static int __uniphier_watchdog_start(struct regmap *regmap, unsigned int sec)
{
unsigned int val;
int ret;
ret = regmap_read_poll_timeout(regmap, WDTCTRL, val,
!(val & WDTCTRL_STATUS),
0, WDTST_TIMEOUT);
if (ret)
return ret;
/* Setup period */
ret = regmap_write(regmap, WDTTIMSET,
SEC_TO_WDTTIMSET_PRD(sec));
if (ret)
return ret;
/* Enable and clear watchdog */
ret = regmap_write(regmap, WDTCTRL, WDTCTRL_ENABLE | WDTCTRL_CLEAR);
if (!ret)
/*
* As SoC specification, after clear counter,
* it needs to wait until counter status is 1.
*/
ret = regmap_read_poll_timeout(regmap, WDTCTRL, val,
(val & WDTCTRL_STATUS),
0, WDTST_TIMEOUT);
return ret;
}
static int da8xx_usb0_clk48_enable(struct clk_hw *hw)
{
struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
unsigned int mask, val;
int ret;
/* Locking the USB 2.O PLL requires that the USB 2.O PSC is enabled
* temporaily. It can be turned back off once the PLL is locked.
*/
clk_enable(usb0->fck);
/* Turn on the USB 2.0 PHY, but just the PLL, and not OTG. The USB 1.1
* PHY may use the USB 2.0 PLL clock without USB 2.0 OTG being used.
*/
mask = CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_PHY_PLLON;
val = CFGCHIP2_PHY_PLLON;
regmap_write_bits(usb0->regmap, CFGCHIP(2), mask, val);
ret = regmap_read_poll_timeout(usb0->regmap, CFGCHIP(2), val,
val & CFGCHIP2_PHYCLKGD, 0, 500000);
clk_disable(usb0->fck);
return ret;
}
static int mt8183_afe_runtime_suspend(struct device *dev)
{
struct mtk_base_afe *afe = dev_get_drvdata(dev);
struct mt8183_afe_private *afe_priv = afe->platform_priv;
unsigned int value;
int ret;
if (!afe->regmap || afe_priv->pm_runtime_bypass_reg_ctl)
goto skip_regmap;
/* disable AFE */
regmap_update_bits(afe->regmap, AFE_DAC_CON0, AFE_ON_MASK_SFT, 0x0);
ret = regmap_read_poll_timeout(afe->regmap,
AFE_DAC_MON,
value,
(value & AFE_ON_RETM_MASK_SFT) == 0,
20,
1 * 1000 * 1000);
if (ret)
dev_warn(afe->dev, "%s(), ret %d\n", __func__, ret);
/* make sure all irq status are cleared, twice intended */
regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CLR, 0xffff, 0xffff);
regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CLR, 0xffff, 0xffff);
/* cache only */
regcache_cache_only(afe->regmap, true);
regcache_mark_dirty(afe->regmap);
skip_regmap:
return mt8183_afe_disable_clock(afe);
}
static int stm32_lptim_set_enable_state(struct stm32_lptim_cnt *priv,
int enable)
{
int ret;
u32 val;
val = FIELD_PREP(STM32_LPTIM_ENABLE, enable);
ret = regmap_write(priv->regmap, STM32_LPTIM_CR, val);
if (ret)
return ret;
if (!enable) {
clk_disable(priv->clk);
priv->enabled = false;
return 0;
}
/* LP timer must be enabled before writing CMP & ARR */
ret = regmap_write(priv->regmap, STM32_LPTIM_ARR, priv->ceiling);
if (ret)
return ret;
ret = regmap_write(priv->regmap, STM32_LPTIM_CMP, 0);
if (ret)
return ret;
/* ensure CMP & ARR registers are properly written */
ret = regmap_read_poll_timeout(priv->regmap, STM32_LPTIM_ISR, val,
(val & STM32_LPTIM_CMPOK_ARROK),
100, 1000);
if (ret)
return ret;
ret = regmap_write(priv->regmap, STM32_LPTIM_ICR,
STM32_LPTIM_CMPOKCF_ARROKCF);
if (ret)
return ret;
ret = clk_enable(priv->clk);
if (ret) {
regmap_write(priv->regmap, STM32_LPTIM_CR, 0);
return ret;
}
priv->enabled = true;
/* Start LP timer in continuous mode */
return regmap_update_bits(priv->regmap, STM32_LPTIM_CR,
STM32_LPTIM_CNTSTRT, STM32_LPTIM_CNTSTRT);
}
static void socfpga_a10_fpga_generate_dclks(struct a10_fpga_priv *priv,
u32 count)
{
u32 val;
/* Clear any existing DONE status. */
regmap_write(priv->regmap, A10_FPGAMGR_DCLKSTAT_OFST,
A10_FPGAMGR_DCLKSTAT_DCLKDONE);
/* Issue the DCLK regmap. */
regmap_write(priv->regmap, A10_FPGAMGR_DCLKCNT_OFST, count);
/* wait till the dclkcnt done */
regmap_read_poll_timeout(priv->regmap, A10_FPGAMGR_DCLKSTAT_OFST, val,
val, 1, 100);
/* Clear DONE status. */
regmap_write(priv->regmap, A10_FPGAMGR_DCLKSTAT_OFST,
A10_FPGAMGR_DCLKSTAT_DCLKDONE);
}
/*
* UniPhier Watchdog operations
*/
static int uniphier_watchdog_ping(struct watchdog_device *w)
{
struct uniphier_wdt_dev *wdev = watchdog_get_drvdata(w);
unsigned int val;
int ret;
/* Clear counter */
ret = regmap_write_bits(wdev->regmap, WDTCTRL,
WDTCTRL_CLEAR, WDTCTRL_CLEAR);
if (!ret)
/*
* As SoC specification, after clear counter,
* it needs to wait until counter status is 1.
*/
ret = regmap_read_poll_timeout(wdev->regmap, WDTCTRL, val,
(val & WDTCTRL_STATUS),
0, WDTST_TIMEOUT);
return ret;
}
static int uniphier_clk_cpugear_set_parent(struct clk_hw *hw, u8 index)
{
struct uniphier_clk_cpugear *gear = to_uniphier_clk_cpugear(hw);
int ret;
unsigned int val;
ret = regmap_write_bits(gear->regmap,
gear->regbase + UNIPHIER_CLK_CPUGEAR_SET,
gear->mask, index);
if (ret)
return ret;
ret = regmap_write_bits(gear->regmap,
gear->regbase + UNIPHIER_CLK_CPUGEAR_SET,
UNIPHIER_CLK_CPUGEAR_UPD_BIT,
UNIPHIER_CLK_CPUGEAR_UPD_BIT);
if (ret)
return ret;
return regmap_read_poll_timeout(gear->regmap,
gear->regbase + UNIPHIER_CLK_CPUGEAR_UPD,
val, !(val & UNIPHIER_CLK_CPUGEAR_UPD_BIT),
0, 1);
}