add OMAP2/3 common powerdomains

Add powerdomains common to both OMAP2 and OMAP3 (WKUP and GFX/SGX).
Modify mach-omap2/io.c to initialize the powerdomain code on boot.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 8acdd04e868cc5a890494abaaca2aa65743d71e6..1314cc357b065fc4fdb17dd7d42e9c4886dbd3d6 100644 (file)
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -27,6 +27,10 @@
 #include <asm/arch/mux.h>
 #include <asm/arch/omapfb.h>
 
+#include <asm/arch/powerdomain.h>
+
+#include "powerdomains.h"
+
 extern void omap_sram_init(void);
 extern int omap2_clk_init(void);
 extern void omap2_check_revision(void);
@@ -188,6 +192,7 @@ void __init omap2_map_common_io(void)
 void __init omap2_init_common_hw(void)
 {
        omap2_mux_init();
+       pwrdm_init(powerdomains_omap);
        omap2_clk_init();
        omap2_init_memory();
        gpmc_init();

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index a7faba3d91823f7e1f0f8a0d87be9ce572fa6b78..b8a13c673af9149ac18293b25a58443ec48e6f2e 100644 (file)
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -651,7 +651,7 @@ static void __init prcm_setup_regs(void)
        __raw_writel(OMAP24XX_AUTOIDLE, OMAP24XX_PRCM_SYSCONFIG);
 
        /* Set all domain wakeup dependencies */
-       prm_write_mod_reg(OMAP_EN_WKUP, MPU_MOD, PM_WKDEP);
+       prm_write_mod_reg(OMAP_EN_WKUP_MASK, MPU_MOD, PM_WKDEP);
        prm_write_mod_reg(0, OMAP24XX_DSP_MOD, PM_WKDEP);
        prm_write_mod_reg(0, GFX_MOD, PM_WKDEP);
        prm_write_mod_reg(0, CORE_MOD, PM_WKDEP);

diff --git a/arch/arm/mach-omap2/powerdomains.h b/arch/arm/mach-omap2/powerdomains.h
new file mode 100644 (file)
index 0000000..56c2a8f
--- /dev/null
+++ b/arch/arm/mach-omap2/powerdomains.h
@@ -0,0 +1,147 @@
+/*
+ * OMAP2/3 common powerdomain definitions
+ *
+ * Copyright (C) 2007-8 Texas Instruments, Inc.
+ * Copyright (C) 2007-8 Nokia Corporation
+ *
+ * Written by Paul Walmsley
+ * Debugging and integration fixes by Jouni Högander
+ *
+ * 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.
+ */
+
+#ifndef ARCH_ARM_MACH_OMAP2_POWERDOMAINS
+#define ARCH_ARM_MACH_OMAP2_POWERDOMAINS
+
+/*
+ * This file contains all of the powerdomains that have some element
+ * of software control for the OMAP24xx and OMAP34XX chips.
+ *
+ * A few notes:
+ *
+ * This is not an exhaustive listing of powerdomains on the chips; only
+ * powerdomains that can be controlled in software.
+ *
+ * A useful validation rule for struct powerdomain:
+ * Any powerdomain referenced by a wkdep_srcs or sleepdep_srcs array
+ * must have a dep_bit assigned.  So wkdep_srcs/sleepdep_srcs are really
+ * just software-controllable dependencies.  Non-software-controllable
+ * dependencies do exist, but they are not encoded below (yet).
+ *
+ * 24xx does not support programmable sleep dependencies (SLEEPDEP)
+ *
+ */
+
+/*
+ * The names for the DSP/IVA2 powerdomains are confusing.
+ *
+ * Most OMAP chips have an on-board DSP.
+ *
+ * On the 2420, this is a 'C55 DSP called, simply, the DSP.  Its
+ * powerdomain is called the "DSP power domain."  On the 2430, the
+ * on-board DSP is a 'C64 DSP, now called the IVA2 or IVA2.1.  Its
+ * powerdomain is still called the "DSP power domain." On the 3430,
+ * the DSP is a 'C64 DSP like the 2430, also known as the IVA2; but
+ * its powerdomain is now called the "IVA2 power domain."
+ *
+ * The 2420 also has something called the IVA, which is a separate ARM
+ * core, and has nothing to do with the DSP/IVA2.
+ *
+ * Ideally the DSP/IVA2 could just be the same powerdomain, but the PRCM
+ * address offset is different between the C55 and C64 DSPs.
+ *
+ * The overly-specific dep_bit names are due to a bit name collision
+ * with CM_FCLKEN_{DSP,IVA2}.  The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift
+ * value are the same for all powerdomains: 2
+ */
+
+/*
+ * XXX should dep_bit be a mask, so we can test to see if it is 0 as a
+ * sanity check?
+ * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE
+ */
+
+#include <asm/arch/powerdomain.h>
+
+#include "prcm-common.h"
+#include "prm.h"
+#include "cm.h"
+
+/* OMAP2/3-common powerdomains and wakeup dependencies */
+
+/*
+ * 2420/2430 PM_WKDEP_GFX: CORE, MPU, WKUP
+ * 3430ES1 PM_WKDEP_GFX: adds IVA2, removes CORE
+ * 3430ES2 PM_WKDEP_SGX: adds IVA2, removes CORE
+ */
+static struct pwrdm_dep gfx_sgx_wkdeps[] = {
+       {
+               .pwrdm_name = "core_pwrdm",
+               .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX)
+       },
+       {
+               .pwrdm_name = "iva2_pwrdm",
+               .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
+       },
+       {
+               .pwrdm_name = "mpu_pwrdm",
+               .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX |
+                                           CHIP_IS_OMAP3430)
+       },
+       {
+               .pwrdm_name = "wkup_pwrdm",
+               .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX |
+                                           CHIP_IS_OMAP3430)
+       },
+       { NULL },
+};
+
+/*
+ * OMAP2/3 common powerdomains
+ */
+
+/* XXX add sleepdeps for this powerdomain : 3430 */
+
+/*
+ * The GFX powerdomain is not present on 3430ES2, but currently we do not
+ * have a macro to filter it out at compile-time.
+ */
+static struct powerdomain gfx_pwrdm = {
+       .name             = "gfx_pwrdm",
+       .prcm_offs        = GFX_MOD,
+       .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX |
+                                          CHIP_IS_OMAP3430ES1),
+       .wkdep_srcs       = gfx_sgx_wkdeps,
+       .pwrsts           = PWRSTS_OFF_RET_ON,
+       .pwrsts_logic_ret = PWRDM_POWER_RET,
+       .banks            = 1,
+       .pwrsts_mem_ret   = {
+               [0] = PWRDM_POWER_RET, /* MEMRETSTATE */
+       },
+       .pwrsts_mem_on    = {
+               [0] = PWRDM_POWER_ON,  /* MEMONSTATE */
+       },
+};
+
+static struct powerdomain wkup_pwrdm = {
+       .name           = "wkup_pwrdm",
+       .prcm_offs      = WKUP_MOD,
+       .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX | CHIP_IS_OMAP3430),
+       .dep_bit        = OMAP_EN_WKUP_SHIFT,
+};
+
+
+
+/* As powerdomains are added or removed above, this list must also be changed */
+static struct powerdomain *powerdomains_omap[] __initdata = {
+
+       &gfx_pwrdm,
+       &wkup_pwrdm,
+
+       NULL
+};
+
+
+#endif

diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h
index 125d1e241316c08c63edb77ae3037da54fd1e7b1..a00f28fe60db4e29d099a1b316eb8759223a06df 100644 (file)
--- a/arch/arm/mach-omap2/prm.h
+++ b/arch/arm/mach-omap2/prm.h
@@ -323,7 +323,8 @@ static __inline__ u32 __attribute__((unused)) prm_read_mod_reg(s16 module,
  * 3430: PM_WKDEP_IVA2, PM_WKDEP_GFX, PM_WKDEP_DSS, PM_WKDEP_CAM,
  *      PM_WKDEP_PER
  */
-#define OMAP_EN_WKUP                                   (1 << 4)
+#define OMAP_EN_WKUP_SHIFT                             4
+#define OMAP_EN_WKUP_MASK                              (1 << 4)
 
 /*
  * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,