static void iommu_disable(struct iommu *obj)
{
u32 reg;
if (!obj)
return;
if (cpu_is_omap44xx() && !strcmp(obj->name, "ducati")) {
reg = prm_read_mod_reg(OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET);
prm_write_mod_reg((reg | RM_M3_RST1ST | RM_M3_RST2ST),
OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET);
}
if (cpu_is_omap44xx() && !strcmp(obj->name, "tesla")) {
reg = prm_read_mod_reg(OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET);
prm_write_mod_reg((reg | RM_TESLA_RST1ST),
OMAP4430_PRM_CORE_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET);
}
if (!cpu_is_omap44xx())
clk_enable(obj->clk);
arch_iommu->disable(obj);
if (!cpu_is_omap44xx())
clk_disable(obj->clk);
if (cpu_is_omap44xx() && !strcmp(obj->name, "ducati")) {
pr_info("iommu_disable: Ducati Assert RST1, RST2 and RST3\n");
reg = prm_read_mod_reg(OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET);
prm_write_mod_reg((reg | RM_M3_MPU_ALL_RESETS),
OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET);
pr_info("iommu_disable: Ducati Reset Status RSTST = 0x%x\n",
prm_read_mod_reg(OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTST_OFFSET));
}
if (cpu_is_omap44xx() && !strcmp(obj->name, "tesla")) {
pr_info("iommu_disable: Tesla Assert DSP RST1 and RST2\n");
reg = prm_read_mod_reg(OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET);
prm_write_mod_reg((reg | RM_TESLA_ALL_RESETS),
OMAP4430_PRM_CORE_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET);
pr_info("iommu_disable: Tesla Reset Status RSTST = 0x%x\n",
prm_read_mod_reg(OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTST_OFFSET));
}
}
/*
* PRCM Interrupt Handler Helper Function
*
* The purpose of this function is to clear any wake-up events latched
* in the PRCM PM_WKST_x registers. It is possible that a wake-up event
* may occur whilst attempting to clear a PM_WKST_x register and thus
* set another bit in this register. A while loop is used to ensure
* that any peripheral wake-up events occurring while attempting to
* clear the PM_WKST_x are detected and cleared.
*/
static int prcm_clear_mod_irqs(s16 module, u8 regs)
{
u32 wkst, fclk, iclk, clken;
u16 wkst_off = (regs == 3) ? OMAP3430ES2_PM_WKST3 : PM_WKST1;
u16 fclk_off = (regs == 3) ? OMAP3430ES2_CM_FCLKEN3 : CM_FCLKEN1;
u16 iclk_off = (regs == 3) ? CM_ICLKEN3 : CM_ICLKEN1;
u16 grpsel_off = (regs == 3) ?
OMAP3430ES2_PM_MPUGRPSEL3 : OMAP3430_PM_MPUGRPSEL;
int c = 0;
wkst = prm_read_mod_reg(module, wkst_off);
wkst &= prm_read_mod_reg(module, grpsel_off);
if (wkst) {
iclk = cm_read_mod_reg(module, iclk_off);
fclk = cm_read_mod_reg(module, fclk_off);
while (wkst) {
clken = wkst;
cm_set_mod_reg_bits(clken, module, iclk_off);
/*
* For USBHOST, we don't know whether HOST1 or
* HOST2 woke us up, so enable both f-clocks
*/
if (module == OMAP3430ES2_USBHOST_MOD)
clken |= 1 << OMAP3430ES2_EN_USBHOST2_SHIFT;
cm_set_mod_reg_bits(clken, module, fclk_off);
prm_write_mod_reg(wkst, module, wkst_off);
wkst = prm_read_mod_reg(module, wkst_off);
c++;
}
cm_write_mod_reg(iclk, module, iclk_off);
cm_write_mod_reg(fclk, module, fclk_off);
}
return c;
}
static void omap2_enter_mpu_retention(void)
{
int only_idle = 0;
struct timespec ts_preidle, ts_postidle, ts_idle;
/* Putting MPU into the WFI state while a transfer is active
* seems to cause the I2C block to timeout. Why? Good question. */
if (omap2_i2c_active())
return;
/* The peripherals seem not to be able to wake up the MPU when
* it is in retention mode. */
if (omap2_allow_mpu_retention()) {
/* REVISIT: These write to reserved bits? */
prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST);
/* Try to enter MPU retention */
prm_write_mod_reg((0x01 << OMAP_POWERSTATE_SHIFT) |
OMAP_LOGICRETSTATE_MASK,
MPU_MOD, OMAP2_PM_PWSTCTRL);
} else {
/* Block MPU retention */
prm_write_mod_reg(OMAP_LOGICRETSTATE_MASK, MPU_MOD,
OMAP2_PM_PWSTCTRL);
only_idle = 1;
}
if (omap2_pm_debug) {
omap2_pm_dump(only_idle ? 2 : 1, 0, 0);
getnstimeofday(&ts_preidle);
}
omap2_sram_idle();
if (omap2_pm_debug) {
unsigned long long tmp;
getnstimeofday(&ts_postidle);
ts_idle = timespec_sub(ts_postidle, ts_preidle);
tmp = timespec_to_ns(&ts_idle) * NSEC_PER_USEC;
omap2_pm_dump(only_idle ? 2 : 1, 1, tmp);
}
}
static void omap2_enter_mpu_retention(void)
{
u32 sleep_time = 0;
int only_idle = 0;
/* Putting MPU into the WFI state while a transfer is active
* seems to cause the I2C block to timeout. Why? Good question. */
if (omap2_i2c_active())
return;
/* The peripherals seem not to be able to wake up the MPU when
* it is in retention mode. */
if (omap2_allow_mpu_retention()) {
/* REVISIT: These write to reserved bits? */
prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST);
/* Try to enter MPU retention */
prm_write_mod_reg((0x01 << OMAP_POWERSTATE_SHIFT) |
OMAP_LOGICRETSTATE,
MPU_MOD, PM_PWSTCTRL);
} else {
/* Block MPU retention */
prm_write_mod_reg(OMAP_LOGICRETSTATE, MPU_MOD, PM_PWSTCTRL);
only_idle = 1;
}
if (omap2_pm_debug) {
omap2_pm_dump(only_idle ? 2 : 1, 0, 0);
sleep_time = omap2_read_32k_sync_counter();
}
omap2_sram_idle();
if (omap2_pm_debug) {
unsigned long long tmp;
u32 resume_time;
resume_time = omap2_read_32k_sync_counter();
tmp = resume_time - sleep_time;
tmp *= 1000000;
omap2_pm_dump(only_idle ? 2 : 1, 1, tmp / 32768);
}
}
static int omap2_pm_suspend(void)
{
u32 wken_wkup, mir1;
wken_wkup = prm_read_mod_reg(WKUP_MOD, PM_WKEN);
prm_write_mod_reg(wken_wkup & ~OMAP24XX_EN_GPT1, WKUP_MOD, PM_WKEN);
/* Mask GPT1 */
mir1 = omap_readl(0x480fe0a4);
omap_writel(1 << 5, 0x480fe0ac);
omap2_enter_full_retention();
omap_writel(mir1, 0x480fe0a4);
prm_write_mod_reg(wken_wkup, WKUP_MOD, PM_WKEN);
return 0;
}
static void pm_init_serial_console(void)
{
const struct omap_serial_console_config *conf;
char name[16];
u32 l;
conf = omap_get_config(OMAP_TAG_SERIAL_CONSOLE,
struct omap_serial_console_config);
if (conf == NULL)
return;
if (conf->console_uart > 3 || conf->console_uart < 1)
return;
serial_console_uart = conf->console_uart;
sprintf(name, "uart%d_fck", conf->console_uart);
console_fclk = clk_get(NULL, name);
if (IS_ERR(console_fclk))
console_fclk = NULL;
name[6] = 'i';
console_iclk = clk_get(NULL, name);
if (IS_ERR(console_fclk))
console_iclk = NULL;
if (console_fclk == NULL || console_iclk == NULL) {
serial_console_uart = 0;
return;
}
switch (serial_console_uart) {
case 1:
l = prm_read_mod_reg(CORE_MOD, PM_WKEN1);
l |= OMAP24XX_ST_UART1;
prm_write_mod_reg(l, CORE_MOD, PM_WKEN1);
break;
case 2:
l = prm_read_mod_reg(CORE_MOD, PM_WKEN1);
l |= OMAP24XX_ST_UART2;
prm_write_mod_reg(l, CORE_MOD, PM_WKEN1);
break;
case 3:
l = prm_read_mod_reg(CORE_MOD, OMAP24XX_PM_WKEN2);
l |= OMAP24XX_ST_UART3;
prm_write_mod_reg(l, CORE_MOD, OMAP24XX_PM_WKEN2);
break;
}
}
/* Read-modify-write a register in a PRM module. Caller must lock */
u32 prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
{
u32 v;
v = prm_read_mod_reg(module, idx);
v &= ~mask;
v |= bits;
prm_write_mod_reg(v, module, idx);
return v;
}
int omap4_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
{
u32 reg;
prm_rmw_mod_reg_bits(OMAP4430_LASTPOWERSTATEENTERED_MASK,
0x3 << OMAP4430_LASTPOWERSTATEENTERED_SHIFT,
pwrdm->prcm_offs, OMAP4_PM_PWSTST);
reg = prm_read_mod_reg(pwrdm->prcm_offs, pwrdm->context_offset);
prm_write_mod_reg(reg, pwrdm->prcm_offs, pwrdm->context_offset);
return 0;
}
/**
* _omap2xxx_clk_commit - commit clock parent/rate changes in hardware
* @clk: struct clk *
*
* If @clk has the DELAYED_APP flag set, meaning that parent/rate changes
* don't take effect until the VALID_CONFIG bit is written, write the
* VALID_CONFIG bit and wait for the write to complete. No return value.
*/
static void _omap2xxx_clk_commit(struct clk *clk)
{
if (!cpu_is_omap24xx())
return;
if (!(clk->flags & DELAYED_APP))
return;
prm_write_mod_reg(OMAP24XX_VALID_CONFIG, OMAP24XX_GR_MOD,
OMAP2_PRCM_CLKCFG_CTRL_OFFSET);
/* OCP barrier */
prm_read_mod_reg(OMAP24XX_GR_MOD, OMAP2_PRCM_CLKCFG_CTRL_OFFSET);
}
static int prcm_wakeup_event_control ( u32 reg_bit, u8 operation )
{
volatile u32 prcm_val=0;
prcm_val = prm_read_mod_reg( WKUP_MOD, PM_WKEN1 );
if ( operation )
prcm_val = prcm_val | reg_bit;
else
prcm_val = prcm_val & ~reg_bit;
prm_write_mod_reg( prcm_val, WKUP_MOD, PM_WKEN1 );
return 0;
}
/*
* PRCM Interrupt Handler
*
* The PRM_IRQSTATUS_MPU register indicates if there are any pending
* interrupts from the PRCM for the MPU. These bits must be cleared in
* order to clear the PRCM interrupt. The PRCM interrupt handler is
* implemented to simply clear the PRM_IRQSTATUS_MPU in order to clear
* the PRCM interrupt. Please note that bit 0 of the PRM_IRQSTATUS_MPU
* register indicates that a wake-up event is pending for the MPU and
* this bit can only be cleared if the all the wake-up events latched
* in the various PM_WKST_x registers have been cleared. The interrupt
* handler is implemented using a do-while loop so that if a wake-up
* event occurred during the processing of the prcm interrupt handler
* (setting a bit in the corresponding PM_WKST_x register and thus
* preventing us from clearing bit 0 of the PRM_IRQSTATUS_MPU register)
* this would be handled.
*/
static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id)
{
u32 irqenable_mpu, irqstatus_mpu;
int c = 0;
int ct = 0;
irqenable_mpu = prm_read_mod_reg(OCP_MOD,
OMAP3_PRM_IRQENABLE_MPU_OFFSET);
irqstatus_mpu = prm_read_mod_reg(OCP_MOD,
OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
irqstatus_mpu &= irqenable_mpu;
do {
if (irqstatus_mpu & (OMAP3430_WKUP_ST_MASK |
OMAP3430_IO_ST_MASK)) {
c = _prcm_int_handle_wakeup();
ct++;
/*
* Is the MPU PRCM interrupt handler racing with the
* IVA2 PRCM interrupt handler ?
*/
WARN(!c && (ct == 1), "prcm: WARNING: PRCM indicated "
"MPU wakeup but no wakeup sources are "
"marked\n");
} else {
/* XXX we need to expand our PRCM interrupt handler */
WARN(1, "prcm: WARNING: PRCM interrupt received, but "
"no code to handle it (%08x)\n", irqstatus_mpu);
}
prm_write_mod_reg(irqstatus_mpu, OCP_MOD,
OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
irqstatus_mpu = prm_read_mod_reg(OCP_MOD,
OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
irqstatus_mpu &= irqenable_mpu;
} while (irqstatus_mpu);
return IRQ_HANDLED;
}
/* Read-modify-write a register in a PRM module. Caller must lock */
u32 prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
{
u32 v;
/* CHIRON CPU0/1 domains are not part of PRM */
if (cpu_is_omap44xx() &&
((module == OMAP4430_CHIRONSS_CHIRONSS_CPU0_MOD) ||
(module == OMAP4430_CHIRONSS_CHIRONSS_CPU1_MOD)))
v = chiron_read_mod_reg(module, idx);
else
v = prm_read_mod_reg(module, idx);
v &= ~mask;
v |= bits;
if (cpu_is_omap44xx() &&
((module == OMAP4430_CHIRONSS_CHIRONSS_CPU0_MOD) ||
(module == OMAP4430_CHIRONSS_CHIRONSS_CPU1_MOD)))
chiron_write_mod_reg(v, module, idx);
else
prm_write_mod_reg(v, module, idx);
return v;
}
static void omap2_enter_full_retention(void)
{
u32 l;
struct timespec ts_preidle, ts_postidle, ts_idle;
/* There is 1 reference hold for all children of the oscillator
* clock, the following will remove it. If no one else uses the
* oscillator itself it will be disabled if/when we enter retention
* mode.
*/
clk_disable(osc_ck);
/* Clear old wake-up events */
/* REVISIT: These write to reserved bits? */
prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST);
/*
* Set MPU powerdomain's next power state to RETENTION;
* preserve logic state during retention
*/
pwrdm_set_logic_retst(mpu_pwrdm, PWRDM_POWER_RET);
pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET);
/* Workaround to kill USB */
l = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0) | OMAP24XX_USBSTANDBYCTRL;
omap_ctrl_writel(l, OMAP2_CONTROL_DEVCONF0);
omap2_gpio_prepare_for_idle(PWRDM_POWER_RET);
if (omap2_pm_debug) {
omap2_pm_dump(0, 0, 0);
getnstimeofday(&ts_preidle);
}
/* One last check for pending IRQs to avoid extra latency due
* to sleeping unnecessarily. */
if (omap_irq_pending())
goto no_sleep;
omap_uart_prepare_idle(0);
omap_uart_prepare_idle(1);
omap_uart_prepare_idle(2);
/* Jump to SRAM suspend code */
omap2_sram_suspend(sdrc_read_reg(SDRC_DLLA_CTRL),
OMAP_SDRC_REGADDR(SDRC_DLLA_CTRL),
OMAP_SDRC_REGADDR(SDRC_POWER));
no_sleep:
omap_uart_resume_idle(2);
omap_uart_resume_idle(1);
omap_uart_resume_idle(0);
if (omap2_pm_debug) {
unsigned long long tmp;
getnstimeofday(&ts_postidle);
ts_idle = timespec_sub(ts_postidle, ts_preidle);
tmp = timespec_to_ns(&ts_idle) * NSEC_PER_USEC;
omap2_pm_dump(0, 1, tmp);
}
omap2_gpio_resume_after_idle();
clk_enable(osc_ck);
/* clear CORE wake-up events */
prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
/* wakeup domain events - bit 1: GPT1, bit5 GPIO */
prm_clear_mod_reg_bits(0x4 | 0x1, WKUP_MOD, PM_WKST);
/* MPU domain wake events */
l = prm_read_mod_reg(OCP_MOD, OMAP2_PRM_IRQSTATUS_MPU_OFFSET);
if (l & 0x01)
prm_write_mod_reg(0x01, OCP_MOD,
OMAP2_PRM_IRQSTATUS_MPU_OFFSET);
if (l & 0x20)
prm_write_mod_reg(0x20, OCP_MOD,
OMAP2_PRM_IRQSTATUS_MPU_OFFSET);
/* Mask future PRCM-to-MPU interrupts */
prm_write_mod_reg(0x0, OCP_MOD, OMAP2_PRM_IRQSTATUS_MPU_OFFSET);
}
static void __init prcm_setup_regs(void)
{
int i, num_mem_banks;
struct powerdomain *pwrdm;
/* Enable autoidle */
prm_write_mod_reg(OMAP24XX_AUTOIDLE, OCP_MOD,
OMAP24XX_PRM_SYSCONFIG_OFFSET);
/* Set all domain wakeup dependencies */
prm_write_mod_reg(OMAP_EN_WKUP_MASK, MPU_MOD, PM_WKDEP);
prm_write_mod_reg(0, OMAP24XX_DSP_MOD, PM_WKDEP);
prm_write_mod_reg(0, GFX_MOD, PM_WKDEP);
prm_write_mod_reg(0, CORE_MOD, PM_WKDEP);
if (cpu_is_omap2430())
prm_write_mod_reg(0, OMAP2430_MDM_MOD, PM_WKDEP);
/*
* Set CORE powerdomain memory banks to retain their contents
* during RETENTION
*/
num_mem_banks = pwrdm_get_mem_bank_count(core_pwrdm);
for (i = 0; i < num_mem_banks; i++)
pwrdm_set_mem_retst(core_pwrdm, i, PWRDM_POWER_RET);
/* Set CORE powerdomain's next power state to RETENTION */
pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_RET);
/*
* Set MPU powerdomain's next power state to RETENTION;
* preserve logic state during retention
*/
pwrdm_set_logic_retst(mpu_pwrdm, PWRDM_POWER_RET);
pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET);
/* Force-power down DSP, GFX powerdomains */
pwrdm = clkdm_get_pwrdm(dsp_clkdm);
pwrdm_set_next_pwrst(pwrdm, PWRDM_POWER_OFF);
omap2_clkdm_sleep(dsp_clkdm);
pwrdm = clkdm_get_pwrdm(gfx_clkdm);
pwrdm_set_next_pwrst(pwrdm, PWRDM_POWER_OFF);
omap2_clkdm_sleep(gfx_clkdm);
/* Enable clockdomain hardware-supervised control for all clkdms */
clkdm_for_each(_pm_clkdm_enable_hwsup, NULL);
/* Enable clock autoidle for all domains */
cm_write_mod_reg(OMAP24XX_AUTO_CAM |
OMAP24XX_AUTO_MAILBOXES |
OMAP24XX_AUTO_WDT4 |
OMAP2420_AUTO_WDT3 |
OMAP24XX_AUTO_MSPRO |
OMAP2420_AUTO_MMC |
OMAP24XX_AUTO_FAC |
OMAP2420_AUTO_EAC |
OMAP24XX_AUTO_HDQ |
OMAP24XX_AUTO_UART2 |
OMAP24XX_AUTO_UART1 |
OMAP24XX_AUTO_I2C2 |
OMAP24XX_AUTO_I2C1 |
OMAP24XX_AUTO_MCSPI2 |
OMAP24XX_AUTO_MCSPI1 |
OMAP24XX_AUTO_MCBSP2 |
OMAP24XX_AUTO_MCBSP1 |
OMAP24XX_AUTO_GPT12 |
OMAP24XX_AUTO_GPT11 |
OMAP24XX_AUTO_GPT10 |
OMAP24XX_AUTO_GPT9 |
OMAP24XX_AUTO_GPT8 |
OMAP24XX_AUTO_GPT7 |
OMAP24XX_AUTO_GPT6 |
OMAP24XX_AUTO_GPT5 |
OMAP24XX_AUTO_GPT4 |
OMAP24XX_AUTO_GPT3 |
OMAP24XX_AUTO_GPT2 |
OMAP2420_AUTO_VLYNQ |
OMAP24XX_AUTO_DSS,
CORE_MOD, CM_AUTOIDLE1);
cm_write_mod_reg(OMAP24XX_AUTO_UART3 |
OMAP24XX_AUTO_SSI |
OMAP24XX_AUTO_USB,
CORE_MOD, CM_AUTOIDLE2);
cm_write_mod_reg(OMAP24XX_AUTO_SDRC |
OMAP24XX_AUTO_GPMC |
OMAP24XX_AUTO_SDMA,
CORE_MOD, CM_AUTOIDLE3);
cm_write_mod_reg(OMAP24XX_AUTO_PKA |
OMAP24XX_AUTO_AES |
OMAP24XX_AUTO_RNG |
OMAP24XX_AUTO_SHA |
OMAP24XX_AUTO_DES,
CORE_MOD, OMAP24XX_CM_AUTOIDLE4);
cm_write_mod_reg(OMAP2420_AUTO_DSP_IPI, OMAP24XX_DSP_MOD, CM_AUTOIDLE);
/* Put DPLL and both APLLs into autoidle mode */
cm_write_mod_reg((0x03 << OMAP24XX_AUTO_DPLL_SHIFT) |
(0x03 << OMAP24XX_AUTO_96M_SHIFT) |
(0x03 << OMAP24XX_AUTO_54M_SHIFT),
PLL_MOD, CM_AUTOIDLE);
cm_write_mod_reg(OMAP24XX_AUTO_OMAPCTRL |
OMAP24XX_AUTO_WDT1 |
OMAP24XX_AUTO_MPU_WDT |
OMAP24XX_AUTO_GPIOS |
OMAP24XX_AUTO_32KSYNC |
OMAP24XX_AUTO_GPT1,
WKUP_MOD, CM_AUTOIDLE);
/* REVISIT: Configure number of 32 kHz clock cycles for sys_clk
* stabilisation */
prm_write_mod_reg(15 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD,
OMAP24XX_PRCM_CLKSSETUP_OFFSET);
/* Configure automatic voltage transition */
prm_write_mod_reg(2 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD,
OMAP24XX_PRCM_VOLTSETUP_OFFSET);
prm_write_mod_reg(OMAP24XX_AUTO_EXTVOLT |
(0x1 << OMAP24XX_SETOFF_LEVEL_SHIFT) |
OMAP24XX_MEMRETCTRL |
(0x1 << OMAP24XX_SETRET_LEVEL_SHIFT) |
(0x0 << OMAP24XX_VOLT_LEVEL_SHIFT),
OMAP24XX_GR_MOD, OMAP24XX_PRCM_VOLTCTRL_OFFSET);
/* Enable wake-up events */
prm_write_mod_reg(OMAP24XX_EN_GPIOS | OMAP24XX_EN_GPT1,
WKUP_MOD, PM_WKEN);
}
void omap3_prcm_restore_context(void)
{
omap_ctrl_writel(prcm_context.control_padconf_sys_nirq,
OMAP343X_CONTROL_PADCONF_SYSNIRQ);
cm_write_mod_reg(prcm_context.iva2_cm_clksel1, OMAP3430_IVA2_MOD,
CM_CLKSEL1);
cm_write_mod_reg(prcm_context.iva2_cm_clksel2, OMAP3430_IVA2_MOD,
CM_CLKSEL2);
__raw_writel(prcm_context.cm_sysconfig, OMAP3430_CM_SYSCONFIG);
cm_write_mod_reg(prcm_context.sgx_cm_clksel, OMAP3430ES2_SGX_MOD,
CM_CLKSEL);
cm_write_mod_reg(prcm_context.dss_cm_clksel, OMAP3430_DSS_MOD,
CM_CLKSEL);
cm_write_mod_reg(prcm_context.cam_cm_clksel, OMAP3430_CAM_MOD,
CM_CLKSEL);
cm_write_mod_reg(prcm_context.per_cm_clksel, OMAP3430_PER_MOD,
CM_CLKSEL);
cm_write_mod_reg(prcm_context.emu_cm_clksel, OMAP3430_EMU_MOD,
CM_CLKSEL1);
cm_write_mod_reg(prcm_context.emu_cm_clkstctrl, OMAP3430_EMU_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.pll_cm_autoidle2, PLL_MOD,
CM_AUTOIDLE2);
cm_write_mod_reg(prcm_context.pll_cm_clksel4, PLL_MOD,
OMAP3430ES2_CM_CLKSEL4);
cm_write_mod_reg(prcm_context.pll_cm_clksel5, PLL_MOD,
OMAP3430ES2_CM_CLKSEL5);
cm_write_mod_reg(prcm_context.pll_cm_clken2, PLL_MOD,
OMAP3430ES2_CM_CLKEN2);
__raw_writel(prcm_context.cm_polctrl, OMAP3430_CM_POLCTRL);
cm_write_mod_reg(prcm_context.iva2_cm_fclken, OMAP3430_IVA2_MOD,
CM_FCLKEN);
cm_write_mod_reg(prcm_context.iva2_cm_clken_pll, OMAP3430_IVA2_MOD,
OMAP3430_CM_CLKEN_PLL);
cm_write_mod_reg(prcm_context.core_cm_fclken1, CORE_MOD, CM_FCLKEN1);
cm_write_mod_reg(prcm_context.core_cm_fclken3, CORE_MOD,
OMAP3430ES2_CM_FCLKEN3);
cm_write_mod_reg(prcm_context.sgx_cm_fclken, OMAP3430ES2_SGX_MOD,
CM_FCLKEN);
cm_write_mod_reg(prcm_context.wkup_cm_fclken, WKUP_MOD, CM_FCLKEN);
cm_write_mod_reg(prcm_context.dss_cm_fclken, OMAP3430_DSS_MOD,
CM_FCLKEN);
cm_write_mod_reg(prcm_context.cam_cm_fclken, OMAP3430_CAM_MOD,
CM_FCLKEN);
cm_write_mod_reg(prcm_context.per_cm_fclken, OMAP3430_PER_MOD,
CM_FCLKEN);
cm_write_mod_reg(prcm_context.usbhost_cm_fclken,
OMAP3430ES2_USBHOST_MOD, CM_FCLKEN);
cm_write_mod_reg(prcm_context.core_cm_iclken1, CORE_MOD, CM_ICLKEN1);
cm_write_mod_reg(prcm_context.core_cm_iclken2, CORE_MOD, CM_ICLKEN2);
cm_write_mod_reg(prcm_context.core_cm_iclken3, CORE_MOD, CM_ICLKEN3);
cm_write_mod_reg(prcm_context.sgx_cm_iclken, OMAP3430ES2_SGX_MOD,
CM_ICLKEN);
cm_write_mod_reg(prcm_context.wkup_cm_iclken, WKUP_MOD, CM_ICLKEN);
cm_write_mod_reg(prcm_context.dss_cm_iclken, OMAP3430_DSS_MOD,
CM_ICLKEN);
cm_write_mod_reg(prcm_context.cam_cm_iclken, OMAP3430_CAM_MOD,
CM_ICLKEN);
cm_write_mod_reg(prcm_context.per_cm_iclken, OMAP3430_PER_MOD,
CM_ICLKEN);
cm_write_mod_reg(prcm_context.usbhost_cm_iclken,
OMAP3430ES2_USBHOST_MOD, CM_ICLKEN);
cm_write_mod_reg(prcm_context.iva2_cm_autiidle2, OMAP3430_IVA2_MOD,
CM_AUTOIDLE2);
cm_write_mod_reg(prcm_context.mpu_cm_autoidle2, MPU_MOD, CM_AUTOIDLE2);
cm_write_mod_reg(prcm_context.iva2_cm_clkstctrl, OMAP3430_IVA2_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.mpu_cm_clkstctrl, MPU_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.core_cm_clkstctrl, CORE_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.sgx_cm_clkstctrl, OMAP3430ES2_SGX_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.dss_cm_clkstctrl, OMAP3430_DSS_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.cam_cm_clkstctrl, OMAP3430_CAM_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.per_cm_clkstctrl, OMAP3430_PER_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.neon_cm_clkstctrl, OMAP3430_NEON_MOD,
OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.usbhost_cm_clkstctrl,
OMAP3430ES2_USBHOST_MOD, OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.core_cm_autoidle1, CORE_MOD,
CM_AUTOIDLE1);
cm_write_mod_reg(prcm_context.core_cm_autoidle2, CORE_MOD,
CM_AUTOIDLE2);
cm_write_mod_reg(prcm_context.core_cm_autoidle3, CORE_MOD,
CM_AUTOIDLE3);
cm_write_mod_reg(prcm_context.wkup_cm_autoidle, WKUP_MOD, CM_AUTOIDLE);
cm_write_mod_reg(prcm_context.dss_cm_autoidle, OMAP3430_DSS_MOD,
CM_AUTOIDLE);
cm_write_mod_reg(prcm_context.cam_cm_autoidle, OMAP3430_CAM_MOD,
CM_AUTOIDLE);
cm_write_mod_reg(prcm_context.per_cm_autoidle, OMAP3430_PER_MOD,
CM_AUTOIDLE);
cm_write_mod_reg(prcm_context.usbhost_cm_autoidle,
OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE);
cm_write_mod_reg(prcm_context.sgx_cm_sleepdep, OMAP3430ES2_SGX_MOD,
OMAP3430_CM_SLEEPDEP);
cm_write_mod_reg(prcm_context.dss_cm_sleepdep, OMAP3430_DSS_MOD,
OMAP3430_CM_SLEEPDEP);
cm_write_mod_reg(prcm_context.cam_cm_sleepdep, OMAP3430_CAM_MOD,
OMAP3430_CM_SLEEPDEP);
cm_write_mod_reg(prcm_context.per_cm_sleepdep, OMAP3430_PER_MOD,
OMAP3430_CM_SLEEPDEP);
cm_write_mod_reg(prcm_context.usbhost_cm_sleepdep,
OMAP3430ES2_USBHOST_MOD, OMAP3430_CM_SLEEPDEP);
cm_write_mod_reg(prcm_context.cm_clkout_ctrl, OMAP3430_CCR_MOD,
OMAP3_CM_CLKOUT_CTRL_OFFSET);
prm_write_mod_reg(prcm_context.prm_clkout_ctrl, OMAP3430_CCR_MOD,
OMAP3_PRM_CLKOUT_CTRL_OFFSET);
prm_write_mod_reg(prcm_context.sgx_pm_wkdep, OMAP3430ES2_SGX_MOD,
PM_WKDEP);
prm_write_mod_reg(prcm_context.dss_pm_wkdep, OMAP3430_DSS_MOD,
PM_WKDEP);
prm_write_mod_reg(prcm_context.cam_pm_wkdep, OMAP3430_CAM_MOD,
PM_WKDEP);
prm_write_mod_reg(prcm_context.per_pm_wkdep, OMAP3430_PER_MOD,
PM_WKDEP);
prm_write_mod_reg(prcm_context.neon_pm_wkdep, OMAP3430_NEON_MOD,
PM_WKDEP);
prm_write_mod_reg(prcm_context.usbhost_pm_wkdep,
OMAP3430ES2_USBHOST_MOD, PM_WKDEP);
prm_write_mod_reg(prcm_context.core_pm_mpugrpsel1, CORE_MOD,
OMAP3430_PM_MPUGRPSEL1);
prm_write_mod_reg(prcm_context.iva2_pm_ivagrpsel1, OMAP3430_IVA2_MOD,
OMAP3430_PM_IVAGRPSEL1);
prm_write_mod_reg(prcm_context.core_pm_mpugrpsel3, CORE_MOD,
OMAP3430ES2_PM_MPUGRPSEL3);
prm_write_mod_reg(prcm_context.core_pm_ivagrpsel3, CORE_MOD,
OMAP3430ES2_PM_IVAGRPSEL3);
prm_write_mod_reg(prcm_context.wkup_pm_mpugrpsel, WKUP_MOD,
OMAP3430_PM_MPUGRPSEL);
prm_write_mod_reg(prcm_context.wkup_pm_ivagrpsel, WKUP_MOD,
OMAP3430_PM_IVAGRPSEL);
prm_write_mod_reg(prcm_context.per_pm_mpugrpsel, OMAP3430_PER_MOD,
OMAP3430_PM_MPUGRPSEL);
prm_write_mod_reg(prcm_context.per_pm_ivagrpsel, OMAP3430_PER_MOD,
OMAP3430_PM_IVAGRPSEL);
prm_write_mod_reg(prcm_context.wkup_pm_wken, WKUP_MOD, PM_WKEN);
return;
}
static void __init prcm_setup_regs(void)
{
int i, num_mem_banks;
struct powerdomain *pwrdm;
/* Enable autoidle */
prm_write_mod_reg(OMAP24XX_AUTOIDLE_MASK, OCP_MOD,
OMAP2_PRCM_SYSCONFIG_OFFSET);
/*
* Set CORE powerdomain memory banks to retain their contents
* during RETENTION
*/
num_mem_banks = pwrdm_get_mem_bank_count(core_pwrdm);
for (i = 0; i < num_mem_banks; i++)
pwrdm_set_mem_retst(core_pwrdm, i, PWRDM_POWER_RET);
/* Set CORE powerdomain's next power state to RETENTION */
pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_RET);
/*
* Set MPU powerdomain's next power state to RETENTION;
* preserve logic state during retention
*/
pwrdm_set_logic_retst(mpu_pwrdm, PWRDM_POWER_RET);
pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET);
/* Force-power down DSP, GFX powerdomains */
pwrdm = clkdm_get_pwrdm(dsp_clkdm);
pwrdm_set_next_pwrst(pwrdm, PWRDM_POWER_OFF);
omap2_clkdm_sleep(dsp_clkdm);
pwrdm = clkdm_get_pwrdm(gfx_clkdm);
pwrdm_set_next_pwrst(pwrdm, PWRDM_POWER_OFF);
omap2_clkdm_sleep(gfx_clkdm);
/*
* Clear clockdomain wakeup dependencies and enable
* hardware-supervised idle for all clkdms
*/
clkdm_for_each(clkdms_setup, NULL);
clkdm_add_wkdep(mpu_clkdm, wkup_clkdm);
/* Enable clock autoidle for all domains */
cm_write_mod_reg(OMAP24XX_AUTO_CAM_MASK |
OMAP24XX_AUTO_MAILBOXES_MASK |
OMAP24XX_AUTO_WDT4_MASK |
OMAP2420_AUTO_WDT3_MASK |
OMAP24XX_AUTO_MSPRO_MASK |
OMAP2420_AUTO_MMC_MASK |
OMAP24XX_AUTO_FAC_MASK |
OMAP2420_AUTO_EAC_MASK |
OMAP24XX_AUTO_HDQ_MASK |
OMAP24XX_AUTO_UART2_MASK |
OMAP24XX_AUTO_UART1_MASK |
OMAP24XX_AUTO_I2C2_MASK |
OMAP24XX_AUTO_I2C1_MASK |
OMAP24XX_AUTO_MCSPI2_MASK |
OMAP24XX_AUTO_MCSPI1_MASK |
OMAP24XX_AUTO_MCBSP2_MASK |
OMAP24XX_AUTO_MCBSP1_MASK |
OMAP24XX_AUTO_GPT12_MASK |
OMAP24XX_AUTO_GPT11_MASK |
OMAP24XX_AUTO_GPT10_MASK |
OMAP24XX_AUTO_GPT9_MASK |
OMAP24XX_AUTO_GPT8_MASK |
OMAP24XX_AUTO_GPT7_MASK |
OMAP24XX_AUTO_GPT6_MASK |
OMAP24XX_AUTO_GPT5_MASK |
OMAP24XX_AUTO_GPT4_MASK |
OMAP24XX_AUTO_GPT3_MASK |
OMAP24XX_AUTO_GPT2_MASK |
OMAP2420_AUTO_VLYNQ_MASK |
OMAP24XX_AUTO_DSS_MASK,
CORE_MOD, CM_AUTOIDLE1);
cm_write_mod_reg(OMAP24XX_AUTO_UART3_MASK |
OMAP24XX_AUTO_SSI_MASK |
OMAP24XX_AUTO_USB_MASK,
CORE_MOD, CM_AUTOIDLE2);
cm_write_mod_reg(OMAP24XX_AUTO_SDRC_MASK |
OMAP24XX_AUTO_GPMC_MASK |
OMAP24XX_AUTO_SDMA_MASK,
CORE_MOD, CM_AUTOIDLE3);
cm_write_mod_reg(OMAP24XX_AUTO_PKA_MASK |
OMAP24XX_AUTO_AES_MASK |
OMAP24XX_AUTO_RNG_MASK |
OMAP24XX_AUTO_SHA_MASK |
OMAP24XX_AUTO_DES_MASK,
CORE_MOD, OMAP24XX_CM_AUTOIDLE4);
cm_write_mod_reg(OMAP2420_AUTO_DSP_IPI_MASK, OMAP24XX_DSP_MOD,
CM_AUTOIDLE);
/* Put DPLL and both APLLs into autoidle mode */
cm_write_mod_reg((0x03 << OMAP24XX_AUTO_DPLL_SHIFT) |
(0x03 << OMAP24XX_AUTO_96M_SHIFT) |
(0x03 << OMAP24XX_AUTO_54M_SHIFT),
PLL_MOD, CM_AUTOIDLE);
cm_write_mod_reg(OMAP24XX_AUTO_OMAPCTRL_MASK |
OMAP24XX_AUTO_WDT1_MASK |
OMAP24XX_AUTO_MPU_WDT_MASK |
OMAP24XX_AUTO_GPIOS_MASK |
OMAP24XX_AUTO_32KSYNC_MASK |
OMAP24XX_AUTO_GPT1_MASK,
WKUP_MOD, CM_AUTOIDLE);
/* REVISIT: Configure number of 32 kHz clock cycles for sys_clk
* stabilisation */
prm_write_mod_reg(15 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD,
OMAP2_PRCM_CLKSSETUP_OFFSET);
/* Configure automatic voltage transition */
prm_write_mod_reg(2 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD,
OMAP2_PRCM_VOLTSETUP_OFFSET);
prm_write_mod_reg(OMAP24XX_AUTO_EXTVOLT_MASK |
(0x1 << OMAP24XX_SETOFF_LEVEL_SHIFT) |
OMAP24XX_MEMRETCTRL_MASK |
(0x1 << OMAP24XX_SETRET_LEVEL_SHIFT) |
(0x0 << OMAP24XX_VOLT_LEVEL_SHIFT),
OMAP24XX_GR_MOD, OMAP2_PRCM_VOLTCTRL_OFFSET);
/* Enable wake-up events */
prm_write_mod_reg(OMAP24XX_EN_GPIOS_MASK | OMAP24XX_EN_GPT1_MASK,
WKUP_MOD, PM_WKEN);
}
static int iommu_enable(struct iommu *obj)
{
int err;
u32 reg;
if (!obj)
return -EINVAL;
if (cpu_is_omap44xx() && !strcmp(obj->name, "ducati")) {
/* Check that releasing resets would indeed be effective */
reg = prm_read_mod_reg(OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET);
pr_info("iommu_enable: OMAP4_RM_DUCATI_RSTCTRL_OFFSET = 0x%x",
reg);
if ((reg & RM_M3_MPU_ALL_RESETS) != RM_M3_MPU_ALL_RESETS) {
pr_info("iommu_enable: Ducati Resets in not proper "
"state!\n");
pr_info("iommu_enable: Ducati Asserting RST1, RST2, "
"and RST3...\n");
prm_write_mod_reg(RM_M3_MPU_ALL_RESETS,
OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET);
while (prm_read_mod_reg(OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET) !=
RM_M3_MPU_ALL_RESETS);
}
/* De-assert RST3, and clear the Reset status */
pr_info("iommu_enable: De-assert Ducati RST3\n");
reg = prm_read_mod_reg(OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET);
pr_info("iommu_enable: Ducati RSTCTRL = 0x%x\n", reg);
prm_write_mod_reg(RM_M3_REL_RST3_MASK, OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTCTRL_OFFSET);
while (!(prm_read_mod_reg(OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTST_OFFSET) & RM_M3_RST3ST));
pr_info("iommu_enable: Ducati RST3 released!");
prm_write_mod_reg(RM_M3_RST3ST, OMAP4430_PRM_CORE_MOD,
OMAP4_RM_DUCATI_RSTST_OFFSET);
pr_info("iommu_enable: Ducati %s %d\n", __func__, __LINE__);
}
if (cpu_is_omap44xx() && !strcmp(obj->name, "tesla")) {
/* Check that releasing resets would indeed be effective */
reg = prm_read_mod_reg(OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET);
pr_info("iommu_enable: OMAP4_RM_TESLA_RSTCTRL_OFFSET = 0x%x",
reg);
if ((reg & RM_TESLA_ALL_RESETS) != RM_TESLA_ALL_RESETS) {
pr_info("iommu_enable: Tesla Resets in not proper "
"state!\n");
pr_info("iommu_enable: Tesla Assert RST1 and RST2.n");
prm_write_mod_reg(RM_TESLA_ALL_RESETS,
OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET);
while (prm_read_mod_reg(OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET) !=
RM_TESLA_ALL_RESETS);
}
/* De-assert RST2, and clear the Reset status */
pr_info("iommu_enable: De-assert Tesla RST2\n");
reg = prm_read_mod_reg(OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET);
pr_info("iommu_enable: Tesla RSTCTRL = 0x%x\n", reg);
prm_write_mod_reg(RM_TESLA_REL_RST2_MASK,
OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTCTRL_OFFSET);
while (!(prm_read_mod_reg(OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTST_OFFSET) &
RM_TESLA_RST2ST));
pr_info("iommu_enable: Tesla RST2 released!");
prm_write_mod_reg(RM_TESLA_RST2ST, OMAP4430_PRM_TESLA_MOD,
OMAP4_RM_TESLA_RSTST_OFFSET);
pr_info("iommu_enable: Tesla %s %d\n", __func__, __LINE__);
}
if (!cpu_is_omap44xx())
clk_enable(obj->clk);
err = arch_iommu->enable(obj);
if (!cpu_is_omap44xx())
clk_disable(obj->clk);
return err;
}
int omap2_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
{
prm_write_mod_reg(0, pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST);
return 0;
}
static void omap3_voltage_write_reg(u32 val, u16 mod, u8 offset)
{
prm_write_mod_reg(val, mod, offset);
}