell International Ltd.");
|
|
MODULE_LICENSE("GPL v2");
|
|
|