[PATCH V3 1/4] spmi: pmic-arb: return __iomem pointer instead of offset

Kiran Gunda
2017-07-11T01:45:27Z

Modify the pmic_arb version ops to return an __iomem pointer
to the address instead of an offset. That way we do not need to
care about the base address changes in the new HW version.

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 87 ++++++++++++++++++++++++--------------------
1 file changed, 48 insertions(+), 39 deletions(-)

diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 25589d6..4853758 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -167,14 +167,14 @@ struct spmi_pmic_arb {
* @offset: on v1 offset of per-ee channel.
* on v2 offset of per-ee and per-ppid channel.
* @fmt_cmd: formats a GENI/SPMI command.
- * @owner_acc_status: on v1 offset of PMIC_ARB_SPMI_PIC_OWNERm_ACC_STATUSn
- * on v2 offset of SPMI_PIC_OWNERm_ACC_STATUSn.
- * @acc_enable: on v1 offset of PMIC_ARB_SPMI_PIC_ACC_ENABLEn
- * on v2 offset of SPMI_PIC_ACC_ENABLEn.
- * @irq_status: on v1 offset of PMIC_ARB_SPMI_PIC_IRQ_STATUSn
- * on v2 offset of SPMI_PIC_IRQ_STATUSn.
- * @irq_clear: on v1 offset of PMIC_ARB_SPMI_PIC_IRQ_CLEARn
- * on v2 offset of SPMI_PIC_IRQ_CLEARn.
+ * @owner_acc_status: on v1 address of PMIC_ARB_SPMI_PIC_OWNERm_ACC_STATUSn
+ * on v2 address of SPMI_PIC_OWNERm_ACC_STATUSn.
+ * @acc_enable: on v1 address of PMIC_ARB_SPMI_PIC_ACC_ENABLEn
+ * on v2 address of SPMI_PIC_ACC_ENABLEn.
+ * @irq_status: on v1 address of PMIC_ARB_SPMI_PIC_IRQ_STATUSn
+ * on v2 address of SPMI_PIC_IRQ_STATUSn.
+ * @irq_clear: on v1 address of PMIC_ARB_SPMI_PIC_IRQ_CLEARn
+ * on v2 address of SPMI_PIC_IRQ_CLEARn.
*/
struct pmic_arb_ver_ops {
const char *ver_str;
@@ -184,10 +184,11 @@ struct pmic_arb_ver_ops {
u32 (*fmt_cmd)(u8 opc, u8 sid, u16 addr, u8 bc);
int (*non_data_cmd)(struct spmi_controller *ctrl, u8 opc, u8 sid);
/* Interrupts controller functionality (offset of PIC registers) */
- u32 (*owner_acc_status)(u8 m, u16 n);
- u32 (*acc_enable)(u16 n);
- u32 (*irq_status)(u16 n);
- u32 (*irq_clear)(u16 n);
+ void __iomem *(*owner_acc_status)(struct spmi_pmic_arb *pmic_arb, u8 m,
+ u16 n);
+ void __iomem *(*acc_enable)(struct spmi_pmic_arb *pmic_arb, u16 n);
+ void __iomem *(*irq_status)(struct spmi_pmic_arb *pmic_arb, u16 n);
+ void __iomem *(*irq_clear)(struct spmi_pmic_arb *pmic_arb, u16 n);
};

static inline void pmic_arb_base_write(struct spmi_pmic_arb *pmic_arb,
@@ -476,7 +477,7 @@ static void cleanup_irq(struct spmi_pmic_arb *pmic_arb, u16 apid, int id)
u8 per = ppid & 0xFF;
u8 irq_mask = BIT(id);

- writel_relaxed(irq_mask, pmic_arb->intr + ver_ops->irq_clear(apid));
+ writel_relaxed(irq_mask, ver_ops->irq_clear(pmic_arb, apid));

if (pmic_arb_write_cmd(pmic_arb->spmic, SPMI_CMD_EXT_WRITEL, sid,
(per << 8) + QPNPINT_REG_LATCHED_CLR, &irq_mask, 1))
@@ -498,7 +499,7 @@ static void periph_interrupt(struct spmi_pmic_arb *pmic_arb, u16 apid)
u32 status;
int id;

- status = readl_relaxed(pmic_arb->intr + ver_ops->irq_status(apid));
+ status = readl_relaxed(ver_ops->irq_status(pmic_arb, apid));
while (status) {
id = ffs(status) - 1;
status &= ~BIT(id);
@@ -517,23 +518,21 @@ static void pmic_arb_chained_irq(struct irq_desc *desc)
struct spmi_pmic_arb *pmic_arb = irq_desc_get_handler_data(desc);
const struct pmic_arb_ver_ops *ver_ops = pmic_arb->ver_ops;
struct irq_chip *chip = irq_desc_get_chip(desc);
- void __iomem *intr = pmic_arb->intr;
int first = pmic_arb->min_apid >> 5;
int last = pmic_arb->max_apid >> 5;
+ u8 ee = pmic_arb->ee;
u32 status, enable;
int i, id, apid;

chained_irq_enter(chip, desc);

for (i = first; i <= last; ++i) {
- status = readl_relaxed(intr +
- ver_ops->owner_acc_status(pmic_arb->ee, i));
+ status = readl_relaxed(ver_ops->owner_acc_status(pmic_arb, ee, i));
while (status) {
id = ffs(status) - 1;
status &= ~BIT(id);
apid = id + i * 32;
- enable = readl_relaxed(intr +
- pmic_arb->ver_ops->acc_enable(apid));
+ enable = readl_relaxed(ver_ops->acc_enable(pmic_arb, apid));
if (enable & SPMI_PIC_ACC_ENABLE_BIT)
periph_interrupt(pmic_arb, apid);
}
@@ -550,7 +549,7 @@ static void qpnpint_irq_ack(struct irq_data *d)
u16 apid = hwirq_to_apid(d->hwirq);
u8 data;

- writel_relaxed(BIT(irq), pmic_arb->intr + ver_ops->irq_clear(apid));
+ writel_relaxed(BIT(irq), ver_ops->irq_clear(pmic_arb, apid));

data = BIT(irq);
qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &data, 1);
@@ -567,12 +566,13 @@ static void qpnpint_irq_mask(struct irq_data *d)
static void qpnpint_irq_unmask(struct irq_data *d)
{
struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+ const struct pmic_arb_ver_ops *ver_ops = pmic_arb->ver_ops;
u8 irq = hwirq_to_irq(d->hwirq);
u16 apid = hwirq_to_apid(d->hwirq);
u8 buf[2];

writel_relaxed(SPMI_PIC_ACC_ENABLE_BIT,
- pmic_arb->intr + pmic_arb->ver_ops->acc_enable(apid));
+ ver_ops->acc_enable(pmic_arb, apid));

qpnpint_spmi_read(d, QPNPINT_REG_EN_SET, &buf[0], 1);
if (!(buf[0] & BIT(irq))) {
@@ -843,49 +843,58 @@ static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
return (opc << 27) | ((addr & 0xff) << 4) | (bc & 0x7);
}

-static u32 pmic_arb_owner_acc_status_v1(u8 m, u16 n)
+static void __iomem *
+pmic_arb_owner_acc_status_v1(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
{
- return 0x20 * m + 0x4 * n;
+ return pmic_arb->intr + 0x20 * m + 0x4 * n;
}

-static u32 pmic_arb_owner_acc_status_v2(u8 m, u16 n)
+static void __iomem *
+pmic_arb_owner_acc_status_v2(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
{
- return 0x100000 + 0x1000 * m + 0x4 * n;
+ return pmic_arb->intr + 0x100000 + 0x1000 * m + 0x4 * n;
}

-static u32 pmic_arb_owner_acc_status_v3(u8 m, u16 n)
+static void __iomem *
+pmic_arb_owner_acc_status_v3(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
{
- return 0x200000 + 0x1000 * m + 0x4 * n;
+ return pmic_arb->intr + 0x200000 + 0x1000 * m + 0x4 * n;
}

-static u32 pmic_arb_acc_enable_v1(u16 n)
+static void __iomem *
+pmic_arb_acc_enable_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
{
- return 0x200 + 0x4 * n;
+ return pmic_arb->intr + 0x200 + 0x4 * n;
}

-static u32 pmic_arb_acc_enable_v2(u16 n)
+static void __iomem *
+pmic_arb_acc_enable_v2(struct spmi_pmic_arb *pmic_arb, u16 n)
{
- return 0x1000 * n;
+ return pmic_arb->intr + 0x1000 * n;
}

-static u32 pmic_arb_irq_status_v1(u16 n)
+static void __iomem *
+pmic_arb_irq_status_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
{
- return 0x600 + 0x4 * n;
+ return pmic_arb->intr + 0x600 + 0x4 * n;
}

-static u32 pmic_arb_irq_status_v2(u16 n)
+static void __iomem *
+pmic_arb_irq_status_v2(struct spmi_pmic_arb *pmic_arb, u16 n)
{
- return 0x4 + 0x1000 * n;
+ return pmic_arb->intr + 0x4 + 0x1000 * n;
}

-static u32 pmic_arb_irq_clear_v1(u16 n)
+static void __iomem *
+pmic_arb_irq_clear_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
{
- return 0xA00 + 0x4 * n;
+ return pmic_arb->intr + 0xA00 + 0x4 * n;
}

-static u32 pmic_arb_irq_clear_v2(u16 n)
+static void __iomem *
+pmic_arb_irq_clear_v2(struct spmi_pmic_arb *pmic_arb, u16 n)
{
- return 0x8 + 0x1000 * n;
+ return pmic_arb->intr + 0x8 + 0x1000 * n;
}

static const struct pmic_arb_ver_ops pmic_arb_v1 = {