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-rw-r--r--drivers/spmi/spmi-pmic-arb.c75
1 files changed, 5 insertions, 70 deletions
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index f4b7a98a7913..7531519e4cff 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -128,7 +128,6 @@ struct apid_data {
* @ee: the current Execution Environment
* @min_apid: minimum APID (used for bounding IRQ search)
* @max_apid: maximum APID
- * @max_periph: maximum number of PMIC peripherals supported by HW.
* @mapping_table: in-memory copy of PPID -> APID mapping table.
* @domain: irq domain object for PMIC IRQ domain
* @spmic: SPMI controller object
@@ -148,7 +147,6 @@ struct spmi_pmic_arb {
u8 ee;
u16 min_apid;
u16 max_apid;
- u16 max_periph;
u32 *mapping_table;
DECLARE_BITMAP(mapping_table_valid, PMIC_ARB_MAX_PERIPHS);
struct irq_domain *domain;
@@ -164,7 +162,6 @@ struct spmi_pmic_arb {
*
* @ver_str: version string.
* @ppid_to_apid: finds the apid for a given ppid.
- * @mode: access rights to specified pmic peripheral.
* @non_data_cmd: on v1 issues an spmi non-data command.
* on v2 no HW support, returns -EOPNOTSUPP.
* @offset: on v1 offset of per-ee channel.
@@ -183,8 +180,6 @@ struct pmic_arb_ver_ops {
const char *ver_str;
int (*ppid_to_apid)(struct spmi_pmic_arb *pa, u8 sid, u16 addr,
u16 *apid);
- int (*mode)(struct spmi_pmic_arb *dev, u8 sid, u16 addr,
- mode_t *mode);
/* spmi commands (read_cmd, write_cmd, cmd) functionality */
int (*offset)(struct spmi_pmic_arb *dev, u8 sid, u16 addr,
u32 *offset);
@@ -340,23 +335,11 @@ static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
u32 cmd;
int rc;
u32 offset;
- mode_t mode;
rc = pa->ver_ops->offset(pa, sid, addr, &offset);
if (rc)
return rc;
- rc = pa->ver_ops->mode(pa, sid, addr, &mode);
- if (rc)
- return rc;
-
- if (!(mode & S_IRUSR)) {
- dev_err(&pa->spmic->dev,
- "error: impermissible read from peripheral sid:%d addr:0x%x\n",
- sid, addr);
- return -EPERM;
- }
-
if (bc >= PMIC_ARB_MAX_TRANS_BYTES) {
dev_err(&ctrl->dev,
"pmic-arb supports 1..%d bytes per trans, but:%zu requested",
@@ -402,23 +385,11 @@ static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
u32 cmd;
int rc;
u32 offset;
- mode_t mode;
rc = pa->ver_ops->offset(pa, sid, addr, &offset);
if (rc)
return rc;
- rc = pa->ver_ops->mode(pa, sid, addr, &mode);
- if (rc)
- return rc;
-
- if (!(mode & S_IWUSR)) {
- dev_err(&pa->spmic->dev,
- "error: impermissible write to peripheral sid:%d addr:0x%x\n",
- sid, addr);
- return -EPERM;
- }
-
if (bc >= PMIC_ARB_MAX_TRANS_BYTES) {
dev_err(&ctrl->dev,
"pmic-arb supports 1..%d bytes per trans, but:%zu requested",
@@ -785,13 +756,6 @@ pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid)
return -ENODEV;
}
-static int
-pmic_arb_mode_v1_v3(struct spmi_pmic_arb *pa, u8 sid, u16 addr, mode_t *mode)
-{
- *mode = S_IRUSR | S_IWUSR;
- return 0;
-}
-
/* v1 offset per ee */
static int
pmic_arb_offset_v1(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u32 *offset)
@@ -810,15 +774,15 @@ static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pa, u16 ppid)
* PMIC_ARB_REG_CHNL is a table in HW mapping channel to ppid.
* ppid_to_apid is an in-memory invert of that table.
*/
- for (apid = pa->last_apid; apid < pa->max_periph; apid++) {
- regval = readl_relaxed(pa->cnfg +
- SPMI_OWNERSHIP_TABLE_REG(apid));
- pa->apid_data[apid].owner = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
-
+ for (apid = pa->last_apid; ; apid++) {
offset = PMIC_ARB_REG_CHNL(apid);
if (offset >= pa->core_size)
break;
+ regval = readl_relaxed(pa->cnfg +
+ SPMI_OWNERSHIP_TABLE_REG(apid));
+ pa->apid_data[apid].owner = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
+
regval = readl_relaxed(pa->core + offset);
if (!regval)
continue;
@@ -853,24 +817,6 @@ pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid)
return 0;
}
-static int
-pmic_arb_mode_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, mode_t *mode)
-{
- u16 apid;
- int rc;
-
- rc = pmic_arb_ppid_to_apid_v2(pa, sid, addr, &apid);
- if (rc < 0)
- return rc;
-
- *mode = 0;
- *mode |= S_IRUSR;
-
- if (pa->ee == pa->apid_data[apid].owner)
- *mode |= S_IWUSR;
- return 0;
-}
-
/* v2 offset per ppid and per ee */
static int
pmic_arb_offset_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u32 *offset)
@@ -944,7 +890,6 @@ static u32 pmic_arb_irq_clear_v2(u16 n)
static const struct pmic_arb_ver_ops pmic_arb_v1 = {
.ver_str = "v1",
.ppid_to_apid = pmic_arb_ppid_to_apid_v1,
- .mode = pmic_arb_mode_v1_v3,
.non_data_cmd = pmic_arb_non_data_cmd_v1,
.offset = pmic_arb_offset_v1,
.fmt_cmd = pmic_arb_fmt_cmd_v1,
@@ -957,7 +902,6 @@ static const struct pmic_arb_ver_ops pmic_arb_v1 = {
static const struct pmic_arb_ver_ops pmic_arb_v2 = {
.ver_str = "v2",
.ppid_to_apid = pmic_arb_ppid_to_apid_v2,
- .mode = pmic_arb_mode_v2,
.non_data_cmd = pmic_arb_non_data_cmd_v2,
.offset = pmic_arb_offset_v2,
.fmt_cmd = pmic_arb_fmt_cmd_v2,
@@ -970,7 +914,6 @@ static const struct pmic_arb_ver_ops pmic_arb_v2 = {
static const struct pmic_arb_ver_ops pmic_arb_v3 = {
.ver_str = "v3",
.ppid_to_apid = pmic_arb_ppid_to_apid_v2,
- .mode = pmic_arb_mode_v1_v3,
.non_data_cmd = pmic_arb_non_data_cmd_v2,
.offset = pmic_arb_offset_v2,
.fmt_cmd = pmic_arb_fmt_cmd_v2,
@@ -1003,11 +946,6 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
pa->core_size = resource_size(res);
- if (pa->core_size <= 0x800) {
- dev_err(&pdev->dev, "core_size is smaller than 0x800. Failing Probe\n");
- err = -EINVAL;
- goto err_put_ctrl;
- }
core = devm_ioremap_resource(&ctrl->dev, res);
if (IS_ERR(core)) {
@@ -1036,9 +974,6 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
else
pa->ver_ops = &pmic_arb_v3;
- /* the apid to ppid table starts at PMIC_ARB_REG_CHNL(0) */
- pa->max_periph = (pa->core_size - PMIC_ARB_REG_CHNL(0)) / 4;
-
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"obsrvr");
pa->rd_base = devm_ioremap_resource(&ctrl->dev, res);

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