diff options
| -rw-r--r-- | arch/arm/mach-omap2/mux.c | 65 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/mux.h | 40 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/omap_hwmod.h | 13 |
3 files changed, 118 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c index 0fa3d74125bc..27eb51a224cb 100644 --- a/arch/arm/mach-omap2/mux.c +++ b/arch/arm/mach-omap2/mux.c @@ -35,6 +35,8 @@ #include <asm/system.h> +#include <plat/omap_hwmod.h> + #include "control.h" #include "mux.h" @@ -252,6 +254,69 @@ int __init omap_mux_init_signal(const char *muxname, int val) return 0; } +struct omap_hwmod_mux_info * __init +omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads) +{ + struct omap_hwmod_mux_info *hmux; + int i; + + if (!bpads || nr_pads < 1) + return NULL; + + hmux = kzalloc(sizeof(struct omap_hwmod_mux_info), GFP_KERNEL); + if (!hmux) + goto err1; + + hmux->nr_pads = nr_pads; + + hmux->pads = kzalloc(sizeof(struct omap_device_pad) * + nr_pads, GFP_KERNEL); + if (!hmux->pads) + goto err2; + + for (i = 0; i < hmux->nr_pads; i++) { + struct omap_mux_partition *partition; + struct omap_device_pad *bpad = &bpads[i], *pad = &hmux->pads[i]; + struct omap_mux *mux; + int mux_mode; + + mux_mode = omap_mux_get_by_name(bpad->name, &partition, &mux); + if (mux_mode < 0) + goto err3; + if (!pad->partition) + pad->partition = partition; + if (!pad->mux) + pad->mux = mux; + + pad->name = kzalloc(strlen(bpad->name) + 1, GFP_KERNEL); + if (!pad->name) { + int j; + + for (j = i - 1; j >= 0; j--) + kfree(hmux->pads[j].name); + goto err3; + } + strcpy(pad->name, bpad->name); + + pad->flags = bpad->flags; + pad->enable = bpad->enable; + pad->idle = bpad->idle; + pad->off = bpad->off; + pr_debug("%s: Initialized %s\n", __func__, pad->name); + } + + return hmux; + +err3: + kfree(hmux->pads); +err2: + kfree(hmux); +err1: + pr_err("%s: Could not allocate device mux entry\n", __func__); + + return NULL; +} + #ifdef CONFIG_DEBUG_FS #define OMAP_MUX_MAX_NR_FLAGS 10 diff --git a/arch/arm/mach-omap2/mux.h b/arch/arm/mach-omap2/mux.h index f5f7f4938057..9c48b9d3ec29 100644 --- a/arch/arm/mach-omap2/mux.h +++ b/arch/arm/mach-omap2/mux.h @@ -145,6 +145,32 @@ struct omap_board_mux { u16 value; }; +#define OMAP_DEVICE_PAD_ENABLED BIT(7) /* Not needed for board-*.c */ +#define OMAP_DEVICE_PAD_REMUX BIT(1) /* Dynamically remux a pad, + needs enable, idle and off + values */ +#define OMAP_DEVICE_PAD_WAKEUP BIT(0) /* Pad is wake-up capable */ + +/** + * struct omap_device_pad - device specific pad configuration + * @name: signal name + * @flags: pad specific runtime flags + * @enable: runtime value for a pad + * @idle: idle value for a pad + * @off: off value for a pad, defaults to safe mode + * @partition: mux partition + * @mux: mux register + */ +struct omap_device_pad { + char *name; + u8 flags; + u16 enable; + u16 idle; + u16 off; + struct omap_mux_partition *partition; + struct omap_mux *mux; +}; + #if defined(CONFIG_OMAP_MUX) /** @@ -161,6 +187,14 @@ int omap_mux_init_gpio(int gpio, int val); */ int omap_mux_init_signal(const char *muxname, int val); +/** + * omap_hwmod_mux_init - initialize hwmod specific mux data + * @bpads: Board specific device signal names + * @nr_pads: Number of signal names for the device + */ +extern struct omap_hwmod_mux_info * +omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads); + #else static inline int omap_mux_init_gpio(int gpio, int val) @@ -172,6 +206,12 @@ static inline int omap_mux_init_signal(char *muxname, int val) return 0; } +static inline struct omap_hwmod_mux_info * +omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads) +{ + return NULL; +} + static struct omap_board_mux *board_mux __initdata __maybe_unused; #endif diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index b219a88cac2c..6864a997f2ca 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -81,6 +81,18 @@ extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2; #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 * @name: name of the IRQ channel (module local name) * @irq_ch: IRQ channel ID @@ -487,6 +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; |