diff options
Diffstat (limited to 'arch/arm/plat-omap')
| -rw-r--r-- | arch/arm/plat-omap/counter_32k.c | 2 | ||||
| -rw-r--r-- | arch/arm/plat-omap/dmtimer.c | 213 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/common.h | 6 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/dmtimer.h | 250 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/irqs.h | 6 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/mcbsp.h | 74 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/nand.h | 6 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/omap4-keypad.h | 3 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/uncompress.h | 1 | ||||
| -rw-r--r-- | arch/arm/plat-omap/iovmm.c | 6 | ||||
| -rw-r--r-- | arch/arm/plat-omap/mcbsp.c | 599 |
11 files changed, 312 insertions, 854 deletions
diff --git a/arch/arm/plat-omap/counter_32k.c b/arch/arm/plat-omap/counter_32k.c index f7fed6080190..c13bc3d3eb2c 100644 --- a/arch/arm/plat-omap/counter_32k.c +++ b/arch/arm/plat-omap/counter_32k.c @@ -126,7 +126,7 @@ static inline unsigned long long notrace _omap_32k_sched_clock(void) return cyc_to_fixed_sched_clock(&cd, cyc, (u32)~0, SC_MULT, SC_SHIFT); } -#ifndef CONFIG_OMAP_MPU_TIMER +#if defined(CONFIG_OMAP_32K_TIMER) && !defined(CONFIG_OMAP_MPU_TIMER) unsigned long long notrace sched_clock(void) { return _omap_32k_sched_clock(); diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c index ee9f6ebba29b..75a847dd776a 100644 --- a/arch/arm/plat-omap/dmtimer.c +++ b/arch/arm/plat-omap/dmtimer.c @@ -41,127 +41,6 @@ #include <plat/dmtimer.h> #include <mach/irqs.h> -/* register offsets */ -#define _OMAP_TIMER_ID_OFFSET 0x00 -#define _OMAP_TIMER_OCP_CFG_OFFSET 0x10 -#define _OMAP_TIMER_SYS_STAT_OFFSET 0x14 -#define _OMAP_TIMER_STAT_OFFSET 0x18 -#define _OMAP_TIMER_INT_EN_OFFSET 0x1c -#define _OMAP_TIMER_WAKEUP_EN_OFFSET 0x20 -#define _OMAP_TIMER_CTRL_OFFSET 0x24 -#define OMAP_TIMER_CTRL_GPOCFG (1 << 14) -#define OMAP_TIMER_CTRL_CAPTMODE (1 << 13) -#define OMAP_TIMER_CTRL_PT (1 << 12) -#define OMAP_TIMER_CTRL_TCM_LOWTOHIGH (0x1 << 8) -#define OMAP_TIMER_CTRL_TCM_HIGHTOLOW (0x2 << 8) -#define OMAP_TIMER_CTRL_TCM_BOTHEDGES (0x3 << 8) -#define OMAP_TIMER_CTRL_SCPWM (1 << 7) -#define OMAP_TIMER_CTRL_CE (1 << 6) /* compare enable */ -#define OMAP_TIMER_CTRL_PRE (1 << 5) /* prescaler enable */ -#define OMAP_TIMER_CTRL_PTV_SHIFT 2 /* prescaler value shift */ -#define OMAP_TIMER_CTRL_POSTED (1 << 2) -#define OMAP_TIMER_CTRL_AR (1 << 1) /* auto-reload enable */ -#define OMAP_TIMER_CTRL_ST (1 << 0) /* start timer */ -#define _OMAP_TIMER_COUNTER_OFFSET 0x28 -#define _OMAP_TIMER_LOAD_OFFSET 0x2c -#define _OMAP_TIMER_TRIGGER_OFFSET 0x30 -#define _OMAP_TIMER_WRITE_PEND_OFFSET 0x34 -#define WP_NONE 0 /* no write pending bit */ -#define WP_TCLR (1 << 0) -#define WP_TCRR (1 << 1) -#define WP_TLDR (1 << 2) -#define WP_TTGR (1 << 3) -#define WP_TMAR (1 << 4) -#define WP_TPIR (1 << 5) -#define WP_TNIR (1 << 6) -#define WP_TCVR (1 << 7) -#define WP_TOCR (1 << 8) -#define WP_TOWR (1 << 9) -#define _OMAP_TIMER_MATCH_OFFSET 0x38 -#define _OMAP_TIMER_CAPTURE_OFFSET 0x3c -#define _OMAP_TIMER_IF_CTRL_OFFSET 0x40 -#define _OMAP_TIMER_CAPTURE2_OFFSET 0x44 /* TCAR2, 34xx only */ -#define _OMAP_TIMER_TICK_POS_OFFSET 0x48 /* TPIR, 34xx only */ -#define _OMAP_TIMER_TICK_NEG_OFFSET 0x4c /* TNIR, 34xx only */ -#define _OMAP_TIMER_TICK_COUNT_OFFSET 0x50 /* TCVR, 34xx only */ -#define _OMAP_TIMER_TICK_INT_MASK_SET_OFFSET 0x54 /* TOCR, 34xx only */ -#define _OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET 0x58 /* TOWR, 34xx only */ - -/* register offsets with the write pending bit encoded */ -#define WPSHIFT 16 - -#define OMAP_TIMER_ID_REG (_OMAP_TIMER_ID_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_OCP_CFG_REG (_OMAP_TIMER_OCP_CFG_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_SYS_STAT_REG (_OMAP_TIMER_SYS_STAT_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_STAT_REG (_OMAP_TIMER_STAT_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_INT_EN_REG (_OMAP_TIMER_INT_EN_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_WAKEUP_EN_REG (_OMAP_TIMER_WAKEUP_EN_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_CTRL_REG (_OMAP_TIMER_CTRL_OFFSET \ - | (WP_TCLR << WPSHIFT)) - -#define OMAP_TIMER_COUNTER_REG (_OMAP_TIMER_COUNTER_OFFSET \ - | (WP_TCRR << WPSHIFT)) - -#define OMAP_TIMER_LOAD_REG (_OMAP_TIMER_LOAD_OFFSET \ - | (WP_TLDR << WPSHIFT)) - -#define OMAP_TIMER_TRIGGER_REG (_OMAP_TIMER_TRIGGER_OFFSET \ - | (WP_TTGR << WPSHIFT)) - -#define OMAP_TIMER_WRITE_PEND_REG (_OMAP_TIMER_WRITE_PEND_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_MATCH_REG (_OMAP_TIMER_MATCH_OFFSET \ - | (WP_TMAR << WPSHIFT)) - -#define OMAP_TIMER_CAPTURE_REG (_OMAP_TIMER_CAPTURE_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_IF_CTRL_REG (_OMAP_TIMER_IF_CTRL_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_CAPTURE2_REG (_OMAP_TIMER_CAPTURE2_OFFSET \ - | (WP_NONE << WPSHIFT)) - -#define OMAP_TIMER_TICK_POS_REG (_OMAP_TIMER_TICK_POS_OFFSET \ - | (WP_TPIR << WPSHIFT)) - -#define OMAP_TIMER_TICK_NEG_REG (_OMAP_TIMER_TICK_NEG_OFFSET \ - | (WP_TNIR << WPSHIFT)) - -#define OMAP_TIMER_TICK_COUNT_REG (_OMAP_TIMER_TICK_COUNT_OFFSET \ - | (WP_TCVR << WPSHIFT)) - -#define OMAP_TIMER_TICK_INT_MASK_SET_REG \ - (_OMAP_TIMER_TICK_INT_MASK_SET_OFFSET | (WP_TOCR << WPSHIFT)) - -#define OMAP_TIMER_TICK_INT_MASK_COUNT_REG \ - (_OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET | (WP_TOWR << WPSHIFT)) - -struct omap_dm_timer { - unsigned long phys_base; - int irq; -#ifdef CONFIG_ARCH_OMAP2PLUS - struct clk *iclk, *fclk; -#endif - void __iomem *io_base; - unsigned reserved:1; - unsigned enabled:1; - unsigned posted:1; -}; - static int dm_timer_count; #ifdef CONFIG_ARCH_OMAP1 @@ -291,11 +170,7 @@ static spinlock_t dm_timer_lock; */ static inline u32 omap_dm_timer_read_reg(struct omap_dm_timer *timer, u32 reg) { - if (timer->posted) - while (readl(timer->io_base + (OMAP_TIMER_WRITE_PEND_REG & 0xff)) - & (reg >> WPSHIFT)) - cpu_relax(); - return readl(timer->io_base + (reg & 0xff)); + return __omap_dm_timer_read(timer->io_base, reg, timer->posted); } /* @@ -307,11 +182,7 @@ static inline u32 omap_dm_timer_read_reg(struct omap_dm_timer *timer, u32 reg) static void omap_dm_timer_write_reg(struct omap_dm_timer *timer, u32 reg, u32 value) { - if (timer->posted) - while (readl(timer->io_base + (OMAP_TIMER_WRITE_PEND_REG & 0xff)) - & (reg >> WPSHIFT)) - cpu_relax(); - writel(value, timer->io_base + (reg & 0xff)); + __omap_dm_timer_write(timer->io_base, reg, value, timer->posted); } static void omap_dm_timer_wait_for_reset(struct omap_dm_timer *timer) @@ -330,7 +201,7 @@ static void omap_dm_timer_wait_for_reset(struct omap_dm_timer *timer) static void omap_dm_timer_reset(struct omap_dm_timer *timer) { - u32 l; + int autoidle = 0, wakeup = 0; if (!cpu_class_is_omap2() || timer != &dm_timers[0]) { omap_dm_timer_write_reg(timer, OMAP_TIMER_IF_CTRL_REG, 0x06); @@ -338,28 +209,21 @@ static void omap_dm_timer_reset(struct omap_dm_timer *timer) } omap_dm_timer_set_source(timer, OMAP_TIMER_SRC_32_KHZ); - l = omap_dm_timer_read_reg(timer, OMAP_TIMER_OCP_CFG_REG); - l |= 0x02 << 3; /* Set to smart-idle mode */ - l |= 0x2 << 8; /* Set clock activity to perserve f-clock on idle */ - - /* Enable autoidle on OMAP2 / OMAP3 */ - if (cpu_is_omap24xx() || cpu_is_omap34xx()) - l |= 0x1 << 0; + /* Enable autoidle on OMAP2+ */ + if (cpu_class_is_omap2()) + autoidle = 1; /* * Enable wake-up on OMAP2 CPUs. */ if (cpu_class_is_omap2()) - l |= 1 << 2; - omap_dm_timer_write_reg(timer, OMAP_TIMER_OCP_CFG_REG, l); + wakeup = 1; - /* Match hardware reset default of posted mode */ - omap_dm_timer_write_reg(timer, OMAP_TIMER_IF_CTRL_REG, - OMAP_TIMER_CTRL_POSTED); + __omap_dm_timer_reset(timer->io_base, autoidle, wakeup); timer->posted = 1; } -static void omap_dm_timer_prepare(struct omap_dm_timer *timer) +void omap_dm_timer_prepare(struct omap_dm_timer *timer) { omap_dm_timer_enable(timer); omap_dm_timer_reset(timer); @@ -531,25 +395,13 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_start); void omap_dm_timer_stop(struct omap_dm_timer *timer) { - u32 l; + unsigned long rate = 0; - l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); - if (l & OMAP_TIMER_CTRL_ST) { - l &= ~0x1; - omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l); #ifdef CONFIG_ARCH_OMAP2PLUS - /* Readback to make sure write has completed */ - omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); - /* - * Wait for functional clock period x 3.5 to make sure that - * timer is stopped - */ - udelay(3500000 / clk_get_rate(timer->fclk) + 1); + rate = clk_get_rate(timer->fclk); #endif - } - /* Ack possibly pending interrupt */ - omap_dm_timer_write_reg(timer, OMAP_TIMER_STAT_REG, - OMAP_TIMER_INT_OVERFLOW); + + __omap_dm_timer_stop(timer->io_base, timer->posted, rate); } EXPORT_SYMBOL_GPL(omap_dm_timer_stop); @@ -572,22 +424,11 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_set_source); int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) { - int ret = -EINVAL; - if (source < 0 || source >= 3) return -EINVAL; - clk_disable(timer->fclk); - ret = clk_set_parent(timer->fclk, dm_source_clocks[source]); - clk_enable(timer->fclk); - - /* - * When the functional clock disappears, too quick writes seem - * to cause an abort. XXX Is this still necessary? - */ - __delay(300000); - - return ret; + return __omap_dm_timer_set_source(timer->fclk, + dm_source_clocks[source]); } EXPORT_SYMBOL_GPL(omap_dm_timer_set_source); @@ -625,8 +466,7 @@ void omap_dm_timer_set_load_start(struct omap_dm_timer *timer, int autoreload, } l |= OMAP_TIMER_CTRL_ST; - omap_dm_timer_write_reg(timer, OMAP_TIMER_COUNTER_REG, load); - omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l); + __omap_dm_timer_load_start(timer->io_base, l, load, timer->posted); } EXPORT_SYMBOL_GPL(omap_dm_timer_set_load_start); @@ -679,8 +519,7 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_set_prescaler); void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value) { - omap_dm_timer_write_reg(timer, OMAP_TIMER_INT_EN_REG, value); - omap_dm_timer_write_reg(timer, OMAP_TIMER_WAKEUP_EN_REG, value); + __omap_dm_timer_int_enable(timer->io_base, value); } EXPORT_SYMBOL_GPL(omap_dm_timer_set_int_enable); @@ -696,17 +535,13 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_read_status); void omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value) { - omap_dm_timer_write_reg(timer, OMAP_TIMER_STAT_REG, value); + __omap_dm_timer_write_status(timer->io_base, value); } EXPORT_SYMBOL_GPL(omap_dm_timer_write_status); unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer) { - unsigned int l; - - l = omap_dm_timer_read_reg(timer, OMAP_TIMER_COUNTER_REG); - - return l; + return __omap_dm_timer_read_counter(timer->io_base, timer->posted); } EXPORT_SYMBOL_GPL(omap_dm_timer_read_counter); @@ -737,7 +572,7 @@ int omap_dm_timers_active(void) } EXPORT_SYMBOL_GPL(omap_dm_timers_active); -int __init omap_dm_timer_init(void) +static int __init omap_dm_timer_init(void) { struct omap_dm_timer *timer; int i, map_size = SZ_8K; /* Module 4KB + L4 4KB except on omap1 */ @@ -790,8 +625,16 @@ int __init omap_dm_timer_init(void) sprintf(clk_name, "gpt%d_fck", i + 1); timer->fclk = clk_get(NULL, clk_name); } + + /* One or two timers may be set up early for sys_timer */ + if (sys_timer_reserved & (1 << i)) { + timer->reserved = 1; + timer->posted = 1; + } #endif } return 0; } + +arch_initcall(omap_dm_timer_init); diff --git a/arch/arm/plat-omap/include/plat/common.h b/arch/arm/plat-omap/include/plat/common.h index 5288130be96e..4564cc697d7f 100644 --- a/arch/arm/plat-omap/include/plat/common.h +++ b/arch/arm/plat-omap/include/plat/common.h @@ -34,7 +34,11 @@ struct sys_timer; extern void omap_map_common_io(void); -extern struct sys_timer omap_timer; +extern struct sys_timer omap1_timer; +extern struct sys_timer omap2_timer; +extern struct sys_timer omap3_timer; +extern struct sys_timer omap3_secure_timer; +extern struct sys_timer omap4_timer; extern bool omap_32k_timer_init(void); extern int __init omap_init_clocksource_32k(void); extern unsigned long long notrace omap_32k_sched_clock(void); diff --git a/arch/arm/plat-omap/include/plat/dmtimer.h b/arch/arm/plat-omap/include/plat/dmtimer.h index d6c70d2f4030..d0f3a2d22fd3 100644 --- a/arch/arm/plat-omap/include/plat/dmtimer.h +++ b/arch/arm/plat-omap/include/plat/dmtimer.h @@ -32,6 +32,9 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include <linux/clk.h> +#include <linux/delay.h> + #ifndef __ASM_ARCH_DMTIMER_H #define __ASM_ARCH_DMTIMER_H @@ -56,12 +59,8 @@ */ #define OMAP_TIMER_IP_VERSION_1 0x1 struct omap_dm_timer; -extern struct omap_dm_timer *gptimer_wakeup; -extern struct sys_timer omap_timer; struct clk; -int omap_dm_timer_init(void); - struct omap_dm_timer *omap_dm_timer_request(void); struct omap_dm_timer *omap_dm_timer_request_specific(int timer_id); void omap_dm_timer_free(struct omap_dm_timer *timer); @@ -93,5 +92,248 @@ void omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value int omap_dm_timers_active(void); +/* + * Do not use the defines below, they are not needed. They should be only + * used by dmtimer.c and sys_timer related code. + */ + +/* register offsets */ +#define _OMAP_TIMER_ID_OFFSET 0x00 +#define _OMAP_TIMER_OCP_CFG_OFFSET 0x10 +#define _OMAP_TIMER_SYS_STAT_OFFSET 0x14 +#define _OMAP_TIMER_STAT_OFFSET 0x18 +#define _OMAP_TIMER_INT_EN_OFFSET 0x1c +#define _OMAP_TIMER_WAKEUP_EN_OFFSET 0x20 +#define _OMAP_TIMER_CTRL_OFFSET 0x24 +#define OMAP_TIMER_CTRL_GPOCFG (1 << 14) +#define OMAP_TIMER_CTRL_CAPTMODE (1 << 13) +#define OMAP_TIMER_CTRL_PT (1 << 12) +#define OMAP_TIMER_CTRL_TCM_LOWTOHIGH (0x1 << 8) +#define OMAP_TIMER_CTRL_TCM_HIGHTOLOW (0x2 << 8) +#define OMAP_TIMER_CTRL_TCM_BOTHEDGES (0x3 << 8) +#define OMAP_TIMER_CTRL_SCPWM (1 << 7) +#define OMAP_TIMER_CTRL_CE (1 << 6) /* compare enable */ +#define OMAP_TIMER_CTRL_PRE (1 << 5) /* prescaler enable */ +#define OMAP_TIMER_CTRL_PTV_SHIFT 2 /* prescaler value shift */ +#define OMAP_TIMER_CTRL_POSTED (1 << 2) +#define OMAP_TIMER_CTRL_AR (1 << 1) /* auto-reload enable */ +#define OMAP_TIMER_CTRL_ST (1 << 0) /* start timer */ +#define _OMAP_TIMER_COUNTER_OFFSET 0x28 +#define _OMAP_TIMER_LOAD_OFFSET 0x2c +#define _OMAP_TIMER_TRIGGER_OFFSET 0x30 +#define _OMAP_TIMER_WRITE_PEND_OFFSET 0x34 +#define WP_NONE 0 /* no write pending bit */ +#define WP_TCLR (1 << 0) +#define WP_TCRR (1 << 1) +#define WP_TLDR (1 << 2) +#define WP_TTGR (1 << 3) +#define WP_TMAR (1 << 4) +#define WP_TPIR (1 << 5) +#define WP_TNIR (1 << 6) +#define WP_TCVR (1 << 7) +#define WP_TOCR (1 << 8) +#define WP_TOWR (1 << 9) +#define _OMAP_TIMER_MATCH_OFFSET 0x38 +#define _OMAP_TIMER_CAPTURE_OFFSET 0x3c +#define _OMAP_TIMER_IF_CTRL_OFFSET 0x40 +#define _OMAP_TIMER_CAPTURE2_OFFSET 0x44 /* TCAR2, 34xx only */ +#define _OMAP_TIMER_TICK_POS_OFFSET 0x48 /* TPIR, 34xx only */ +#define _OMAP_TIMER_TICK_NEG_OFFSET 0x4c /* TNIR, 34xx only */ +#define _OMAP_TIMER_TICK_COUNT_OFFSET 0x50 /* TCVR, 34xx only */ +#define _OMAP_TIMER_TICK_INT_MASK_SET_OFFSET 0x54 /* TOCR, 34xx only */ +#define _OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET 0x58 /* TOWR, 34xx only */ + +/* register offsets with the write pending bit encoded */ +#define WPSHIFT 16 + +#define OMAP_TIMER_ID_REG (_OMAP_TIMER_ID_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_OCP_CFG_REG (_OMAP_TIMER_OCP_CFG_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_SYS_STAT_REG (_OMAP_TIMER_SYS_STAT_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_STAT_REG (_OMAP_TIMER_STAT_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_INT_EN_REG (_OMAP_TIMER_INT_EN_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_WAKEUP_EN_REG (_OMAP_TIMER_WAKEUP_EN_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_CTRL_REG (_OMAP_TIMER_CTRL_OFFSET \ + | (WP_TCLR << WPSHIFT)) + +#define OMAP_TIMER_COUNTER_REG (_OMAP_TIMER_COUNTER_OFFSET \ + | (WP_TCRR << WPSHIFT)) + +#define OMAP_TIMER_LOAD_REG (_OMAP_TIMER_LOAD_OFFSET \ + | (WP_TLDR << WPSHIFT)) + +#define OMAP_TIMER_TRIGGER_REG (_OMAP_TIMER_TRIGGER_OFFSET \ + | (WP_TTGR << WPSHIFT)) + +#define OMAP_TIMER_WRITE_PEND_REG (_OMAP_TIMER_WRITE_PEND_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_MATCH_REG (_OMAP_TIMER_MATCH_OFFSET \ + | (WP_TMAR << WPSHIFT)) + +#define OMAP_TIMER_CAPTURE_REG (_OMAP_TIMER_CAPTURE_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_IF_CTRL_REG (_OMAP_TIMER_IF_CTRL_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_CAPTURE2_REG (_OMAP_TIMER_CAPTURE2_OFFSET \ + | (WP_NONE << WPSHIFT)) + +#define OMAP_TIMER_TICK_POS_REG (_OMAP_TIMER_TICK_POS_OFFSET \ + | (WP_TPIR << WPSHIFT)) + +#define OMAP_TIMER_TICK_NEG_REG (_OMAP_TIMER_TICK_NEG_OFFSET \ + | (WP_TNIR << WPSHIFT)) + +#define OMAP_TIMER_TICK_COUNT_REG (_OMAP_TIMER_TICK_COUNT_OFFSET \ + | (WP_TCVR << WPSHIFT)) + +#define OMAP_TIMER_TICK_INT_MASK_SET_REG \ + (_OMAP_TIMER_TICK_INT_MASK_SET_OFFSET | (WP_TOCR << WPSHIFT)) + +#define OMAP_TIMER_TICK_INT_MASK_COUNT_REG \ + (_OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET | (WP_TOWR << WPSHIFT)) + +struct omap_dm_timer { + unsigned long phys_base; + int irq; +#ifdef CONFIG_ARCH_OMAP2PLUS + struct clk *iclk, *fclk; +#endif + void __iomem *io_base; + unsigned long rate; + unsigned reserved:1; + unsigned enabled:1; + unsigned posted:1; +}; + +extern u32 sys_timer_reserved; +void omap_dm_timer_prepare(struct omap_dm_timer *timer); + +static inline u32 __omap_dm_timer_read(void __iomem *base, u32 reg, + int posted) +{ + if (posted) + while (__raw_readl(base + (OMAP_TIMER_WRITE_PEND_REG & 0xff)) + & (reg >> WPSHIFT)) + cpu_relax(); + + return __raw_readl(base + (reg & 0xff)); +} + +static inline void __omap_dm_timer_write(void __iomem *base, u32 reg, u32 val, + int posted) +{ + if (posted) + while (__raw_readl(base + (OMAP_TIMER_WRITE_PEND_REG & 0xff)) + & (reg >> WPSHIFT)) + cpu_relax(); + + __raw_writel(val, base + (reg & 0xff)); +} + +/* Assumes the source clock has been set by caller */ +static inline void __omap_dm_timer_reset(void __iomem *base, int autoidle, + int wakeup) +{ + u32 l; + + l = __omap_dm_timer_read(base, OMAP_TIMER_OCP_CFG_REG, 0); + l |= 0x02 << 3; /* Set to smart-idle mode */ + l |= 0x2 << 8; /* Set clock activity to perserve f-clock on idle */ + + if (autoidle) + l |= 0x1 << 0; + + if (wakeup) + l |= 1 << 2; + + __omap_dm_timer_write(base, OMAP_TIMER_OCP_CFG_REG, l, 0); + + /* Match hardware reset default of posted mode */ + __omap_dm_timer_write(base, OMAP_TIMER_IF_CTRL_REG, + OMAP_TIMER_CTRL_POSTED, 0); +} + +static inline int __omap_dm_timer_set_source(struct clk *timer_fck, + struct clk *parent) +{ + int ret; + + clk_disable(timer_fck); + ret = clk_set_parent(timer_fck, parent); + clk_enable(timer_fck); + + /* + * When the functional clock disappears, too quick writes seem + * to cause an abort. XXX Is this still necessary? + */ + __delay(300000); + + return ret; +} + +static inline void __omap_dm_timer_stop(void __iomem *base, int posted, + unsigned long rate) +{ + u32 l; + + l = __omap_dm_timer_read(base, OMAP_TIMER_CTRL_REG, posted); + if (l & OMAP_TIMER_CTRL_ST) { + l &= ~0x1; + __omap_dm_timer_write(base, OMAP_TIMER_CTRL_REG, l, posted); +#ifdef CONFIG_ARCH_OMAP2PLUS + /* Readback to make sure write has completed */ + __omap_dm_timer_read(base, OMAP_TIMER_CTRL_REG, posted); + /* + * Wait for functional clock period x 3.5 to make sure that + * timer is stopped + */ + udelay(3500000 / rate + 1); +#endif + } + + /* Ack possibly pending interrupt */ + __omap_dm_timer_write(base, OMAP_TIMER_STAT_REG, + OMAP_TIMER_INT_OVERFLOW, 0); +} + +static inline void __omap_dm_timer_load_start(void __iomem *base, u32 ctrl, + unsigned int load, int posted) +{ + __omap_dm_timer_write(base, OMAP_TIMER_COUNTER_REG, load, posted); + __omap_dm_timer_write(base, OMAP_TIMER_CTRL_REG, ctrl, posted); +} + +static inline void __omap_dm_timer_int_enable(void __iomem *base, + unsigned int value) +{ + __omap_dm_timer_write(base, OMAP_TIMER_INT_EN_REG, value, 0); + __omap_dm_timer_write(base, OMAP_TIMER_WAKEUP_EN_REG, value, 0); +} + +static inline unsigned int __omap_dm_timer_read_counter(void __iomem *base, + int posted) +{ + return __omap_dm_timer_read(base, OMAP_TIMER_COUNTER_REG, posted); +} + +static inline void __omap_dm_timer_write_status(void __iomem *base, + unsigned int value) +{ + __omap_dm_timer_write(base, OMAP_TIMER_STAT_REG, value, 0); +} #endif /* __ASM_ARCH_DMTIMER_H */ diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h index 5a25098ea7ea..c88432005665 100644 --- a/arch/arm/plat-omap/include/plat/irqs.h +++ b/arch/arm/plat-omap/include/plat/irqs.h @@ -428,7 +428,11 @@ #define INTCPS_NR_IRQS 96 #ifndef __ASSEMBLY__ -extern void omap_init_irq(void); +extern void __iomem *omap_irq_base; +void omap1_init_irq(void); +void omap2_init_irq(void); +void omap3_init_irq(void); +void ti816x_init_irq(void); extern int omap_irq_pending(void); void omap_intc_save_context(void); void omap_intc_restore_context(void); diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h index f8f690ab2997..9882c657b2d4 100644 --- a/arch/arm/plat-omap/include/plat/mcbsp.h +++ b/arch/arm/plat-omap/include/plat/mcbsp.h @@ -24,7 +24,6 @@ #ifndef __ASM_ARCH_OMAP_MCBSP_H #define __ASM_ARCH_OMAP_MCBSP_H -#include <linux/completion.h> #include <linux/spinlock.h> #include <mach/hardware.h> @@ -34,7 +33,7 @@ #define OMAP_MCBSP_PLATFORM_DEVICE(port_nr) \ static struct platform_device omap_mcbsp##port_nr = { \ .name = "omap-mcbsp-dai", \ - .id = OMAP_MCBSP##port_nr, \ + .id = port_nr - 1, \ } #define MCBSP_CONFIG_TYPE2 0x2 @@ -333,18 +332,6 @@ struct omap_mcbsp_reg_cfg { }; typedef enum { - OMAP_MCBSP1 = 0, - OMAP_MCBSP2, - OMAP_MCBSP3, - OMAP_MCBSP4, - OMAP_MCBSP5 -} omap_mcbsp_id; - -typedef int __bitwise omap_mcbsp_io_type_t; -#define OMAP_MCBSP_IRQ_IO ((__force omap_mcbsp_io_type_t) 1) -#define OMAP_MCBSP_POLL_IO ((__force omap_mcbsp_io_type_t) 2) - -typedef enum { OMAP_MCBSP_WORD_8 = 0, OMAP_MCBSP_WORD_12, OMAP_MCBSP_WORD_16, @@ -353,38 +340,6 @@ typedef enum { OMAP_MCBSP_WORD_32, } omap_mcbsp_word_length; -typedef enum { - OMAP_MCBSP_CLK_RISING = 0, - OMAP_MCBSP_CLK_FALLING, -} omap_mcbsp_clk_polarity; - -typedef enum { - OMAP_MCBSP_FS_ACTIVE_HIGH = 0, - OMAP_MCBSP_FS_ACTIVE_LOW, -} omap_mcbsp_fs_polarity; - -typedef enum { - OMAP_MCBSP_CLK_STP_MODE_NO_DELAY = 0, - OMAP_MCBSP_CLK_STP_MODE_DELAY, -} omap_mcbsp_clk_stp_mode; - - -/******* SPI specific mode **********/ -typedef enum { - OMAP_MCBSP_SPI_MASTER = 0, - OMAP_MCBSP_SPI_SLAVE, -} omap_mcbsp_spi_mode; - -struct omap_mcbsp_spi_cfg { - omap_mcbsp_spi_mode spi_mode; - omap_mcbsp_clk_polarity rx_clock_polarity; - omap_mcbsp_clk_polarity tx_clock_polarity; - omap_mcbsp_fs_polarity fsx_polarity; - u8 clk_div; - omap_mcbsp_clk_stp_mode clk_stp_mode; - omap_mcbsp_word_length word_length; -}; - /* Platform specific configuration */ struct omap_mcbsp_ops { void (*request)(unsigned int); @@ -422,25 +377,13 @@ struct omap_mcbsp { void __iomem *io_base; u8 id; u8 free; - omap_mcbsp_word_length rx_word_length; - omap_mcbsp_word_length tx_word_length; - omap_mcbsp_io_type_t io_type; /* IRQ or poll */ - /* IRQ based TX/RX */ int rx_irq; int tx_irq; /* DMA stuff */ u8 dma_rx_sync; - short dma_rx_lch; u8 dma_tx_sync; - short dma_tx_lch; - - /* Completion queues */ - struct completion tx_irq_completion; - struct completion rx_irq_completion; - struct completion tx_dma_completion; - struct completion rx_dma_completion; /* Protect the field .free, while checking if the mcbsp is in use */ spinlock_t lock; @@ -499,24 +442,9 @@ int omap_mcbsp_request(unsigned int id); void omap_mcbsp_free(unsigned int id); void omap_mcbsp_start(unsigned int id, int tx, int rx); void omap_mcbsp_stop(unsigned int id, int tx, int rx); -void omap_mcbsp_xmit_word(unsigned int id, u32 word); -u32 omap_mcbsp_recv_word(unsigned int id); - -int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer, unsigned int length); -int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer, unsigned int length); -int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word); -int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 * word); - /* McBSP functional clock source changing function */ extern int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id); -/* SPI specific API */ -void omap_mcbsp_set_spi_mode(unsigned int id, const struct omap_mcbsp_spi_cfg * spi_cfg); - -/* Polled read/write functions */ -int omap_mcbsp_pollread(unsigned int id, u16 * buf); -int omap_mcbsp_pollwrite(unsigned int id, u16 buf); -int omap_mcbsp_set_io_type(unsigned int id, omap_mcbsp_io_type_t io_type); /* McBSP signal muxing API */ void omap2_mcbsp1_mux_clkr_src(u8 mux); diff --git a/arch/arm/plat-omap/include/plat/nand.h b/arch/arm/plat-omap/include/plat/nand.h index d86d1ecf0068..67fc5060183e 100644 --- a/arch/arm/plat-omap/include/plat/nand.h +++ b/arch/arm/plat-omap/include/plat/nand.h @@ -19,15 +19,11 @@ enum nand_io { }; struct omap_nand_platform_data { - unsigned int options; int cs; - int gpio_irq; struct mtd_partition *parts; struct gpmc_timings *gpmc_t; int nr_parts; - int (*nand_setup)(void); - int (*dev_ready)(struct omap_nand_platform_data *); - int dma_channel; + bool dev_ready; int gpmc_irq; enum nand_io xfer_type; unsigned long phys_base; diff --git a/arch/arm/plat-omap/include/plat/omap4-keypad.h b/arch/arm/plat-omap/include/plat/omap4-keypad.h index 2b1d9bc1eebb..9fe6c8783236 100644 --- a/arch/arm/plat-omap/include/plat/omap4-keypad.h +++ b/arch/arm/plat-omap/include/plat/omap4-keypad.h @@ -10,5 +10,6 @@ struct omap4_keypad_platform_data { u8 cols; }; -extern int omap4_keyboard_init(struct omap4_keypad_platform_data *); +extern int omap4_keyboard_init(struct omap4_keypad_platform_data *, + struct omap_board_data *); #endif diff --git a/arch/arm/plat-omap/include/plat/uncompress.h b/arch/arm/plat-omap/include/plat/uncompress.h index ac4b60d9aa29..a067484cc4a2 100644 --- a/arch/arm/plat-omap/include/plat/uncompress.h +++ b/arch/arm/plat-omap/include/plat/uncompress.h @@ -148,6 +148,7 @@ static inline void __arch_decomp_setup(unsigned long arch_id) /* omap3 based boards using UART3 */ DEBUG_LL_OMAP3(3, cm_t35); DEBUG_LL_OMAP3(3, cm_t3517); + DEBUG_LL_OMAP3(3, cm_t3730); DEBUG_LL_OMAP3(3, craneboard); DEBUG_LL_OMAP3(3, devkit8000); DEBUG_LL_OMAP3(3, igep0020); diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c index 83a37c54342f..c60737c49a32 100644 --- a/arch/arm/plat-omap/iovmm.c +++ b/arch/arm/plat-omap/iovmm.c @@ -72,7 +72,7 @@ static size_t sgtable_len(const struct sg_table *sgt) for_each_sg(sgt->sgl, sg, sgt->nents, i) { size_t bytes; - bytes = sg_dma_len(sg); + bytes = sg->length; if (!iopgsz_ok(bytes)) { pr_err("%s: sg[%d] not iommu pagesize(%x)\n", @@ -198,7 +198,7 @@ static void *vmap_sg(const struct sg_table *sgt) int err; pa = sg_phys(sg); - bytes = sg_dma_len(sg); + bytes = sg->length; BUG_ON(bytes != PAGE_SIZE); @@ -476,7 +476,7 @@ static int map_iovm_area(struct iommu *obj, struct iovm_struct *new, struct iotlb_entry e; pa = sg_phys(sg); - bytes = sg_dma_len(sg); + bytes = sg->length; flags &= ~IOVMF_PGSZ_MASK; pgsz = bytes_to_iopgsz(bytes); diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c index 5587acf0eb2c..3c1fbdc92468 100644 --- a/arch/arm/plat-omap/mcbsp.c +++ b/arch/arm/plat-omap/mcbsp.c @@ -16,8 +16,6 @@ #include <linux/init.h> #include <linux/device.h> #include <linux/platform_device.h> -#include <linux/wait.h> -#include <linux/completion.h> #include <linux/interrupt.h> #include <linux/err.h> #include <linux/clk.h> @@ -25,7 +23,6 @@ #include <linux/io.h> #include <linux/slab.h> -#include <plat/dma.h> #include <plat/mcbsp.h> #include <plat/omap_device.h> #include <linux/pm_runtime.h> @@ -136,8 +133,6 @@ static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id) irqst_spcr2); /* Writing zero to XSYNC_ERR clears the IRQ */ MCBSP_WRITE(mcbsp_tx, SPCR2, MCBSP_READ_CACHE(mcbsp_tx, SPCR2)); - } else { - complete(&mcbsp_tx->tx_irq_completion); } return IRQ_HANDLED; @@ -156,41 +151,11 @@ static irqreturn_t omap_mcbsp_rx_irq_handler(int irq, void *dev_id) irqst_spcr1); /* Writing zero to RSYNC_ERR clears the IRQ */ MCBSP_WRITE(mcbsp_rx, SPCR1, MCBSP_READ_CACHE(mcbsp_rx, SPCR1)); - } else { - complete(&mcbsp_rx->rx_irq_completion); } return IRQ_HANDLED; } -static void omap_mcbsp_tx_dma_callback(int lch, u16 ch_status, void *data) -{ - struct omap_mcbsp *mcbsp_dma_tx = data; - - dev_dbg(mcbsp_dma_tx->dev, "TX DMA callback : 0x%x\n", - MCBSP_READ(mcbsp_dma_tx, SPCR2)); - - /* We can free the channels */ - omap_free_dma(mcbsp_dma_tx->dma_tx_lch); - mcbsp_dma_tx->dma_tx_lch = -1; - - complete(&mcbsp_dma_tx->tx_dma_completion); -} - -static void omap_mcbsp_rx_dma_callback(int lch, u16 ch_status, void *data) -{ - struct omap_mcbsp *mcbsp_dma_rx = data; - - dev_dbg(mcbsp_dma_rx->dev, "RX DMA callback : 0x%x\n", - MCBSP_READ(mcbsp_dma_rx, SPCR2)); - - /* We can free the channels */ - omap_free_dma(mcbsp_dma_rx->dma_rx_lch); - mcbsp_dma_rx->dma_rx_lch = -1; - - complete(&mcbsp_dma_rx->rx_dma_completion); -} - /* * omap_mcbsp_config simply write a config to the * appropriate McBSP. @@ -758,37 +723,6 @@ static inline void omap_st_start(struct omap_mcbsp *mcbsp) {} static inline void omap_st_stop(struct omap_mcbsp *mcbsp) {} #endif -/* - * We can choose between IRQ based or polled IO. - * This needs to be called before omap_mcbsp_request(). - */ -int omap_mcbsp_set_io_type(unsigned int id, omap_mcbsp_io_type_t io_type) -{ - struct omap_mcbsp *mcbsp; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return -ENODEV; - } - mcbsp = id_to_mcbsp_ptr(id); - - spin_lock(&mcbsp->lock); - - if (!mcbsp->free) { - dev_err(mcbsp->dev, "McBSP%d is currently in use\n", - mcbsp->id); - spin_unlock(&mcbsp->lock); - return -EINVAL; - } - - mcbsp->io_type = io_type; - - spin_unlock(&mcbsp->lock); - - return 0; -} -EXPORT_SYMBOL(omap_mcbsp_set_io_type); - int omap_mcbsp_request(unsigned int id) { struct omap_mcbsp *mcbsp; @@ -833,29 +767,24 @@ int omap_mcbsp_request(unsigned int id) MCBSP_WRITE(mcbsp, SPCR1, 0); MCBSP_WRITE(mcbsp, SPCR2, 0); - if (mcbsp->io_type == OMAP_MCBSP_IRQ_IO) { - /* We need to get IRQs here */ - init_completion(&mcbsp->tx_irq_completion); - err = request_irq(mcbsp->tx_irq, omap_mcbsp_tx_irq_handler, - 0, "McBSP", (void *)mcbsp); + err = request_irq(mcbsp->tx_irq, omap_mcbsp_tx_irq_handler, + 0, "McBSP", (void *)mcbsp); + if (err != 0) { + dev_err(mcbsp->dev, "Unable to request TX IRQ %d " + "for McBSP%d\n", mcbsp->tx_irq, + mcbsp->id); + goto err_clk_disable; + } + + if (mcbsp->rx_irq) { + err = request_irq(mcbsp->rx_irq, + omap_mcbsp_rx_irq_handler, + 0, "McBSP", (void *)mcbsp); if (err != 0) { - dev_err(mcbsp->dev, "Unable to request TX IRQ %d " - "for McBSP%d\n", mcbsp->tx_irq, + dev_err(mcbsp->dev, "Unable to request RX IRQ %d " + "for McBSP%d\n", mcbsp->rx_irq, mcbsp->id); - goto err_clk_disable; - } - - if (mcbsp->rx_irq) { - init_completion(&mcbsp->rx_irq_completion); - err = request_irq(mcbsp->rx_irq, - omap_mcbsp_rx_irq_handler, - 0, "McBSP", (void *)mcbsp); - if (err != 0) { - dev_err(mcbsp->dev, "Unable to request RX IRQ %d " - "for McBSP%d\n", mcbsp->rx_irq, - mcbsp->id); - goto err_free_irq; - } + goto err_free_irq; } } @@ -901,12 +830,9 @@ void omap_mcbsp_free(unsigned int id) pm_runtime_put_sync(mcbsp->dev); - if (mcbsp->io_type == OMAP_MCBSP_IRQ_IO) { - /* Free IRQs */ - if (mcbsp->rx_irq) - free_irq(mcbsp->rx_irq, (void *)mcbsp); - free_irq(mcbsp->tx_irq, (void *)mcbsp); - } + if (mcbsp->rx_irq) + free_irq(mcbsp->rx_irq, (void *)mcbsp); + free_irq(mcbsp->tx_irq, (void *)mcbsp); reg_cache = mcbsp->reg_cache; @@ -943,9 +869,6 @@ void omap_mcbsp_start(unsigned int id, int tx, int rx) if (cpu_is_omap34xx()) omap_st_start(mcbsp); - mcbsp->rx_word_length = (MCBSP_READ_CACHE(mcbsp, RCR1) >> 5) & 0x7; - mcbsp->tx_word_length = (MCBSP_READ_CACHE(mcbsp, XCR1) >> 5) & 0x7; - /* Only enable SRG, if McBSP is master */ w = MCBSP_READ_CACHE(mcbsp, PCR0); if (w & (FSXM | FSRM | CLKXM | CLKRM)) @@ -1043,485 +966,6 @@ void omap_mcbsp_stop(unsigned int id, int tx, int rx) } EXPORT_SYMBOL(omap_mcbsp_stop); -/* polled mcbsp i/o operations */ -int omap_mcbsp_pollwrite(unsigned int id, u16 buf) -{ - struct omap_mcbsp *mcbsp; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return -ENODEV; - } - - mcbsp = id_to_mcbsp_ptr(id); - - MCBSP_WRITE(mcbsp, DXR1, buf); - /* if frame sync error - clear the error */ - if (MCBSP_READ(mcbsp, SPCR2) & XSYNC_ERR) { - /* clear error */ - MCBSP_WRITE(mcbsp, SPCR2, MCBSP_READ_CACHE(mcbsp, SPCR2)); - /* resend */ - return -1; - } else { - /* wait for transmit confirmation */ - int attemps = 0; - while (!(MCBSP_READ(mcbsp, SPCR2) & XRDY)) { - if (attemps++ > 1000) { - MCBSP_WRITE(mcbsp, SPCR2, - MCBSP_READ_CACHE(mcbsp, SPCR2) & - (~XRST)); - udelay(10); - MCBSP_WRITE(mcbsp, SPCR2, - MCBSP_READ_CACHE(mcbsp, SPCR2) | - (XRST)); - udelay(10); - dev_err(mcbsp->dev, "Could not write to" - " McBSP%d Register\n", mcbsp->id); - return -2; - } - } - } - - return 0; -} -EXPORT_SYMBOL(omap_mcbsp_pollwrite); - -int omap_mcbsp_pollread(unsigned int id, u16 *buf) -{ - struct omap_mcbsp *mcbsp; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return -ENODEV; - } - mcbsp = id_to_mcbsp_ptr(id); - - /* if frame sync error - clear the error */ - if (MCBSP_READ(mcbsp, SPCR1) & RSYNC_ERR) { - /* clear error */ - MCBSP_WRITE(mcbsp, SPCR1, MCBSP_READ_CACHE(mcbsp, SPCR1)); - /* resend */ - return -1; - } else { - /* wait for receive confirmation */ - int attemps = 0; - while (!(MCBSP_READ(mcbsp, SPCR1) & RRDY)) { - if (attemps++ > 1000) { - MCBSP_WRITE(mcbsp, SPCR1, - MCBSP_READ_CACHE(mcbsp, SPCR1) & - (~RRST)); - udelay(10); - MCBSP_WRITE(mcbsp, SPCR1, - MCBSP_READ_CACHE(mcbsp, SPCR1) | - (RRST)); - udelay(10); - dev_err(mcbsp->dev, "Could not read from" - " McBSP%d Register\n", mcbsp->id); - return -2; - } - } - } - *buf = MCBSP_READ(mcbsp, DRR1); - - return 0; -} -EXPORT_SYMBOL(omap_mcbsp_pollread); - -/* - * IRQ based word transmission. - */ -void omap_mcbsp_xmit_word(unsigned int id, u32 word) -{ - struct omap_mcbsp *mcbsp; - omap_mcbsp_word_length word_length; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return; - } - - mcbsp = id_to_mcbsp_ptr(id); - word_length = mcbsp->tx_word_length; - - wait_for_completion(&mcbsp->tx_irq_completion); - - if (word_length > OMAP_MCBSP_WORD_16) - MCBSP_WRITE(mcbsp, DXR2, word >> 16); - MCBSP_WRITE(mcbsp, DXR1, word & 0xffff); -} -EXPORT_SYMBOL(omap_mcbsp_xmit_word); - -u32 omap_mcbsp_recv_word(unsigned int id) -{ - struct omap_mcbsp *mcbsp; - u16 word_lsb, word_msb = 0; - omap_mcbsp_word_length word_length; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return -ENODEV; - } - mcbsp = id_to_mcbsp_ptr(id); - - word_length = mcbsp->rx_word_length; - - wait_for_completion(&mcbsp->rx_irq_completion); - - if (word_length > OMAP_MCBSP_WORD_16) - word_msb = MCBSP_READ(mcbsp, DRR2); - word_lsb = MCBSP_READ(mcbsp, DRR1); - - return (word_lsb | (word_msb << 16)); -} -EXPORT_SYMBOL(omap_mcbsp_recv_word); - -int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word) -{ - struct omap_mcbsp *mcbsp; - omap_mcbsp_word_length tx_word_length; - omap_mcbsp_word_length rx_word_length; - u16 spcr2, spcr1, attempts = 0, word_lsb, word_msb = 0; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return -ENODEV; - } - mcbsp = id_to_mcbsp_ptr(id); - tx_word_length = mcbsp->tx_word_length; - rx_word_length = mcbsp->rx_word_length; - - if (tx_word_length != rx_word_length) - return -EINVAL; - - /* First we wait for the transmitter to be ready */ - spcr2 = MCBSP_READ(mcbsp, SPCR2); - while (!(spcr2 & XRDY)) { - spcr2 = MCBSP_READ(mcbsp, SPCR2); - if (attempts++ > 1000) { - /* We must reset the transmitter */ - MCBSP_WRITE(mcbsp, SPCR2, - MCBSP_READ_CACHE(mcbsp, SPCR2) & (~XRST)); - udelay(10); - MCBSP_WRITE(mcbsp, SPCR2, - MCBSP_READ_CACHE(mcbsp, SPCR2) | XRST); - udelay(10); - dev_err(mcbsp->dev, "McBSP%d transmitter not " - "ready\n", mcbsp->id); - return -EAGAIN; - } - } - - /* Now we can push the data */ - if (tx_word_length > OMAP_MCBSP_WORD_16) - MCBSP_WRITE(mcbsp, DXR2, word >> 16); - MCBSP_WRITE(mcbsp, DXR1, word & 0xffff); - - /* We wait for the receiver to be ready */ - spcr1 = MCBSP_READ(mcbsp, SPCR1); - while (!(spcr1 & RRDY)) { - spcr1 = MCBSP_READ(mcbsp, SPCR1); - if (attempts++ > 1000) { - /* We must reset the receiver */ - MCBSP_WRITE(mcbsp, SPCR1, - MCBSP_READ_CACHE(mcbsp, SPCR1) & (~RRST)); - udelay(10); - MCBSP_WRITE(mcbsp, SPCR1, - MCBSP_READ_CACHE(mcbsp, SPCR1) | RRST); - udelay(10); - dev_err(mcbsp->dev, "McBSP%d receiver not " - "ready\n", mcbsp->id); - return -EAGAIN; - } - } - - /* Receiver is ready, let's read the dummy data */ - if (rx_word_length > OMAP_MCBSP_WORD_16) - word_msb = MCBSP_READ(mcbsp, DRR2); - word_lsb = MCBSP_READ(mcbsp, DRR1); - - return 0; -} -EXPORT_SYMBOL(omap_mcbsp_spi_master_xmit_word_poll); - -int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 *word) -{ - struct omap_mcbsp *mcbsp; - u32 clock_word = 0; - omap_mcbsp_word_length tx_word_length; - omap_mcbsp_word_length rx_word_length; - u16 spcr2, spcr1, attempts = 0, word_lsb, word_msb = 0; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return -ENODEV; - } - - mcbsp = id_to_mcbsp_ptr(id); - - tx_word_length = mcbsp->tx_word_length; - rx_word_length = mcbsp->rx_word_length; - - if (tx_word_length != rx_word_length) - return -EINVAL; - - /* First we wait for the transmitter to be ready */ - spcr2 = MCBSP_READ(mcbsp, SPCR2); - while (!(spcr2 & XRDY)) { - spcr2 = MCBSP_READ(mcbsp, SPCR2); - if (attempts++ > 1000) { - /* We must reset the transmitter */ - MCBSP_WRITE(mcbsp, SPCR2, - MCBSP_READ_CACHE(mcbsp, SPCR2) & (~XRST)); - udelay(10); - MCBSP_WRITE(mcbsp, SPCR2, - MCBSP_READ_CACHE(mcbsp, SPCR2) | XRST); - udelay(10); - dev_err(mcbsp->dev, "McBSP%d transmitter not " - "ready\n", mcbsp->id); - return -EAGAIN; - } - } - - /* We first need to enable the bus clock */ - if (tx_word_length > OMAP_MCBSP_WORD_16) - MCBSP_WRITE(mcbsp, DXR2, clock_word >> 16); - MCBSP_WRITE(mcbsp, DXR1, clock_word & 0xffff); - - /* We wait for the receiver to be ready */ - spcr1 = MCBSP_READ(mcbsp, SPCR1); - while (!(spcr1 & RRDY)) { - spcr1 = MCBSP_READ(mcbsp, SPCR1); - if (attempts++ > 1000) { - /* We must reset the receiver */ - MCBSP_WRITE(mcbsp, SPCR1, - MCBSP_READ_CACHE(mcbsp, SPCR1) & (~RRST)); - udelay(10); - MCBSP_WRITE(mcbsp, SPCR1, - MCBSP_READ_CACHE(mcbsp, SPCR1) | RRST); - udelay(10); - dev_err(mcbsp->dev, "McBSP%d receiver not " - "ready\n", mcbsp->id); - return -EAGAIN; - } - } - - /* Receiver is ready, there is something for us */ - if (rx_word_length > OMAP_MCBSP_WORD_16) - word_msb = MCBSP_READ(mcbsp, DRR2); - word_lsb = MCBSP_READ(mcbsp, DRR1); - - word[0] = (word_lsb | (word_msb << 16)); - - return 0; -} -EXPORT_SYMBOL(omap_mcbsp_spi_master_recv_word_poll); - -/* - * Simple DMA based buffer rx/tx routines. - * Nothing fancy, just a single buffer tx/rx through DMA. - * The DMA resources are released once the transfer is done. - * For anything fancier, you should use your own customized DMA - * routines and callbacks. - */ -int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer, - unsigned int length) -{ - struct omap_mcbsp *mcbsp; - int dma_tx_ch; - int src_port = 0; - int dest_port = 0; - int sync_dev = 0; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return -ENODEV; - } - mcbsp = id_to_mcbsp_ptr(id); - - if (omap_request_dma(mcbsp->dma_tx_sync, "McBSP TX", - omap_mcbsp_tx_dma_callback, - mcbsp, - &dma_tx_ch)) { - dev_err(mcbsp->dev, " Unable to request DMA channel for " - "McBSP%d TX. Trying IRQ based TX\n", - mcbsp->id); - return -EAGAIN; - } - mcbsp->dma_tx_lch = dma_tx_ch; - - dev_err(mcbsp->dev, "McBSP%d TX DMA on channel %d\n", mcbsp->id, - dma_tx_ch); - - init_completion(&mcbsp->tx_dma_completion); - - if (cpu_class_is_omap1()) { - src_port = OMAP_DMA_PORT_TIPB; - dest_port = OMAP_DMA_PORT_EMIFF; - } - if (cpu_class_is_omap2()) - sync_dev = mcbsp->dma_tx_sync; - - omap_set_dma_transfer_params(mcbsp->dma_tx_lch, - OMAP_DMA_DATA_TYPE_S16, - length >> 1, 1, - OMAP_DMA_SYNC_ELEMENT, - sync_dev, 0); - - omap_set_dma_dest_params(mcbsp->dma_tx_lch, - src_port, - OMAP_DMA_AMODE_CONSTANT, - mcbsp->phys_base + OMAP_MCBSP_REG_DXR1, - 0, 0); - - omap_set_dma_src_params(mcbsp->dma_tx_lch, - dest_port, - OMAP_DMA_AMODE_POST_INC, - buffer, - 0, 0); - - omap_start_dma(mcbsp->dma_tx_lch); - wait_for_completion(&mcbsp->tx_dma_completion); - - return 0; -} -EXPORT_SYMBOL(omap_mcbsp_xmit_buffer); - -int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer, - unsigned int length) -{ - struct omap_mcbsp *mcbsp; - int dma_rx_ch; - int src_port = 0; - int dest_port = 0; - int sync_dev = 0; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return -ENODEV; - } - mcbsp = id_to_mcbsp_ptr(id); - - if (omap_request_dma(mcbsp->dma_rx_sync, "McBSP RX", - omap_mcbsp_rx_dma_callback, - mcbsp, - &dma_rx_ch)) { - dev_err(mcbsp->dev, "Unable to request DMA channel for " - "McBSP%d RX. Trying IRQ based RX\n", - mcbsp->id); - return -EAGAIN; - } - mcbsp->dma_rx_lch = dma_rx_ch; - - dev_err(mcbsp->dev, "McBSP%d RX DMA on channel %d\n", mcbsp->id, - dma_rx_ch); - - init_completion(&mcbsp->rx_dma_completion); - - if (cpu_class_is_omap1()) { - src_port = OMAP_DMA_PORT_TIPB; - dest_port = OMAP_DMA_PORT_EMIFF; - } - if (cpu_class_is_omap2()) - sync_dev = mcbsp->dma_rx_sync; - - omap_set_dma_transfer_params(mcbsp->dma_rx_lch, - OMAP_DMA_DATA_TYPE_S16, - length >> 1, 1, - OMAP_DMA_SYNC_ELEMENT, - sync_dev, 0); - - omap_set_dma_src_params(mcbsp->dma_rx_lch, - src_port, - OMAP_DMA_AMODE_CONSTANT, - mcbsp->phys_base + OMAP_MCBSP_REG_DRR1, - 0, 0); - - omap_set_dma_dest_params(mcbsp->dma_rx_lch, - dest_port, - OMAP_DMA_AMODE_POST_INC, - buffer, - 0, 0); - - omap_start_dma(mcbsp->dma_rx_lch); - wait_for_completion(&mcbsp->rx_dma_completion); - - return 0; -} -EXPORT_SYMBOL(omap_mcbsp_recv_buffer); - -/* - * SPI wrapper. - * Since SPI setup is much simpler than the generic McBSP one, - * this wrapper just need an omap_mcbsp_spi_cfg structure as an input. - * Once this is done, you can call omap_mcbsp_start(). - */ -void omap_mcbsp_set_spi_mode(unsigned int id, - const struct omap_mcbsp_spi_cfg *spi_cfg) -{ - struct omap_mcbsp *mcbsp; - struct omap_mcbsp_reg_cfg mcbsp_cfg; - - if (!omap_mcbsp_check_valid_id(id)) { - printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); - return; - } - mcbsp = id_to_mcbsp_ptr(id); - - memset(&mcbsp_cfg, 0, sizeof(struct omap_mcbsp_reg_cfg)); - - /* SPI has only one frame */ - mcbsp_cfg.rcr1 |= (RWDLEN1(spi_cfg->word_length) | RFRLEN1(0)); - mcbsp_cfg.xcr1 |= (XWDLEN1(spi_cfg->word_length) | XFRLEN1(0)); - - /* Clock stop mode */ - if (spi_cfg->clk_stp_mode == OMAP_MCBSP_CLK_STP_MODE_NO_DELAY) - mcbsp_cfg.spcr1 |= (1 << 12); - else - mcbsp_cfg.spcr1 |= (3 << 11); - - /* Set clock parities */ - if (spi_cfg->rx_clock_polarity == OMAP_MCBSP_CLK_RISING) - mcbsp_cfg.pcr0 |= CLKRP; - else - mcbsp_cfg.pcr0 &= ~CLKRP; - - if (spi_cfg->tx_clock_polarity == OMAP_MCBSP_CLK_RISING) - mcbsp_cfg.pcr0 &= ~CLKXP; - else - mcbsp_cfg.pcr0 |= CLKXP; - - /* Set SCLKME to 0 and CLKSM to 1 */ - mcbsp_cfg.pcr0 &= ~SCLKME; - mcbsp_cfg.srgr2 |= CLKSM; - - /* Set FSXP */ - if (spi_cfg->fsx_polarity == OMAP_MCBSP_FS_ACTIVE_HIGH) - mcbsp_cfg.pcr0 &= ~FSXP; - else - mcbsp_cfg.pcr0 |= FSXP; - - if (spi_cfg->spi_mode == OMAP_MCBSP_SPI_MASTER) { - mcbsp_cfg.pcr0 |= CLKXM; - mcbsp_cfg.srgr1 |= CLKGDV(spi_cfg->clk_div - 1); - mcbsp_cfg.pcr0 |= FSXM; - mcbsp_cfg.srgr2 &= ~FSGM; - mcbsp_cfg.xcr2 |= XDATDLY(1); - mcbsp_cfg.rcr2 |= RDATDLY(1); - } else { - mcbsp_cfg.pcr0 &= ~CLKXM; - mcbsp_cfg.srgr1 |= CLKGDV(1); - mcbsp_cfg.pcr0 &= ~FSXM; - mcbsp_cfg.xcr2 &= ~XDATDLY(3); - mcbsp_cfg.rcr2 &= ~RDATDLY(3); - } - - mcbsp_cfg.xcr2 &= ~XPHASE; - mcbsp_cfg.rcr2 &= ~RPHASE; - - omap_mcbsp_config(id, &mcbsp_cfg); -} -EXPORT_SYMBOL(omap_mcbsp_set_spi_mode); - #ifdef CONFIG_ARCH_OMAP3 #define max_thres(m) (mcbsp->pdata->buffer_size) #define valid_threshold(m, val) ((val) <= max_thres(m)) @@ -1833,8 +1277,6 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev) spin_lock_init(&mcbsp->lock); mcbsp->id = id + 1; mcbsp->free = true; - mcbsp->dma_tx_lch = -1; - mcbsp->dma_rx_lch = -1; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mpu"); if (!res) { @@ -1860,9 +1302,6 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev) else mcbsp->phys_dma_base = res->start; - /* Default I/O is IRQ based */ - mcbsp->io_type = OMAP_MCBSP_IRQ_IO; - mcbsp->tx_irq = platform_get_irq_byname(pdev, "tx"); mcbsp->rx_irq = platform_get_irq_byname(pdev, "rx"); |
