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authorLinus Walleij <linus.walleij@linaro.org>2012-06-11 19:33:12 +0400
committerMike Turquette <mturquette@linaro.org>2012-07-12 04:58:45 +0400
commita613163dff04cbfcb7d66b06ef4a5f65498ee59b (patch)
tree51841b8f22c1eeb71068e2a71bb92c152e68a543 /arch/arm/mach-integrator/integrator_cp.c
parent91b87a4795c42b97b8d18c3757eff352458ecef4 (diff)
downloadlinux-a613163dff04cbfcb7d66b06ef4a5f65498ee59b.tar.xz
ARM: integrator: convert to common clock
This converts the Integrator platform to use common clock and the ICST driver. Since from this point not all ARM reference platforms use the clock, we define CONFIG_PLAT_VERSATILE_CLOCK and select it for all platforms except the Integrator. Open issue: I could not use the .init_early() field of the machine descriptor to initialize the clocks, but had to move them to .init_irq(), so presumably .init_early() is so early that common clock is not up, and .init_machine() is too late since it's needed for the clockevent/clocksource initialization. Any suggestions on how to solve this is very welcome. Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> [mturquette@linaro.org: use 'select' instead of versatile Kconfig] Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'arch/arm/mach-integrator/integrator_cp.c')
-rw-r--r--arch/arm/mach-integrator/integrator_cp.c63
1 files changed, 2 insertions, 61 deletions
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index a8c6480babdd..82d5c837cc74 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -21,8 +21,8 @@
#include <linux/amba/mmci.h>
#include <linux/io.h>
#include <linux/gfp.h>
-#include <linux/clkdev.h>
#include <linux/mtd/physmap.h>
+#include <linux/platform_data/clk-integrator.h>
#include <mach/hardware.h>
#include <mach/platform.h>
@@ -171,65 +171,10 @@ static void __init intcp_init_irq(void)
fpga_irq_init(INTCP_VA_SIC_BASE, "SIC", IRQ_SIC_START,
IRQ_CP_CPPLDINT, sic_mask, NULL);
+ integrator_clk_init(true);
}
/*
- * Clock handling
- */
-#define CM_LOCK (__io_address(INTEGRATOR_HDR_BASE)+INTEGRATOR_HDR_LOCK_OFFSET)
-#define CM_AUXOSC (__io_address(INTEGRATOR_HDR_BASE)+0x1c)
-
-static const struct icst_params cp_auxvco_params = {
- .ref = 24000000,
- .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 void cp_auxvco_set(struct clk *clk, struct icst_vco vco)
-{
- u32 val;
-
- val = readl(clk->vcoreg) & ~0x7ffff;
- val |= vco.v | (vco.r << 9) | (vco.s << 16);
-
- writel(0xa05f, CM_LOCK);
- writel(val, clk->vcoreg);
- writel(0, CM_LOCK);
-}
-
-static const struct clk_ops cp_auxclk_ops = {
- .round = icst_clk_round,
- .set = icst_clk_set,
- .setvco = cp_auxvco_set,
-};
-
-static struct clk cp_auxclk = {
- .ops = &cp_auxclk_ops,
- .params = &cp_auxvco_params,
- .vcoreg = CM_AUXOSC,
-};
-
-static struct clk sp804_clk = {
- .rate = 1000000,
-};
-
-static struct clk_lookup cp_lookups[] = {
- { /* CLCD */
- .dev_id = "clcd",
- .clk = &cp_auxclk,
- }, { /* SP804 timers */
- .dev_id = "sp804",
- .clk = &sp804_clk,
- },
-};
-
-/*
* Flash handling.
*/
static int intcp_flash_init(struct platform_device *dev)
@@ -406,10 +351,6 @@ static struct amba_device *amba_devs[] __initdata = {
static void __init intcp_init_early(void)
{
- clkdev_add_table(cp_lookups, ARRAY_SIZE(cp_lookups));
-
- integrator_init_early();
-
#ifdef CONFIG_PLAT_VERSATILE_SCHED_CLOCK
versatile_sched_clock_init(REFCOUNTER, 24000000);
#endif