* [PATCH V1 01/12] spmi: pmic-arb: remove the read/write access checks
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 02/12] spmi: pmic-arb: rename pa_xx to pmic_arb_xx and other cleanup Kiran Gunda
` (10 subsequent siblings)
11 siblings, 0 replies; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
The access mode checks for peripheral ownership for read/write
permissions should not be required. Every peripheral enabled for
this master is expected to have a read/write permissions. If there
is any such invalid access due to wrong configuration in boot loader
or device tree files, then it should be fixed in those locations.
Hence, remove the access mode checks from the driver.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 75 +++-----------------------------------------
1 file changed, 5 insertions(+), 70 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index f4b7a98..7531519 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 @@ static int qpnpint_irq_domain_map(struct irq_domain *d,
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 @@ static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pa, u16 ppid)
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 u32 pmic_arb_irq_clear_v2(u16 n)
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 u32 pmic_arb_irq_clear_v2(u16 n)
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);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH V1 02/12] spmi: pmic-arb: rename pa_xx to pmic_arb_xx and other cleanup
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 01/12] spmi: pmic-arb: remove the read/write access checks Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-28 0:00 ` Stephen Boyd
2017-07-20 7:31 ` [PATCH V1 03/12] spmi: pmic-arb: clean up pmic_arb_find_apid function Kiran Gunda
` (9 subsequent siblings)
11 siblings, 1 reply; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
This patch cleans up the following.
- Rename the "pa" to "pmic_arb".
- Rename the spmi_pmic_arb *dev to spmi_pmic_arb *pmic_arb.
- Rename the pa_{read,write}_data() functions to
pmic_arb_{read,write}_data().
- Rename channel to APID.
- Rename the HWIRQ_*() macros to hwirq_to_*().
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 418 +++++++++++++++++++++----------------------
1 file changed, 209 insertions(+), 209 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 7531519..530fa11 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -39,7 +39,7 @@
#define PMIC_ARB_WDATA1 0x14
#define PMIC_ARB_RDATA0 0x18
#define PMIC_ARB_RDATA1 0x1C
-#define PMIC_ARB_REG_CHNL(N) (0x800 + 0x4 * (N))
+#define PMIC_ARB_REG_APID(N) (0x800 + 0x4 * (N))
/* Mapping Table */
#define SPMI_MAPPING_TABLE_REG(N) (0x0B00 + (4 * (N)))
@@ -51,7 +51,7 @@
#define SPMI_MAPPING_TABLE_TREE_DEPTH 16 /* Maximum of 16-bits */
#define PMIC_ARB_MAX_PPID BIT(12) /* PPID is 12bit */
-#define PMIC_ARB_CHAN_VALID BIT(15)
+#define PMIC_ARB_APID_VALID BIT(15)
/* Ownership Table */
#define SPMI_OWNERSHIP_TABLE_REG(N) (0x0700 + (4 * (N)))
@@ -97,16 +97,16 @@ enum pmic_arb_cmd_op_code {
/* interrupt enable bit */
#define SPMI_PIC_ACC_ENABLE_BIT BIT(0)
-#define HWIRQ(slave_id, periph_id, irq_id, apid) \
+#define spec_to_hwirq(slave_id, periph_id, irq_id, apid) \
((((slave_id) & 0xF) << 28) | \
(((periph_id) & 0xFF) << 20) | \
(((irq_id) & 0x7) << 16) | \
(((apid) & 0x1FF) << 0))
-#define HWIRQ_SID(hwirq) (((hwirq) >> 28) & 0xF)
-#define HWIRQ_PER(hwirq) (((hwirq) >> 20) & 0xFF)
-#define HWIRQ_IRQ(hwirq) (((hwirq) >> 16) & 0x7)
-#define HWIRQ_APID(hwirq) (((hwirq) >> 0) & 0x1FF)
+#define hwirq_to_sid(hwirq) (((hwirq) >> 28) & 0xF)
+#define hwirq_to_per(hwirq) (((hwirq) >> 20) & 0xFF)
+#define hwirq_to_irq(hwirq) (((hwirq) >> 16) & 0x7)
+#define hwirq_to_apid(hwirq) (((hwirq) >> 0) & 0x1FF)
struct pmic_arb_ver_ops;
@@ -132,7 +132,7 @@ struct apid_data {
* @domain: irq domain object for PMIC IRQ domain
* @spmic: SPMI controller object
* @ver_ops: version dependent operations.
- * @ppid_to_apid in-memory copy of PPID -> channel (APID) mapping table.
+ * @ppid_to_apid in-memory copy of PPID -> APID mapping table.
*/
struct spmi_pmic_arb {
void __iomem *rd_base;
@@ -178,10 +178,10 @@ struct spmi_pmic_arb {
*/
struct pmic_arb_ver_ops {
const char *ver_str;
- int (*ppid_to_apid)(struct spmi_pmic_arb *pa, u8 sid, u16 addr,
+ int (*ppid_to_apid)(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
u16 *apid);
/* spmi commands (read_cmd, write_cmd, cmd) functionality */
- int (*offset)(struct spmi_pmic_arb *dev, u8 sid, u16 addr,
+ int (*offset)(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
u32 *offset);
u32 (*fmt_cmd)(u8 opc, u8 sid, u16 addr, u8 bc);
int (*non_data_cmd)(struct spmi_controller *ctrl, u8 opc, u8 sid);
@@ -192,56 +192,57 @@ struct pmic_arb_ver_ops {
u32 (*irq_clear)(u16 n);
};
-static inline void pmic_arb_base_write(struct spmi_pmic_arb *pa,
+static inline void pmic_arb_base_write(struct spmi_pmic_arb *pmic_arb,
u32 offset, u32 val)
{
- writel_relaxed(val, pa->wr_base + offset);
+ writel_relaxed(val, pmic_arb->wr_base + offset);
}
-static inline void pmic_arb_set_rd_cmd(struct spmi_pmic_arb *pa,
+static inline void pmic_arb_set_rd_cmd(struct spmi_pmic_arb *pmic_arb,
u32 offset, u32 val)
{
- writel_relaxed(val, pa->rd_base + offset);
+ writel_relaxed(val, pmic_arb->rd_base + offset);
}
/**
- * pa_read_data: reads pmic-arb's register and copy 1..4 bytes to buf
+ * pmic_arb_read_data: reads pmic-arb's register and copy 1..4 bytes to buf
* @bc: byte count -1. range: 0..3
* @reg: register's address
* @buf: output parameter, length must be bc + 1
*/
-static void pa_read_data(struct spmi_pmic_arb *pa, u8 *buf, u32 reg, u8 bc)
+static void
+pmic_arb_read_data(struct spmi_pmic_arb *pmic_arb, u8 *buf, u32 reg, u8 bc)
{
- u32 data = __raw_readl(pa->rd_base + reg);
+ u32 data = __raw_readl(pmic_arb->rd_base + reg);
memcpy(buf, &data, (bc & 3) + 1);
}
/**
- * pa_write_data: write 1..4 bytes from buf to pmic-arb's register
+ * pmic_arb_write_data: write 1..4 bytes from buf to pmic-arb's register
* @bc: byte-count -1. range: 0..3.
* @reg: register's address.
* @buf: buffer to write. length must be bc + 1.
*/
-static void
-pa_write_data(struct spmi_pmic_arb *pa, const u8 *buf, u32 reg, u8 bc)
+static void pmic_arb_write_data(struct spmi_pmic_arb *pmic_arb, const u8 *buf,
+ u32 reg, u8 bc)
{
u32 data = 0;
memcpy(&data, buf, (bc & 3) + 1);
- pmic_arb_base_write(pa, reg, data);
+ pmic_arb_base_write(pmic_arb, reg, data);
}
static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
void __iomem *base, u8 sid, u16 addr)
{
- struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl);
+ struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
u32 status = 0;
u32 timeout = PMIC_ARB_TIMEOUT_US;
u32 offset;
int rc;
- rc = pa->ver_ops->offset(pa, sid, addr, &offset);
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr, &offset);
if (rc)
return rc;
@@ -252,22 +253,19 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
if (status & PMIC_ARB_STATUS_DONE) {
if (status & PMIC_ARB_STATUS_DENIED) {
- dev_err(&ctrl->dev,
- "%s: transaction denied (0x%x)\n",
+ dev_err(&ctrl->dev, "%s: transaction denied (0x%x)\n",
__func__, status);
return -EPERM;
}
if (status & PMIC_ARB_STATUS_FAILURE) {
- dev_err(&ctrl->dev,
- "%s: transaction failed (0x%x)\n",
+ dev_err(&ctrl->dev, "%s: transaction failed (0x%x)\n",
__func__, status);
return -EIO;
}
if (status & PMIC_ARB_STATUS_DROPPED) {
- dev_err(&ctrl->dev,
- "%s: transaction dropped (0x%x)\n",
+ dev_err(&ctrl->dev, "%s: transaction dropped (0x%x)\n",
__func__, status);
return -EIO;
}
@@ -277,8 +275,7 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
udelay(1);
}
- dev_err(&ctrl->dev,
- "%s: timeout, status 0x%x\n",
+ dev_err(&ctrl->dev, "%s: timeout, status 0x%x\n",
__func__, status);
return -ETIMEDOUT;
}
@@ -286,22 +283,22 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
static int
pmic_arb_non_data_cmd_v1(struct spmi_controller *ctrl, u8 opc, u8 sid)
{
- struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl);
+ struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
unsigned long flags;
u32 cmd;
int rc;
u32 offset;
- rc = pa->ver_ops->offset(pa, sid, 0, &offset);
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, 0, &offset);
if (rc)
return rc;
cmd = ((opc | 0x40) << 27) | ((sid & 0xf) << 20);
- raw_spin_lock_irqsave(&pa->lock, flags);
- pmic_arb_base_write(pa, offset + PMIC_ARB_CMD, cmd);
- rc = pmic_arb_wait_for_done(ctrl, pa->wr_base, sid, 0);
- raw_spin_unlock_irqrestore(&pa->lock, flags);
+ raw_spin_lock_irqsave(&pmic_arb->lock, flags);
+ pmic_arb_base_write(pmic_arb, offset + PMIC_ARB_CMD, cmd);
+ rc = pmic_arb_wait_for_done(ctrl, pmic_arb->wr_base, sid, 0);
+ raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
return rc;
}
@@ -315,7 +312,7 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
/* Non-data command */
static int pmic_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid)
{
- struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl);
+ struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
dev_dbg(&ctrl->dev, "cmd op:0x%x sid:%d\n", opc, sid);
@@ -323,26 +320,25 @@ static int pmic_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid)
if (opc < SPMI_CMD_RESET || opc > SPMI_CMD_WAKEUP)
return -EINVAL;
- return pa->ver_ops->non_data_cmd(ctrl, opc, sid);
+ return pmic_arb->ver_ops->non_data_cmd(ctrl, opc, sid);
}
static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
u16 addr, u8 *buf, size_t len)
{
- struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl);
+ struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
unsigned long flags;
u8 bc = len - 1;
u32 cmd;
int rc;
u32 offset;
- rc = pa->ver_ops->offset(pa, sid, addr, &offset);
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr, &offset);
if (rc)
return rc;
if (bc >= PMIC_ARB_MAX_TRANS_BYTES) {
- dev_err(&ctrl->dev,
- "pmic-arb supports 1..%d bytes per trans, but:%zu requested",
+ dev_err(&ctrl->dev, "pmic-arb supports 1..%d bytes per trans, but:%zu requested",
PMIC_ARB_MAX_TRANS_BYTES, len);
return -EINVAL;
}
@@ -357,42 +353,42 @@ static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
else
return -EINVAL;
- cmd = pa->ver_ops->fmt_cmd(opc, sid, addr, bc);
+ cmd = pmic_arb->ver_ops->fmt_cmd(opc, sid, addr, bc);
- raw_spin_lock_irqsave(&pa->lock, flags);
- pmic_arb_set_rd_cmd(pa, offset + PMIC_ARB_CMD, cmd);
- rc = pmic_arb_wait_for_done(ctrl, pa->rd_base, sid, addr);
+ raw_spin_lock_irqsave(&pmic_arb->lock, flags);
+ pmic_arb_set_rd_cmd(pmic_arb, offset + PMIC_ARB_CMD, cmd);
+ rc = pmic_arb_wait_for_done(ctrl, pmic_arb->rd_base, sid, addr);
if (rc)
goto done;
- pa_read_data(pa, buf, offset + PMIC_ARB_RDATA0,
+ pmic_arb_read_data(pmic_arb, buf, offset + PMIC_ARB_RDATA0,
min_t(u8, bc, 3));
if (bc > 3)
- pa_read_data(pa, buf + 4, offset + PMIC_ARB_RDATA1, bc - 4);
+ pmic_arb_read_data(pmic_arb, buf + 4, offset + PMIC_ARB_RDATA1,
+ bc - 4);
done:
- raw_spin_unlock_irqrestore(&pa->lock, flags);
+ raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
return rc;
}
static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
u16 addr, const u8 *buf, size_t len)
{
- struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl);
+ struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
unsigned long flags;
u8 bc = len - 1;
u32 cmd;
int rc;
u32 offset;
- rc = pa->ver_ops->offset(pa, sid, addr, &offset);
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr, &offset);
if (rc)
return rc;
if (bc >= PMIC_ARB_MAX_TRANS_BYTES) {
- dev_err(&ctrl->dev,
- "pmic-arb supports 1..%d bytes per trans, but:%zu requested",
+ dev_err(&ctrl->dev, "pmic-arb supports 1..%d bytes per trans, but:%zu requested",
PMIC_ARB_MAX_TRANS_BYTES, len);
return -EINVAL;
}
@@ -409,18 +405,20 @@ static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
else
return -EINVAL;
- cmd = pa->ver_ops->fmt_cmd(opc, sid, addr, bc);
+ cmd = pmic_arb->ver_ops->fmt_cmd(opc, sid, addr, bc);
/* Write data to FIFOs */
- raw_spin_lock_irqsave(&pa->lock, flags);
- pa_write_data(pa, buf, offset + PMIC_ARB_WDATA0, min_t(u8, bc, 3));
+ raw_spin_lock_irqsave(&pmic_arb->lock, flags);
+ pmic_arb_write_data(pmic_arb, buf, offset + PMIC_ARB_WDATA0,
+ min_t(u8, bc, 3));
if (bc > 3)
- pa_write_data(pa, buf + 4, offset + PMIC_ARB_WDATA1, bc - 4);
+ pmic_arb_write_data(pmic_arb, buf + 4, offset + PMIC_ARB_WDATA1,
+ bc - 4);
/* Start the transaction */
- pmic_arb_base_write(pa, offset + PMIC_ARB_CMD, cmd);
- rc = pmic_arb_wait_for_done(ctrl, pa->wr_base, sid, addr);
- raw_spin_unlock_irqrestore(&pa->lock, flags);
+ pmic_arb_base_write(pmic_arb, offset + PMIC_ARB_CMD, cmd);
+ rc = pmic_arb_wait_for_done(ctrl, pmic_arb->wr_base, sid, addr);
+ raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
return rc;
}
@@ -446,67 +444,66 @@ struct spmi_pmic_arb_qpnpint_type {
static void qpnpint_spmi_write(struct irq_data *d, u8 reg, void *buf,
size_t len)
{
- struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d);
- u8 sid = HWIRQ_SID(d->hwirq);
- u8 per = HWIRQ_PER(d->hwirq);
+ struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+ u8 sid = hwirq_to_sid(d->hwirq);
+ u8 per = hwirq_to_per(d->hwirq);
- if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid,
+ if (pmic_arb_write_cmd(pmic_arb->spmic, SPMI_CMD_EXT_WRITEL, sid,
(per << 8) + reg, buf, len))
- dev_err_ratelimited(&pa->spmic->dev,
- "failed irqchip transaction on %x\n",
+ dev_err_ratelimited(&pmic_arb->spmic->dev, "failed irqchip transaction on %x\n",
d->irq);
}
static void qpnpint_spmi_read(struct irq_data *d, u8 reg, void *buf, size_t len)
{
- struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d);
- u8 sid = HWIRQ_SID(d->hwirq);
- u8 per = HWIRQ_PER(d->hwirq);
+ struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+ u8 sid = hwirq_to_sid(d->hwirq);
+ u8 per = hwirq_to_per(d->hwirq);
- if (pmic_arb_read_cmd(pa->spmic, SPMI_CMD_EXT_READL, sid,
+ if (pmic_arb_read_cmd(pmic_arb->spmic, SPMI_CMD_EXT_READL, sid,
(per << 8) + reg, buf, len))
- dev_err_ratelimited(&pa->spmic->dev,
- "failed irqchip transaction on %x\n",
+ dev_err_ratelimited(&pmic_arb->spmic->dev, "failed irqchip transaction on %x\n",
d->irq);
}
-static void cleanup_irq(struct spmi_pmic_arb *pa, u16 apid, int id)
+static void cleanup_irq(struct spmi_pmic_arb *pmic_arb, u16 apid, int id)
{
- u16 ppid = pa->apid_data[apid].ppid;
+ u16 ppid = pmic_arb->apid_data[apid].ppid;
u8 sid = ppid >> 8;
u8 per = ppid & 0xFF;
u8 irq_mask = BIT(id);
- writel_relaxed(irq_mask, pa->intr + pa->ver_ops->irq_clear(apid));
+ writel_relaxed(irq_mask, pmic_arb->intr +
+ pmic_arb->ver_ops->irq_clear(apid));
- if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid,
+ if (pmic_arb_write_cmd(pmic_arb->spmic, SPMI_CMD_EXT_WRITEL, sid,
(per << 8) + QPNPINT_REG_LATCHED_CLR, &irq_mask, 1))
- dev_err_ratelimited(&pa->spmic->dev,
- "failed to ack irq_mask = 0x%x for ppid = %x\n",
+ dev_err_ratelimited(&pmic_arb->spmic->dev, "failed to ack irq_mask = 0x%x for ppid = %x\n",
irq_mask, ppid);
- if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid,
+ if (pmic_arb_write_cmd(pmic_arb->spmic, SPMI_CMD_EXT_WRITEL, sid,
(per << 8) + QPNPINT_REG_EN_CLR, &irq_mask, 1))
- dev_err_ratelimited(&pa->spmic->dev,
- "failed to ack irq_mask = 0x%x for ppid = %x\n",
+ dev_err_ratelimited(&pmic_arb->spmic->dev, "failed to ack irq_mask = 0x%x for ppid = %x\n",
irq_mask, ppid);
}
-static void periph_interrupt(struct spmi_pmic_arb *pa, u16 apid)
+static void periph_interrupt(struct spmi_pmic_arb *pmic_arb, u16 apid)
{
unsigned int irq;
u32 status;
int id;
- u8 sid = (pa->apid_data[apid].ppid >> 8) & 0xF;
- u8 per = pa->apid_data[apid].ppid & 0xFF;
+ u8 sid = (pmic_arb->apid_data[apid].ppid >> 8) & 0xF;
+ u8 per = pmic_arb->apid_data[apid].ppid & 0xFF;
- status = readl_relaxed(pa->intr + pa->ver_ops->irq_status(apid));
+ status = readl_relaxed(pmic_arb->intr +
+ pmic_arb->ver_ops->irq_status(apid));
while (status) {
id = ffs(status) - 1;
status &= ~BIT(id);
- irq = irq_find_mapping(pa->domain, HWIRQ(sid, per, id, apid));
+ irq = irq_find_mapping(pmic_arb->domain,
+ spec_to_hwirq(sid, per, id, apid));
if (irq == 0) {
- cleanup_irq(pa, apid, id);
+ cleanup_irq(pmic_arb, apid, id);
continue;
}
generic_handle_irq(irq);
@@ -515,11 +512,11 @@ static void periph_interrupt(struct spmi_pmic_arb *pa, u16 apid)
static void pmic_arb_chained_irq(struct irq_desc *desc)
{
- struct spmi_pmic_arb *pa = irq_desc_get_handler_data(desc);
+ struct spmi_pmic_arb *pmic_arb = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
- void __iomem *intr = pa->intr;
- int first = pa->min_apid >> 5;
- int last = pa->max_apid >> 5;
+ void __iomem *intr = pmic_arb->intr;
+ int first = pmic_arb->min_apid >> 5;
+ int last = pmic_arb->max_apid >> 5;
u32 status, enable;
int i, id, apid;
@@ -527,15 +524,15 @@ static void pmic_arb_chained_irq(struct irq_desc *desc)
for (i = first; i <= last; ++i) {
status = readl_relaxed(intr +
- pa->ver_ops->owner_acc_status(pa->ee, i));
+ pmic_arb->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 +
- pa->ver_ops->acc_enable(apid));
+ pmic_arb->ver_ops->acc_enable(apid));
if (enable & SPMI_PIC_ACC_ENABLE_BIT)
- periph_interrupt(pa, apid);
+ periph_interrupt(pmic_arb, apid);
}
}
@@ -544,12 +541,13 @@ static void pmic_arb_chained_irq(struct irq_desc *desc)
static void qpnpint_irq_ack(struct irq_data *d)
{
- struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d);
- u8 irq = HWIRQ_IRQ(d->hwirq);
- u16 apid = HWIRQ_APID(d->hwirq);
+ struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+ u8 irq = hwirq_to_irq(d->hwirq);
+ u16 apid = hwirq_to_apid(d->hwirq);
u8 data;
- writel_relaxed(BIT(irq), pa->intr + pa->ver_ops->irq_clear(apid));
+ writel_relaxed(BIT(irq), pmic_arb->intr +
+ pmic_arb->ver_ops->irq_clear(apid));
data = BIT(irq);
qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &data, 1);
@@ -557,7 +555,7 @@ static void qpnpint_irq_ack(struct irq_data *d)
static void qpnpint_irq_mask(struct irq_data *d)
{
- u8 irq = HWIRQ_IRQ(d->hwirq);
+ u8 irq = hwirq_to_irq(d->hwirq);
u8 data = BIT(irq);
qpnpint_spmi_write(d, QPNPINT_REG_EN_CLR, &data, 1);
@@ -565,13 +563,13 @@ static void qpnpint_irq_mask(struct irq_data *d)
static void qpnpint_irq_unmask(struct irq_data *d)
{
- struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d);
- u8 irq = HWIRQ_IRQ(d->hwirq);
- u16 apid = HWIRQ_APID(d->hwirq);
+ struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+ u8 irq = hwirq_to_irq(d->hwirq);
+ u16 apid = hwirq_to_apid(d->hwirq);
u8 buf[2];
writel_relaxed(SPMI_PIC_ACC_ENABLE_BIT,
- pa->intr + pa->ver_ops->acc_enable(apid));
+ pmic_arb->intr + pmic_arb->ver_ops->acc_enable(apid));
qpnpint_spmi_read(d, QPNPINT_REG_EN_SET, &buf[0], 1);
if (!(buf[0] & BIT(irq))) {
@@ -589,7 +587,7 @@ static void qpnpint_irq_unmask(struct irq_data *d)
static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type)
{
struct spmi_pmic_arb_qpnpint_type type;
- u8 irq = HWIRQ_IRQ(d->hwirq);
+ u8 irq = hwirq_to_irq(d->hwirq);
u8 bit_mask_irq = BIT(irq);
qpnpint_spmi_read(d, QPNPINT_REG_SET_TYPE, &type, sizeof(type));
@@ -626,7 +624,7 @@ static int qpnpint_get_irqchip_state(struct irq_data *d,
enum irqchip_irq_state which,
bool *state)
{
- u8 irq = HWIRQ_IRQ(d->hwirq);
+ u8 irq = hwirq_to_irq(d->hwirq);
u8 status = 0;
if (which != IRQCHIP_STATE_LINE_LEVEL)
@@ -656,12 +654,11 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d,
unsigned long *out_hwirq,
unsigned int *out_type)
{
- struct spmi_pmic_arb *pa = d->host_data;
+ struct spmi_pmic_arb *pmic_arb = d->host_data;
int rc;
u16 apid;
- dev_dbg(&pa->spmic->dev,
- "intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n",
+ dev_dbg(&pmic_arb->spmic->dev, "intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n",
intspec[0], intspec[1], intspec[2]);
if (irq_domain_get_of_node(d) != controller)
@@ -671,25 +668,24 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d,
if (intspec[0] > 0xF || intspec[1] > 0xFF || intspec[2] > 0x7)
return -EINVAL;
- rc = pa->ver_ops->ppid_to_apid(pa, intspec[0],
- (intspec[1] << 8), &apid);
+ rc = pmic_arb->ver_ops->ppid_to_apid(pmic_arb, intspec[0],
+ (intspec[1] << 8), &apid);
if (rc < 0) {
- dev_err(&pa->spmic->dev,
- "failed to xlate sid = 0x%x, periph = 0x%x, irq = %x rc = %d\n",
+ dev_err(&pmic_arb->spmic->dev, "failed to xlate sid = 0x%x, periph = 0x%x, irq = %x rc = %d\n",
intspec[0], intspec[1], intspec[2], rc);
return rc;
}
/* Keep track of {max,min}_apid for bounding search during interrupt */
- if (apid > pa->max_apid)
- pa->max_apid = apid;
- if (apid < pa->min_apid)
- pa->min_apid = apid;
+ if (apid > pmic_arb->max_apid)
+ pmic_arb->max_apid = apid;
+ if (apid < pmic_arb->min_apid)
+ pmic_arb->min_apid = apid;
- *out_hwirq = HWIRQ(intspec[0], intspec[1], intspec[2], apid);
+ *out_hwirq = spec_to_hwirq(intspec[0], intspec[1], intspec[2], apid);
*out_type = intspec[3] & IRQ_TYPE_SENSE_MASK;
- dev_dbg(&pa->spmic->dev, "out_hwirq = %lu\n", *out_hwirq);
+ dev_dbg(&pmic_arb->spmic->dev, "out_hwirq = %lu\n", *out_hwirq);
return 0;
}
@@ -698,9 +694,9 @@ static int qpnpint_irq_domain_map(struct irq_domain *d,
unsigned int virq,
irq_hw_number_t hwirq)
{
- struct spmi_pmic_arb *pa = d->host_data;
+ struct spmi_pmic_arb *pmic_arb = d->host_data;
- dev_dbg(&pa->spmic->dev, "virq = %u, hwirq = %lu\n", virq, hwirq);
+ dev_dbg(&pmic_arb->spmic->dev, "virq = %u, hwirq = %lu\n", virq, hwirq);
irq_set_chip_and_handler(virq, &pmic_arb_irqchip, handle_level_irq);
irq_set_chip_data(virq, d->host_data);
@@ -708,24 +704,24 @@ static int qpnpint_irq_domain_map(struct irq_domain *d,
return 0;
}
-static int
-pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid)
+static int pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pmic_arb, u8 sid,
+ u16 addr, u16 *apid)
{
u16 ppid = sid << 8 | ((addr >> 8) & 0xFF);
- u32 *mapping_table = pa->mapping_table;
+ u32 *mapping_table = pmic_arb->mapping_table;
int index = 0, i;
u16 apid_valid;
u32 data;
- apid_valid = pa->ppid_to_apid[ppid];
- if (apid_valid & PMIC_ARB_CHAN_VALID) {
- *apid = (apid_valid & ~PMIC_ARB_CHAN_VALID);
+ apid_valid = pmic_arb->ppid_to_apid[ppid];
+ if (apid_valid & PMIC_ARB_APID_VALID) {
+ *apid = apid_valid & ~PMIC_ARB_APID_VALID;
return 0;
}
for (i = 0; i < SPMI_MAPPING_TABLE_TREE_DEPTH; ++i) {
- if (!test_and_set_bit(index, pa->mapping_table_valid))
- mapping_table[index] = readl_relaxed(pa->cnfg +
+ if (!test_and_set_bit(index, pmic_arb->mapping_table_valid))
+ mapping_table[index] = readl_relaxed(pmic_arb->cnfg +
SPMI_MAPPING_TABLE_REG(index));
data = mapping_table[index];
@@ -735,9 +731,9 @@ static int qpnpint_irq_domain_map(struct irq_domain *d,
index = SPMI_MAPPING_BIT_IS_1_RESULT(data);
} else {
*apid = SPMI_MAPPING_BIT_IS_1_RESULT(data);
- pa->ppid_to_apid[ppid]
- = *apid | PMIC_ARB_CHAN_VALID;
- pa->apid_data[*apid].ppid = ppid;
+ pmic_arb->ppid_to_apid[ppid]
+ = *apid | PMIC_ARB_APID_VALID;
+ pmic_arb->apid_data[*apid].ppid = ppid;
return 0;
}
} else {
@@ -745,9 +741,9 @@ static int qpnpint_irq_domain_map(struct irq_domain *d,
index = SPMI_MAPPING_BIT_IS_0_RESULT(data);
} else {
*apid = SPMI_MAPPING_BIT_IS_0_RESULT(data);
- pa->ppid_to_apid[ppid]
- = *apid | PMIC_ARB_CHAN_VALID;
- pa->apid_data[*apid].ppid = ppid;
+ pmic_arb->ppid_to_apid[ppid]
+ = *apid | PMIC_ARB_APID_VALID;
+ pmic_arb->apid_data[*apid].ppid = ppid;
return 0;
}
}
@@ -757,14 +753,14 @@ static int qpnpint_irq_domain_map(struct irq_domain *d,
}
/* v1 offset per ee */
-static int
-pmic_arb_offset_v1(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u32 *offset)
+static int pmic_arb_offset_v1(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+ u32 *offset)
{
- *offset = 0x800 + 0x80 * pa->channel;
+ *offset = 0x800 + 0x80 * pmic_arb->channel;
return 0;
}
-static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pa, u16 ppid)
+static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pmic_arb, u16 ppid)
{
u32 regval, offset;
u16 apid;
@@ -774,61 +770,61 @@ 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++) {
- offset = PMIC_ARB_REG_CHNL(apid);
- if (offset >= pa->core_size)
+ for (apid = pmic_arb->last_apid; ; apid++) {
+ offset = PMIC_ARB_REG_APID(apid);
+ if (offset >= pmic_arb->core_size)
break;
- regval = readl_relaxed(pa->cnfg +
+ regval = readl_relaxed(pmic_arb->cnfg +
SPMI_OWNERSHIP_TABLE_REG(apid));
- pa->apid_data[apid].owner = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
+ pmic_arb->apid_data[apid].owner =
+ SPMI_OWNERSHIP_PERIPH2OWNER(regval);
- regval = readl_relaxed(pa->core + offset);
+ regval = readl_relaxed(pmic_arb->core + offset);
if (!regval)
continue;
id = (regval >> 8) & PMIC_ARB_PPID_MASK;
- pa->ppid_to_apid[id] = apid | PMIC_ARB_CHAN_VALID;
- pa->apid_data[apid].ppid = id;
+ pmic_arb->ppid_to_apid[id] = apid | PMIC_ARB_APID_VALID;
+ pmic_arb->apid_data[apid].ppid = id;
if (id == ppid) {
- apid |= PMIC_ARB_CHAN_VALID;
+ apid |= PMIC_ARB_APID_VALID;
break;
}
}
- pa->last_apid = apid & ~PMIC_ARB_CHAN_VALID;
+ pmic_arb->last_apid = apid & ~PMIC_ARB_APID_VALID;
return apid;
}
-
-static int
-pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid)
+static int pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pmic_arb, u8 sid,
+ u16 addr, u16 *apid)
{
u16 ppid = (sid << 8) | (addr >> 8);
u16 apid_valid;
- apid_valid = pa->ppid_to_apid[ppid];
- if (!(apid_valid & PMIC_ARB_CHAN_VALID))
- apid_valid = pmic_arb_find_apid(pa, ppid);
- if (!(apid_valid & PMIC_ARB_CHAN_VALID))
+ apid_valid = pmic_arb->ppid_to_apid[ppid];
+ if (!(apid_valid & PMIC_ARB_APID_VALID))
+ apid_valid = pmic_arb_find_apid(pmic_arb, ppid);
+ if (!(apid_valid & PMIC_ARB_APID_VALID))
return -ENODEV;
- *apid = (apid_valid & ~PMIC_ARB_CHAN_VALID);
+ *apid = apid_valid & ~PMIC_ARB_APID_VALID;
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)
+static int pmic_arb_offset_v2(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+ u32 *offset)
{
u16 apid;
int rc;
- rc = pmic_arb_ppid_to_apid_v2(pa, sid, addr, &apid);
+ rc = pmic_arb_ppid_to_apid_v2(pmic_arb, sid, addr, &apid);
if (rc < 0)
return rc;
- *offset = 0x1000 * pa->ee + 0x8000 * apid;
+ *offset = 0x1000 * pmic_arb->ee + 0x8000 * apid;
return 0;
}
@@ -930,22 +926,22 @@ static u32 pmic_arb_irq_clear_v2(u16 n)
static int spmi_pmic_arb_probe(struct platform_device *pdev)
{
- struct spmi_pmic_arb *pa;
+ struct spmi_pmic_arb *pmic_arb;
struct spmi_controller *ctrl;
struct resource *res;
void __iomem *core;
u32 channel, ee, hw_ver;
int err;
- ctrl = spmi_controller_alloc(&pdev->dev, sizeof(*pa));
+ ctrl = spmi_controller_alloc(&pdev->dev, sizeof(*pmic_arb));
if (!ctrl)
return -ENOMEM;
- pa = spmi_controller_get_drvdata(ctrl);
- pa->spmic = ctrl;
+ pmic_arb = spmi_controller_get_drvdata(ctrl);
+ pmic_arb->spmic = ctrl;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
- pa->core_size = resource_size(res);
+ pmic_arb->core_size = resource_size(res);
core = devm_ioremap_resource(&ctrl->dev, res);
if (IS_ERR(core)) {
@@ -953,9 +949,10 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
goto err_put_ctrl;
}
- pa->ppid_to_apid = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PPID,
- sizeof(*pa->ppid_to_apid), GFP_KERNEL);
- if (!pa->ppid_to_apid) {
+ pmic_arb->ppid_to_apid = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PPID,
+ sizeof(*pmic_arb->ppid_to_apid),
+ GFP_KERNEL);
+ if (!pmic_arb->ppid_to_apid) {
err = -ENOMEM;
goto err_put_ctrl;
}
@@ -963,54 +960,54 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
hw_ver = readl_relaxed(core + PMIC_ARB_VERSION);
if (hw_ver < PMIC_ARB_VERSION_V2_MIN) {
- pa->ver_ops = &pmic_arb_v1;
- pa->wr_base = core;
- pa->rd_base = core;
+ pmic_arb->ver_ops = &pmic_arb_v1;
+ pmic_arb->wr_base = core;
+ pmic_arb->rd_base = core;
} else {
- pa->core = core;
+ pmic_arb->core = core;
if (hw_ver < PMIC_ARB_VERSION_V3_MIN)
- pa->ver_ops = &pmic_arb_v2;
+ pmic_arb->ver_ops = &pmic_arb_v2;
else
- pa->ver_ops = &pmic_arb_v3;
+ pmic_arb->ver_ops = &pmic_arb_v3;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"obsrvr");
- pa->rd_base = devm_ioremap_resource(&ctrl->dev, res);
- if (IS_ERR(pa->rd_base)) {
- err = PTR_ERR(pa->rd_base);
+ pmic_arb->rd_base = devm_ioremap_resource(&ctrl->dev, res);
+ if (IS_ERR(pmic_arb->rd_base)) {
+ err = PTR_ERR(pmic_arb->rd_base);
goto err_put_ctrl;
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"chnls");
- pa->wr_base = devm_ioremap_resource(&ctrl->dev, res);
- if (IS_ERR(pa->wr_base)) {
- err = PTR_ERR(pa->wr_base);
+ pmic_arb->wr_base = devm_ioremap_resource(&ctrl->dev, res);
+ if (IS_ERR(pmic_arb->wr_base)) {
+ err = PTR_ERR(pmic_arb->wr_base);
goto err_put_ctrl;
}
}
dev_info(&ctrl->dev, "PMIC arbiter version %s (0x%x)\n",
- pa->ver_ops->ver_str, hw_ver);
+ pmic_arb->ver_ops->ver_str, hw_ver);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "intr");
- pa->intr = devm_ioremap_resource(&ctrl->dev, res);
- if (IS_ERR(pa->intr)) {
- err = PTR_ERR(pa->intr);
+ pmic_arb->intr = devm_ioremap_resource(&ctrl->dev, res);
+ if (IS_ERR(pmic_arb->intr)) {
+ err = PTR_ERR(pmic_arb->intr);
goto err_put_ctrl;
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cnfg");
- pa->cnfg = devm_ioremap_resource(&ctrl->dev, res);
- if (IS_ERR(pa->cnfg)) {
- err = PTR_ERR(pa->cnfg);
+ pmic_arb->cnfg = devm_ioremap_resource(&ctrl->dev, res);
+ if (IS_ERR(pmic_arb->cnfg)) {
+ err = PTR_ERR(pmic_arb->cnfg);
goto err_put_ctrl;
}
- pa->irq = platform_get_irq_byname(pdev, "periph_irq");
- if (pa->irq < 0) {
- err = pa->irq;
+ pmic_arb->irq = platform_get_irq_byname(pdev, "periph_irq");
+ if (pmic_arb->irq < 0) {
+ err = pmic_arb->irq;
goto err_put_ctrl;
}
@@ -1027,7 +1024,7 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
goto err_put_ctrl;
}
- pa->channel = channel;
+ pmic_arb->channel = channel;
err = of_property_read_u32(pdev->dev.of_node, "qcom,ee", &ee);
if (err) {
@@ -1041,38 +1038,41 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
goto err_put_ctrl;
}
- pa->ee = ee;
+ pmic_arb->ee = ee;
- pa->mapping_table = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PERIPHS - 1,
- sizeof(*pa->mapping_table), GFP_KERNEL);
- if (!pa->mapping_table) {
+ pmic_arb->mapping_table = devm_kcalloc(&ctrl->dev,
+ PMIC_ARB_MAX_PERIPHS - 1,
+ sizeof(*pmic_arb->mapping_table),
+ GFP_KERNEL);
+ if (!pmic_arb->mapping_table) {
err = -ENOMEM;
goto err_put_ctrl;
}
/* Initialize max_apid/min_apid to the opposite bounds, during
* the irq domain translation, we are sure to update these */
- pa->max_apid = 0;
- pa->min_apid = PMIC_ARB_MAX_PERIPHS - 1;
+ pmic_arb->max_apid = 0;
+ pmic_arb->min_apid = PMIC_ARB_MAX_PERIPHS - 1;
platform_set_drvdata(pdev, ctrl);
- raw_spin_lock_init(&pa->lock);
+ raw_spin_lock_init(&pmic_arb->lock);
ctrl->cmd = pmic_arb_cmd;
ctrl->read_cmd = pmic_arb_read_cmd;
ctrl->write_cmd = pmic_arb_write_cmd;
dev_dbg(&pdev->dev, "adding irq domain\n");
- pa->domain = irq_domain_add_tree(pdev->dev.of_node,
- &pmic_arb_irq_domain_ops, pa);
- if (!pa->domain) {
+ pmic_arb->domain = irq_domain_add_tree(pdev->dev.of_node,
+ &pmic_arb_irq_domain_ops, pmic_arb);
+ if (!pmic_arb->domain) {
dev_err(&pdev->dev, "unable to create irq_domain\n");
err = -ENOMEM;
goto err_put_ctrl;
}
- irq_set_chained_handler_and_data(pa->irq, pmic_arb_chained_irq, pa);
- enable_irq_wake(pa->irq);
+ irq_set_chained_handler_and_data(pmic_arb->irq, pmic_arb_chained_irq,
+ pmic_arb);
+ enable_irq_wake(pmic_arb->irq);
err = spmi_controller_add(ctrl);
if (err)
@@ -1081,8 +1081,8 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
return 0;
err_domain_remove:
- irq_set_chained_handler_and_data(pa->irq, NULL, NULL);
- irq_domain_remove(pa->domain);
+ irq_set_chained_handler_and_data(pmic_arb->irq, NULL, NULL);
+ irq_domain_remove(pmic_arb->domain);
err_put_ctrl:
spmi_controller_put(ctrl);
return err;
@@ -1091,10 +1091,10 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
static int spmi_pmic_arb_remove(struct platform_device *pdev)
{
struct spmi_controller *ctrl = platform_get_drvdata(pdev);
- struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl);
+ struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
spmi_controller_remove(ctrl);
- irq_set_chained_handler_and_data(pa->irq, NULL, NULL);
- irq_domain_remove(pa->domain);
+ irq_set_chained_handler_and_data(pmic_arb->irq, NULL, NULL);
+ irq_domain_remove(pmic_arb->domain);
spmi_controller_put(ctrl);
return 0;
}
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* Re: [PATCH V1 02/12] spmi: pmic-arb: rename pa_xx to pmic_arb_xx and other cleanup
2017-07-20 7:31 ` [PATCH V1 02/12] spmi: pmic-arb: rename pa_xx to pmic_arb_xx and other cleanup Kiran Gunda
@ 2017-07-28 0:00 ` Stephen Boyd
2017-07-28 5:54 ` kgunda
0 siblings, 1 reply; 23+ messages in thread
From: Stephen Boyd @ 2017-07-28 0:00 UTC (permalink / raw)
To: Kiran Gunda
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm
On 07/20, Kiran Gunda wrote:
> This patch cleans up the following.
>
> - Rename the "pa" to "pmic_arb".
> - Rename the spmi_pmic_arb *dev to spmi_pmic_arb *pmic_arb.
> - Rename the pa_{read,write}_data() functions to
> pmic_arb_{read,write}_data().
> - Rename channel to APID.
> - Rename the HWIRQ_*() macros to hwirq_to_*().
>
> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
> ---
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Thanks. objdiff doesn't show any diff anymore so I'm much more
confident this doesn't change any functionality.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply [flat|nested] 23+ messages in thread* Re: [PATCH V1 02/12] spmi: pmic-arb: rename pa_xx to pmic_arb_xx and other cleanup
2017-07-28 0:00 ` Stephen Boyd
@ 2017-07-28 5:54 ` kgunda
0 siblings, 0 replies; 23+ messages in thread
From: kgunda @ 2017-07-28 5:54 UTC (permalink / raw)
To: Stephen Boyd
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm
On 2017-07-28 05:30, Stephen Boyd wrote:
> On 07/20, Kiran Gunda wrote:
>> This patch cleans up the following.
>>
>> - Rename the "pa" to "pmic_arb".
>> - Rename the spmi_pmic_arb *dev to spmi_pmic_arb *pmic_arb.
>> - Rename the pa_{read,write}_data() functions to
>> pmic_arb_{read,write}_data().
>> - Rename channel to APID.
>> - Rename the HWIRQ_*() macros to hwirq_to_*().
>>
>> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
>> ---
>
> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
>
> Thanks. objdiff doesn't show any diff anymore so I'm much more
> confident this doesn't change any functionality.
Thanks for introducing me a nice tool !
^ permalink raw reply [flat|nested] 23+ messages in thread
* [PATCH V1 03/12] spmi: pmic-arb: clean up pmic_arb_find_apid function
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 01/12] spmi: pmic-arb: remove the read/write access checks Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 02/12] spmi: pmic-arb: rename pa_xx to pmic_arb_xx and other cleanup Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-28 1:18 ` Stephen Boyd
2017-07-20 7:31 ` [PATCH V1 04/12] spmi: pmic-arb: optimize qpnpint_irq_set_type function Kiran Gunda
` (8 subsequent siblings)
11 siblings, 1 reply; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
Clean up the pmic_arb_find_apid() by using the local
variables to improve the code readability.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 530fa11..cd78665 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -762,23 +762,22 @@ static int pmic_arb_offset_v1(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pmic_arb, u16 ppid)
{
+ struct apid_data *apidd = &pmic_arb->apid_data[pmic_arb->last_apid];
u32 regval, offset;
- u16 apid;
- u16 id;
+ u16 id, apid;
/*
- * PMIC_ARB_REG_CHNL is a table in HW mapping channel to ppid.
+ * PMIC_ARB_REG_APID is a table in HW mapping apid to ppid.
* ppid_to_apid is an in-memory invert of that table.
*/
- for (apid = pmic_arb->last_apid; ; apid++) {
+ for (apid = pmic_arb->last_apid; ; apid++, apidd++) {
offset = PMIC_ARB_REG_APID(apid);
if (offset >= pmic_arb->core_size)
break;
regval = readl_relaxed(pmic_arb->cnfg +
- SPMI_OWNERSHIP_TABLE_REG(apid));
- pmic_arb->apid_data[apid].owner =
- SPMI_OWNERSHIP_PERIPH2OWNER(regval);
+ SPMI_OWNERSHIP_TABLE_REG(apid));
+ apidd->owner = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
regval = readl_relaxed(pmic_arb->core + offset);
if (!regval)
@@ -786,7 +785,7 @@ static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pmic_arb, u16 ppid)
id = (regval >> 8) & PMIC_ARB_PPID_MASK;
pmic_arb->ppid_to_apid[id] = apid | PMIC_ARB_APID_VALID;
- pmic_arb->apid_data[apid].ppid = id;
+ apidd->ppid = id;
if (id == ppid) {
apid |= PMIC_ARB_APID_VALID;
break;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* Re: [PATCH V1 03/12] spmi: pmic-arb: clean up pmic_arb_find_apid function
2017-07-20 7:31 ` [PATCH V1 03/12] spmi: pmic-arb: clean up pmic_arb_find_apid function Kiran Gunda
@ 2017-07-28 1:18 ` Stephen Boyd
2017-07-28 5:33 ` kgunda
0 siblings, 1 reply; 23+ messages in thread
From: Stephen Boyd @ 2017-07-28 1:18 UTC (permalink / raw)
To: Kiran Gunda
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm
On 07/20, Kiran Gunda wrote:
> Clean up the pmic_arb_find_apid() by using the local
> variables to improve the code readability.
>
> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
> ---
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
One nit below:
> break;
>
> regval = readl_relaxed(pmic_arb->cnfg +
> - SPMI_OWNERSHIP_TABLE_REG(apid));
> - pmic_arb->apid_data[apid].owner =
> - SPMI_OWNERSHIP_PERIPH2OWNER(regval);
> + SPMI_OWNERSHIP_TABLE_REG(apid));
This should be 7 spaces and not a tab? Originally looks like it
was 6 spaces
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [PATCH V1 03/12] spmi: pmic-arb: clean up pmic_arb_find_apid function
2017-07-28 1:18 ` Stephen Boyd
@ 2017-07-28 5:33 ` kgunda
0 siblings, 0 replies; 23+ messages in thread
From: kgunda @ 2017-07-28 5:33 UTC (permalink / raw)
To: Stephen Boyd
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm, linux-arm-msm-owner
On 2017-07-28 06:48, Stephen Boyd wrote:
> On 07/20, Kiran Gunda wrote:
>> Clean up the pmic_arb_find_apid() by using the local
>> variables to improve the code readability.
>>
>> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
>> ---
>
> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
>
> One nit below:
>
>> break;
>>
>> regval = readl_relaxed(pmic_arb->cnfg +
>> - SPMI_OWNERSHIP_TABLE_REG(apid));
>> - pmic_arb->apid_data[apid].owner =
>> - SPMI_OWNERSHIP_PERIPH2OWNER(regval);
>> + SPMI_OWNERSHIP_TABLE_REG(apid));
>
> This should be 7 spaces and not a tab? Originally looks like it
> was 6 spaces
Will fix it and send the next patch.
^ permalink raw reply [flat|nested] 23+ messages in thread
* [PATCH V1 04/12] spmi: pmic-arb: optimize qpnpint_irq_set_type function
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (2 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 03/12] spmi: pmic-arb: clean up pmic_arb_find_apid function Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-27 23:46 ` Stephen Boyd
2017-07-20 7:31 ` [PATCH V1 05/12] spmi: pmic-arb: fix memory allocation for mapping_table Kiran Gunda
` (7 subsequent siblings)
11 siblings, 1 reply; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
Optimize the qpnpint_irq_set_type() by using a local variable
to hold the handler type. Also clean up other variable usage.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index cd78665..0c98495 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -587,35 +587,35 @@ static void qpnpint_irq_unmask(struct irq_data *d)
static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type)
{
struct spmi_pmic_arb_qpnpint_type type;
+ irq_flow_handler_t flow_handler;
u8 irq = hwirq_to_irq(d->hwirq);
- u8 bit_mask_irq = BIT(irq);
qpnpint_spmi_read(d, QPNPINT_REG_SET_TYPE, &type, sizeof(type));
if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
- type.type |= bit_mask_irq;
+ type.type |= BIT(irq);
if (flow_type & IRQF_TRIGGER_RISING)
- type.polarity_high |= bit_mask_irq;
+ type.polarity_high |= BIT(irq);
if (flow_type & IRQF_TRIGGER_FALLING)
- type.polarity_low |= bit_mask_irq;
+ type.polarity_low |= BIT(irq);
+
+ flow_handler = handle_edge_irq;
} else {
if ((flow_type & (IRQF_TRIGGER_HIGH)) &&
(flow_type & (IRQF_TRIGGER_LOW)))
return -EINVAL;
- type.type &= ~bit_mask_irq; /* level trig */
+ type.type &= ~BIT(irq); /* level trig */
if (flow_type & IRQF_TRIGGER_HIGH)
- type.polarity_high |= bit_mask_irq;
+ type.polarity_high |= BIT(irq);
else
- type.polarity_low |= bit_mask_irq;
+ type.polarity_low |= BIT(irq);
+
+ flow_handler = handle_level_irq;
}
qpnpint_spmi_write(d, QPNPINT_REG_SET_TYPE, &type, sizeof(type));
-
- if (flow_type & IRQ_TYPE_EDGE_BOTH)
- irq_set_handler_locked(d, handle_edge_irq);
- else
- irq_set_handler_locked(d, handle_level_irq);
+ irq_set_handler_locked(d, flow_handler);
return 0;
}
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH V1 05/12] spmi: pmic-arb: fix memory allocation for mapping_table
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (3 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 04/12] spmi: pmic-arb: optimize qpnpint_irq_set_type function Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-27 23:49 ` Stephen Boyd
2017-07-20 7:31 ` [PATCH V1 06/12] spmi: pmic-arb: replace the writel_relaxed with __raw_writel Kiran Gunda
` (6 subsequent siblings)
11 siblings, 1 reply; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
Allocate the correct memory size (max_pmic_peripherals) for the
mapping_table that holds the apid to ppid mapping. Also use a local
variable for mapping_table for better alignment of the code.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 0c98495..b32b5b0 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -929,6 +929,7 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
struct spmi_controller *ctrl;
struct resource *res;
void __iomem *core;
+ u32 *mapping_table;
u32 channel, ee, hw_ver;
int err;
@@ -1038,16 +1039,14 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
}
pmic_arb->ee = ee;
-
- pmic_arb->mapping_table = devm_kcalloc(&ctrl->dev,
- PMIC_ARB_MAX_PERIPHS - 1,
- sizeof(*pmic_arb->mapping_table),
- GFP_KERNEL);
- if (!pmic_arb->mapping_table) {
+ mapping_table = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PERIPHS,
+ sizeof(*mapping_table), GFP_KERNEL);
+ if (!mapping_table) {
err = -ENOMEM;
goto err_put_ctrl;
}
+ pmic_arb->mapping_table = mapping_table;
/* Initialize max_apid/min_apid to the opposite bounds, during
* the irq domain translation, we are sure to update these */
pmic_arb->max_apid = 0;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* Re: [PATCH V1 05/12] spmi: pmic-arb: fix memory allocation for mapping_table
2017-07-20 7:31 ` [PATCH V1 05/12] spmi: pmic-arb: fix memory allocation for mapping_table Kiran Gunda
@ 2017-07-27 23:49 ` Stephen Boyd
2017-07-28 0:01 ` Stephen Boyd
2017-07-28 5:32 ` kgunda
0 siblings, 2 replies; 23+ messages in thread
From: Stephen Boyd @ 2017-07-27 23:49 UTC (permalink / raw)
To: Kiran Gunda
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm
On 07/20, Kiran Gunda wrote:
> Allocate the correct memory size (max_pmic_peripherals) for the
> mapping_table that holds the apid to ppid mapping. Also use a local
> variable for mapping_table for better alignment of the code.
>
> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
This needs a
Fixes: 987a9f128b8a ("spmi: pmic-arb: Support more than 128 peripherals")
right?
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply [flat|nested] 23+ messages in thread* Re: [PATCH V1 05/12] spmi: pmic-arb: fix memory allocation for mapping_table
2017-07-27 23:49 ` Stephen Boyd
@ 2017-07-28 0:01 ` Stephen Boyd
2017-07-28 5:32 ` kgunda
1 sibling, 0 replies; 23+ messages in thread
From: Stephen Boyd @ 2017-07-28 0:01 UTC (permalink / raw)
To: Kiran Gunda
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm
On 07/27, Stephen Boyd wrote:
> On 07/20, Kiran Gunda wrote:
> > Allocate the correct memory size (max_pmic_peripherals) for the
> > mapping_table that holds the apid to ppid mapping. Also use a local
> > variable for mapping_table for better alignment of the code.
> >
> > Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
>
> This needs a
>
> Fixes: 987a9f128b8a ("spmi: pmic-arb: Support more than 128 peripherals")
>
> right?
>
Otherwise it has my
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply [flat|nested] 23+ messages in thread* Re: [PATCH V1 05/12] spmi: pmic-arb: fix memory allocation for mapping_table
2017-07-27 23:49 ` Stephen Boyd
2017-07-28 0:01 ` Stephen Boyd
@ 2017-07-28 5:32 ` kgunda
1 sibling, 0 replies; 23+ messages in thread
From: kgunda @ 2017-07-28 5:32 UTC (permalink / raw)
To: Stephen Boyd
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm, linux-arm-msm-owner
On 2017-07-28 05:19, Stephen Boyd wrote:
> On 07/20, Kiran Gunda wrote:
>> Allocate the correct memory size (max_pmic_peripherals) for the
>> mapping_table that holds the apid to ppid mapping. Also use a local
>> variable for mapping_table for better alignment of the code.
>>
>> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
>
> This needs a
>
> Fixes: 987a9f128b8a ("spmi: pmic-arb: Support more than 128
> peripherals")
>
> right?
Yes. I will keep the tag and send it again.
^ permalink raw reply [flat|nested] 23+ messages in thread
* [PATCH V1 06/12] spmi: pmic-arb: replace the writel_relaxed with __raw_writel
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (4 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 05/12] spmi: pmic-arb: fix memory allocation for mapping_table Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-28 0:01 ` Stephen Boyd
2017-07-20 7:31 ` [PATCH V1 07/12] spmi: pmic-arb: return the value instead of passing by pointer Kiran Gunda
` (5 subsequent siblings)
11 siblings, 1 reply; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
Replace the writel_relaxed with __raw_writel to avoid byte swapping
in pmic_arb_write_data() function. That way the code is independent
of the CPU endianness.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index b32b5b0..a18ff99 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -230,7 +230,7 @@ static void pmic_arb_write_data(struct spmi_pmic_arb *pmic_arb, const u8 *buf,
u32 data = 0;
memcpy(&data, buf, (bc & 3) + 1);
- pmic_arb_base_write(pmic_arb, reg, data);
+ __raw_writel(data, pmic_arb->wr_base + reg);
}
static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* Re: [PATCH V1 06/12] spmi: pmic-arb: replace the writel_relaxed with __raw_writel
2017-07-20 7:31 ` [PATCH V1 06/12] spmi: pmic-arb: replace the writel_relaxed with __raw_writel Kiran Gunda
@ 2017-07-28 0:01 ` Stephen Boyd
2017-07-28 5:34 ` kgunda
0 siblings, 1 reply; 23+ messages in thread
From: Stephen Boyd @ 2017-07-28 0:01 UTC (permalink / raw)
To: Kiran Gunda
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm
On 07/20, Kiran Gunda wrote:
> Replace the writel_relaxed with __raw_writel to avoid byte swapping
> in pmic_arb_write_data() function. That way the code is independent
> of the CPU endianness.
>
> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
This also needs a Fixes tag.
Fixes: 111a10bf3e53 ("spmi: pmic-arb: rename spmi_pmic_arb_dev to spmi_pmic_arb")
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply [flat|nested] 23+ messages in thread* Re: [PATCH V1 06/12] spmi: pmic-arb: replace the writel_relaxed with __raw_writel
2017-07-28 0:01 ` Stephen Boyd
@ 2017-07-28 5:34 ` kgunda
0 siblings, 0 replies; 23+ messages in thread
From: kgunda @ 2017-07-28 5:34 UTC (permalink / raw)
To: Stephen Boyd
Cc: gregkh, Abhijeet Dharmapurikar, David Collins, linux-kernel,
linux-arm-msm, linux-arm-msm-owner
On 2017-07-28 05:31, Stephen Boyd wrote:
> On 07/20, Kiran Gunda wrote:
>> Replace the writel_relaxed with __raw_writel to avoid byte swapping
>> in pmic_arb_write_data() function. That way the code is independent
>> of the CPU endianness.
>>
>> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
>> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
>
> This also needs a Fixes tag.
>
> Fixes: 111a10bf3e53 ("spmi: pmic-arb: rename spmi_pmic_arb_dev to
> spmi_pmic_arb")
Sure. will add the tag and send the patch.
^ permalink raw reply [flat|nested] 23+ messages in thread
* [PATCH V1 07/12] spmi: pmic-arb: return the value instead of passing by pointer
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (5 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 06/12] spmi: pmic-arb: replace the writel_relaxed with __raw_writel Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 08/12] spmi: pmic-arb: use irq_chip callback to set spmi irq wakeup capability Kiran Gunda
` (4 subsequent siblings)
11 siblings, 0 replies; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
Returning the output value from a function, when it is possible, is the
better and cleaner way than passing it by the pointer. Hence, modify
the ppid_to_apid mapping function to return apid instead of passing
it by a pointer. While at it, pass the ppid as function parameter to
ppid_to_apid mapping function instead of passing the sid and addr.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 82 +++++++++++++++++++++-----------------------
1 file changed, 40 insertions(+), 42 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index a18ff99..fed2883a 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -178,11 +178,9 @@ struct spmi_pmic_arb {
*/
struct pmic_arb_ver_ops {
const char *ver_str;
- int (*ppid_to_apid)(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
- u16 *apid);
+ int (*ppid_to_apid)(struct spmi_pmic_arb *pmic_arb, u16 ppid);
/* spmi commands (read_cmd, write_cmd, cmd) functionality */
- int (*offset)(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
- u32 *offset);
+ int (*offset)(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr);
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) */
@@ -242,10 +240,11 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
u32 offset;
int rc;
- rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr, &offset);
- if (rc)
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr);
+ if (rc < 0)
return rc;
+ offset = rc;
offset += PMIC_ARB_STATUS;
while (timeout--) {
@@ -289,10 +288,11 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
int rc;
u32 offset;
- rc = pmic_arb->ver_ops->offset(pmic_arb, sid, 0, &offset);
- if (rc)
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, 0);
+ if (rc < 0)
return rc;
+ offset = rc;
cmd = ((opc | 0x40) << 27) | ((sid & 0xf) << 20);
raw_spin_lock_irqsave(&pmic_arb->lock, flags);
@@ -333,10 +333,11 @@ static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
int rc;
u32 offset;
- rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr, &offset);
- if (rc)
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr);
+ if (rc < 0)
return rc;
+ offset = rc;
if (bc >= PMIC_ARB_MAX_TRANS_BYTES) {
dev_err(&ctrl->dev, "pmic-arb supports 1..%d bytes per trans, but:%zu requested",
PMIC_ARB_MAX_TRANS_BYTES, len);
@@ -383,10 +384,11 @@ static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
int rc;
u32 offset;
- rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr, &offset);
- if (rc)
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr);
+ if (rc < 0)
return rc;
+ offset = rc;
if (bc >= PMIC_ARB_MAX_TRANS_BYTES) {
dev_err(&ctrl->dev, "pmic-arb supports 1..%d bytes per trans, but:%zu requested",
PMIC_ARB_MAX_TRANS_BYTES, len);
@@ -655,8 +657,8 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d,
unsigned int *out_type)
{
struct spmi_pmic_arb *pmic_arb = d->host_data;
+ u16 apid, ppid;
int rc;
- u16 apid;
dev_dbg(&pmic_arb->spmic->dev, "intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n",
intspec[0], intspec[1], intspec[2]);
@@ -668,14 +670,15 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d,
if (intspec[0] > 0xF || intspec[1] > 0xFF || intspec[2] > 0x7)
return -EINVAL;
- rc = pmic_arb->ver_ops->ppid_to_apid(pmic_arb, intspec[0],
- (intspec[1] << 8), &apid);
+ ppid = intspec[0] << 8 | intspec[1];
+ rc = pmic_arb->ver_ops->ppid_to_apid(pmic_arb, ppid);
if (rc < 0) {
dev_err(&pmic_arb->spmic->dev, "failed to xlate sid = 0x%x, periph = 0x%x, irq = %x rc = %d\n",
intspec[0], intspec[1], intspec[2], rc);
return rc;
}
+ apid = rc;
/* Keep track of {max,min}_apid for bounding search during interrupt */
if (apid > pmic_arb->max_apid)
pmic_arb->max_apid = apid;
@@ -704,19 +707,18 @@ static int qpnpint_irq_domain_map(struct irq_domain *d,
return 0;
}
-static int pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pmic_arb, u8 sid,
- u16 addr, u16 *apid)
+static int pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pmic_arb, u16 ppid)
{
- u16 ppid = sid << 8 | ((addr >> 8) & 0xFF);
u32 *mapping_table = pmic_arb->mapping_table;
int index = 0, i;
u16 apid_valid;
+ u16 apid;
u32 data;
apid_valid = pmic_arb->ppid_to_apid[ppid];
if (apid_valid & PMIC_ARB_APID_VALID) {
- *apid = apid_valid & ~PMIC_ARB_APID_VALID;
- return 0;
+ apid = apid_valid & ~PMIC_ARB_APID_VALID;
+ return apid;
}
for (i = 0; i < SPMI_MAPPING_TABLE_TREE_DEPTH; ++i) {
@@ -730,21 +732,21 @@ static int pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pmic_arb, u8 sid,
if (SPMI_MAPPING_BIT_IS_1_FLAG(data)) {
index = SPMI_MAPPING_BIT_IS_1_RESULT(data);
} else {
- *apid = SPMI_MAPPING_BIT_IS_1_RESULT(data);
+ apid = SPMI_MAPPING_BIT_IS_1_RESULT(data);
pmic_arb->ppid_to_apid[ppid]
- = *apid | PMIC_ARB_APID_VALID;
- pmic_arb->apid_data[*apid].ppid = ppid;
- return 0;
+ = apid | PMIC_ARB_APID_VALID;
+ pmic_arb->apid_data[apid].ppid = ppid;
+ return apid;
}
} else {
if (SPMI_MAPPING_BIT_IS_0_FLAG(data)) {
index = SPMI_MAPPING_BIT_IS_0_RESULT(data);
} else {
- *apid = SPMI_MAPPING_BIT_IS_0_RESULT(data);
+ apid = SPMI_MAPPING_BIT_IS_0_RESULT(data);
pmic_arb->ppid_to_apid[ppid]
- = *apid | PMIC_ARB_APID_VALID;
- pmic_arb->apid_data[*apid].ppid = ppid;
- return 0;
+ = apid | PMIC_ARB_APID_VALID;
+ pmic_arb->apid_data[apid].ppid = ppid;
+ return apid;
}
}
}
@@ -753,11 +755,9 @@ static int pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pmic_arb, u8 sid,
}
/* v1 offset per ee */
-static int pmic_arb_offset_v1(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
- u32 *offset)
+static int pmic_arb_offset_v1(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr)
{
- *offset = 0x800 + 0x80 * pmic_arb->channel;
- return 0;
+ return 0x800 + 0x80 * pmic_arb->channel;
}
static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pmic_arb, u16 ppid)
@@ -796,10 +796,8 @@ static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pmic_arb, u16 ppid)
return apid;
}
-static int pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pmic_arb, u8 sid,
- u16 addr, u16 *apid)
+static int pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pmic_arb, u16 ppid)
{
- u16 ppid = (sid << 8) | (addr >> 8);
u16 apid_valid;
apid_valid = pmic_arb->ppid_to_apid[ppid];
@@ -808,23 +806,23 @@ static int pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pmic_arb, u8 sid,
if (!(apid_valid & PMIC_ARB_APID_VALID))
return -ENODEV;
- *apid = apid_valid & ~PMIC_ARB_APID_VALID;
- return 0;
+ return apid_valid & ~PMIC_ARB_APID_VALID;
}
/* v2 offset per ppid and per ee */
-static int pmic_arb_offset_v2(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
- u32 *offset)
+static int pmic_arb_offset_v2(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr)
{
u16 apid;
+ u16 ppid;
int rc;
- rc = pmic_arb_ppid_to_apid_v2(pmic_arb, sid, addr, &apid);
+ ppid = sid << 8 | ((addr >> 8) & 0xFF);
+ rc = pmic_arb_ppid_to_apid_v2(pmic_arb, ppid);
if (rc < 0)
return rc;
- *offset = 0x1000 * pmic_arb->ee + 0x8000 * apid;
- return 0;
+ apid = rc;
+ return 0x1000 * pmic_arb->ee + 0x8000 * apid;
}
static u32 pmic_arb_fmt_cmd_v1(u8 opc, u8 sid, u16 addr, u8 bc)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH V1 08/12] spmi: pmic-arb: use irq_chip callback to set spmi irq wakeup capability
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (6 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 07/12] spmi: pmic-arb: return the value instead of passing by pointer Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 09/12] spmi: pmic-arb: return __iomem pointer instead of offset Kiran Gunda
` (3 subsequent siblings)
11 siblings, 0 replies; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
Currently the driver sets the pmic arbiter core interrupt as wakeup capable
irrespective of the child irqs which causes the system to wakeup
unnecessarily. To fix this, set the core interrupt as wakeup capable
only if any of the child irqs request for it. Do this by marking it as
wakeup capable in the irq_set_wake callback.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index fed2883a..e8c08c0 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -622,6 +622,13 @@ static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type)
return 0;
}
+static int qpnpint_irq_set_wake(struct irq_data *d, unsigned int on)
+{
+ struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d);
+
+ return irq_set_irq_wake(pmic_arb->irq, on);
+}
+
static int qpnpint_get_irqchip_state(struct irq_data *d,
enum irqchip_irq_state which,
bool *state)
@@ -644,9 +651,9 @@ static int qpnpint_get_irqchip_state(struct irq_data *d,
.irq_mask = qpnpint_irq_mask,
.irq_unmask = qpnpint_irq_unmask,
.irq_set_type = qpnpint_irq_set_type,
+ .irq_set_wake = qpnpint_irq_set_wake,
.irq_get_irqchip_state = qpnpint_get_irqchip_state,
- .flags = IRQCHIP_MASK_ON_SUSPEND
- | IRQCHIP_SKIP_SET_WAKE,
+ .flags = IRQCHIP_MASK_ON_SUSPEND,
};
static int qpnpint_irq_domain_dt_translate(struct irq_domain *d,
@@ -1068,8 +1075,6 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
irq_set_chained_handler_and_data(pmic_arb->irq, pmic_arb_chained_irq,
pmic_arb);
- enable_irq_wake(pmic_arb->irq);
-
err = spmi_controller_add(ctrl);
if (err)
goto err_domain_remove;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH V1 09/12] spmi: pmic-arb: return __iomem pointer instead of offset
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (7 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 08/12] spmi: pmic-arb: use irq_chip callback to set spmi irq wakeup capability Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 10/12] spmi: pmic-arb: fix a possible null pointer dereference Kiran Gunda
` (2 subsequent siblings)
11 siblings, 0 replies; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
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 | 93 ++++++++++++++++++++++++--------------------
1 file changed, 51 insertions(+), 42 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index e8c08c0..d997449 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,
@@ -475,8 +476,7 @@ 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 +
- pmic_arb->ver_ops->irq_clear(apid));
+ writel_relaxed(irq_mask, pmic_arb->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))
@@ -497,8 +497,7 @@ static void periph_interrupt(struct spmi_pmic_arb *pmic_arb, u16 apid)
u8 sid = (pmic_arb->apid_data[apid].ppid >> 8) & 0xF;
u8 per = pmic_arb->apid_data[apid].ppid & 0xFF;
- status = readl_relaxed(pmic_arb->intr +
- pmic_arb->ver_ops->irq_status(apid));
+ status = readl_relaxed(pmic_arb->ver_ops->irq_status(pmic_arb, apid));
while (status) {
id = ffs(status) - 1;
status &= ~BIT(id);
@@ -515,24 +514,25 @@ static void periph_interrupt(struct spmi_pmic_arb *pmic_arb, u16 apid)
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 +
- pmic_arb->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);
}
@@ -548,8 +548,7 @@ 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 +
- pmic_arb->ver_ops->irq_clear(apid));
+ writel_relaxed(BIT(irq), pmic_arb->ver_ops->irq_clear(pmic_arb, apid));
data = BIT(irq);
qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &data, 1);
@@ -566,12 +565,13 @@ 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))) {
@@ -842,49 +842,58 @@ 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 = {
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH V1 10/12] spmi: pmic-arb: fix a possible null pointer dereference
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (8 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 09/12] spmi: pmic-arb: return __iomem pointer instead of offset Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 11/12] spmi: pmic-arb: add support for HW version 5 Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 12/12] spmi: pmic-arb: Remove checking opc value not less than 0 Kiran Gunda
11 siblings, 0 replies; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
If "core" memory resource is not specified, then the driver could
end up dereferencing a null pointer. Fix this issue.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index d997449..c585e06 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -955,14 +955,14 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
pmic_arb->spmic = ctrl;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
- pmic_arb->core_size = resource_size(res);
-
core = devm_ioremap_resource(&ctrl->dev, res);
if (IS_ERR(core)) {
err = PTR_ERR(core);
goto err_put_ctrl;
}
+ pmic_arb->core_size = resource_size(res);
+
pmic_arb->ppid_to_apid = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PPID,
sizeof(*pmic_arb->ppid_to_apid),
GFP_KERNEL);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH V1 11/12] spmi: pmic-arb: add support for HW version 5
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (9 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 10/12] spmi: pmic-arb: fix a possible null pointer dereference Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
2017-07-20 7:31 ` [PATCH V1 12/12] spmi: pmic-arb: Remove checking opc value not less than 0 Kiran Gunda
11 siblings, 0 replies; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm
From: David Collins <collinsd@codeaurora.org>
Add support for version 5 of the SPMI PMIC arbiter. It utilizes
different offsets for registers than those found on version 3.
Also, the procedure to determine if writing and IRQ access is
allowed for a given PPID changes for version 5.
Signed-off-by: David Collins <collinsd@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 236 +++++++++++++++++++++++++++++++++++++++----
1 file changed, 214 insertions(+), 22 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index c585e06..01559d7 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -29,6 +29,7 @@
#define PMIC_ARB_VERSION 0x0000
#define PMIC_ARB_VERSION_V2_MIN 0x20010000
#define PMIC_ARB_VERSION_V3_MIN 0x30000000
+#define PMIC_ARB_VERSION_V5_MIN 0x50000000
#define PMIC_ARB_INT_EN 0x0004
/* PMIC Arbiter channel registers offsets */
@@ -39,7 +40,6 @@
#define PMIC_ARB_WDATA1 0x14
#define PMIC_ARB_RDATA0 0x18
#define PMIC_ARB_RDATA1 0x1C
-#define PMIC_ARB_REG_APID(N) (0x800 + 0x4 * (N))
/* Mapping Table */
#define SPMI_MAPPING_TABLE_REG(N) (0x0B00 + (4 * (N)))
@@ -52,6 +52,8 @@
#define SPMI_MAPPING_TABLE_TREE_DEPTH 16 /* Maximum of 16-bits */
#define PMIC_ARB_MAX_PPID BIT(12) /* PPID is 12bit */
#define PMIC_ARB_APID_VALID BIT(15)
+#define PMIC_ARB_CHAN_IS_IRQ_OWNER(reg) ((reg) & BIT(24))
+#define INVALID_EE 0xFF
/* Ownership Table */
#define SPMI_OWNERSHIP_TABLE_REG(N) (0x0700 + (4 * (N)))
@@ -86,6 +88,15 @@ enum pmic_arb_cmd_op_code {
PMIC_ARB_OP_ZERO_WRITE = 16,
};
+/*
+ * PMIC arbiter version 5 uses different register offsets for read/write vs
+ * observer channels.
+ */
+enum pmic_arb_channel {
+ PMIC_ARB_CHANNEL_RW,
+ PMIC_ARB_CHANNEL_OBS,
+};
+
/* Maximum number of support PMIC peripherals */
#define PMIC_ARB_MAX_PERIPHS 512
#define PMIC_ARB_TIMEOUT_US 100
@@ -112,7 +123,8 @@ enum pmic_arb_cmd_op_code {
struct apid_data {
u16 ppid;
- u8 owner;
+ u8 write_ee;
+ u8 irq_ee;
};
/**
@@ -175,12 +187,14 @@ struct spmi_pmic_arb {
* 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.
+ * @apid_map_offset: offset of PMIC_ARB_REG_CHNLn
*/
struct pmic_arb_ver_ops {
const char *ver_str;
int (*ppid_to_apid)(struct spmi_pmic_arb *pmic_arb, u16 ppid);
/* spmi commands (read_cmd, write_cmd, cmd) functionality */
- int (*offset)(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr);
+ int (*offset)(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+ enum pmic_arb_channel ch_type);
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) */
@@ -189,6 +203,7 @@ struct pmic_arb_ver_ops {
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);
+ u32 (*apid_map_offset)(u16 n);
};
static inline void pmic_arb_base_write(struct spmi_pmic_arb *pmic_arb,
@@ -233,7 +248,8 @@ static void pmic_arb_write_data(struct spmi_pmic_arb *pmic_arb, const u8 *buf,
}
static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
- void __iomem *base, u8 sid, u16 addr)
+ void __iomem *base, u8 sid, u16 addr,
+ enum pmic_arb_channel ch_type)
{
struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
u32 status = 0;
@@ -241,7 +257,7 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
u32 offset;
int rc;
- rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr);
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr, ch_type);
if (rc < 0)
return rc;
@@ -289,7 +305,7 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
int rc;
u32 offset;
- rc = pmic_arb->ver_ops->offset(pmic_arb, sid, 0);
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, 0, PMIC_ARB_CHANNEL_RW);
if (rc < 0)
return rc;
@@ -298,7 +314,8 @@ static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,
raw_spin_lock_irqsave(&pmic_arb->lock, flags);
pmic_arb_base_write(pmic_arb, offset + PMIC_ARB_CMD, cmd);
- rc = pmic_arb_wait_for_done(ctrl, pmic_arb->wr_base, sid, 0);
+ rc = pmic_arb_wait_for_done(ctrl, pmic_arb->wr_base, sid, 0,
+ PMIC_ARB_CHANNEL_RW);
raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
return rc;
@@ -334,7 +351,8 @@ static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
int rc;
u32 offset;
- rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr);
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr,
+ PMIC_ARB_CHANNEL_OBS);
if (rc < 0)
return rc;
@@ -359,7 +377,8 @@ static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
raw_spin_lock_irqsave(&pmic_arb->lock, flags);
pmic_arb_set_rd_cmd(pmic_arb, offset + PMIC_ARB_CMD, cmd);
- rc = pmic_arb_wait_for_done(ctrl, pmic_arb->rd_base, sid, addr);
+ rc = pmic_arb_wait_for_done(ctrl, pmic_arb->rd_base, sid, addr,
+ PMIC_ARB_CHANNEL_OBS);
if (rc)
goto done;
@@ -376,7 +395,7 @@ static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
}
static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
- u16 addr, const u8 *buf, size_t len)
+ u16 addr, const u8 *buf, size_t len)
{
struct spmi_pmic_arb *pmic_arb = spmi_controller_get_drvdata(ctrl);
unsigned long flags;
@@ -385,7 +404,8 @@ static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
int rc;
u32 offset;
- rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr);
+ rc = pmic_arb->ver_ops->offset(pmic_arb, sid, addr,
+ PMIC_ARB_CHANNEL_RW);
if (rc < 0)
return rc;
@@ -420,7 +440,8 @@ static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
/* Start the transaction */
pmic_arb_base_write(pmic_arb, offset + PMIC_ARB_CMD, cmd);
- rc = pmic_arb_wait_for_done(ctrl, pmic_arb->wr_base, sid, addr);
+ rc = pmic_arb_wait_for_done(ctrl, pmic_arb->wr_base, sid, addr,
+ PMIC_ARB_CHANNEL_RW);
raw_spin_unlock_irqrestore(&pmic_arb->lock, flags);
return rc;
@@ -680,12 +701,19 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d,
ppid = intspec[0] << 8 | intspec[1];
rc = pmic_arb->ver_ops->ppid_to_apid(pmic_arb, ppid);
if (rc < 0) {
- dev_err(&pmic_arb->spmic->dev, "failed to xlate sid = 0x%x, periph = 0x%x, irq = %x rc = %d\n",
+ dev_err(&pmic_arb->spmic->dev, "failed to xlate sid = %#x, periph = %#x, irq = %u rc = %d\n",
intspec[0], intspec[1], intspec[2], rc);
return rc;
}
apid = rc;
+ if (pmic_arb->apid_data[apid].irq_ee != pmic_arb->ee) {
+ dev_err(&pmic_arb->spmic->dev, "failed to xlate sid = %#x, periph = %#x, irq = %u: ee=%u but owner=%u\n",
+ intspec[0], intspec[1], intspec[2], pmic_arb->ee,
+ pmic_arb->apid_data[apid].irq_ee);
+ return -ENODEV;
+ }
+
/* Keep track of {max,min}_apid for bounding search during interrupt */
if (apid > pmic_arb->max_apid)
pmic_arb->max_apid = apid;
@@ -762,7 +790,8 @@ static int pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pmic_arb, u16 ppid)
}
/* v1 offset per ee */
-static int pmic_arb_offset_v1(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr)
+static int pmic_arb_offset_v1(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+ enum pmic_arb_channel ch_type)
{
return 0x800 + 0x80 * pmic_arb->channel;
}
@@ -773,18 +802,15 @@ static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pmic_arb, u16 ppid)
u32 regval, offset;
u16 id, apid;
- /*
- * PMIC_ARB_REG_APID is a table in HW mapping apid to ppid.
- * ppid_to_apid is an in-memory invert of that table.
- */
for (apid = pmic_arb->last_apid; ; apid++, apidd++) {
- offset = PMIC_ARB_REG_APID(apid);
+ offset = pmic_arb->ver_ops->apid_map_offset(apid);
if (offset >= pmic_arb->core_size)
break;
regval = readl_relaxed(pmic_arb->cnfg +
SPMI_OWNERSHIP_TABLE_REG(apid));
- apidd->owner = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
+ apidd->irq_ee = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
+ apidd->write_ee = apidd->irq_ee;
regval = readl_relaxed(pmic_arb->core + offset);
if (!regval)
@@ -816,8 +842,84 @@ static int pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pmic_arb, u16 ppid)
return apid_valid & ~PMIC_ARB_APID_VALID;
}
+static int pmic_arb_read_apid_map_v5(struct spmi_pmic_arb *pmic_arb)
+{
+ struct apid_data *apidd = pmic_arb->apid_data;
+ struct apid_data *prev_apidd;
+ u16 i, apid, ppid;
+ bool valid, is_irq_ee;
+ u32 regval, offset;
+
+ /*
+ * In order to allow multiple EEs to write to a single PPID in arbiter
+ * version 5, there is more than one APID mapped to each PPID.
+ * The owner field for each of these mappings specifies the EE which is
+ * allowed to write to the APID. The owner of the last (highest) APID
+ * for a given PPID will receive interrupts from the PPID.
+ */
+ for (i = 0; ; i++, apidd++) {
+ offset = pmic_arb->ver_ops->apid_map_offset(i);
+ if (offset >= pmic_arb->core_size)
+ break;
+
+ regval = readl_relaxed(pmic_arb->core + offset);
+ if (!regval)
+ continue;
+ ppid = (regval >> 8) & PMIC_ARB_PPID_MASK;
+ is_irq_ee = PMIC_ARB_CHAN_IS_IRQ_OWNER(regval);
+
+ regval = readl_relaxed(pmic_arb->cnfg +
+ SPMI_OWNERSHIP_TABLE_REG(i));
+ apidd->write_ee = SPMI_OWNERSHIP_PERIPH2OWNER(regval);
+
+ apidd->irq_ee = is_irq_ee ? apidd->write_ee : INVALID_EE;
+
+ valid = pmic_arb->ppid_to_apid[ppid] & PMIC_ARB_APID_VALID;
+ apid = pmic_arb->ppid_to_apid[ppid] & ~PMIC_ARB_APID_VALID;
+ prev_apidd = &pmic_arb->apid_data[apid];
+
+ if (valid && is_irq_ee &&
+ prev_apidd->write_ee == pmic_arb->ee) {
+ /*
+ * Duplicate PPID mapping after the one for this EE;
+ * override the irq owner
+ */
+ prev_apidd->irq_ee = apidd->irq_ee;
+ } else if (!valid || is_irq_ee) {
+ /* First PPID mapping or duplicate for another EE */
+ pmic_arb->ppid_to_apid[ppid] = i | PMIC_ARB_APID_VALID;
+ }
+
+ apidd->ppid = ppid;
+ pmic_arb->last_apid = i;
+ }
+
+ /* Dump the mapping table for debug purposes. */
+ dev_dbg(&pmic_arb->spmic->dev, "PPID APID Write-EE IRQ-EE\n");
+ for (ppid = 0; ppid < PMIC_ARB_MAX_PPID; ppid++) {
+ apid = pmic_arb->ppid_to_apid[ppid];
+ if (apid & PMIC_ARB_APID_VALID) {
+ apid &= ~PMIC_ARB_APID_VALID;
+ apidd = &pmic_arb->apid_data[apid];
+ dev_dbg(&pmic_arb->spmic->dev, "%#03X %3u %2u %2u\n",
+ ppid, apid, apidd->write_ee, apidd->irq_ee);
+ }
+ }
+
+ return 0;
+}
+
+static int pmic_arb_ppid_to_apid_v5(struct spmi_pmic_arb *pmic_arb, u16 ppid)
+{
+ if (!(pmic_arb->ppid_to_apid[ppid] & PMIC_ARB_APID_VALID))
+ return -ENODEV;
+
+ return pmic_arb->ppid_to_apid[ppid] & ~PMIC_ARB_APID_VALID;
+}
+
/* v2 offset per ppid and per ee */
-static int pmic_arb_offset_v2(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr)
+static int pmic_arb_offset_v2(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+ enum pmic_arb_channel ch_type)
{
u16 apid;
u16 ppid;
@@ -832,6 +934,35 @@ static int pmic_arb_offset_v2(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr)
return 0x1000 * pmic_arb->ee + 0x8000 * apid;
}
+/*
+ * v5 offset per ee and per apid for observer channels and per apid for
+ * read/write channels.
+ */
+static int pmic_arb_offset_v5(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr,
+ enum pmic_arb_channel ch_type)
+{
+ u16 apid;
+ int rc;
+ u32 offset = 0;
+ u16 ppid = (sid << 8) | (addr >> 8);
+
+ rc = pmic_arb_ppid_to_apid_v5(pmic_arb, ppid);
+ if (rc < 0)
+ return rc;
+
+ apid = rc;
+ switch (ch_type) {
+ case PMIC_ARB_CHANNEL_OBS:
+ offset = 0x10000 * pmic_arb->ee + 0x80 * apid;
+ break;
+ case PMIC_ARB_CHANNEL_RW:
+ offset = 0x10000 * apid;
+ break;
+ }
+
+ return offset;
+}
+
static u32 pmic_arb_fmt_cmd_v1(u8 opc, u8 sid, u16 addr, u8 bc)
{
return (opc << 27) | ((sid & 0xf) << 20) | (addr << 4) | (bc & 0x7);
@@ -861,6 +992,12 @@ static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
}
static void __iomem *
+pmic_arb_owner_acc_status_v5(struct spmi_pmic_arb *pmic_arb, u8 m, u16 n)
+{
+ return pmic_arb->intr + 0x10000 * m + 0x4 * n;
+}
+
+static void __iomem *
pmic_arb_acc_enable_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
{
return pmic_arb->intr + 0x200 + 0x4 * n;
@@ -873,6 +1010,12 @@ static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
}
static void __iomem *
+pmic_arb_acc_enable_v5(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+ return pmic_arb->wr_base + 0x100 + 0x10000 * n;
+}
+
+static void __iomem *
pmic_arb_irq_status_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
{
return pmic_arb->intr + 0x600 + 0x4 * n;
@@ -885,6 +1028,12 @@ static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
}
static void __iomem *
+pmic_arb_irq_status_v5(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+ return pmic_arb->wr_base + 0x104 + 0x10000 * n;
+}
+
+static void __iomem *
pmic_arb_irq_clear_v1(struct spmi_pmic_arb *pmic_arb, u16 n)
{
return pmic_arb->intr + 0xA00 + 0x4 * n;
@@ -896,6 +1045,22 @@ static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
return pmic_arb->intr + 0x8 + 0x1000 * n;
}
+static void __iomem *
+pmic_arb_irq_clear_v5(struct spmi_pmic_arb *pmic_arb, u16 n)
+{
+ return pmic_arb->wr_base + 0x108 + 0x10000 * n;
+}
+
+static u32 pmic_arb_apid_map_offset_v2(u16 n)
+{
+ return 0x800 + 0x4 * n;
+}
+
+static u32 pmic_arb_apid_map_offset_v5(u16 n)
+{
+ return 0x900 + 0x4 * n;
+}
+
static const struct pmic_arb_ver_ops pmic_arb_v1 = {
.ver_str = "v1",
.ppid_to_apid = pmic_arb_ppid_to_apid_v1,
@@ -906,6 +1071,7 @@ static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
.acc_enable = pmic_arb_acc_enable_v1,
.irq_status = pmic_arb_irq_status_v1,
.irq_clear = pmic_arb_irq_clear_v1,
+ .apid_map_offset = pmic_arb_apid_map_offset_v2,
};
static const struct pmic_arb_ver_ops pmic_arb_v2 = {
@@ -918,6 +1084,7 @@ static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
.acc_enable = pmic_arb_acc_enable_v2,
.irq_status = pmic_arb_irq_status_v2,
.irq_clear = pmic_arb_irq_clear_v2,
+ .apid_map_offset = pmic_arb_apid_map_offset_v2,
};
static const struct pmic_arb_ver_ops pmic_arb_v3 = {
@@ -930,6 +1097,20 @@ static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc)
.acc_enable = pmic_arb_acc_enable_v2,
.irq_status = pmic_arb_irq_status_v2,
.irq_clear = pmic_arb_irq_clear_v2,
+ .apid_map_offset = pmic_arb_apid_map_offset_v2,
+};
+
+static const struct pmic_arb_ver_ops pmic_arb_v5 = {
+ .ver_str = "v5",
+ .ppid_to_apid = pmic_arb_ppid_to_apid_v5,
+ .non_data_cmd = pmic_arb_non_data_cmd_v2,
+ .offset = pmic_arb_offset_v5,
+ .fmt_cmd = pmic_arb_fmt_cmd_v2,
+ .owner_acc_status = pmic_arb_owner_acc_status_v5,
+ .acc_enable = pmic_arb_acc_enable_v5,
+ .irq_status = pmic_arb_irq_status_v5,
+ .irq_clear = pmic_arb_irq_clear_v5,
+ .apid_map_offset = pmic_arb_apid_map_offset_v5,
};
static const struct irq_domain_ops pmic_arb_irq_domain_ops = {
@@ -982,8 +1163,10 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
if (hw_ver < PMIC_ARB_VERSION_V3_MIN)
pmic_arb->ver_ops = &pmic_arb_v2;
- else
+ else if (hw_ver < PMIC_ARB_VERSION_V5_MIN)
pmic_arb->ver_ops = &pmic_arb_v3;
+ else
+ pmic_arb->ver_ops = &pmic_arb_v5;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"obsrvr");
@@ -1073,6 +1256,15 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
ctrl->read_cmd = pmic_arb_read_cmd;
ctrl->write_cmd = pmic_arb_write_cmd;
+ if (hw_ver >= PMIC_ARB_VERSION_V5_MIN) {
+ err = pmic_arb_read_apid_map_v5(pmic_arb);
+ if (err) {
+ dev_err(&pdev->dev, "could not read APID->PPID mapping table, rc= %d\n",
+ err);
+ goto err_put_ctrl;
+ }
+ }
+
dev_dbg(&pdev->dev, "adding irq domain\n");
pmic_arb->domain = irq_domain_add_tree(pdev->dev.of_node,
&pmic_arb_irq_domain_ops, pmic_arb);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH V1 12/12] spmi: pmic-arb: Remove checking opc value not less than 0
2017-07-20 7:31 [PATCH V1 00/12]: spmi: pmic-arb: Support for HW v5 and other fixes Kiran Gunda
` (10 preceding siblings ...)
2017-07-20 7:31 ` [PATCH V1 11/12] spmi: pmic-arb: add support for HW version 5 Kiran Gunda
@ 2017-07-20 7:31 ` Kiran Gunda
11 siblings, 0 replies; 23+ messages in thread
From: Kiran Gunda @ 2017-07-20 7:31 UTC (permalink / raw)
To: gregkh, sboyd, Kiran Gunda, Abhijeet Dharmapurikar,
David Collins, linux-kernel
Cc: linux-arm-msm, Fenglin Wu
From: Fenglin Wu <fenglinw@codeaurora.org>
The opc parameter in pmic_arb_write_cmd() function is defined with type
u8 and it's always greater than or equal to 0. Checking that it's not
less than 0 is redundant and it can cause a forbidden warning during
compilation. Remove the check.
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/spmi/spmi-pmic-arb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 01559d7..8ab3f6d 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2015, 2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -419,7 +419,7 @@ static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
/* Check the opcode */
if (opc >= 0x40 && opc <= 0x5F)
opc = PMIC_ARB_OP_WRITE;
- else if (opc >= 0x00 && opc <= 0x0F)
+ else if (opc <= 0x0F)
opc = PMIC_ARB_OP_EXT_WRITE;
else if (opc >= 0x30 && opc <= 0x37)
opc = PMIC_ARB_OP_EXT_WRITEL;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 23+ messages in thread