OMAP: clockdomain code/data: remove omap_chip bitmask from struct clockdomain

At Tony's request, remove the omap_chip bitmasks from the clockdomain
and clockdomain dependency definitions.  Instead, initialize
clockdomains based on one or more lists that are applicable to a
particular SoC family, variant, and silicon revision.

Tony Lindgren <tony@atomide.com> found a bug in a previous version of this
patch - thanks Tony.

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

1 files changed, 398 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/clockdomains3xxx_data.c b/arch/arm/mach-omap2/clockdomains3xxx_data.c
new file mode 100644
index 000000000000..b84e138d99c8
--- /dev/null
+++ b/arch/arm/mach-omap2/clockdomains3xxx_data.c
@@ -0,0 +1,398 @@
+/*
+ * OMAP3xxx clockdomains
+ *
+ * Copyright (C) 2008-2011 Texas Instruments, Inc.
+ * Copyright (C) 2008-2010 Nokia Corporation
+ *
+ * Paul Walmsley, Jouni Högander
+ *
+ * This file contains clockdomains and clockdomain wakeup/sleep
+ * dependencies for the OMAP3xxx chips.  Some notes:
+ *
+ * A useful validation rule for struct clockdomain: Any clockdomain
+ * 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).
+ *
+ * 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
+ */
+
+/*
+ * To-Do List
+ * -> Port the Sleep/Wakeup dependencies for the domains
+ *    from the Power domain framework
+ */
+
+#include <linux/kernel.h>
+#include <linux/io.h>
+
+#include "clockdomain.h"
+#include "prm2xxx_3xxx.h"
+#include "cm2xxx_3xxx.h"
+#include "cm-regbits-34xx.h"
+#include "prm-regbits-34xx.h"
+
+/*
+ * Clockdomain dependencies for wkdeps/sleepdeps
+ *
+ * XXX Hardware dependencies (e.g., dependencies that cannot be
+ * changed in software) are not included here yet, but should be.
+ */
+
+/* OMAP3-specific possible dependencies */
+
+/*
+ * 3430ES1 PM_WKDEP_GFX: adds IVA2, removes CORE
+ * 3430ES2 PM_WKDEP_SGX: adds IVA2, removes CORE
+ */
+static struct clkdm_dep gfx_sgx_3xxx_wkdeps[] = {
+        { .clkdm_name = "iva2_clkdm", },
+        { .clkdm_name = "mpu_clkdm", },
+        { .clkdm_name = "wkup_clkdm", },
+        { NULL },
+};
+
+/* 3430: PM_WKDEP_PER: CORE, IVA2, MPU, WKUP */
+static struct clkdm_dep per_wkdeps[] = {
+        { .clkdm_name = "core_l3_clkdm" },
+        { .clkdm_name = "core_l4_clkdm" },
+        { .clkdm_name = "iva2_clkdm" },
+        { .clkdm_name = "mpu_clkdm" },
+        { .clkdm_name = "wkup_clkdm" },
+        { NULL },
+};
+
+/* 3430ES2: PM_WKDEP_USBHOST: CORE, IVA2, MPU, WKUP */
+static struct clkdm_dep usbhost_wkdeps[] = {
+        { .clkdm_name = "core_l3_clkdm" },
+        { .clkdm_name = "core_l4_clkdm" },
+        { .clkdm_name = "iva2_clkdm" },
+        { .clkdm_name = "mpu_clkdm" },
+        { .clkdm_name = "wkup_clkdm" },
+        { NULL },
+};
+
+/* 3430 PM_WKDEP_MPU: CORE, IVA2, DSS, PER */
+static struct clkdm_dep mpu_3xxx_wkdeps[] = {
+        { .clkdm_name = "core_l3_clkdm" },
+        { .clkdm_name = "core_l4_clkdm" },
+        { .clkdm_name = "iva2_clkdm" },
+        { .clkdm_name = "dss_clkdm" },
+        { .clkdm_name = "per_clkdm" },
+        { NULL },
+};
+
+/* 3430 PM_WKDEP_IVA2: CORE, MPU, WKUP, DSS, PER */
+static struct clkdm_dep iva2_wkdeps[] = {
+        { .clkdm_name = "core_l3_clkdm" },
+        { .clkdm_name = "core_l4_clkdm" },
+        { .clkdm_name = "mpu_clkdm" },
+        { .clkdm_name = "wkup_clkdm" },
+        { .clkdm_name = "dss_clkdm" },
+        { .clkdm_name = "per_clkdm" },
+        { NULL },
+};
+
+/* 3430 PM_WKDEP_CAM: IVA2, MPU, WKUP */
+static struct clkdm_dep cam_wkdeps[] = {
+        { .clkdm_name = "iva2_clkdm" },
+        { .clkdm_name = "mpu_clkdm" },
+        { .clkdm_name = "wkup_clkdm" },
+        { NULL },
+};
+
+/* 3430 PM_WKDEP_DSS: IVA2, MPU, WKUP */
+static struct clkdm_dep dss_wkdeps[] = {
+        { .clkdm_name = "iva2_clkdm" },
+        { .clkdm_name = "mpu_clkdm" },
+        { .clkdm_name = "wkup_clkdm" },
+        { NULL },
+};
+
+/* 3430: PM_WKDEP_NEON: MPU */
+static struct clkdm_dep neon_wkdeps[] = {
+        { .clkdm_name = "mpu_clkdm" },
+        { NULL },
+};
+
+/* Sleep dependency source arrays for OMAP3-specific clkdms */
+
+/* 3430: CM_SLEEPDEP_DSS: MPU, IVA */
+static struct clkdm_dep dss_sleepdeps[] = {
+        { .clkdm_name = "mpu_clkdm" },
+        { .clkdm_name = "iva2_clkdm" },
+        { NULL },
+};
+
+/* 3430: CM_SLEEPDEP_PER: MPU, IVA */
+static struct clkdm_dep per_sleepdeps[] = {
+        { .clkdm_name = "mpu_clkdm" },
+        { .clkdm_name = "iva2_clkdm" },
+        { NULL },
+};
+
+/* 3430ES2: CM_SLEEPDEP_USBHOST: MPU, IVA */
+static struct clkdm_dep usbhost_sleepdeps[] = {
+        { .clkdm_name = "mpu_clkdm" },
+        { .clkdm_name = "iva2_clkdm" },
+        { NULL },
+};
+
+/* 3430: CM_SLEEPDEP_CAM: MPU */
+static struct clkdm_dep cam_sleepdeps[] = {
+        { .clkdm_name = "mpu_clkdm" },
+        { NULL },
+};
+
+/*
+ * 3430ES1: CM_SLEEPDEP_GFX: MPU
+ * 3430ES2: CM_SLEEPDEP_SGX: MPU
+ * These can share data since they will never be present simultaneously
+ * on the same device.
+ */
+static struct clkdm_dep gfx_sgx_sleepdeps[] = {
+        { .clkdm_name = "mpu_clkdm" },
+        { NULL },
+};
+
+/*
+ * OMAP3 clockdomains
+ */
+
+static struct clockdomain mpu_3xxx_clkdm = {
+        .name           = "mpu_clkdm",
+        .pwrdm          = { .name = "mpu_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP | CLKDM_CAN_FORCE_WAKEUP,
+        .dep_bit        = OMAP3430_EN_MPU_SHIFT,
+        .wkdep_srcs     = mpu_3xxx_wkdeps,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_MPU_MASK,
+};
+
+static struct clockdomain neon_clkdm = {
+        .name           = "neon_clkdm",
+        .pwrdm          = { .name = "neon_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .wkdep_srcs     = neon_wkdeps,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_NEON_MASK,
+};
+
+static struct clockdomain iva2_clkdm = {
+        .name           = "iva2_clkdm",
+        .pwrdm          = { .name = "iva2_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .dep_bit        = OMAP3430_PM_WKDEP_MPU_EN_IVA2_SHIFT,
+        .wkdep_srcs     = iva2_wkdeps,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_IVA2_MASK,
+};
+
+static struct clockdomain gfx_3430es1_clkdm = {
+        .name           = "gfx_clkdm",
+        .pwrdm          = { .name = "gfx_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .wkdep_srcs     = gfx_sgx_3xxx_wkdeps,
+        .sleepdep_srcs  = gfx_sgx_sleepdeps,
+        .clktrctrl_mask = OMAP3430ES1_CLKTRCTRL_GFX_MASK,
+};
+
+static struct clockdomain sgx_clkdm = {
+        .name           = "sgx_clkdm",
+        .pwrdm          = { .name = "sgx_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .wkdep_srcs     = gfx_sgx_3xxx_wkdeps,
+        .sleepdep_srcs  = gfx_sgx_sleepdeps,
+        .clktrctrl_mask = OMAP3430ES2_CLKTRCTRL_SGX_MASK,
+};
+
+/*
+ * The die-to-die clockdomain was documented in the 34xx ES1 TRM, but
+ * then that information was removed from the 34xx ES2+ TRM.  It is
+ * unclear whether the core is still there, but the clockdomain logic
+ * is there, and must be programmed to an appropriate state if the
+ * CORE clockdomain is to become inactive.
+ */
+static struct clockdomain d2d_clkdm = {
+        .name           = "d2d_clkdm",
+        .pwrdm          = { .name = "core_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .clktrctrl_mask = OMAP3430ES1_CLKTRCTRL_D2D_MASK,
+};
+
+/*
+ * XXX add usecounting for clkdm dependencies, otherwise the presence
+ * of a single dep bit for core_l3_3xxx_clkdm and core_l4_3xxx_clkdm
+ * could cause trouble
+ */
+static struct clockdomain core_l3_3xxx_clkdm = {
+        .name           = "core_l3_clkdm",
+        .pwrdm          = { .name = "core_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP,
+        .dep_bit        = OMAP3430_EN_CORE_SHIFT,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_L3_MASK,
+};
+
+/*
+ * XXX add usecounting for clkdm dependencies, otherwise the presence
+ * of a single dep bit for core_l3_3xxx_clkdm and core_l4_3xxx_clkdm
+ * could cause trouble
+ */
+static struct clockdomain core_l4_3xxx_clkdm = {
+        .name           = "core_l4_clkdm",
+        .pwrdm          = { .name = "core_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP,
+        .dep_bit        = OMAP3430_EN_CORE_SHIFT,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_L4_MASK,
+};
+
+/* Another case of bit name collisions between several registers: EN_DSS */
+static struct clockdomain dss_3xxx_clkdm = {
+        .name           = "dss_clkdm",
+        .pwrdm          = { .name = "dss_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .dep_bit        = OMAP3430_PM_WKDEP_MPU_EN_DSS_SHIFT,
+        .wkdep_srcs     = dss_wkdeps,
+        .sleepdep_srcs  = dss_sleepdeps,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_DSS_MASK,
+};
+
+static struct clockdomain cam_clkdm = {
+        .name           = "cam_clkdm",
+        .pwrdm          = { .name = "cam_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .wkdep_srcs     = cam_wkdeps,
+        .sleepdep_srcs  = cam_sleepdeps,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_CAM_MASK,
+};
+
+static struct clockdomain usbhost_clkdm = {
+        .name           = "usbhost_clkdm",
+        .pwrdm          = { .name = "usbhost_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .wkdep_srcs     = usbhost_wkdeps,
+        .sleepdep_srcs  = usbhost_sleepdeps,
+        .clktrctrl_mask = OMAP3430ES2_CLKTRCTRL_USBHOST_MASK,
+};
+
+static struct clockdomain per_clkdm = {
+        .name           = "per_clkdm",
+        .pwrdm          = { .name = "per_pwrdm" },
+        .flags          = CLKDM_CAN_HWSUP_SWSUP,
+        .dep_bit        = OMAP3430_EN_PER_SHIFT,
+        .wkdep_srcs     = per_wkdeps,
+        .sleepdep_srcs  = per_sleepdeps,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_PER_MASK,
+};
+
+/*
+ * Disable hw supervised mode for emu_clkdm, because emu_pwrdm is
+ * switched of even if sdti is in use
+ */
+static struct clockdomain emu_clkdm = {
+        .name           = "emu_clkdm",
+        .pwrdm          = { .name = "emu_pwrdm" },
+        .flags          = /* CLKDM_CAN_ENABLE_AUTO |  */CLKDM_CAN_SWSUP,
+        .clktrctrl_mask = OMAP3430_CLKTRCTRL_EMU_MASK,
+};
+
+static struct clockdomain dpll1_clkdm = {
+        .name           = "dpll1_clkdm",
+        .pwrdm          = { .name = "dpll1_pwrdm" },
+};
+
+static struct clockdomain dpll2_clkdm = {
+        .name           = "dpll2_clkdm",
+        .pwrdm          = { .name = "dpll2_pwrdm" },
+};
+
+static struct clockdomain dpll3_clkdm = {
+        .name           = "dpll3_clkdm",
+        .pwrdm          = { .name = "dpll3_pwrdm" },
+};
+
+static struct clockdomain dpll4_clkdm = {
+        .name           = "dpll4_clkdm",
+        .pwrdm          = { .name = "dpll4_pwrdm" },
+};
+
+static struct clockdomain dpll5_clkdm = {
+        .name           = "dpll5_clkdm",
+        .pwrdm          = { .name = "dpll5_pwrdm" },
+};
+
+/*
+ * Clockdomain hwsup dependencies
+ */
+
+static struct clkdm_autodep clkdm_autodeps[] = {
+        {
+                .clkdm = { .name = "mpu_clkdm" },
+        },
+        {
+                .clkdm = { .name = "iva2_clkdm" },
+        },
+        {
+                .clkdm = { .name = NULL },
+        }
+};
+
+/*
+ *
+ */
+
+static struct clockdomain *clockdomains_omap3430_common[] __initdata = {
+        &wkup_common_clkdm,
+        &cm_common_clkdm,
+        &prm_common_clkdm,
+        &mpu_3xxx_clkdm,
+        &neon_clkdm,
+        &iva2_clkdm,
+        &d2d_clkdm,
+        &core_l3_3xxx_clkdm,
+        &core_l4_3xxx_clkdm,
+        &dss_3xxx_clkdm,
+        &cam_clkdm,
+        &per_clkdm,
+        &emu_clkdm,
+        &dpll1_clkdm,
+        &dpll2_clkdm,
+        &dpll3_clkdm,
+        &dpll4_clkdm,
+        NULL
+};
+
+static struct clockdomain *clockdomains_omap3430es1[] __initdata = {
+        &gfx_3430es1_clkdm,
+        NULL,
+};
+
+static struct clockdomain *clockdomains_omap3430es2plus[] __initdata = {
+        &sgx_clkdm,
+        &dpll5_clkdm,
+        &usbhost_clkdm,
+        NULL,
+};
+
+void __init omap3xxx_clockdomains_init(void)
+{
+        struct clockdomain **sc;
+
+        if (!cpu_is_omap34xx())
+                return;
+
+        clkdm_register_platform_funcs(&omap3_clkdm_operations);
+        clkdm_register_clkdms(clockdomains_omap3430_common);
+
+        sc = (omap_rev() == OMAP3430_REV_ES1_0) ? clockdomains_omap3430es1 :
+                clockdomains_omap3430es2plus;
+
+        clkdm_register_clkdms(sc);
+
+        clkdm_register_autodeps(clkdm_autodeps);
+        clkdm_complete_init();
+}