#include <linux/clk.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/iopoll.h>
#include <linux/mfd/syscon.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <dt-bindings/power/mt7623a-power.h>
#include <dt-bindings/power/mt8173-power.h>
+#define MTK_POLL_DELAY_US 10
+#define MTK_POLL_TIMEOUT (jiffies_to_usecs(HZ))
+
#define SPM_VDE_PWR_CON 0x0210
#define SPM_MFG_PWR_CON 0x0214
#define SPM_VEN_PWR_CON 0x0230
{
struct scp_domain *scpd = container_of(genpd, struct scp_domain, genpd);
struct scp *scp = scpd->scp;
- unsigned long timeout;
- bool expired;
void __iomem *ctl_addr = scp->base + scpd->data->ctl_offs;
- u32 sram_pdn_ack = scpd->data->sram_pdn_ack_bits;
+ u32 pdn_ack = scpd->data->sram_pdn_ack_bits;
u32 val;
- int ret;
+ int ret, tmp;
int i;
if (scpd->supply) {
writel(val, ctl_addr);
/* wait until PWR_ACK = 1 */
- timeout = jiffies + HZ;
- expired = false;
- while (1) {
- ret = scpsys_domain_is_on(scpd);
- if (ret > 0)
- break;
-
- if (expired) {
- ret = -ETIMEDOUT;
- goto err_pwr_ack;
- }
-
- cpu_relax();
-
- if (time_after(jiffies, timeout))
- expired = true;
- }
+ ret = readx_poll_timeout(scpsys_domain_is_on, scpd, tmp, tmp > 0,
+ MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
+ if (ret < 0)
+ goto err_pwr_ack;
val &= ~PWR_CLK_DIS_BIT;
writel(val, ctl_addr);
writel(val, ctl_addr);
/* wait until SRAM_PDN_ACK all 0 */
- timeout = jiffies + HZ;
- expired = false;
- while (sram_pdn_ack && (readl(ctl_addr) & sram_pdn_ack)) {
-
- if (expired) {
- ret = -ETIMEDOUT;
- goto err_pwr_ack;
- }
-
- cpu_relax();
-
- if (time_after(jiffies, timeout))
- expired = true;
- }
+ ret = readl_poll_timeout(ctl_addr, tmp, (tmp & pdn_ack) == 0,
+ MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
+ if (ret < 0)
+ goto err_pwr_ack;
if (scpd->data->bus_prot_mask) {
ret = mtk_infracfg_clear_bus_protection(scp->infracfg,
{
struct scp_domain *scpd = container_of(genpd, struct scp_domain, genpd);
struct scp *scp = scpd->scp;
- unsigned long timeout;
- bool expired;
void __iomem *ctl_addr = scp->base + scpd->data->ctl_offs;
u32 pdn_ack = scpd->data->sram_pdn_ack_bits;
u32 val;
- int ret;
+ int ret, tmp;
int i;
if (scpd->data->bus_prot_mask) {
writel(val, ctl_addr);
/* wait until SRAM_PDN_ACK all 1 */
- timeout = jiffies + HZ;
- expired = false;
- while (pdn_ack && (readl(ctl_addr) & pdn_ack) != pdn_ack) {
- if (expired) {
- ret = -ETIMEDOUT;
- goto out;
- }
-
- cpu_relax();
-
- if (time_after(jiffies, timeout))
- expired = true;
- }
+ ret = readl_poll_timeout(ctl_addr, tmp, (tmp & pdn_ack) == pdn_ack,
+ MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
+ if (ret < 0)
+ goto out;
val |= PWR_ISO_BIT;
writel(val, ctl_addr);
writel(val, ctl_addr);
/* wait until PWR_ACK = 0 */
- timeout = jiffies + HZ;
- expired = false;
- while (1) {
- ret = scpsys_domain_is_on(scpd);
- if (ret == 0)
- break;
-
- if (expired) {
- ret = -ETIMEDOUT;
- goto out;
- }
-
- cpu_relax();
-
- if (time_after(jiffies, timeout))
- expired = true;
- }
+ ret = readx_poll_timeout(scpsys_domain_is_on, scpd, tmp, tmp == 0,
+ MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
+ if (ret < 0)
+ goto out;
for (i = 0; i < MAX_CLKS && scpd->clk[i]; i++)
clk_disable_unprepare(scpd->clk[i]);