diff options
Diffstat (limited to 'arch/arm/plat-omap')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 14 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/omap_hwmod.h | 44 | ||||
| -rw-r--r-- | arch/arm/plat-omap/sram.c | 12 |
3 files changed, 53 insertions, 17 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index 612227efe34f..987e6101267d 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -925,6 +925,13 @@ void omap_start_dma(int lch) l |= OMAP_DMA_CCR_BUFFERING_DISABLE; l |= OMAP_DMA_CCR_EN; + /* + * As dma_write() uses IO accessors which are weakly ordered, there + * is no guarantee that data in coherent DMA memory will be visible + * to the DMA device. Add a memory barrier here to ensure that any + * such data is visible prior to enabling DMA. + */ + mb(); p->dma_write(l, CCR, lch); dma_chan[lch].flags |= OMAP_DMA_ACTIVE; @@ -974,6 +981,13 @@ void omap_stop_dma(int lch) p->dma_write(l, CCR, lch); } + /* + * Ensure that data transferred by DMA is visible to any access + * after DMA has been disabled. This is important for coherent + * DMA regions. + */ + mb(); + if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) { int next_lch, cur_lch = lch; char dma_chan_link_map[MAX_LOGICAL_DMA_CH_COUNT]; diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 8070145ccb98..14dde32cd406 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -213,11 +213,16 @@ struct omap_hwmod_addr_space { */ #define OCP_USER_MPU (1 << 0) #define OCP_USER_SDMA (1 << 1) +#define OCP_USER_DSP (1 << 2) /* omap_hwmod_ocp_if.flags bits */ #define OCPIF_SWSUP_IDLE (1 << 0) #define OCPIF_CAN_BURST (1 << 1) +/* omap_hwmod_ocp_if._int_flags possibilities */ +#define _OCPIF_INT_FLAGS_REGISTERED (1 << 0) + + /** * struct omap_hwmod_ocp_if - OCP interface data * @master: struct omap_hwmod that initiates OCP transactions on this link @@ -229,6 +234,7 @@ struct omap_hwmod_addr_space { * @width: OCP data width * @user: initiators using this interface (see OCP_USER_* macros above) * @flags: OCP interface flags (see OCPIF_* macros above) + * @_int_flags: internal flags (see _OCPIF_INT_FLAGS* macros above) * * It may also be useful to add a tag_cnt field for OCP2.x devices. * @@ -247,6 +253,7 @@ struct omap_hwmod_ocp_if { u8 width; u8 user; u8 flags; + u8 _int_flags; }; @@ -305,6 +312,7 @@ struct omap_hwmod_sysc_fields { * @rev_offs: IP block revision register offset (from module base addr) * @sysc_offs: OCP_SYSCONFIG register offset (from module base addr) * @syss_offs: OCP_SYSSTATUS register offset (from module base addr) + * @srst_udelay: Delay needed after doing a softreset in usecs * @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART} * @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported * @clockact: the default value of the module CLOCKACTIVITY bits @@ -326,13 +334,14 @@ struct omap_hwmod_sysc_fields { * then this field has to be populated with the correct offset structure. */ struct omap_hwmod_class_sysconfig { - u16 rev_offs; - u16 sysc_offs; - u16 syss_offs; + u32 rev_offs; + u32 sysc_offs; + u32 syss_offs; u16 sysc_flags; + struct omap_hwmod_sysc_fields *sysc_fields; + u8 srst_udelay; u8 idlemodes; u8 clockact; - struct omap_hwmod_sysc_fields *sysc_fields; }; /** @@ -474,6 +483,16 @@ struct omap_hwmod_class { }; /** + * struct omap_hwmod_link - internal structure linking hwmods with ocp_ifs + * @ocp_if: OCP interface structure record pointer + * @node: list_head pointing to next struct omap_hwmod_link in a list + */ +struct omap_hwmod_link { + struct omap_hwmod_ocp_if *ocp_if; + struct list_head node; +}; + +/** * struct omap_hwmod - integration data for OMAP hardware "modules" (IP blocks) * @name: name of the hwmod * @class: struct omap_hwmod_class * to the class of this hwmod @@ -485,12 +504,10 @@ struct omap_hwmod_class { * @_clk: pointer to the main struct clk (filled in at runtime) * @opt_clks: other device clocks that drivers can request (0..*) * @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) + * @_mpu_port: cached MPU register target slave (internal use) * @opt_clks_cnt: number of @opt_clks * @master_cnt: number of @master entries * @slaves_cnt: number of @slave entries @@ -509,6 +526,8 @@ struct omap_hwmod_class { * * Parameter names beginning with an underscore are managed internally by * the omap_hwmod code and should not be set during initialization. + * + * @masters and @slaves are now deprecated. */ struct omap_hwmod { const char *name; @@ -527,15 +546,15 @@ struct omap_hwmod { struct omap_hwmod_opt_clk *opt_clks; char *clkdm_name; struct clockdomain *clkdm; - struct omap_hwmod_ocp_if **masters; /* connect to *_IA */ - struct omap_hwmod_ocp_if **slaves; /* connect to *_TA */ + struct list_head master_ports; /* connect to *_IA */ + struct list_head slave_ports; /* connect to *_TA */ void *dev_attr; u32 _sysc_cache; void __iomem *_mpu_rt_va; spinlock_t _lock; struct list_head node; + struct omap_hwmod_ocp_if *_mpu_port; u16 flags; - u8 _mpu_port_index; u8 response_lat; u8 rst_lines_cnt; u8 opt_clks_cnt; @@ -547,7 +566,6 @@ struct omap_hwmod { u8 _postsetup_state; }; -int omap_hwmod_register(struct omap_hwmod **ohs); struct omap_hwmod *omap_hwmod_lookup(const char *name); int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data), void *data); @@ -579,6 +597,8 @@ int omap_hwmod_softreset(struct omap_hwmod *oh); int omap_hwmod_count_resources(struct omap_hwmod *oh); int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res); +int omap_hwmod_get_resource_byname(struct omap_hwmod *oh, unsigned int type, + const char *name, struct resource *res); struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh); void __iomem *omap_hwmod_get_mpu_rt_va(struct omap_hwmod *oh); @@ -617,4 +637,6 @@ extern int omap2430_hwmod_init(void); extern int omap3xxx_hwmod_init(void); extern int omap44xx_hwmod_init(void); +extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois); + #endif diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c index 6beb79cccc8f..477363c163ec 100644 --- a/arch/arm/plat-omap/sram.c +++ b/arch/arm/plat-omap/sram.c @@ -348,7 +348,6 @@ u32 omap3_configure_core_dpll(u32 m2, u32 unlock_dll, u32 f, u32 inc, sdrc_actim_ctrl_b_1, sdrc_mr_1); } -#ifdef CONFIG_PM void omap3_sram_restore_context(void) { omap_sram_ceil = omap_sram_base + omap_sram_size; @@ -358,17 +357,18 @@ void omap3_sram_restore_context(void) omap3_sram_configure_core_dpll_sz); omap_push_sram_idle(); } -#endif /* CONFIG_PM */ - -#endif /* CONFIG_ARCH_OMAP3 */ static inline int omap34xx_sram_init(void) { -#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) omap3_sram_restore_context(); -#endif return 0; } +#else +static inline int omap34xx_sram_init(void) +{ + return 0; +} +#endif /* CONFIG_ARCH_OMAP3 */ static inline int am33xx_sram_init(void) { |