mfd: vexpress: Define the device as MFD cells

This patch - finally, after over 6 months! :-( - addresses
Samuel's request to split the vexpress-sysreg driver into
smaller portions and define the device in a form of MFD
cells:

* LEDs code has been completely removed and replaced with
  "gpio-leds" nodes in the tree (referencing dedicated
  GPIO subnodes in sysreg - bindings documentation updated);
  this also better fits the reality as some variants of the
  motherboard don't have all the LEDs populated

* syscfg bridge code has been extracted into a separate
  driver (placed in drivers/misc for no better place)

* all the ID & MISC registers are defined as sysconf
  making them available for other drivers should they need
  to use them (and also to the user via /sys/kernel/debug/regmap
  which can be helpful in platform debugging)

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 7 insertions, 8 deletions

diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index ac95220..90f04c9 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[] = {
@@ -351,10 +352,10 @@ static void __init v2m_init(void)
 	for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
 		amba_device_register(v2m_amba_devs[i], &iomem_resource);
 
-	vexpress_sysreg_config_device_register(&v2m_muxfpga_device);
-	vexpress_sysreg_config_device_register(&v2m_shutdown_device);
-	vexpress_sysreg_config_device_register(&v2m_reboot_device);
-	vexpress_sysreg_config_device_register(&v2m_dvimode_device);
+	vexpress_syscfg_device_register(&v2m_muxfpga_device);
+	vexpress_syscfg_device_register(&v2m_shutdown_device);
+	vexpress_syscfg_device_register(&v2m_reboot_device);
+	vexpress_syscfg_device_register(&v2m_dvimode_device);
 
 	ct_desc->init_tile();
 }
@@ -409,8 +410,6 @@ 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);