vexpress: Move setting master site to vexpress-config bus

There's only a single caller of vexpress_config_set_master() from
vexpress-sysreg.c. Let's just make the registers needed available to
vexpress-config and move all the code there. The registers needed aren't
used anywhere else either. With this, we can get rid of the private API
between these 2 drivers.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/drivers/bus/vexpress-config.c b/drivers/bus/vexpress-config.c
index 43deb4d..caa35a4 100644 (file)
--- a/drivers/bus/vexpress-config.c
+++ b/drivers/bus/vexpress-config.c
@@ -14,9 +14,17 @@
 #include <linux/slab.h>
 #include <linux/vexpress.h>
 
-#define SYS_CFGDATA            0x0
+#define SYS_MISC               0x0
+#define SYS_MISC_MASTERSITE    (1 << 14)
 
-#define SYS_CFGCTRL            0x4
+#define SYS_PROCID0            0x24
+#define SYS_PROCID1            0x28
+#define SYS_HBI_MASK           0xfff
+#define SYS_PROCIDx_HBI_SHIFT  0
+
+#define SYS_CFGDATA            0x40
+
+#define SYS_CFGCTRL            0x44
 #define SYS_CFGCTRL_START      (1 << 31)
 #define SYS_CFGCTRL_WRITE      (1 << 30)
 #define SYS_CFGCTRL_DCC(n)     (((n) & 0xf) << 26)
@@ -25,10 +33,14 @@
 #define SYS_CFGCTRL_POSITION(n)        (((n) & 0xf) << 12)
 #define SYS_CFGCTRL_DEVICE(n)  (((n) & 0xfff) << 0)
 
-#define SYS_CFGSTAT            0x8
+#define SYS_CFGSTAT            0x48
 #define SYS_CFGSTAT_ERR                (1 << 1)
 #define SYS_CFGSTAT_COMPLETE   (1 << 0)
 
+#define VEXPRESS_SITE_MB               0
+#define VEXPRESS_SITE_DB1              1
+#define VEXPRESS_SITE_DB2              2
+#define VEXPRESS_SITE_MASTER           0xf
 
 struct vexpress_syscfg {
        struct device *dev;
@@ -59,7 +71,7 @@ static DEFINE_MUTEX(vexpress_config_mutex);
 static u32 vexpress_config_site_master = VEXPRESS_SITE_MASTER;
 
 
-void vexpress_config_set_master(u32 site)
+static void vexpress_config_set_master(u32 site)
 {
        vexpress_config_site_master = site;
 }
@@ -340,6 +352,8 @@ static int vexpress_syscfg_probe(struct platform_device *pdev)
        struct resource *res;
        struct vexpress_config_bridge *bridge;
        struct device_node *node;
+       int master;
+       u32 dt_hbi;
 
        syscfg = devm_kzalloc(&pdev->dev, sizeof(*syscfg), GFP_KERNEL);
        if (!syscfg)
@@ -361,6 +375,21 @@ static int vexpress_syscfg_probe(struct platform_device *pdev)
 
        dev_set_drvdata(&pdev->dev, bridge);
 
+       master = readl(syscfg->base + SYS_MISC) & SYS_MISC_MASTERSITE ?
+                       VEXPRESS_SITE_DB2 : VEXPRESS_SITE_DB1;
+       vexpress_config_set_master(master);
+
+       /* Confirm board type against DT property, if available */
+       if (of_property_read_u32(of_root, "arm,hbi", &dt_hbi) == 0) {
+               u32 id = readl(syscfg->base + (master == VEXPRESS_SITE_DB1 ?
+                                SYS_PROCID0 : SYS_PROCID1));
+               u32 hbi = (id >> SYS_PROCIDx_HBI_SHIFT) & SYS_HBI_MASK;
+
+               if (WARN_ON(dt_hbi != hbi))
+                       dev_warn(&pdev->dev, "DT HBI (%x) is not matching hardware (%x)!\n",
+                                       dt_hbi, hbi);
+       }
+
        for_each_compatible_node(node, NULL, "arm,vexpress,config-bus") {
                struct device_node *bridge_np;
 

diff --git a/drivers/mfd/vexpress-sysreg.c b/drivers/mfd/vexpress-sysreg.c
index eeeeb1d..aaf24af 100644 (file)
--- a/drivers/mfd/vexpress-sysreg.c
+++ b/drivers/mfd/vexpress-sysreg.c
@@ -14,7 +14,6 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/stat.h>
-#include <linux/vexpress.h>
 
 #define SYS_ID                 0x000
 #define SYS_SW                 0x004
@@ -37,11 +36,6 @@
 #define SYS_CFGCTRL            0x0a4
 #define SYS_CFGSTAT            0x0a8
 
-#define SYS_HBI_MASK           0xfff
-#define SYS_PROCIDx_HBI_SHIFT  0
-
-#define SYS_MISC_MASTERSITE    (1 << 14)
-
 /* The sysreg block is just a random collection of various functions... */
 
 static struct bgpio_pdata vexpress_sysreg_sys_led_pdata = {
@@ -94,7 +88,7 @@ static struct mfd_cell vexpress_sysreg_cells[] = {
                .name = "vexpress-syscfg",
                .num_resources = 1,
                .resources = (struct resource []) {
-                       DEFINE_RES_MEM(SYS_CFGDATA, 0xc),
+                       DEFINE_RES_MEM(SYS_MISC, 0x4c),
                },
        }
 };
@@ -104,8 +98,6 @@ static int vexpress_sysreg_probe(struct platform_device *pdev)
        struct resource *mem;
        void __iomem *base;
        struct gpio_chip *mmc_gpio_chip;
-       int master;
-       u32 dt_hbi;
 
        mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        if (!mem)
@@ -115,21 +107,6 @@ static int vexpress_sysreg_probe(struct platform_device *pdev)
        if (!base)
                return -ENOMEM;
 
-       master = readl(base + SYS_MISC) & SYS_MISC_MASTERSITE ?
-                       VEXPRESS_SITE_DB2 : VEXPRESS_SITE_DB1;
-       vexpress_config_set_master(master);
-
-       /* Confirm board type against DT property, if available */
-       if (of_property_read_u32(of_root, "arm,hbi", &dt_hbi) == 0) {
-               u32 id = readl(base + (master == VEXPRESS_SITE_DB1 ?
-                                SYS_PROCID0 : SYS_PROCID1));
-               u32 hbi = (id >> SYS_PROCIDx_HBI_SHIFT) & SYS_HBI_MASK;
-
-               if (WARN_ON(dt_hbi != hbi))
-                       dev_warn(&pdev->dev, "DT HBI (%x) is not matching hardware (%x)!\n",
-                                       dt_hbi, hbi);
-       }
-
        /*
         * Duplicated SYS_MCI pseudo-GPIO controller for compatibility with
         * older trees using sysreg node for MMC control lines.

diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h
index 65096c7..2f9dd07 100644 (file)
--- a/include/linux/vexpress.h
+++ b/include/linux/vexpress.h
@@ -10,15 +10,6 @@
 #include <linux/device.h>
 #include <linux/regmap.h>
 
-#define VEXPRESS_SITE_MB               0
-#define VEXPRESS_SITE_DB1              1
-#define VEXPRESS_SITE_DB2              2
-#define VEXPRESS_SITE_MASTER           0xf
-
-/* Config infrastructure */
-
-void vexpress_config_set_master(u32 site);
-
 /* Config regmap API */
 
 struct regmap *devm_regmap_init_vexpress_config(struct device *dev);