clk: versatile: add versatile OSC support

Versatile platforms share the same OSC programming model as Integrator
platforms. Add the necessary parameters and init functions for Versatile.

Renaming the file to clk-versatile.c as versatile is used as the family
name for ARM, Ltd. boards.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/clk/versatile/Makefile b/drivers/clk/versatile/Makefile
index fd449f9..162e519 100644 (file)
--- a/drivers/clk/versatile/Makefile
+++ b/drivers/clk/versatile/Makefile
@@ -1,6 +1,5 @@
 # Makefile for Versatile-specific clocks
-obj-$(CONFIG_ICST)             += clk-icst.o
-obj-$(CONFIG_ARCH_INTEGRATOR)  += clk-integrator.o
+obj-$(CONFIG_ICST)             += clk-icst.o clk-versatile.o
 obj-$(CONFIG_INTEGRATOR_IMPD1) += clk-impd1.o
 obj-$(CONFIG_ARCH_REALVIEW)    += clk-realview.o
 obj-$(CONFIG_ARCH_VEXPRESS)    += clk-vexpress.o

diff --git a/drivers/clk/versatile/clk-integrator.c b/drivers/clk/versatile/clk-versatile.c
similarity index 63%
rename from drivers/clk/versatile/clk-integrator.c
rename to drivers/clk/versatile/clk-versatile.c
index 734c4b8..a76981e 100644 (file)
--- a/drivers/clk/versatile/clk-integrator.c
+++ b/drivers/clk/versatile/clk-versatile.c
@@ -1,5 +1,6 @@
 /*
- * Clock driver for the ARM Integrator/AP and Integrator/CP boards
+ * Clock driver for the ARM Integrator/AP, Integrator/CP, Versatile AB and
+ * Versatile PB boards.
  * Copyright (C) 2012 Linus Walleij
  *
  * This program is free software; you can redistribute it and/or modify
@@ -17,6 +18,9 @@
 
 #define INTEGRATOR_HDR_LOCK_OFFSET     0x14
 
+#define VERSATILE_SYS_OSCCLCD_OFFSET   0x1c
+#define VERSATILE_SYS_LOCK_OFFSET      0x20
+
 /* Base offset for the core module */
 static void __iomem *cm_base;
 
@@ -37,11 +41,27 @@ static const struct clk_icst_desc __initdata cm_auxosc_desc = {
        .lock_offset = INTEGRATOR_HDR_LOCK_OFFSET,
 };
 
-static void __init of_integrator_cm_osc_setup(struct device_node *np)
+static const struct icst_params versatile_auxosc_params = {
+       .vco_max        = ICST307_VCO_MAX,
+       .vco_min        = ICST307_VCO_MIN,
+       .vd_min         = 4 + 8,
+       .vd_max         = 511 + 8,
+       .rd_min         = 1 + 2,
+       .rd_max         = 127 + 2,
+       .s2div          = icst307_s2div,
+       .idx2s          = icst307_idx2s,
+};
+
+static const struct clk_icst_desc versatile_auxosc_desc __initconst = {
+       .params = &versatile_auxosc_params,
+       .vco_offset = VERSATILE_SYS_OSCCLCD_OFFSET,
+       .lock_offset = VERSATILE_SYS_LOCK_OFFSET,
+};
+static void __init cm_osc_setup(struct device_node *np,
+                               const struct clk_icst_desc *desc)
 {
        struct clk *clk = ERR_PTR(-EINVAL);
        const char *clk_name = np->name;
-       const struct clk_icst_desc *desc = &cm_auxosc_desc;
        const char *parent_name;
 
        if (!cm_base) {
@@ -65,5 +85,17 @@ static void __init of_integrator_cm_osc_setup(struct device_node *np)
        if (!IS_ERR(clk))
                of_clk_add_provider(np, of_clk_src_simple_get, clk);
 }
+
+static void __init of_integrator_cm_osc_setup(struct device_node *np)
+{
+       cm_osc_setup(np, &cm_auxosc_desc);
+}
 CLK_OF_DECLARE(integrator_cm_auxosc_clk,
        "arm,integrator-cm-auxosc", of_integrator_cm_osc_setup);
+
+static void __init of_versatile_cm_osc_setup(struct device_node *np)
+{
+       cm_osc_setup(np, &versatile_auxosc_desc);
+}
+CLK_OF_DECLARE(versatile_cm_auxosc_clk,
+              "arm,versatile-cm-auxosc", of_versatile_cm_osc_setup);