This patch add timer support to i.MX23 and complete bit fields and values on regs-timrot.h. Testet on imx23-olinuxino board.

Signed-off-by: Fadil Berisha f.koliqi@gmail.com --- v2 - Updated the struct mxs_timrot_regs so the mapping works for all registers

arch/arm/cpu/arm926ejs/mxs/timer.c | 39 ++++++++--- arch/arm/include/asm/arch-mxs/regs-timrot.h | 101 +++++++++++++++++++++++++++ 2 files changed, 130 insertions(+), 10 deletions(-)

diff --git a/arch/arm/cpu/arm926ejs/mxs/timer.c b/arch/arm/cpu/arm926ejs/mxs/timer.c index 4ed75e6..507b190 100644 --- a/arch/arm/cpu/arm926ejs/mxs/timer.c +++ b/arch/arm/cpu/arm926ejs/mxs/timer.c @@ -32,7 +32,11 @@ #include <asm/arch/sys_proto.h>

/* Maximum fixed count */ -#define TIMER_LOAD_VAL 0xffffffff +#if defined(CONFIG_MX23) +#define TIMER_LOAD_VAL 0xffff +#elif defined(CONFIG_MX28) +#define TIMER_LOAD_VAL 0xffffffff +#endif

DECLARE_GLOBAL_DATA_PTR;

@@ -42,22 +46,22 @@ DECLARE_GLOBAL_DATA_PTR; /* * This driver uses 1kHz clock source. */ -#define MX28_INCREMENTER_HZ 1000 +#define MXS_INCREMENTER_HZ 1000

static inline unsigned long tick_to_time(unsigned long tick) { - return tick / (MX28_INCREMENTER_HZ / CONFIG_SYS_HZ); + return tick / (MXS_INCREMENTER_HZ / CONFIG_SYS_HZ); }

static inline unsigned long time_to_tick(unsigned long time) { - return time * (MX28_INCREMENTER_HZ / CONFIG_SYS_HZ); + return time * (MXS_INCREMENTER_HZ / CONFIG_SYS_HZ); }

/* Calculate how many ticks happen in "us" microseconds */ static inline unsigned long us_to_tick(unsigned long us) { - return (us * MX28_INCREMENTER_HZ) / 1000000; + return (us * MXS_INCREMENTER_HZ) / 1000000; }

int timer_init(void) @@ -69,7 +73,11 @@ int timer_init(void) mxs_reset_block(&timrot_regs->hw_timrot_rotctrl_reg);

/* Set fixed_count to 0 */ +#if defined(CONFIG_MX23) + writel(0, &timrot_regs->hw_timrot_timcount0); +#elif defined(CONFIG_MX28) writel(0, &timrot_regs->hw_timrot_fixed_count0); +#endif

/* Set UPDATE bit and 1Khz frequency */ writel(TIMROT_TIMCTRLn_UPDATE | TIMROT_TIMCTRLn_RELOAD | @@ -77,7 +85,11 @@ int timer_init(void) &timrot_regs->hw_timrot_timctrl0);

/* Set fixed_count to maximal value */ +#if defined(CONFIG_MX23) + writel(TIMER_LOAD_VAL-1, &timrot_regs->hw_timrot_timcount0); +#elif defined(CONFIG_MX28) writel(TIMER_LOAD_VAL, &timrot_regs->hw_timrot_fixed_count0); +#endif

return 0; } @@ -86,9 +98,16 @@ unsigned long long get_ticks(void) { struct mxs_timrot_regs *timrot_regs = (struct mxs_timrot_regs *)MXS_TIMROT_BASE; + uint32_t now;

/* Current tick value */ - uint32_t now = readl(&timrot_regs->hw_timrot_running_count0); +#if defined(CONFIG_MX23) + /* upper bits are the valid */ + now = readl(&timrot_regs->hw_timrot_timcount0) >> + TIMROT_RUNNING_COUNTn_RUNNING_COUNT_OFFSET; +#elif defined(CONFIG_MX28) + now = readl(&timrot_regs->hw_timrot_running_count0); +#endif

if (lastdec >= now) { /* @@ -117,17 +136,17 @@ ulong get_timer(ulong base) }

/* We use the HW_DIGCTL_MICROSECONDS register for sub-millisecond timer. */ -#define MX28_HW_DIGCTL_MICROSECONDS 0x8001c0c0 +#define MXS_HW_DIGCTL_MICROSECONDS 0x8001c0c0

void __udelay(unsigned long usec) { uint32_t old, new, incr; uint32_t counter = 0;

- old = readl(MX28_HW_DIGCTL_MICROSECONDS); + old = readl(MXS_HW_DIGCTL_MICROSECONDS);

while (counter < usec) { - new = readl(MX28_HW_DIGCTL_MICROSECONDS); + new = readl(MXS_HW_DIGCTL_MICROSECONDS);

/* Check if the timer wrapped. */ if (new < old) { @@ -152,5 +171,5 @@ void __udelay(unsigned long usec)

ulong get_tbclk(void) { - return MX28_INCREMENTER_HZ; + return MXS_INCREMENTER_HZ; } diff --git a/arch/arm/include/asm/arch-mxs/regs-timrot.h b/arch/arm/include/asm/arch-mxs/regs-timrot.h index 529a3bc..8402db6 100644 --- a/arch/arm/include/asm/arch-mxs/regs-timrot.h +++ b/arch/arm/include/asm/arch-mxs/regs-timrot.h @@ -31,6 +31,16 @@ struct mxs_timrot_regs { mxs_reg_32(hw_timrot_rotctrl) mxs_reg_32(hw_timrot_rotcount) +#if defined(CONFIG_MX23) + mxs_reg_32(hw_timrot_timctrl0) + mxs_reg_32(hw_timrot_timcount0) + mxs_reg_32(hw_timrot_timctrl1) + mxs_reg_32(hw_timrot_timcount1) + mxs_reg_32(hw_timrot_timctrl2) + mxs_reg_32(hw_timrot_timcount2) + mxs_reg_32(hw_timrot_timctrl3) + mxs_reg_32(hw_timrot_timcount3) +#elif defined(CONFIG_MX28) mxs_reg_32(hw_timrot_timctrl0) mxs_reg_32(hw_timrot_running_count0) mxs_reg_32(hw_timrot_fixed_count0) @@ -47,6 +57,7 @@ struct mxs_timrot_regs { mxs_reg_32(hw_timrot_running_count3) mxs_reg_32(hw_timrot_fixed_count3) mxs_reg_32(hw_timrot_match_count3) +#endif mxs_reg_32(hw_timrot_version) }; #endif @@ -71,7 +82,11 @@ struct mxs_timrot_regs { #define TIMROT_ROTCTRL_OVERSAMPLE_1X (0x3 << 10) #define TIMROT_ROTCTRL_POLARITY_B (1 << 9) #define TIMROT_ROTCTRL_POLARITY_A (1 << 8) +#if defined(CONFIG_MX23) +#define TIMROT_ROTCTRL_SELECT_B_MASK (0x7 << 4) +#elif defined(CONFIG_MX28) #define TIMROT_ROTCTRL_SELECT_B_MASK (0xf << 4) +#endif #define TIMROT_ROTCTRL_SELECT_B_OFFSET 4 #define TIMROT_ROTCTRL_SELECT_B_NEVER_TICK (0x0 << 4) #define TIMROT_ROTCTRL_SELECT_B_PWM0 (0x1 << 4) @@ -79,12 +94,21 @@ struct mxs_timrot_regs { #define TIMROT_ROTCTRL_SELECT_B_PWM2 (0x3 << 4) #define TIMROT_ROTCTRL_SELECT_B_PWM3 (0x4 << 4) #define TIMROT_ROTCTRL_SELECT_B_PWM4 (0x5 << 4) +#if defined(CONFIG_MX23) +#define TIMROT_ROTCTRL_SELECT_B_ROTARYA (0x6 << 4) +#define TIMROT_ROTCTRL_SELECT_B_ROTARYB (0x7 << 4) +#elif defined(CONFIG_MX28) #define TIMROT_ROTCTRL_SELECT_B_PWM5 (0x6 << 4) #define TIMROT_ROTCTRL_SELECT_B_PWM6 (0x7 << 4) #define TIMROT_ROTCTRL_SELECT_B_PWM7 (0x8 << 4) #define TIMROT_ROTCTRL_SELECT_B_ROTARYA (0x9 << 4) #define TIMROT_ROTCTRL_SELECT_B_ROTARYB (0xa << 4) +#endif +#if defined(CONFIG_MX23) +#define TIMROT_ROTCTRL_SELECT_A_MASK 0x7 +#elif defined(CONFIG_MX28) #define TIMROT_ROTCTRL_SELECT_A_MASK 0xf +#endif #define TIMROT_ROTCTRL_SELECT_A_OFFSET 0 #define TIMROT_ROTCTRL_SELECT_A_NEVER_TICK 0x0 #define TIMROT_ROTCTRL_SELECT_A_PWM0 0x1 @@ -92,18 +116,25 @@ struct mxs_timrot_regs { #define TIMROT_ROTCTRL_SELECT_A_PWM2 0x3 #define TIMROT_ROTCTRL_SELECT_A_PWM3 0x4 #define TIMROT_ROTCTRL_SELECT_A_PWM4 0x5 +#if defined(CONFIG_MX23) +#define TIMROT_ROTCTRL_SELECT_A_ROTARYA 0x6 +#define TIMROT_ROTCTRL_SELECT_A_ROTARYB 0x7 +#elif defined(CONFIG_MX28) #define TIMROT_ROTCTRL_SELECT_A_PWM5 0x6 #define TIMROT_ROTCTRL_SELECT_A_PWM6 0x7 #define TIMROT_ROTCTRL_SELECT_A_PWM7 0x8 #define TIMROT_ROTCTRL_SELECT_A_ROTARYA 0x9 #define TIMROT_ROTCTRL_SELECT_A_ROTARYB 0xa +#endif

#define TIMROT_ROTCOUNT_UPDOWN_MASK 0xffff #define TIMROT_ROTCOUNT_UPDOWN_OFFSET 0

#define TIMROT_TIMCTRLn_IRQ (1 << 15) #define TIMROT_TIMCTRLn_IRQ_EN (1 << 14) +#if defined(CONFIG_MX28) #define TIMROT_TIMCTRLn_MATCH_MODE (1 << 11) +#endif #define TIMROT_TIMCTRLn_POLARITY (1 << 8) #define TIMROT_TIMCTRLn_UPDATE (1 << 7) #define TIMROT_TIMCTRLn_RELOAD (1 << 6) @@ -121,6 +152,15 @@ struct mxs_timrot_regs { #define TIMROT_TIMCTRLn_SELECT_PWM2 0x3 #define TIMROT_TIMCTRLn_SELECT_PWM3 0x4 #define TIMROT_TIMCTRLn_SELECT_PWM4 0x5 +#if defined(CONFIG_MX23) +#define TIMROT_TIMCTRLn_SELECT_ROTARYA 0x6 +#define TIMROT_TIMCTRLn_SELECT_ROTARYB 0x7 +#define TIMROT_TIMCTRLn_SELECT_32KHZ_XTAL 0x8 +#define TIMROT_TIMCTRLn_SELECT_8KHZ_XTAL 0x9 +#define TIMROT_TIMCTRLn_SELECT_4KHZ_XTAL 0xa +#define TIMROT_TIMCTRLn_SELECT_1KHZ_XTAL 0xb +#define TIMROT_TIMCTRLn_SELECT_TICK_ALWAYS 0xc +#elif defined(CONFIG_MX28) #define TIMROT_TIMCTRLn_SELECT_PWM5 0x6 #define TIMROT_TIMCTRLn_SELECT_PWM6 0x7 #define TIMROT_TIMCTRLn_SELECT_PWM7 0x8 @@ -131,15 +171,28 @@ struct mxs_timrot_regs { #define TIMROT_TIMCTRLn_SELECT_4KHZ_XTAL 0xd #define TIMROT_TIMCTRLn_SELECT_1KHZ_XTAL 0xe #define TIMROT_TIMCTRLn_SELECT_TICK_ALWAYS 0xf +#endif

+#if defined(CONFIG_MX23) +#define TIMROT_RUNNING_COUNTn_RUNNING_COUNT_MASK (0xffff << 16) +#define TIMROT_RUNNING_COUNTn_RUNNING_COUNT_OFFSET 16 +#elif defined(CONFIG_MX28) #define TIMROT_RUNNING_COUNTn_RUNNING_COUNT_MASK 0xffffffff #define TIMROT_RUNNING_COUNTn_RUNNING_COUNT_OFFSET 0 +#endif

+#if defined(CONFIG_MX23) +#define TIMROT_FIXED_COUNTn_FIXED_COUNT_MASK 0xffff +#define TIMROT_FIXED_COUNTn_FIXED_COUNT_OFFSET 0 +#elif defined(CONFIG_MX28) #define TIMROT_FIXED_COUNTn_FIXED_COUNT_MASK 0xffffffff #define TIMROT_FIXED_COUNTn_FIXED_COUNT_OFFSET 0 +#endif

+#if defined(CONFIG_MX28) #define TIMROT_MATCH_COUNTn_MATCH_COUNT_MASK 0xffffffff #define TIMROT_MATCH_COUNTn_MATCH_COUNT_OFFSET 0 +#endif

#define TIMROT_TIMCTRL3_TEST_SIGNAL_MASK (0xf << 16) #define TIMROT_TIMCTRL3_TEST_SIGNAL_OFFSET 16 @@ -149,6 +202,15 @@ struct mxs_timrot_regs { #define TIMROT_TIMCTRL3_TEST_SIGNAL_PWM2 (0x3 << 16) #define TIMROT_TIMCTRL3_TEST_SIGNAL_PWM3 (0x4 << 16) #define TIMROT_TIMCTRL3_TEST_SIGNAL_PWM4 (0x5 << 16) +#if defined(CONFIG_MX23) +#define TIMROT_TIMCTRL3_TEST_SIGNAL_ROTARYA (0x6 << 16) +#define TIMROT_TIMCTRL3_TEST_SIGNAL_ROTARYB (0x7 << 16) +#define TIMROT_TIMCTRL3_TEST_SIGNAL_32KHZ_XTAL (0x8 << 16) +#define TIMROT_TIMCTRL3_TEST_SIGNAL_8KHZ_XTAL (0x9 << 16) +#define TIMROT_TIMCTRL3_TEST_SIGNAL_4KHZ_XTAL (0xa << 16) +#define TIMROT_TIMCTRL3_TEST_SIGNAL_1KHZ_XTAL (0xb << 16) +#define TIMROT_TIMCTRL3_TEST_SIGNAL_TICK_ALWAYS (0xc << 16) +#elif defined(CONFIG_MX28) #define TIMROT_TIMCTRL3_TEST_SIGNAL_PWM5 (0x6 << 16) #define TIMROT_TIMCTRL3_TEST_SIGNAL_PWM6 (0x7 << 16) #define TIMROT_TIMCTRL3_TEST_SIGNAL_PWM7 (0x8 << 16) @@ -159,7 +221,46 @@ struct mxs_timrot_regs { #define TIMROT_TIMCTRL3_TEST_SIGNAL_4KHZ_XTAL (0xd << 16) #define TIMROT_TIMCTRL3_TEST_SIGNAL_1KHZ_XTAL (0xe << 16) #define TIMROT_TIMCTRL3_TEST_SIGNAL_TICK_ALWAYS (0xf << 16) +#endif +#if defined(CONFIG_MX23) +#define TIMROT_TIMCTRL3_IRQ (1 << 15) +#define TIMROT_TIMCTRL3_IRQ_EN (1 << 14) +#define TIMROT_TIMCTRL3_DUTU_VALID (1 << 10) +#endif #define TIMROT_TIMCTRL3_DUTY_CYCLE (1 << 9) +#if defined(CONFIG_MX23) +#define TIMROT_TIMCTRL3_POLARITY_MASK (0x1 << 8) +#define TIMROT_TIMCTRL3_POLARITY_OFFSET 8 +#define TIMROT_TIMCTRL3_POLARITY_POSITIVE (0x0 << 8) +#define TIMROT_TIMCTRL3_POLARITY_NEGATIVE (0x1 << 8) +#define TIMROT_TIMCTRL3_UPDATE (1 << 7) +#define TIMROT_TIMCTRL3_RELOAD (1 << 6) +#define TIMROT_TIMCTRL3_PRESCALE_MASK (0x3 << 4) +#define TIMROT_TIMCTRL3_PRESCALE_OFFSET 4 +#define TIMROT_TIMCTRL3_PRESCALE_DIV_BY_1 (0x0 << 4) +#define TIMROT_TIMCTRL3_PRESCALE_DIV_BY_2 (0x1 << 4) +#define TIMROT_TIMCTRL3_PRESCALE_DIV_BY_4 (0x2 << 4) +#define TIMROT_TIMCTRL3_PRESCALE_DIV_BY_8 (0x3 << 4) +#define TIMROT_TIMCTRL3_SELECT_MASK 0xf +#define TIMROT_TIMCTRL3_SELECT_OFFSET 0 +#define TIMROT_TIMCTRL3_SELECT_NEVER_TICK 0x0 +#define TIMROT_TIMCTRL3_SELECT_PWM0 0x1 +#define TIMROT_TIMCTRL3_SELECT_PWM1 0x2 +#define TIMROT_TIMCTRL3_SELECT_PWM2 0x3 +#define TIMROT_TIMCTRL3_SELECT_PWM3 0x4 +#define TIMROT_TIMCTRL3_SELECT_PWM4 0x5 +#define TIMROT_TIMCTRL3_SELECT_ROTARYA 0x6 +#define TIMROT_TIMCTRL3_SELECT_ROTARYB 0x7 +#define TIMROT_TIMCTRL3_SELECT_32KHZ_XTAL 0x8 +#define TIMROT_TIMCTRL3_SELECT_8KHZ_XTAL 0x9 +#define TIMROT_TIMCTRL3_SELECT_4KHZ_XTAL 0xa +#define TIMROT_TIMCTRL3_SELECT_1KHZ_XTAL 0xb +#define TIMROT_TIMCTRL3_SELECT_TICK_ALWAYS 0xc +#define TIMROT_TIMCOUNT3_LOW_RUNNING_COUNT_MASK (0xffff << 16) +#define TIMROT_TIMCOUNT3_LOW_RUNNING_COUNT_OFFSET 16 +#define TIMROT_TIMCOUNT3_HIGH_FIXED_COUNT_MASK 0xffff +#define TIMROT_TIMCOUNT3_HIGH_FIXED_COUNT_OFFSET 0 +#endif

#define TIMROT_VERSION_MAJOR_MASK (0xff << 24) #define TIMROT_VERSION_MAJOR_OFFSET 24