/* * Clock driver for the ARM Integrator/AP and Integrator/CP boards * Copyright (C) 2012 Linus Walleij * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include "clk-icst.h" #define INTEGRATOR_HDR_LOCK_OFFSET 0x14 /* Base offset for the core module */ static void __iomem *cm_base; static const struct icst_params cp_auxosc_params = { .vco_max = ICST525_VCO_MAX_5V, .vco_min = ICST525_VCO_MIN, .vd_min = 8, .vd_max = 263, .rd_min = 3, .rd_max = 65, .s2div = icst525_s2div, .idx2s = icst525_idx2s, }; static const struct clk_icst_desc __initdata cm_auxosc_desc = { .params = &cp_auxosc_params, .vco_offset = 0x1c, .lock_offset = INTEGRATOR_HDR_LOCK_OFFSET, }; static void __init of_integrator_cm_osc_setup(struct device_node *np) { 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) { /* Remap the core module base if not done yet */ struct device_node *parent; parent = of_get_parent(np); if (!np) { pr_err("no parent on core module clock\n"); return; } cm_base = of_iomap(parent, 0); if (!cm_base) { pr_err("could not remap core module base\n"); return; } } parent_name = of_clk_get_parent_name(np, 0); clk = icst_clk_register(NULL, desc, clk_name, parent_name, cm_base); if (!IS_ERR(clk)) of_clk_add_provider(np, of_clk_src_simple_get, clk); } CLK_OF_DECLARE(integrator_cm_auxosc_clk, "arm,integrator-cm-auxosc", of_integrator_cm_osc_setup);