On 4/11/2024 10:05 PM, Dmitry Baryshkov wrote:
On Thu, 11 Apr 2024 at 16:45, Fenglin Wu <quic_fenglinw@xxxxxxxxxxx> wrote:
On 2024/4/11 18:58, Dmitry Baryshkov wrote:
On Thu, 11 Apr 2024 at 11:32, Fenglin Wu via B4 Relay
<devnull+quic_fenglinw.quicinc.com@xxxxxxxxxx> wrote:
From: Fenglin Wu <quic_fenglinw@xxxxxxxxxxx>
Currently, vibrator control register addresses are hard coded,
including the base address and offsets, it's not flexible to
support new SPMI vibrator module which is usually included in
different PMICs with different base address. Refactor it by using
the base address defined in devicetree.
Signed-off-by: Fenglin Wu <quic_fenglinw@xxxxxxxxxxx>
---
drivers/input/misc/pm8xxx-vibrator.c | 42 ++++++++++++++++++++++++------------
1 file changed, 28 insertions(+), 14 deletions(-)
diff --git a/drivers/input/misc/pm8xxx-vibrator.c b/drivers/input/misc/pm8xxx-vibrator.c
index 89f0f1c810d8..2959edca8eb9 100644
--- a/drivers/input/misc/pm8xxx-vibrator.c
+++ b/drivers/input/misc/pm8xxx-vibrator.c
@@ -20,26 +20,26 @@
#define MAX_FF_SPEED 0xff
struct pm8xxx_regs {
- unsigned int enable_addr;
+ unsigned int enable_offset;
unsigned int enable_mask;
- unsigned int drv_addr;
+ unsigned int drv_offset;
unsigned int drv_mask;
unsigned int drv_shift;
unsigned int drv_en_manual_mask;
};
static const struct pm8xxx_regs pm8058_regs = {
- .drv_addr = 0x4A,
+ .drv_offset = 0x4A,
If the DT already has reg = <0x4a> and you add drv_offset = 0x4a,
which register will be used by the driver?
Also, while we are at it, please downcase all the hex numbers that you
are touching.
For SSBI vibrator, the "reg" value defined in DT is not used, see below.
.drv_mask = 0xf8,
.drv_shift = 3,
.drv_en_manual_mask = 0xfc,
};
static struct pm8xxx_regs pm8916_regs = {
- .enable_addr = 0xc046,
+ .enable_offset = 0x46,
[...]
@@ -170,7 +173,7 @@ static int pm8xxx_vib_probe(struct platform_device *pdev)
struct pm8xxx_vib *vib;
struct input_dev *input_dev;
int error;
- unsigned int val;
+ unsigned int val, reg_base = 0;
const struct pm8xxx_regs *regs;
vib = devm_kzalloc(&pdev->dev, sizeof(*vib), GFP_KERNEL);
@@ -190,13 +193,24 @@ static int pm8xxx_vib_probe(struct platform_device *pdev)
regs = of_device_get_match_data(&pdev->dev);
+ if (regs->enable_offset != 0) {
+ error = fwnode_property_read_u32(pdev->dev.fwnode, "reg", ®_base);
+ if (error < 0) {
+ dev_err(&pdev->dev, "Failed to read reg address, rc=%d\n", error);
+ return error;
+ }
+ }
+
+ vib->enable_addr = reg_base + regs->enable_offset;
+ vib->drv_addr = reg_base + regs->drv_offset;
The reg_base is initialized as 0 and it is assigned as the "reg" value
defined in DT only for SPMI vibrators.
Please don't. This is counterintuitive. We have reg in DT. We should
be using it.
Hmm, the original driver doesn't use the reg value defined in DT at all,
Anyway, I can make the SSBI offset to 0, so the base address defined in
the DT will be always added regardless of SSBI or SPMI vibrator. Let me
know.
Thanks
+
/* operate in manual mode */
- error = regmap_read(vib->regmap, regs->drv_addr, &val);
+ error = regmap_read(vib->regmap, vib->drv_addr, &val);
if (error < 0)
return error;
val &= regs->drv_en_manual_mask;
- error = regmap_write(vib->regmap, regs->drv_addr, val);
+ error = regmap_write(vib->regmap, vib->drv_addr, val);
if (error < 0)
return error;
--
2.25.1
