From f9d43072e25715911b3ef7594132e4f87ead8ba0 Mon Sep 17 00:00:00 2001 From: balrog Date: Tue, 20 Nov 2007 11:15:27 +0000 Subject: [PATCH] OMAP LPGs (LED pulse generators). OMAP MPUI bridge config register. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3710 c046a42c-6fe2-441c-8c8c-71466251a162 --- hw/omap.c | 186 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- hw/omap.h | 5 ++ 2 files changed, 189 insertions(+), 2 deletions(-) diff --git a/hw/omap.c b/hw/omap.c index 662332b..a873b5f 100644 --- a/hw/omap.c +++ b/hw/omap.c @@ -4626,6 +4626,184 @@ void omap_mcbsp_i2s_attach(struct omap_mcbsp_s *s, struct i2s_codec_s *slave) slave->tx_start = qemu_allocate_irqs(omap_mcbsp_i2s_start, s, 1)[0]; } +/* LED Pulse Generators */ +struct omap_lpg_s { + target_phys_addr_t base; + QEMUTimer *tm; + + uint8_t control; + uint8_t power; + int64_t on; + int64_t period; + int clk; + int cycle; +}; + +static void omap_lpg_tick(void *opaque) +{ + struct omap_lpg_s *s = opaque; + + if (s->cycle) + qemu_mod_timer(s->tm, qemu_get_clock(rt_clock) + s->period - s->on); + else + qemu_mod_timer(s->tm, qemu_get_clock(rt_clock) + s->on); + + s->cycle = !s->cycle; + printf("%s: LED is %s\n", __FUNCTION__, s->cycle ? "on" : "off"); +} + +static void omap_lpg_update(struct omap_lpg_s *s) +{ + int64_t on, period = 1, ticks = 1000; + static const int per[8] = { 1, 2, 4, 8, 12, 16, 20, 24 }; + + if (~s->control & (1 << 6)) /* LPGRES */ + on = 0; + else if (s->control & (1 << 7)) /* PERM_ON */ + on = period; + else { + period = muldiv64(ticks, per[s->control & 7], /* PERCTRL */ + 256 / 32); + on = (s->clk && s->power) ? muldiv64(ticks, + per[(s->control >> 3) & 7], 256) : 0; /* ONCTRL */ + } + + qemu_del_timer(s->tm); + if (on == period && s->on < s->period) + printf("%s: LED is on\n", __FUNCTION__); + else if (on == 0 && s->on) + printf("%s: LED is off\n", __FUNCTION__); + else if (on && (on != s->on || period != s->period)) { + s->cycle = 0; + s->on = on; + s->period = period; + omap_lpg_tick(s); + return; + } + + s->on = on; + s->period = period; +} + +static void omap_lpg_reset(struct omap_lpg_s *s) +{ + s->control = 0x00; + s->power = 0x00; + s->clk = 1; + omap_lpg_update(s); +} + +static uint32_t omap_lpg_read(void *opaque, target_phys_addr_t addr) +{ + struct omap_lpg_s *s = (struct omap_lpg_s *) opaque; + int offset = addr & OMAP_MPUI_REG_MASK; + + switch (offset) { + case 0x00: /* LCR */ + return s->control; + + case 0x04: /* PMR */ + return s->power; + } + + OMAP_BAD_REG(addr); + return 0; +} + +static void omap_lpg_write(void *opaque, target_phys_addr_t addr, + uint32_t value) +{ + struct omap_lpg_s *s = (struct omap_lpg_s *) opaque; + int offset = addr & OMAP_MPUI_REG_MASK; + + switch (offset) { + case 0x00: /* LCR */ + if (~value & (1 << 6)) /* LPGRES */ + omap_lpg_reset(s); + s->control = value & 0xff; + omap_lpg_update(s); + return; + + case 0x04: /* PMR */ + s->power = value & 0x01; + omap_lpg_update(s); + return; + + default: + OMAP_BAD_REG(addr); + return; + } +} + +static CPUReadMemoryFunc *omap_lpg_readfn[] = { + omap_lpg_read, + omap_badwidth_read8, + omap_badwidth_read8, +}; + +static CPUWriteMemoryFunc *omap_lpg_writefn[] = { + omap_lpg_write, + omap_badwidth_write8, + omap_badwidth_write8, +}; + +static void omap_lpg_clk_update(void *opaque, int line, int on) +{ + struct omap_lpg_s *s = (struct omap_lpg_s *) opaque; + + s->clk = on; + omap_lpg_update(s); +} + +struct omap_lpg_s *omap_lpg_init(target_phys_addr_t base, omap_clk clk) +{ + int iomemtype; + struct omap_lpg_s *s = (struct omap_lpg_s *) + qemu_mallocz(sizeof(struct omap_lpg_s)); + + s->base = base; + s->tm = qemu_new_timer(rt_clock, omap_lpg_tick, s); + + omap_lpg_reset(s); + + iomemtype = cpu_register_io_memory(0, omap_lpg_readfn, + omap_lpg_writefn, s); + cpu_register_physical_memory(s->base, 0x800, iomemtype); + + omap_clk_adduser(clk, qemu_allocate_irqs(omap_lpg_clk_update, s, 1)[0]); + + return s; +} + +/* MPUI Peripheral Bridge configuration */ +static uint32_t omap_mpui_io_read(void *opaque, target_phys_addr_t addr) +{ + if (addr == OMAP_MPUI_BASE) /* CMR */ + return 0xfe4d; + + OMAP_BAD_REG(addr); + return 0; +} + +static CPUReadMemoryFunc *omap_mpui_io_readfn[] = { + omap_badwidth_read16, + omap_mpui_io_read, + omap_badwidth_read16, +}; + +static CPUWriteMemoryFunc *omap_mpui_io_writefn[] = { + omap_badwidth_write16, + omap_badwidth_write16, + omap_badwidth_write16, +}; + +static void omap_setup_mpui_io(struct omap_mpu_state_s *mpu) +{ + int iomemtype = cpu_register_io_memory(0, omap_mpui_io_readfn, + omap_mpui_io_writefn, mpu); + cpu_register_physical_memory(OMAP_MPUI_BASE, 0x7fff, iomemtype); +} + /* General chip reset */ static void omap_mpu_reset(void *opaque) { @@ -4663,6 +4841,8 @@ static void omap_mpu_reset(void *opaque) omap_mcbsp_reset(mpu->mcbsp1); omap_mcbsp_reset(mpu->mcbsp2); omap_mcbsp_reset(mpu->mcbsp3); + omap_lpg_reset(mpu->led[0]); + omap_lpg_reset(mpu->led[1]); cpu_reset(mpu->env); } @@ -4846,6 +5026,9 @@ struct omap_mpu_state_s *omap310_mpu_init(unsigned long sdram_size, s->mcbsp3 = omap_mcbsp_init(0xfffb7000, &s->irq[1][OMAP_INT_McBSP3TX], &s->drq[OMAP_DMA_MCBSP3_TX], omap_findclk(s, "dspxor_ck")); + s->led[0] = omap_lpg_init(0xfffbd000, omap_findclk(s, "clk32-kHz")); + s->led[1] = omap_lpg_init(0xfffbd800, omap_findclk(s, "clk32-kHz")); + /* Register mappings not currenlty implemented: * MCSI2 Comm fffb2000 - fffb27ff (not mapped on OMAP310) * MCSI1 Bluetooth fffb2800 - fffb2fff (not mapped on OMAP310) @@ -4855,8 +5038,6 @@ struct omap_mpu_state_s *omap310_mpu_init(unsigned long sdram_size, * FAC fffba800 - fffbafff * HDQ/1-Wire fffbc000 - fffbc7ff * TIPB switches fffbc800 - fffbcfff - * LED1 fffbd000 - fffbd7ff - * LED2 fffbd800 - fffbdfff * Mailbox fffcf000 - fffcf7ff * Local bus IF fffec100 - fffec1ff * Local bus MMU fffec200 - fffec2ff @@ -4864,6 +5045,7 @@ struct omap_mpu_state_s *omap310_mpu_init(unsigned long sdram_size, */ omap_setup_dsp_mapping(omap15xx_dsp_mm); + omap_setup_mpui_io(s); qemu_register_reset(omap_mpu_reset, s); diff --git a/hw/omap.h b/hw/omap.h index e58fb3c..7d189d6 100644 --- a/hw/omap.h +++ b/hw/omap.h @@ -508,6 +508,9 @@ struct omap_mcbsp_s *omap_mcbsp_init(target_phys_addr_t base, qemu_irq *irq, qemu_irq *dma, omap_clk clk); void omap_mcbsp_i2s_attach(struct omap_mcbsp_s *s, struct i2s_codec_s *slave); +struct omap_lpg_s; +struct omap_lpg_s *omap_lpg_init(target_phys_addr_t base, omap_clk clk); + /* omap_lcdc.c */ struct omap_lcd_panel_s; void omap_lcdc_reset(struct omap_lcd_panel_s *s); @@ -598,6 +601,8 @@ struct omap_mpu_state_s { struct omap_mcbsp_s *mcbsp2; + struct omap_lpg_s *led[2]; + /* MPU private TIPB peripherals */ struct omap_intr_handler_s *ih[2]; -- 2.7.4