[PATCH 2/2] mfd: sprd-sc27xx-spi: Add PMICs support for UMS9621 SoC
From: Jiansheng Wu
Date: Tue Aug 22 2023 - 03:52:48 EST
There are three PMICs (UMP9620/21/22) on Unisoc's UMS9621 chip.
UMP9620 is a master PMIC, the others are slave ones. Slave PMICs
don't have irq functions, which is different from master device,
such as SC27xx series and UMP9620, etc.
Signed-off-by: Jiansheng Wu <jiansheng.wu@xxxxxxxxxx>
---
drivers/mfd/sprd-sc27xx-spi.c | 104 +++++++++++++++++++++++++---------
1 file changed, 77 insertions(+), 27 deletions(-)
diff --git a/drivers/mfd/sprd-sc27xx-spi.c b/drivers/mfd/sprd-sc27xx-spi.c
index d21f32cc784d..aa91301568a9 100644
--- a/drivers/mfd/sprd-sc27xx-spi.c
+++ b/drivers/mfd/sprd-sc27xx-spi.c
@@ -24,6 +24,10 @@
#define SPRD_SC2731_IRQ_BASE 0x140
#define SPRD_SC2731_IRQ_NUMS 16
#define SPRD_SC2731_CHG_DET 0xedc
+#define SPRD_UMP9620_IRQ_BASE 0x80
+#define SPRD_UMP9620_IRQ_NUMS 11
+#define SPRD_UMP9621_SLAVE_ID 0x8000
+#define SPRD_UMP9622_SLAVE_ID 0xc000
/* PMIC charger detection definition */
#define SPRD_PMIC_CHG_DET_DELAY_US 200000
@@ -45,6 +49,7 @@ struct sprd_pmic {
};
struct sprd_pmic_data {
+ u32 slave_id;
u32 irq_base;
u32 num_irqs;
u32 charger_det;
@@ -67,6 +72,19 @@ static const struct sprd_pmic_data sc2731_data = {
.charger_det = SPRD_SC2731_CHG_DET,
};
+static const struct sprd_pmic_data ump9620_data = {
+ .irq_base = SPRD_UMP9620_IRQ_BASE,
+ .num_irqs = SPRD_UMP9620_IRQ_NUMS,
+};
+
+static const struct sprd_pmic_data ump9621_data = {
+ .slave_id = SPRD_UMP9621_SLAVE_ID,
+};
+
+static const struct sprd_pmic_data ump9622_data = {
+ .slave_id = SPRD_UMP9622_SLAVE_ID,
+};
+
enum usb_charger_type sprd_pmic_detect_charger_type(struct device *dev)
{
struct spi_device *spi = to_spi_device(dev);
@@ -108,8 +126,27 @@ static int sprd_pmic_spi_write(void *context, const void *data, size_t count)
{
struct device *dev = context;
struct spi_device *spi = to_spi_device(dev);
+ const struct sprd_pmic_data *pdata;
+ int ret;
+ u32 *pmdata;
+
+ if (!pdata->slave_id) {
+ ret = spi_write(spi, data, count);
+ } else {
+ pdata = ((struct sprd_pmic *)spi_get_drvdata(spi))->pdata;
+
+ pmdata = kzalloc(count, GFP_KERNEL);
+ if (!pmdata)
+ return -ENOMEM;
+ memcpy(pmdata, data, count);
+ *pmdata += pdata->slave_id;
+ ret = spi_write(spi, (const void *)pmdata, count);
+ kfree(pmdata);
+ }
+ if (ret)
+ pr_err("pmic mfd write failed!\n");
- return spi_write(spi, data, count);
+ return ret;
}
static int sprd_pmic_spi_read(void *context,
@@ -118,6 +155,7 @@ static int sprd_pmic_spi_read(void *context,
{
struct device *dev = context;
struct spi_device *spi = to_spi_device(dev);
+ const struct sprd_pmic_data *pdata;
u32 rx_buf[2] = { 0 };
int ret;
@@ -125,11 +163,16 @@ static int sprd_pmic_spi_read(void *context,
if (reg_size != sizeof(u32) || val_size != sizeof(u32))
return -EINVAL;
+ pdata = ((struct sprd_pmic *)spi_get_drvdata(spi))->pdata;
/* Copy address to read from into first element of SPI buffer. */
memcpy(rx_buf, reg, sizeof(u32));
+ if (!pdata->slave_id)
+ rx_buf[0] += pdata->slave_id;
ret = spi_read(spi, rx_buf, 1);
- if (ret < 0)
+ if (ret < 0) {
+ pr_err("pmic mfd read failed!\n");
return ret;
+ }
memcpy(val, rx_buf, val_size);
return 0;
@@ -175,33 +218,34 @@ static int sprd_pmic_probe(struct spi_device *spi)
spi_set_drvdata(spi, ddata);
ddata->dev = &spi->dev;
- ddata->irq = spi->irq;
ddata->pdata = pdata;
- ddata->irq_chip.name = dev_name(&spi->dev);
- ddata->irq_chip.status_base =
- pdata->irq_base + SPRD_PMIC_INT_MASK_STATUS;
- ddata->irq_chip.unmask_base = pdata->irq_base + SPRD_PMIC_INT_EN;
- ddata->irq_chip.ack_base = 0;
- ddata->irq_chip.num_regs = 1;
- ddata->irq_chip.num_irqs = pdata->num_irqs;
-
- ddata->irqs = devm_kcalloc(&spi->dev,
- pdata->num_irqs, sizeof(struct regmap_irq),
- GFP_KERNEL);
- if (!ddata->irqs)
- return -ENOMEM;
-
- ddata->irq_chip.irqs = ddata->irqs;
- for (i = 0; i < pdata->num_irqs; i++)
- ddata->irqs[i].mask = BIT(i);
-
- ret = devm_regmap_add_irq_chip(&spi->dev, ddata->regmap, ddata->irq,
- IRQF_ONESHOT, 0,
- &ddata->irq_chip, &ddata->irq_data);
- if (ret) {
- dev_err(&spi->dev, "Failed to add PMIC irq chip %d\n", ret);
- return ret;
+ if (spi->irq) {
+ ddata->irq = spi->irq;
+ ddata->irq_chip.name = dev_name(&spi->dev);
+ ddata->irq_chip.status_base = pdata->irq_base + SPRD_PMIC_INT_MASK_STATUS;
+ ddata->irq_chip.unmask_base = pdata->irq_base + SPRD_PMIC_INT_EN;
+ ddata->irq_chip.ack_base = 0;
+ ddata->irq_chip.num_regs = 1;
+ ddata->irq_chip.num_irqs = pdata->num_irqs;
+
+ ddata->irqs = devm_kcalloc(&spi->dev,
+ pdata->num_irqs, sizeof(struct regmap_irq),
+ GFP_KERNEL);
+ if (!ddata->irqs)
+ return -ENOMEM;
+
+ ddata->irq_chip.irqs = ddata->irqs;
+ for (i = 0; i < pdata->num_irqs; i++)
+ ddata->irqs[i].mask = BIT(i);
+
+ ret = devm_regmap_add_irq_chip(&spi->dev, ddata->regmap, ddata->irq,
+ IRQF_ONESHOT, 0,
+ &ddata->irq_chip, &ddata->irq_data);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to add PMIC irq chip %d\n", ret);
+ return ret;
+ }
}
ret = devm_of_platform_populate(&spi->dev);
@@ -240,6 +284,9 @@ static DEFINE_SIMPLE_DEV_PM_OPS(sprd_pmic_pm_ops,
static const struct of_device_id sprd_pmic_match[] = {
{ .compatible = "sprd,sc2730", .data = &sc2730_data },
{ .compatible = "sprd,sc2731", .data = &sc2731_data },
+ { .compatible = "sprd,ump9620", .data = &ump9620_data },
+ { .compatible = "sprd,ump9621", .data = &ump9621_data },
+ { .compatible = "sprd,ump9622", .data = &ump9622_data },
{},
};
MODULE_DEVICE_TABLE(of, sprd_pmic_match);
@@ -247,6 +294,9 @@ MODULE_DEVICE_TABLE(of, sprd_pmic_match);
static const struct spi_device_id sprd_pmic_spi_ids[] = {
{ .name = "sc2730", .driver_data = (unsigned long)&sc2730_data },
{ .name = "sc2731", .driver_data = (unsigned long)&sc2731_data },
+ { .name = "ump9620", .driver_data = (unsigned long)&ump9620_data },
+ { .name = "ump9621", .driver_data = (unsigned long)&ump9621_data },
+ { .name = "ump9622", .driver_data = (unsigned long)&ump9622_data },
{},
};
MODULE_DEVICE_TABLE(spi, sprd_pmic_spi_ids);
--
2.17.1