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Commit f99552d9 authored by Olof Johansson's avatar Olof Johansson
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Merge tag 'imx-drivers-5.2' of... 

Merge tag 'imx-drivers-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX drivers change for 5.2:
 - A series from Aisheng to generalize the SCU powerdomain driver
   for easier adding new SCU based platforms like imx8qm.
 - Add a generic i.MX8 SoC driver for reporting SoC and platform
   information.
 - Replace explicit polling loop with a call to regmap_read_poll_timeout()
   for gpcv2 driver to avoid code repetition.
 - Use devm_platform_ioremap_resource() to simplify gpc/gpcv2 driver
   code a bit.
 - Add general IRQ support for imx-scu driver, so that interrupt of
   device like RTC, thermal and watchdog can be handled.

* tag 'imx-drivers-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  soc: imx: Add generic i.MX8 SoC driver
  firmware: imx: enable imx scu general irq function
  soc: imx: gpcv2: use devm_platform_ioremap_resource() to simplify code
  soc: imx: gpc: use devm_platform_ioremap_resource() to simplify code
  firmware: imx: scu-pd: decouple the SS information from domain names
  firmware: imx: scu-pd: add specifying the base of domain name index support
  firmware: imx: scu-pd: use bool to set postfix
  soc: imx: gpcv2: Make use of regmap_read_poll_timeout()
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parents ab7b7c71 a7e26f35
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Showing with 376 additions and 89 deletions
drivers/firmware/imx/Makefile
View file @ f99552d9
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_IMX_SCU) += imx-scu.o misc.o
obj-$(CONFIG_IMX_SCU) += imx-scu.o misc.o imx-scu-irq.o
obj-$(CONFIG_IMX_SCU_PD) += scu-pd.o
drivers/firmware/imx/imx-scu-irq.c 0 → 100644
View file @ f99552d9
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2019 NXP
*
* Implementation of the SCU IRQ functions using MU.
*
*/
#include <dt-bindings/firmware/imx/rsrc.h>
#include <linux/firmware/imx/ipc.h>
#include <linux/mailbox_client.h>
#define IMX_SC_IRQ_FUNC_ENABLE 1
#define IMX_SC_IRQ_FUNC_STATUS 2
#define IMX_SC_IRQ_NUM_GROUP 4
static u32 mu_resource_id;
struct imx_sc_msg_irq_get_status {
struct imx_sc_rpc_msg hdr;
union {
struct {
u16 resource;
u8 group;
u8 reserved;
} __packed req;
struct {
u32 status;
} resp;
} data;
};
struct imx_sc_msg_irq_enable {
struct imx_sc_rpc_msg hdr;
u32 mask;
u16 resource;
u8 group;
u8 enable;
} __packed;
static struct imx_sc_ipc *imx_sc_irq_ipc_handle;
static struct work_struct imx_sc_irq_work;
static ATOMIC_NOTIFIER_HEAD(imx_scu_irq_notifier_chain);
int imx_scu_irq_register_notifier(struct notifier_block *nb)
{
return atomic_notifier_chain_register(
&imx_scu_irq_notifier_chain, nb);
}
EXPORT_SYMBOL(imx_scu_irq_register_notifier);
int imx_scu_irq_unregister_notifier(struct notifier_block *nb)
{
return atomic_notifier_chain_unregister(
&imx_scu_irq_notifier_chain, nb);
}
EXPORT_SYMBOL(imx_scu_irq_unregister_notifier);
static int imx_scu_irq_notifier_call_chain(unsigned long status, u8 *group)
{
return atomic_notifier_call_chain(&imx_scu_irq_notifier_chain,
status, (void *)group);
}
static void imx_scu_irq_work_handler(struct work_struct *work)
{
struct imx_sc_msg_irq_get_status msg;
struct imx_sc_rpc_msg *hdr = &msg.hdr;
u32 irq_status;
int ret;
u8 i;
for (i = 0; i < IMX_SC_IRQ_NUM_GROUP; i++) {
hdr->ver = IMX_SC_RPC_VERSION;
hdr->svc = IMX_SC_RPC_SVC_IRQ;
hdr->func = IMX_SC_IRQ_FUNC_STATUS;
hdr->size = 2;
msg.data.req.resource = mu_resource_id;
msg.data.req.group = i;
ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true);
if (ret) {
pr_err("get irq group %d status failed, ret %d\n",
i, ret);
return;
}
irq_status = msg.data.resp.status;
if (!irq_status)
continue;
imx_scu_irq_notifier_call_chain(irq_status, &i);
}
}
int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable)
{
struct imx_sc_msg_irq_enable msg;
struct imx_sc_rpc_msg *hdr = &msg.hdr;
int ret;
hdr->ver = IMX_SC_RPC_VERSION;
hdr->svc = IMX_SC_RPC_SVC_IRQ;
hdr->func = IMX_SC_IRQ_FUNC_ENABLE;
hdr->size = 3;
msg.resource = mu_resource_id;
msg.group = group;
msg.mask = mask;
msg.enable = enable;
ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true);
if (ret)
pr_err("enable irq failed, group %d, mask %d, ret %d\n",
group, mask, ret);
return ret;
}
EXPORT_SYMBOL(imx_scu_irq_group_enable);
static void imx_scu_irq_callback(struct mbox_client *c, void *msg)
{
schedule_work(&imx_sc_irq_work);
}
int imx_scu_enable_general_irq_channel(struct device *dev)
{
struct of_phandle_args spec;
struct mbox_client *cl;
struct mbox_chan *ch;
int ret = 0, i = 0;
ret = imx_scu_get_handle(&imx_sc_irq_ipc_handle);
if (ret)
return ret;
cl = devm_kzalloc(dev, sizeof(*cl), GFP_KERNEL);
if (!cl)
return -ENOMEM;
cl->dev = dev;
cl->rx_callback = imx_scu_irq_callback;
/* SCU general IRQ uses general interrupt channel 3 */
ch = mbox_request_channel_byname(cl, "gip3");
if (IS_ERR(ch)) {
ret = PTR_ERR(ch);
dev_err(dev, "failed to request mbox chan gip3, ret %d\n", ret);
devm_kfree(dev, cl);
return ret;
}
INIT_WORK(&imx_sc_irq_work, imx_scu_irq_work_handler);
if (!of_parse_phandle_with_args(dev->of_node, "mboxes",
"#mbox-cells", 0, &spec))
i = of_alias_get_id(spec.np, "mu");
/* use mu1 as general mu irq channel if failed */
if (i < 0)
i = 1;
mu_resource_id = IMX_SC_R_MU_0A + i;
return ret;
}
EXPORT_SYMBOL(imx_scu_enable_general_irq_channel);
drivers/firmware/imx/imx-scu.c
View file @ f99552d9
......@@ -10,6 +10,7 @@
#include <linux/err.h>
#include <linux/firmware/imx/types.h>
#include <linux/firmware/imx/ipc.h>
#include <linux/firmware/imx/sci.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
......@@ -246,6 +247,11 @@ static int imx_scu_probe(struct platform_device *pdev)
imx_sc_ipc_handle = sc_ipc;
ret = imx_scu_enable_general_irq_channel(dev);
if (ret)
dev_warn(dev,
"failed to enable general irq channel: %d\n", ret);
dev_info(dev, "NXP i.MX SCU Initialized\n");
return devm_of_platform_populate(dev);
......
drivers/firmware/imx/scu-pd.c
View file @ f99552d9
......@@ -74,7 +74,10 @@ struct imx_sc_pd_range {
char *name;
u32 rsrc;
u8 num;
/* add domain index */
bool postfix;
u8 start_from;
};
struct imx_sc_pd_soc {
......@@ -84,71 +87,75 @@ struct imx_sc_pd_soc {
static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = {
/* LSIO SS */
{ "lsio-pwm", IMX_SC_R_PWM_0, 8, 1 },
{ "lsio-gpio", IMX_SC_R_GPIO_0, 8, 1 },
{ "lsio-gpt", IMX_SC_R_GPT_0, 5, 1 },
{ "lsio-kpp", IMX_SC_R_KPP, 1, 0 },
{ "lsio-fspi", IMX_SC_R_FSPI_0, 2, 1 },
{ "lsio-mu", IMX_SC_R_MU_0A, 14, 1 },
{ "pwm", IMX_SC_R_PWM_0, 8, true, 0 },
{ "gpio", IMX_SC_R_GPIO_0, 8, true, 0 },
{ "gpt", IMX_SC_R_GPT_0, 5, true, 0 },
{ "kpp", IMX_SC_R_KPP, 1, false, 0 },
{ "fspi", IMX_SC_R_FSPI_0, 2, true, 0 },
{ "mu", IMX_SC_R_MU_0A, 14, true, 0 },
/* CONN SS */
{ "con-usb", IMX_SC_R_USB_0, 2, 1 },
{ "con-usb0phy", IMX_SC_R_USB_0_PHY, 1, 0 },
{ "con-usb2", IMX_SC_R_USB_2, 1, 0 },
{ "con-usb2phy", IMX_SC_R_USB_2_PHY, 1, 0 },
{ "con-sdhc", IMX_SC_R_SDHC_0, 3, 1 },
{ "con-enet", IMX_SC_R_ENET_0, 2, 1 },
{ "con-nand", IMX_SC_R_NAND, 1, 0 },
{ "con-mlb", IMX_SC_R_MLB_0, 1, 1 },
/* Audio DMA SS */
{ "adma-audio-pll0", IMX_SC_R_AUDIO_PLL_0, 1, 0 },
{ "adma-audio-pll1", IMX_SC_R_AUDIO_PLL_1, 1, 0 },
{ "adma-audio-clk-0", IMX_SC_R_AUDIO_CLK_0, 1, 0 },
{ "adma-dma0-ch", IMX_SC_R_DMA_0_CH0, 16, 1 },
{ "adma-dma1-ch", IMX_SC_R_DMA_1_CH0, 16, 1 },
{ "adma-dma2-ch", IMX_SC_R_DMA_2_CH0, 5, 1 },
{ "adma-asrc0", IMX_SC_R_ASRC_0, 1, 0 },
{ "adma-asrc1", IMX_SC_R_ASRC_1, 1, 0 },
{ "adma-esai0", IMX_SC_R_ESAI_0, 1, 0 },
{ "adma-spdif0", IMX_SC_R_SPDIF_0, 1, 0 },
{ "adma-sai", IMX_SC_R_SAI_0, 3, 1 },
{ "adma-amix", IMX_SC_R_AMIX, 1, 0 },
{ "adma-mqs0", IMX_SC_R_MQS_0, 1, 0 },
{ "adma-dsp", IMX_SC_R_DSP, 1, 0 },
{ "adma-dsp-ram", IMX_SC_R_DSP_RAM, 1, 0 },
{ "adma-can", IMX_SC_R_CAN_0, 3, 1 },
{ "adma-ftm", IMX_SC_R_FTM_0, 2, 1 },
{ "adma-lpi2c", IMX_SC_R_I2C_0, 4, 1 },
{ "adma-adc", IMX_SC_R_ADC_0, 1, 1 },
{ "adma-lcd", IMX_SC_R_LCD_0, 1, 1 },
{ "adma-lcd0-pwm", IMX_SC_R_LCD_0_PWM_0, 1, 1 },
{ "adma-lpuart", IMX_SC_R_UART_0, 4, 1 },
{ "adma-lpspi", IMX_SC_R_SPI_0, 4, 1 },
/* VPU SS */
{ "vpu", IMX_SC_R_VPU, 1, 0 },
{ "vpu-pid", IMX_SC_R_VPU_PID0, 8, 1 },
{ "vpu-dec0", IMX_SC_R_VPU_DEC_0, 1, 0 },
{ "vpu-enc0", IMX_SC_R_VPU_ENC_0, 1, 0 },
{ "usb", IMX_SC_R_USB_0, 2, true, 0 },
{ "usb0phy", IMX_SC_R_USB_0_PHY, 1, false, 0 },
{ "usb2", IMX_SC_R_USB_2, 1, false, 0 },
{ "usb2phy", IMX_SC_R_USB_2_PHY, 1, false, 0 },
{ "sdhc", IMX_SC_R_SDHC_0, 3, true, 0 },
{ "enet", IMX_SC_R_ENET_0, 2, true, 0 },
{ "nand", IMX_SC_R_NAND, 1, false, 0 },
{ "mlb", IMX_SC_R_MLB_0, 1, true, 0 },
/* AUDIO SS */
{ "audio-pll0", IMX_SC_R_AUDIO_PLL_0, 1, false, 0 },
{ "audio-pll1", IMX_SC_R_AUDIO_PLL_1, 1, false, 0 },
{ "audio-clk-0", IMX_SC_R_AUDIO_CLK_0, 1, false, 0 },
{ "dma0-ch", IMX_SC_R_DMA_0_CH0, 16, true, 0 },
{ "dma1-ch", IMX_SC_R_DMA_1_CH0, 16, true, 0 },
{ "dma2-ch", IMX_SC_R_DMA_2_CH0, 5, true, 0 },
{ "asrc0", IMX_SC_R_ASRC_0, 1, false, 0 },
{ "asrc1", IMX_SC_R_ASRC_1, 1, false, 0 },
{ "esai0", IMX_SC_R_ESAI_0, 1, false, 0 },
{ "spdif0", IMX_SC_R_SPDIF_0, 1, false, 0 },
{ "sai", IMX_SC_R_SAI_0, 3, true, 0 },
{ "amix", IMX_SC_R_AMIX, 1, false, 0 },
{ "mqs0", IMX_SC_R_MQS_0, 1, false, 0 },
{ "dsp", IMX_SC_R_DSP, 1, false, 0 },
{ "dsp-ram", IMX_SC_R_DSP_RAM, 1, false, 0 },
/* DMA SS */
{ "can", IMX_SC_R_CAN_0, 3, true, 0 },
{ "ftm", IMX_SC_R_FTM_0, 2, true, 0 },
{ "lpi2c", IMX_SC_R_I2C_0, 4, true, 0 },
{ "adc", IMX_SC_R_ADC_0, 1, true, 0 },
{ "lcd", IMX_SC_R_LCD_0, 1, true, 0 },
{ "lcd0-pwm", IMX_SC_R_LCD_0_PWM_0, 1, true, 0 },
{ "lpuart", IMX_SC_R_UART_0, 4, true, 0 },
{ "lpspi", IMX_SC_R_SPI_0, 4, true, 0 },
/* VPU SS */
{ "vpu", IMX_SC_R_VPU, 1, false, 0 },
{ "vpu-pid", IMX_SC_R_VPU_PID0, 8, true, 0 },
{ "vpu-dec0", IMX_SC_R_VPU_DEC_0, 1, false, 0 },
{ "vpu-enc0", IMX_SC_R_VPU_ENC_0, 1, false, 0 },
/* GPU SS */
{ "gpu0-pid", IMX_SC_R_GPU_0_PID0, 4, 1 },
{ "gpu0-pid", IMX_SC_R_GPU_0_PID0, 4, true, 0 },
/* HSIO SS */
{ "hsio-pcie-b", IMX_SC_R_PCIE_B, 1, 0 },
{ "hsio-serdes-1", IMX_SC_R_SERDES_1, 1, 0 },
{ "hsio-gpio", IMX_SC_R_HSIO_GPIO, 1, 0 },
{ "pcie-b", IMX_SC_R_PCIE_B, 1, false, 0 },
{ "serdes-1", IMX_SC_R_SERDES_1, 1, false, 0 },
{ "hsio-gpio", IMX_SC_R_HSIO_GPIO, 1, false, 0 },
/* MIPI SS */
{ "mipi0", IMX_SC_R_MIPI_0, 1, false, 0 },
{ "mipi0-pwm0", IMX_SC_R_MIPI_0_PWM_0, 1, false, 0 },
{ "mipi0-i2c", IMX_SC_R_MIPI_0_I2C_0, 2, true, 0 },
/* MIPI/LVDS SS */
{ "mipi0", IMX_SC_R_MIPI_0, 1, 0 },
{ "mipi0-pwm0", IMX_SC_R_MIPI_0_PWM_0, 1, 0 },
{ "mipi0-i2c", IMX_SC_R_MIPI_0_I2C_0, 2, 1 },
{ "lvds0", IMX_SC_R_LVDS_0, 1, 0 },
/* LVDS SS */
{ "lvds0", IMX_SC_R_LVDS_0, 1, false, 0 },
/* DC SS */
{ "dc0", IMX_SC_R_DC_0, 1, 0 },
{ "dc0-pll", IMX_SC_R_DC_0_PLL_0, 2, 1 },
{ "dc0", IMX_SC_R_DC_0, 1, false, 0 },
{ "dc0-pll", IMX_SC_R_DC_0_PLL_0, 2, true, 0 },
};
static const struct imx_sc_pd_soc imx8qxp_scu_pd = {
......@@ -236,7 +243,7 @@ imx_scu_add_pm_domain(struct device *dev, int idx,
if (pd_ranges->postfix)
snprintf(sc_pd->name, sizeof(sc_pd->name),
"%s%i", pd_ranges->name, idx);
"%s%i", pd_ranges->name, pd_ranges->start_from + idx);
else
snprintf(sc_pd->name, sizeof(sc_pd->name),
"%s", pd_ranges->name);
......
drivers/soc/imx/Makefile
View file @ f99552d9
obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o
obj-$(CONFIG_ARCH_MXC) += soc-imx8.o
drivers/soc/imx/gpc.c
View file @ f99552d9
......@@ -406,7 +406,6 @@ static int imx_gpc_probe(struct platform_device *pdev)
const struct imx_gpc_dt_data *of_id_data = of_id->data;
struct device_node *pgc_node;
struct regmap *regmap;
struct resource *res;
void __iomem *base;
int ret;
......@@ -417,8 +416,7 @@ static int imx_gpc_probe(struct platform_device *pdev)
!pgc_node)
return 0;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))
return PTR_ERR(base);
......
drivers/soc/imx/gpcv2.c
View file @ f99552d9
......@@ -136,8 +136,8 @@ static int imx_gpc_pu_pgc_sw_pxx_req(struct generic_pm_domain *genpd,
GPC_PU_PGC_SW_PUP_REQ : GPC_PU_PGC_SW_PDN_REQ;
const bool enable_power_control = !on;
const bool has_regulator = !IS_ERR(domain->regulator);
unsigned long deadline;
int i, ret = 0;
u32 pxx_req;
regmap_update_bits(domain->regmap, GPC_PGC_CPU_MAPPING,
domain->bits.map, domain->bits.map);
......@@ -169,30 +169,19 @@ static int imx_gpc_pu_pgc_sw_pxx_req(struct generic_pm_domain *genpd,
* As per "5.5.9.4 Example Code 4" in IMX7DRM.pdf wait
* for PUP_REQ/PDN_REQ bit to be cleared
*/
deadline = jiffies + msecs_to_jiffies(1);
while (true) {
u32 pxx_req;
regmap_read(domain->regmap, offset, &pxx_req);
if (!(pxx_req & domain->bits.pxx))
break;
if (time_after(jiffies, deadline)) {
dev_err(domain->dev, "falied to command PGC\n");
ret = -ETIMEDOUT;
/*
* If we were in a process of enabling a
* domain and failed we might as well disable
* the regulator we just enabled. And if it
* was the opposite situation and we failed to
* power down -- keep the regulator on
*/
on = !on;
break;
}
cpu_relax();
ret = regmap_read_poll_timeout(domain->regmap, offset, pxx_req,
!(pxx_req & domain->bits.pxx),
0, USEC_PER_MSEC);
if (ret) {
dev_err(domain->dev, "failed to command PGC\n");
/*
* If we were in a process of enabling a
* domain and failed we might as well disable
* the regulator we just enabled. And if it
* was the opposite situation and we failed to
* power down -- keep the regulator on
*/
on = !on;
}
if (enable_power_control)
......@@ -574,7 +563,6 @@ static int imx_gpcv2_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct device_node *pgc_np, *np;
struct regmap *regmap;
struct resource *res;
void __iomem *base;
int ret;
......@@ -584,8 +572,7 @@ static int imx_gpcv2_probe(struct platform_device *pdev)
return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(dev, res);
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))
return PTR_ERR(base);
......
drivers/soc/imx/soc-imx8.c 0 → 100644
View file @ f99552d9
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2019 NXP.
*/
#include <linux/init.h>
#include <linux/io.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#define REV_B1 0x21
#define IMX8MQ_SW_INFO_B1 0x40
#define IMX8MQ_SW_MAGIC_B1 0xff0055aa
struct imx8_soc_data {
char *name;
u32 (*soc_revision)(void);
};
static u32 __init imx8mq_soc_revision(void)
{
struct device_node *np;
void __iomem *ocotp_base;
u32 magic;
u32 rev = 0;
np = of_find_compatible_node(NULL, NULL, "fsl,imx8mq-ocotp");
if (!np)
goto out;
ocotp_base = of_iomap(np, 0);
WARN_ON(!ocotp_base);
magic = readl_relaxed(ocotp_base + IMX8MQ_SW_INFO_B1);
if (magic == IMX8MQ_SW_MAGIC_B1)
rev = REV_B1;
iounmap(ocotp_base);
out:
of_node_put(np);
return rev;
}
static const struct imx8_soc_data imx8mq_soc_data = {
.name = "i.MX8MQ",
.soc_revision = imx8mq_soc_revision,
};
static const struct of_device_id imx8_soc_match[] = {
{ .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
{ }
};
#define imx8_revision(soc_rev) \
soc_rev ? \
kasprintf(GFP_KERNEL, "%d.%d", (soc_rev >> 4) & 0xf, soc_rev & 0xf) : \
"unknown"
static int __init imx8_soc_init(void)
{
struct soc_device_attribute *soc_dev_attr;
struct soc_device *soc_dev;
struct device_node *root;
const struct of_device_id *id;
u32 soc_rev = 0;
const struct imx8_soc_data *data;
int ret;
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return -ENODEV;
soc_dev_attr->family = "Freescale i.MX";
root = of_find_node_by_path("/");
ret = of_property_read_string(root, "model", &soc_dev_attr->machine);
if (ret)
goto free_soc;
id = of_match_node(imx8_soc_match, root);
if (!id)
goto free_soc;
of_node_put(root);
data = id->data;
if (data) {
soc_dev_attr->soc_id = data->name;
if (data->soc_revision)
soc_rev = data->soc_revision();
}
soc_dev_attr->revision = imx8_revision(soc_rev);
if (!soc_dev_attr->revision)
goto free_soc;
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev))
goto free_rev;
return 0;
free_rev:
kfree(soc_dev_attr->revision);
free_soc:
kfree(soc_dev_attr);
of_node_put(root);
return -ENODEV;
}
device_initcall(imx8_soc_init);
include/linux/firmware/imx/sci.h
View file @ f99552d9
......@@ -15,4 +15,9 @@
#include <linux/firmware/imx/svc/misc.h>
#include <linux/firmware/imx/svc/pm.h>
int imx_scu_enable_general_irq_channel(struct device *dev);
int imx_scu_irq_register_notifier(struct notifier_block *nb);
int imx_scu_irq_unregister_notifier(struct notifier_block *nb);
int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable);
#endif /* _SC_SCI_H */
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