diff options
Diffstat (limited to 'arch/arm/plat-omap/include/plat/omap_hwmod.h')
| -rw-r--r-- | arch/arm/plat-omap/include/plat/omap_hwmod.h | 73 |
1 files changed, 53 insertions, 20 deletions
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 7eaa8edf3b14..6864a997f2ca 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -23,7 +23,7 @@ * - add pinmuxing * - init_conn_id_bit (CONNID_BIT_VECTOR) * - implement default hwmod SMS/SDRC flags? - * - remove unused fields + * - move Linux-specific data ("non-ROM data") out * */ #ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H @@ -32,8 +32,9 @@ #include <linux/kernel.h> #include <linux/list.h> #include <linux/ioport.h> -#include <linux/mutex.h> +#include <linux/spinlock.h> #include <plat/cpu.h> +#include <plat/voltage.h> struct omap_device; @@ -76,6 +77,20 @@ extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2; #define HWMOD_IDLEMODE_FORCE (1 << 0) #define HWMOD_IDLEMODE_NO (1 << 1) #define HWMOD_IDLEMODE_SMART (1 << 2) +/* Slave idle mode flag only */ +#define HWMOD_IDLEMODE_SMART_WKUP (1 << 3) + +/** + * struct omap_hwmod_mux_info - hwmod specific mux configuration + * @pads: array of omap_device_pad entries + * @nr_pads: number of omap_device_pad entries + * + * Note that this is currently built during init as needed. + */ +struct omap_hwmod_mux_info { + int nr_pads; + struct omap_device_pad *pads; +}; /** * struct omap_hwmod_irq_info - MPU IRQs used by the hwmod @@ -159,7 +174,7 @@ struct omap_hwmod_omap2_firewall { * ADDR_MAP_ON_INIT: Map this address space during omap_hwmod init. * ADDR_TYPE_RT: Address space contains module register target data. */ -#define ADDR_MAP_ON_INIT (1 << 0) +#define ADDR_MAP_ON_INIT (1 << 0) /* XXX does not belong */ #define ADDR_TYPE_RT (1 << 1) /** @@ -200,8 +215,6 @@ struct omap_hwmod_addr_space { * @fw: interface firewall data * @addr_cnt: ARRAY_SIZE(@addr) * @width: OCP data width - * @thread_cnt: number of threads - * @max_burst_len: maximum burst length in @width sized words (0 if unlimited) * @user: initiators using this interface (see OCP_USER_* macros above) * @flags: OCP interface flags (see OCPIF_* macros above) * @@ -221,8 +234,6 @@ struct omap_hwmod_ocp_if { } fw; u8 addr_cnt; u8 width; - u8 thread_cnt; - u8 max_burst_len; u8 user; u8 flags; }; @@ -231,11 +242,12 @@ struct omap_hwmod_ocp_if { /* Macros for use in struct omap_hwmod_sysconfig */ /* Flags for use in omap_hwmod_sysconfig.idlemodes */ -#define MASTER_STANDBY_SHIFT 2 +#define MASTER_STANDBY_SHIFT 4 #define SLAVE_IDLE_SHIFT 0 #define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT) #define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT) #define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT) +#define SIDLE_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << SLAVE_IDLE_SHIFT) #define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT) #define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT) #define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT) @@ -357,14 +369,14 @@ struct omap_hwmod_omap4_prcm { * HWMOD_SWSUP_MSTDBY: omap_hwmod code should manually bring module in and out * of standby, rather than relying on module smart-standby * HWMOD_INIT_NO_RESET: don't reset this module at boot - important for - * SDRAM controller, etc. + * SDRAM controller, etc. XXX probably belongs outside the main hwmod file * HWMOD_INIT_NO_IDLE: don't idle this module at boot - important for SDRAM - * controller, etc. + * controller, etc. XXX probably belongs outside the main hwmod file * HWMOD_NO_AUTOIDLE: disable module autoidle (OCP_SYSCONFIG.AUTOIDLE) * when module is enabled, rather than the default, which is to * enable autoidle * HWMOD_SET_DEFAULT_CLOCKACT: program CLOCKACTIVITY bits at startup - * HWMOD_NO_IDLEST : this module does not have idle status - this is the case + * HWMOD_NO_IDLEST: this module does not have idle status - this is the case * only for few initiator modules on OMAP2 & 3. * HWMOD_CONTROL_OPT_CLKS_IN_RESET: Enable all optional clocks during reset. * This is needed for devices like DSS that require optional clocks enabled @@ -415,14 +427,31 @@ struct omap_hwmod_omap4_prcm { * @name: name of the hwmod_class * @sysc: device SYSCONFIG/SYSSTATUS register data * @rev: revision of the IP class + * @pre_shutdown: ptr to fn to be executed immediately prior to device shutdown + * @reset: ptr to fn to be executed in place of the standard hwmod reset fn * * Represent the class of a OMAP hardware "modules" (e.g. timer, * smartreflex, gpio, uart...) + * + * @pre_shutdown is a function that will be run immediately before + * hwmod clocks are disabled, etc. It is intended for use for hwmods + * like the MPU watchdog, which cannot be disabled with the standard + * omap_hwmod_shutdown(). The function should return 0 upon success, + * or some negative error upon failure. Returning an error will cause + * omap_hwmod_shutdown() to abort the device shutdown and return an + * error. + * + * If @reset is defined, then the function it points to will be + * executed in place of the standard hwmod _reset() code in + * mach-omap2/omap_hwmod.c. This is needed for IP blocks which have + * unusual reset sequences - usually processor IP blocks like the IVA. */ struct omap_hwmod_class { const char *name; struct omap_hwmod_class_sysconfig *sysc; u32 rev; + int (*pre_shutdown)(struct omap_hwmod *oh); + int (*reset)(struct omap_hwmod *oh); }; /** @@ -436,14 +465,14 @@ struct omap_hwmod_class { * @main_clk: main clock: OMAP clock name * @_clk: pointer to the main struct clk (filled in at runtime) * @opt_clks: other device clocks that drivers can request (0..*) + * @vdd_name: voltage domain name + * @voltdm: pointer to voltage domain (filled in at runtime) * @masters: ptr to array of OCP ifs that this hwmod can initiate on * @slaves: ptr to array of OCP ifs that this hwmod can respond on * @dev_attr: arbitrary device attributes that can be passed to the driver * @_sysc_cache: internal-use hwmod flags * @_mpu_rt_va: cached register target start address (internal use) * @_mpu_port_index: cached MPU register target slave ID (internal use) - * @msuspendmux_reg_id: CONTROL_MSUSPENDMUX register ID (1-6) - * @msuspendmux_shift: CONTROL_MSUSPENDMUX register bit shift * @mpu_irqs_cnt: number of @mpu_irqs * @sdma_reqs_cnt: number of @sdma_reqs * @opt_clks_cnt: number of @opt_clks @@ -452,9 +481,10 @@ struct omap_hwmod_class { * @response_lat: device OCP response latency (in interface clock cycles) * @_int_flags: internal-use hwmod flags * @_state: internal-use hwmod state + * @_postsetup_state: internal-use state to leave the hwmod in after _setup() * @flags: hwmod flags (documented below) * @omap_chip: OMAP chips this hwmod is present on - * @_mutex: mutex serializing operations on this hwmod + * @_lock: spinlock serializing operations on this hwmod * @node: list node for hwmod list (internal use) * * @main_clk refers to this module's "main clock," which for our @@ -469,6 +499,7 @@ struct omap_hwmod { const char *name; struct omap_hwmod_class *class; struct omap_device *od; + struct omap_hwmod_mux_info *mux; struct omap_hwmod_irq_info *mpu_irqs; struct omap_hwmod_dma_info *sdma_reqs; struct omap_hwmod_rst_info *rst_lines; @@ -479,17 +510,17 @@ struct omap_hwmod { const char *main_clk; struct clk *_clk; struct omap_hwmod_opt_clk *opt_clks; + char *vdd_name; + struct voltagedomain *voltdm; struct omap_hwmod_ocp_if **masters; /* connect to *_IA */ struct omap_hwmod_ocp_if **slaves; /* connect to *_TA */ void *dev_attr; u32 _sysc_cache; void __iomem *_mpu_rt_va; - struct mutex _mutex; + spinlock_t _lock; struct list_head node; u16 flags; u8 _mpu_port_index; - u8 msuspendmux_reg_id; - u8 msuspendmux_shift; u8 response_lat; u8 mpu_irqs_cnt; u8 sdma_reqs_cnt; @@ -500,16 +531,15 @@ struct omap_hwmod { u8 hwmods_cnt; u8 _int_flags; u8 _state; + u8 _postsetup_state; const struct omap_chip_id omap_chip; }; int omap_hwmod_init(struct omap_hwmod **ohs); -int omap_hwmod_register(struct omap_hwmod *oh); -int omap_hwmod_unregister(struct omap_hwmod *oh); struct omap_hwmod *omap_hwmod_lookup(const char *name); int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data), void *data); -int omap_hwmod_late_init(u8 skip_setup_idle); +int omap_hwmod_late_init(void); int omap_hwmod_enable(struct omap_hwmod *oh); int _omap_hwmod_enable(struct omap_hwmod *oh); @@ -556,6 +586,9 @@ int omap_hwmod_for_each_by_class(const char *classname, void *user), void *user); +int omap_hwmod_set_postsetup_state(struct omap_hwmod *oh, u8 state); +u32 omap_hwmod_get_context_loss_count(struct omap_hwmod *oh); + /* * Chip variant-specific hwmod init routines - XXX should be converted * to use initcalls once the initial boot ordering is straightened out |