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path: root/drivers/clk/mvebu/clk-gating-ctrl.c
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Diffstat (limited to 'drivers/clk/mvebu/clk-gating-ctrl.c')
-rw-r--r--drivers/clk/mvebu/clk-gating-ctrl.c250
1 files changed, 0 insertions, 250 deletions
diff --git a/drivers/clk/mvebu/clk-gating-ctrl.c b/drivers/clk/mvebu/clk-gating-ctrl.c
deleted file mode 100644
index ebf141d..0000000
--- a/drivers/clk/mvebu/clk-gating-ctrl.c
+++ /dev/null
@@ -1,250 +0,0 @@
-/*
- * Marvell MVEBU clock gating control.
- *
- * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
- * Andrew Lunn <andrew@lunn.ch>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-#include <linux/kernel.h>
-#include <linux/bitops.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/clkdev.h>
-#include <linux/clk-provider.h>
-#include <linux/clk/mvebu.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-struct mvebu_gating_ctrl {
- spinlock_t lock;
- struct clk **gates;
- int num_gates;
-};
-
-struct mvebu_soc_descr {
- const char *name;
- const char *parent;
- int bit_idx;
-};
-
-#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw)
-
-static struct clk *mvebu_clk_gating_get_src(
- struct of_phandle_args *clkspec, void *data)
-{
- struct mvebu_gating_ctrl *ctrl = (struct mvebu_gating_ctrl *)data;
- int n;
-
- if (clkspec->args_count < 1)
- return ERR_PTR(-EINVAL);
-
- for (n = 0; n < ctrl->num_gates; n++) {
- struct clk_gate *gate =
- to_clk_gate(__clk_get_hw(ctrl->gates[n]));
- if (clkspec->args[0] == gate->bit_idx)
- return ctrl->gates[n];
- }
- return ERR_PTR(-ENODEV);
-}
-
-static void __init mvebu_clk_gating_setup(
- struct device_node *np, const struct mvebu_soc_descr *descr)
-{
- struct mvebu_gating_ctrl *ctrl;
- struct clk *clk;
- void __iomem *base;
- const char *default_parent = NULL;
- int n;
-
- base = of_iomap(np, 0);
-
- clk = of_clk_get(np, 0);
- if (!IS_ERR(clk)) {
- default_parent = __clk_get_name(clk);
- clk_put(clk);
- }
-
- ctrl = kzalloc(sizeof(struct mvebu_gating_ctrl), GFP_KERNEL);
- if (WARN_ON(!ctrl))
- return;
-
- spin_lock_init(&ctrl->lock);
-
- /*
- * Count, allocate, and register clock gates
- */
- for (n = 0; descr[n].name;)
- n++;
-
- ctrl->num_gates = n;
- ctrl->gates = kzalloc(ctrl->num_gates * sizeof(struct clk *),
- GFP_KERNEL);
- if (WARN_ON(!ctrl->gates)) {
- kfree(ctrl);
- return;
- }
-
- for (n = 0; n < ctrl->num_gates; n++) {
- u8 flags = 0;
- const char *parent =
- (descr[n].parent) ? descr[n].parent : default_parent;
-
- /*
- * On Armada 370, the DDR clock is a special case: it
- * isn't taken by any driver, but should anyway be
- * kept enabled, so we mark it as IGNORE_UNUSED for
- * now.
- */
- if (!strcmp(descr[n].name, "ddr"))
- flags |= CLK_IGNORE_UNUSED;
-
- ctrl->gates[n] = clk_register_gate(NULL, descr[n].name, parent,
- flags, base, descr[n].bit_idx, 0, &ctrl->lock);
- WARN_ON(IS_ERR(ctrl->gates[n]));
- }
- of_clk_add_provider(np, mvebu_clk_gating_get_src, ctrl);
-}
-
-/*
- * SoC specific clock gating control
- */
-
-#ifdef CONFIG_MACH_ARMADA_370
-static const struct mvebu_soc_descr __initconst armada_370_gating_descr[] = {
- { "audio", NULL, 0 },
- { "pex0_en", NULL, 1 },
- { "pex1_en", NULL, 2 },
- { "ge1", NULL, 3 },
- { "ge0", NULL, 4 },
- { "pex0", NULL, 5 },
- { "pex1", NULL, 9 },
- { "sata0", NULL, 15 },
- { "sdio", NULL, 17 },
- { "tdm", NULL, 25 },
- { "ddr", NULL, 28 },
- { "sata1", NULL, 30 },
- { }
-};
-#endif
-
-#ifdef CONFIG_MACH_ARMADA_XP
-static const struct mvebu_soc_descr __initconst armada_xp_gating_descr[] = {
- { "audio", NULL, 0 },
- { "ge3", NULL, 1 },
- { "ge2", NULL, 2 },
- { "ge1", NULL, 3 },
- { "ge0", NULL, 4 },
- { "pex0", NULL, 5 },
- { "pex1", NULL, 6 },
- { "pex2", NULL, 7 },
- { "pex3", NULL, 8 },
- { "bp", NULL, 13 },
- { "sata0lnk", NULL, 14 },
- { "sata0", "sata0lnk", 15 },
- { "lcd", NULL, 16 },
- { "sdio", NULL, 17 },
- { "usb0", NULL, 18 },
- { "usb1", NULL, 19 },
- { "usb2", NULL, 20 },
- { "xor0", NULL, 22 },
- { "crypto", NULL, 23 },
- { "tdm", NULL, 25 },
- { "xor1", NULL, 28 },
- { "sata1lnk", NULL, 29 },
- { "sata1", "sata1lnk", 30 },
- { }
-};
-#endif
-
-#ifdef CONFIG_ARCH_DOVE
-static const struct mvebu_soc_descr __initconst dove_gating_descr[] = {
- { "usb0", NULL, 0 },
- { "usb1", NULL, 1 },
- { "ge", "gephy", 2 },
- { "sata", NULL, 3 },
- { "pex0", NULL, 4 },
- { "pex1", NULL, 5 },
- { "sdio0", NULL, 8 },
- { "sdio1", NULL, 9 },
- { "nand", NULL, 10 },
- { "camera", NULL, 11 },
- { "i2s0", NULL, 12 },
- { "i2s1", NULL, 13 },
- { "crypto", NULL, 15 },
- { "ac97", NULL, 21 },
- { "pdma", NULL, 22 },
- { "xor0", NULL, 23 },
- { "xor1", NULL, 24 },
- { "gephy", NULL, 30 },
- { }
-};
-#endif
-
-#ifdef CONFIG_ARCH_KIRKWOOD
-static const struct mvebu_soc_descr __initconst kirkwood_gating_descr[] = {
- { "ge0", NULL, 0 },
- { "pex0", NULL, 2 },
- { "usb0", NULL, 3 },
- { "sdio", NULL, 4 },
- { "tsu", NULL, 5 },
- { "runit", NULL, 7 },
- { "xor0", NULL, 8 },
- { "audio", NULL, 9 },
- { "powersave", "cpuclk", 11 },
- { "sata0", NULL, 14 },
- { "sata1", NULL, 15 },
- { "xor1", NULL, 16 },
- { "crypto", NULL, 17 },
- { "pex1", NULL, 18 },
- { "ge1", NULL, 19 },
- { "tdm", NULL, 20 },
- { }
-};
-#endif
-
-static const __initdata struct of_device_id clk_gating_match[] = {
-#ifdef CONFIG_MACH_ARMADA_370
- {
- .compatible = "marvell,armada-370-gating-clock",
- .data = armada_370_gating_descr,
- },
-#endif
-
-#ifdef CONFIG_MACH_ARMADA_XP
- {
- .compatible = "marvell,armada-xp-gating-clock",
- .data = armada_xp_gating_descr,
- },
-#endif
-
-#ifdef CONFIG_ARCH_DOVE
- {
- .compatible = "marvell,dove-gating-clock",
- .data = dove_gating_descr,
- },
-#endif
-
-#ifdef CONFIG_ARCH_KIRKWOOD
- {
- .compatible = "marvell,kirkwood-gating-clock",
- .data = kirkwood_gating_descr,
- },
-#endif
-
- { }
-};
-
-void __init mvebu_gating_clk_init(void)
-{
- struct device_node *np;
-
- for_each_matching_node(np, clk_gating_match) {
- const struct of_device_id *match =
- of_match_node(clk_gating_match, np);
- mvebu_clk_gating_setup(np,
- (const struct mvebu_soc_descr *)match->data);
- }
-}
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