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Date: Mon, 23 Dec 2013 16:23:50 +0000
From: Pawel Moll <pawel.moll@....com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: Samuel Ortiz <sameo@...ux.intel.com>,
Arnd Bergmann <arnd@...db.de>, Jon Medhurst <tixy@...aro.org>,
arm@...nel.org, Olof Johansson <olof@...om.net>,
Pawel Moll <pawel.moll@....com>
Subject: [RFC 18/18] mfd: vexpress: Split sysreg functions into MFD cells
This patch splits individual sysreg functions into
separate MFD cells, which then become individual
platform devices with their own drivers.
Signed-off-by: Pawel Moll <pawel.moll@....com>
---
.../devicetree/bindings/arm/vexpress-sysreg.txt | 37 ++-
arch/arm/boot/dts/vexpress-v2m-rs1.dtsi | 76 ++++++-
arch/arm/boot/dts/vexpress-v2m.dtsi | 76 ++++++-
arch/arm/mach-vexpress/v2m.c | 23 +-
drivers/mfd/Kconfig | 11 +
drivers/mfd/Makefile | 2 +-
drivers/mfd/vexpress-sysreg.c | 247 +++++++++++++++------
include/linux/vexpress.h | 16 +-
8 files changed, 377 insertions(+), 111 deletions(-)
diff --git a/Documentation/devicetree/bindings/arm/vexpress-sysreg.txt b/Documentation/devicetree/bindings/arm/vexpress-sysreg.txt
index 5580e9c..8caefec6 100644
--- a/Documentation/devicetree/bindings/arm/vexpress-sysreg.txt
+++ b/Documentation/devicetree/bindings/arm/vexpress-sysreg.txt
@@ -8,6 +8,8 @@ interrupt generation, MMC and NOR Flash control etc.
Required node properties:
- compatible value : = "arm,vexpress,sysreg";
- reg : physical base address and the size of the registers window
+
+Deprecated properties, replaced by GPIO subnodes (see below):
- gpio-controller : specifies that the node is a GPIO controller
- #gpio-cells : size of the GPIO specifier, should be 2:
- first cell is the pseudo-GPIO line number:
@@ -16,12 +18,42 @@ Required node properties:
2 - NOR FLASH WPn
- second cell can take standard GPIO flags (currently ignored).
+Control registers providing pseudo-GPIO lines must be represented
+by subnodes, each of them requiring the following properties:
+- compatible value : one of
+ "arm,vexpress-sysreg,sys_led"
+ "arm,vexpress-sysreg,sys_mci"
+ "arm,vexpress-sysreg,sys_flash"
+- gpio-controller : makes the node a GPIO controller
+- #gpio-cells : size of the GPIO specifier, must be 2:
+ - first cell is the function number:
+ - for sys_led : 0..7 = LED 0..7
+ - for sys_mci : 0 = MMC CARDIN, 1 = MMC WPROT
+ - for sys_flash : 0 = NOR FLASH WPn
+ - second cell can take standard GPIO flags (currently ignored).
+
Example:
v2m_sysreg: sysreg@...00000 {
compatible = "arm,vexpress-sysreg";
reg = <0x10000000 0x1000>;
- gpio-controller;
- #gpio-cells = <2>;
+
+ v2m_led_gpios: sys_led@08 {
+ compatible = "arm,vexpress-sysreg,sys_led";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ v2m_mmc_gpios: sys_mci@48 {
+ compatible = "arm,vexpress-sysreg,sys_mci";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ v2m_flash_gpios: sys_flash@4c {
+ compatible = "arm,vexpress-sysreg,sys_flash";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
};
This block also can also act a bridge to the platform's configuration
@@ -41,6 +73,7 @@ property:
Example:
mcc {
+ compatible = "arm,vexpress,config-bus";
arm,vexpress,config-bridge = <&v2m_sysreg>;
osc@0 {
diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
index ac870fb..756c986 100644
--- a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
+++ b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
@@ -74,8 +74,24 @@
v2m_sysreg: sysreg@...000 {
compatible = "arm,vexpress-sysreg";
reg = <0x010000 0x1000>;
- gpio-controller;
- #gpio-cells = <2>;
+
+ v2m_led_gpios: sys_led@08 {
+ compatible = "arm,vexpress-sysreg,sys_led";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ v2m_mmc_gpios: sys_mci@48 {
+ compatible = "arm,vexpress-sysreg,sys_mci";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ v2m_flash_gpios: sys_flash@4c {
+ compatible = "arm,vexpress-sysreg,sys_flash";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
};
v2m_sysctl: sysctl@...000 {
@@ -113,8 +129,8 @@
compatible = "arm,pl180", "arm,primecell";
reg = <0x050000 0x1000>;
interrupts = <9 10>;
- cd-gpios = <&v2m_sysreg 0 0>;
- wp-gpios = <&v2m_sysreg 1 0>;
+ cd-gpios = <&v2m_mmc_gpios 0 0>;
+ wp-gpios = <&v2m_mmc_gpios 1 0>;
max-frequency = <12000000>;
vmmc-supply = <&v2m_fixed_3v3>;
clocks = <&v2m_clk24mhz>, <&smbclk>;
@@ -265,6 +281,58 @@
clock-output-names = "v2m:refclk32khz";
};
+ leds {
+ compatible = "gpio-leds";
+
+ user@1 {
+ label = "v2m:green:user1";
+ gpios = <&v2m_led_gpios 0 0>;
+ linux,default-trigger = "heartbeat";
+ };
+
+ user@2 {
+ label = "v2m:green:user2";
+ gpios = <&v2m_led_gpios 1 0>;
+ linux,default-trigger = "mmc0";
+ };
+
+ user@3 {
+ label = "v2m:green:user3";
+ gpios = <&v2m_led_gpios 2 0>;
+ linux,default-trigger = "cpu0";
+ };
+
+ user@4 {
+ label = "v2m:green:user4";
+ gpios = <&v2m_led_gpios 3 0>;
+ linux,default-trigger = "cpu1";
+ };
+
+ user@5 {
+ label = "v2m:green:user5";
+ gpios = <&v2m_led_gpios 4 0>;
+ linux,default-trigger = "cpu2";
+ };
+
+ user@6 {
+ label = "v2m:green:user6";
+ gpios = <&v2m_led_gpios 5 0>;
+ linux,default-trigger = "cpu3";
+ };
+
+ user@7 {
+ label = "v2m:green:user7";
+ gpios = <&v2m_led_gpios 6 0>;
+ linux,default-trigger = "cpu4";
+ };
+
+ user@8 {
+ label = "v2m:green:user8";
+ gpios = <&v2m_led_gpios 7 0>;
+ linux,default-trigger = "cpu5";
+ };
+ };
+
mcc {
compatible = "arm,vexpress,config-bus";
arm,vexpress,config-bridge = <&v2m_sysreg>;
diff --git a/arch/arm/boot/dts/vexpress-v2m.dtsi b/arch/arm/boot/dts/vexpress-v2m.dtsi
index f142036..ba856d6 100644
--- a/arch/arm/boot/dts/vexpress-v2m.dtsi
+++ b/arch/arm/boot/dts/vexpress-v2m.dtsi
@@ -73,8 +73,24 @@
v2m_sysreg: sysreg@...00 {
compatible = "arm,vexpress-sysreg";
reg = <0x00000 0x1000>;
- gpio-controller;
- #gpio-cells = <2>;
+
+ v2m_led_gpios: sys_led@08 {
+ compatible = "arm,vexpress-sysreg,sys_led";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ v2m_mmc_gpios: sys_mci@48 {
+ compatible = "arm,vexpress-sysreg,sys_mci";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ v2m_flash_gpios: sys_flash@4c {
+ compatible = "arm,vexpress-sysreg,sys_flash";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
};
v2m_sysctl: sysctl@...00 {
@@ -112,8 +128,8 @@
compatible = "arm,pl180", "arm,primecell";
reg = <0x05000 0x1000>;
interrupts = <9 10>;
- cd-gpios = <&v2m_sysreg 0 0>;
- wp-gpios = <&v2m_sysreg 1 0>;
+ cd-gpios = <&v2m_mmc_gpios 0 0>;
+ wp-gpios = <&v2m_mmc_gpios 1 0>;
max-frequency = <12000000>;
vmmc-supply = <&v2m_fixed_3v3>;
clocks = <&v2m_clk24mhz>, <&smbclk>;
@@ -264,6 +280,58 @@
clock-output-names = "v2m:refclk32khz";
};
+ leds {
+ compatible = "gpio-leds";
+
+ user@1 {
+ label = "v2m:green:user1";
+ gpios = <&v2m_led_gpios 0 0>;
+ linux,default-trigger = "heartbeat";
+ };
+
+ user@2 {
+ label = "v2m:green:user2";
+ gpios = <&v2m_led_gpios 1 0>;
+ linux,default-trigger = "mmc0";
+ };
+
+ user@3 {
+ label = "v2m:green:user3";
+ gpios = <&v2m_led_gpios 2 0>;
+ linux,default-trigger = "cpu0";
+ };
+
+ user@4 {
+ label = "v2m:green:user4";
+ gpios = <&v2m_led_gpios 3 0>;
+ linux,default-trigger = "cpu1";
+ };
+
+ user@5 {
+ label = "v2m:green:user5";
+ gpios = <&v2m_led_gpios 4 0>;
+ linux,default-trigger = "cpu2";
+ };
+
+ user@6 {
+ label = "v2m:green:user6";
+ gpios = <&v2m_led_gpios 5 0>;
+ linux,default-trigger = "cpu3";
+ };
+
+ user@7 {
+ label = "v2m:green:user7";
+ gpios = <&v2m_led_gpios 6 0>;
+ linux,default-trigger = "cpu4";
+ };
+
+ user@8 {
+ label = "v2m:green:user8";
+ gpios = <&v2m_led_gpios 7 0>;
+ linux,default-trigger = "cpu5";
+ };
+ };
+
mcc {
compatible = "arm,vexpress,config-bus";
arm,vexpress,config-bridge = <&v2m_sysreg>;
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 325ae06..c39b14a 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -201,8 +201,9 @@ static struct platform_device v2m_cf_device = {
static struct mmci_platform_data v2m_mmci_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
- .gpio_wp = VEXPRESS_GPIO_MMC_WPROT,
- .gpio_cd = VEXPRESS_GPIO_MMC_CARDIN,
+ .status = vexpress_get_mci_cardin,
+ .gpio_cd = -1,
+ .gpio_wp = -1,
};
static struct resource v2m_sysreg_resources[] = {
@@ -394,23 +395,6 @@ void __init v2m_dt_map_io(void)
iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
}
-void __init v2m_dt_init_early(void)
-{
- u32 dt_hbi;
-
- vexpress_sysreg_of_early_init();
-
- /* Confirm board type against DT property, if available */
- if (of_property_read_u32(of_allnodes, "arm,hbi", &dt_hbi) == 0) {
- u32 hbi = vexpress_get_hbi(VEXPRESS_SITE_MASTER);
-
- if (WARN_ON(dt_hbi != hbi))
- pr_warning("vexpress: DT HBI (%x) is not matching "
- "hardware (%x)!\n", dt_hbi, hbi);
- }
-}
-
-
static void __init v2m_dt_init(void)
{
l2x0_of_init(0x00400000, 0xfe0fffff);
@@ -427,6 +411,5 @@ DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
.smp = smp_ops(vexpress_smp_dt_ops),
.smp_init = smp_init_ops(vexpress_smp_init_ops),
.map_io = v2m_dt_map_io,
- .init_early = v2m_dt_init_early,
.init_machine = v2m_dt_init,
MACHINE_END
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 4c8cdc3..a4effd4 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1200,3 +1200,14 @@ config MCP_UCB1200_TS
endmenu
+config MFD_VEXPRESS_SYSREG
+ bool "Versatile Express System Registers"
+ depends on VEXPRESS_CONFIG
+ default y
+ select CLKSRC_MMIO
+ select GPIO_GENERIC_PLATFORM
+ select MFD_CORE
+ select MFD_SYSCON
+ help
+ System Registers are the platform configuration block
+ on the ARM Ltd. Versatile Express board.
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 0277aa8..b6c9c32 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -159,7 +159,7 @@ obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o
obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o
obj-$(CONFIG_MFD_SYSCON) += syscon.o
obj-$(CONFIG_MFD_LM3533) += lm3533-core.o lm3533-ctrlbank.o
-obj-$(CONFIG_VEXPRESS_CONFIG) += vexpress-sysreg.o
+obj-$(CONFIG_MFD_VEXPRESS_SYSREG) += vexpress-sysreg.o
obj-$(CONFIG_MFD_RETU) += retu-mfd.o
obj-$(CONFIG_MFD_AS3711) += as3711.o
obj-$(CONFIG_MFD_AS3722) += as3722.o
diff --git a/drivers/mfd/vexpress-sysreg.c b/drivers/mfd/vexpress-sysreg.c
index 31b3290..2258344 100644
--- a/drivers/mfd/vexpress-sysreg.c
+++ b/drivers/mfd/vexpress-sysreg.c
@@ -8,26 +8,24 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * Copyright (C) 2012 ARM Limited
+ * Copyright (C) 2013 ARM Limited
*/
+#include <linux/basic_mmio_gpio.h>
#include <linux/err.h>
-#include <linux/gpio.h>
#include <linux/io.h>
-#include <linux/leds.h>
+#include <linux/mfd/core.h>
#include <linux/of_address.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
-#include <linux/regulator/driver.h>
#include <linux/slab.h>
#include <linux/stat.h>
-#include <linux/timer.h>
#include <linux/vexpress.h>
#define SYS_ID 0x000
#define SYS_SW 0x004
#define SYS_LED 0x008
#define SYS_100HZ 0x024
-#define SYS_FLAGS 0x030
#define SYS_FLAGSSET 0x030
#define SYS_FLAGSCLR 0x034
#define SYS_NVFLAGS 0x038
@@ -45,65 +43,34 @@
#define SYS_CFGCTRL 0x0a4
#define SYS_CFGSTAT 0x0a8
-#define SYS_HBI_MASK 0xfff
-#define SYS_ID_HBI_SHIFT 16
-#define SYS_PROCIDx_HBI_SHIFT 0
-
-#define SYS_LED_LED(n) (1 << (n))
-
-#define SYS_MCI_CARDIN (1 << 0)
-#define SYS_MCI_WPROT (1 << 1)
-
-#define SYS_FLASH_WPn (1 << 0)
-
#define SYS_MISC_MASTERSITE (1 << 14)
-#define SYS_CFGCTRL_START (1 << 31)
-#define SYS_CFGCTRL_WRITE (1 << 30)
-#define SYS_CFGCTRL_DCC(n) (((n) & 0xf) << 26)
-#define SYS_CFGCTRL_FUNC(n) (((n) & 0x3f) << 20)
-#define SYS_CFGCTRL_SITE(n) (((n) & 0x3) << 16)
-#define SYS_CFGCTRL_POSITION(n) (((n) & 0xf) << 12)
-#define SYS_CFGCTRL_DEVICE(n) (((n) & 0xfff) << 0)
-#define SYS_CFGSTAT_ERR (1 << 1)
-#define SYS_CFGSTAT_COMPLETE (1 << 0)
+static int vexpress_sysreg_get_master(void __iomem *base)
+{
+ if (readl(base + SYS_MISC) & SYS_MISC_MASTERSITE)
+ return VEXPRESS_SITE_DB2;
+ return VEXPRESS_SITE_DB1;
+}
-static void __iomem *vexpress_sysreg_base;
+/* Non-DT case platform functions, to be gone... */
-void vexpress_flags_set(u32 data)
-{
- writel(~0, vexpress_sysreg_base + SYS_FLAGSCLR);
- writel(data, vexpress_sysreg_base + SYS_FLAGSSET);
-}
+static void __iomem *vexpress_sysreg_base;
u32 vexpress_get_procid(int site)
{
if (site == VEXPRESS_SITE_MASTER)
- site = vexpress_config_get_master();
+ site = vexpress_sysreg_get_master(vexpress_sysreg_base);
return readl(vexpress_sysreg_base + (site == VEXPRESS_SITE_DB1 ?
SYS_PROCID0 : SYS_PROCID1));
}
-u32 vexpress_get_hbi(int site)
+unsigned int vexpress_get_mci_cardin(struct device *dev)
{
- u32 id;
-
- switch (site) {
- case VEXPRESS_SITE_MB:
- id = readl(vexpress_sysreg_base + SYS_ID);
- return (id >> SYS_ID_HBI_SHIFT) & SYS_HBI_MASK;
- case VEXPRESS_SITE_MASTER:
- case VEXPRESS_SITE_DB1:
- case VEXPRESS_SITE_DB2:
- id = vexpress_get_procid(site);
- return (id >> SYS_PROCIDx_HBI_SHIFT) & SYS_HBI_MASK;
- }
-
- return ~0;
+ return readl(vexpress_sysreg_base + SYS_MCI) & 1;
}
void __iomem *vexpress_get_24mhz_clock_base(void)
@@ -111,34 +78,184 @@ void __iomem *vexpress_get_24mhz_clock_base(void)
return vexpress_sysreg_base + SYS_24MHZ;
}
-
-void vexpress_sysreg_setup(struct device_node *node)
+void __init vexpress_sysreg_early_init(void __iomem *base)
{
- if (WARN_ON(!vexpress_sysreg_base))
+ if (WARN_ON(!base))
return;
- if (readl(vexpress_sysreg_base + SYS_MISC) & SYS_MISC_MASTERSITE)
- vexpress_config_set_master(VEXPRESS_SITE_DB2);
+ vexpress_sysreg_base = base;
+
+ vexpress_config_set_master(vexpress_sysreg_get_master(base));
+}
+
+
+/* Versatile SMP boot protocol helper */
+
+void vexpress_flags_set(u32 data)
+{
+ struct device_node *node = of_find_compatible_node(NULL, NULL,
+ "arm,vexpress-sysreg");
+ void __iomem *base;
+
+ if (node)
+ base = of_iomap(node, 0);
else
- vexpress_config_set_master(VEXPRESS_SITE_DB1);
+ base = vexpress_sysreg_base;
+
+ if (WARN_ON(!base))
+ return;
+
+ writel(~0, base + SYS_FLAGSCLR);
+ writel(data, base + SYS_FLAGSSET);
+
+ if (node)
+ iounmap(base);
}
-void __init vexpress_sysreg_early_init(void __iomem *base)
+
+/* The sysreg block is just a random collection of various functions... */
+
+static const char vexpress_sysreg_sys_id_pdata[] = "sys_id";
+
+static struct bgpio_pdata vexpress_sysreg_sys_led_pdata = {
+ .label = "sys_led",
+ .base = -1,
+ .ngpio = 8,
+};
+
+static struct bgpio_pdata vexpress_sysreg_sys_mci_pdata = {
+ .label = "sys_mci",
+ .base = -1,
+ .ngpio = 2,
+};
+
+static struct bgpio_pdata vexpress_sysreg_sys_flash_pdata = {
+ .label = "sys_flash",
+ .base = -1,
+ .ngpio = 1,
+};
+
+static const char vexpress_sysreg_sys_misc_pdata[] = "sys_misc";
+
+static const char vexpress_sysreg_sys_procid_pdata[] = "sys_procid";
+
+static struct mfd_cell vexpress_sysreg_cells[] = {
+ {
+ .name = "syscon",
+ .of_compatible = "arm,vexpress-sysreg,sys_id",
+ .num_resources = 1,
+ .resources = (struct resource []) {
+ DEFINE_RES_MEM(SYS_ID, 0x4),
+ },
+ .platform_data = &vexpress_sysreg_sys_id_pdata,
+ .pdata_size = sizeof(vexpress_sysreg_sys_id_pdata),
+ }, {
+ .name = "basic-mmio-gpio",
+ .of_compatible = "arm,vexpress-sysreg,sys_led",
+ .num_resources = 1,
+ .resources = (struct resource []) {
+ DEFINE_RES_MEM_NAMED(SYS_LED, 0x4, "dat"),
+ },
+ .platform_data = &vexpress_sysreg_sys_led_pdata,
+ .pdata_size = sizeof(vexpress_sysreg_sys_led_pdata),
+ }, {
+ .name = "basic-mmio-gpio",
+ .of_compatible = "arm,vexpress-sysreg,sys_mci",
+ .num_resources = 1,
+ .resources = (struct resource []) {
+ DEFINE_RES_MEM_NAMED(SYS_MCI, 0x4, "dat"),
+ },
+ .platform_data = &vexpress_sysreg_sys_mci_pdata,
+ .pdata_size = sizeof(vexpress_sysreg_sys_mci_pdata),
+ }, {
+ .name = "basic-mmio-gpio",
+ .of_compatible = "arm,vexpress-sysreg,sys_flash",
+ .num_resources = 1,
+ .resources = (struct resource []) {
+ DEFINE_RES_MEM_NAMED(SYS_FLASH, 0x4, "dat"),
+ },
+ .platform_data = &vexpress_sysreg_sys_flash_pdata,
+ .pdata_size = sizeof(vexpress_sysreg_sys_flash_pdata),
+ }, {
+ .name = "syscon",
+ .num_resources = 1,
+ .resources = (struct resource []) {
+ DEFINE_RES_MEM(SYS_MISC, 0x4),
+ },
+ .platform_data = &vexpress_sysreg_sys_misc_pdata,
+ .pdata_size = sizeof(vexpress_sysreg_sys_misc_pdata),
+ }, {
+ .name = "syscon",
+ .num_resources = 1,
+ .resources = (struct resource []) {
+ DEFINE_RES_MEM(SYS_PROCID0, 0x8),
+ },
+ .platform_data = &vexpress_sysreg_sys_procid_pdata,
+ .pdata_size = sizeof(vexpress_sysreg_sys_procid_pdata),
+ }, {
+ .name = "vexpress-syscfg",
+ .num_resources = 1,
+ .resources = (struct resource []) {
+ DEFINE_RES_MEM(SYS_CFGDATA, 0xc),
+ },
+ }
+};
+
+static int vexpress_sysreg_probe(struct platform_device *pdev)
{
- vexpress_sysreg_base = base;
- vexpress_sysreg_setup(NULL);
+ struct resource *mem;
+ void __iomem *base;
+ struct bgpio_chip *mmc_gpio_chip;
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem)
+ return -EINVAL;
+
+ base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
+ if (!base)
+ return -ENOMEM;
+
+ vexpress_config_set_master(vexpress_sysreg_get_master(base));
+
+ /*
+ * Duplicated SYS_MCI pseudo-GPIO controller for compatibility with
+ * older trees using sysreg node for MMC control lines.
+ */
+ mmc_gpio_chip = devm_kzalloc(&pdev->dev, sizeof(*mmc_gpio_chip),
+ GFP_KERNEL);
+ if (!mmc_gpio_chip)
+ return -ENOMEM;
+ bgpio_init(mmc_gpio_chip, &pdev->dev, 0x4, base + SYS_MCI, NULL,
+ NULL, NULL, NULL, 0);
+ mmc_gpio_chip->gc.ngpio = 2;
+ gpiochip_add(&mmc_gpio_chip->gc);
+
+ return mfd_add_devices(&pdev->dev, PLATFORM_DEVID_AUTO,
+ vexpress_sysreg_cells,
+ ARRAY_SIZE(vexpress_sysreg_cells), mem, 0, 0);
}
-void __init vexpress_sysreg_of_early_init(void)
+static const struct of_device_id vexpress_sysreg_match[] = {
+ { .compatible = "arm,vexpress-sysreg", },
+ {},
+};
+
+static struct platform_driver vexpress_sysreg_driver = {
+ .driver = {
+ .name = "vexpress-sysreg",
+ .of_match_table = vexpress_sysreg_match,
+ },
+ .probe = vexpress_sysreg_probe,
+};
+
+static int __init vexpress_sysreg_init(void)
{
struct device_node *node;
- if (vexpress_sysreg_base)
- return;
+ /* Need the sysreg early, before any other device... */
+ for_each_matching_node(node, vexpress_sysreg_match)
+ of_platform_device_create(node, NULL, NULL);
- node = of_find_compatible_node(NULL, NULL, "arm,vexpress-sysreg");
- if (node) {
- vexpress_sysreg_base = of_iomap(node, 0);
- vexpress_sysreg_setup(node);
- }
+ return platform_driver_register(&vexpress_sysreg_driver);
}
+core_initcall(vexpress_sysreg_init);
diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h
index 203f63a..72dd902 100644
--- a/include/linux/vexpress.h
+++ b/include/linux/vexpress.h
@@ -23,18 +23,6 @@
#define VEXPRESS_SITE_DB2 2
#define VEXPRESS_SITE_MASTER 0xf
-#define VEXPRESS_GPIO_MMC_CARDIN 0
-#define VEXPRESS_GPIO_MMC_WPROT 1
-#define VEXPRESS_GPIO_FLASH_WPn 2
-#define VEXPRESS_GPIO_LED0 3
-#define VEXPRESS_GPIO_LED1 4
-#define VEXPRESS_GPIO_LED2 5
-#define VEXPRESS_GPIO_LED3 6
-#define VEXPRESS_GPIO_LED4 7
-#define VEXPRESS_GPIO_LED5 8
-#define VEXPRESS_GPIO_LED6 9
-#define VEXPRESS_GPIO_LED7 10
-
/* Config infrastructure */
void vexpress_config_set_master(u32 site);
@@ -55,12 +43,10 @@ struct regmap *devm_vexpress_syscfg_regmap_init(struct device *dev,
u32 site, u32 position, u32 dcc, u32 function, u32 device);
u32 vexpress_get_procid(int site);
-u32 vexpress_get_hbi(int site);
+unsigned int vexpress_get_mci_cardin(struct device *dev);
void *vexpress_get_24mhz_clock_base(void);
void vexpress_flags_set(u32 data);
-
void vexpress_sysreg_early_init(void __iomem *base);
-void vexpress_sysreg_of_early_init(void);
/* Clocks */
--
1.8.3.2
--
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