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rockchip: adc: rockchip-saradc: factor out channel_data callback

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SARADC v1 and v2 have a different way of reading data, therefore let's
abstract this function so that it can be provided from the udevice.data
pointer.

Cc: Quentin Schulz <foss+uboot@0leil.net>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
This commit is contained in:
Quentin Schulz
2024-03-14 10:36:21 +01:00
committed by Kever Yang
parent 0707bfdf23
commit 7da3065afd
1 changed files with 30 additions and 9 deletions
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39
drivers/adc/rockchip-saradc.c
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@@ -37,6 +37,7 @@ struct rockchip_saradc_data {
int num_bits;
int num_channels;
unsigned long clk_rate;
int (*channel_data)(struct udevice *dev, int channel, unsigned int *data);
};
struct rockchip_saradc_priv {
@@ -45,16 +46,10 @@ struct rockchip_saradc_priv {
const struct rockchip_saradc_data *data;
};
int rockchip_saradc_channel_data(struct udevice *dev, int channel,
unsigned int *data)
int rockchip_saradc_channel_data_v1(struct udevice *dev, int channel,
unsigned int *data)
{
struct rockchip_saradc_priv *priv = dev_get_priv(dev);
struct adc_uclass_plat *uc_pdata = dev_get_uclass_plat(dev);
if (channel != priv->active_channel) {
pr_err("Requested channel is not active!");
return -EINVAL;
}
if ((readl(&priv->regs.v1->ctrl) & SARADC_CTRL_IRQ_STATUS) !=
SARADC_CTRL_IRQ_STATUS)
@@ -62,7 +57,6 @@ int rockchip_saradc_channel_data(struct udevice *dev, int channel,
/* Read value */
*data = readl(&priv->regs.v1->data);
*data &= uc_pdata->data_mask;
/* Power down adc */
writel(0, &priv->regs.v1->ctrl);
@@ -70,6 +64,30 @@ int rockchip_saradc_channel_data(struct udevice *dev, int channel,
return 0;
}
int rockchip_saradc_channel_data(struct udevice *dev, int channel,
unsigned int *data)
{
struct rockchip_saradc_priv *priv = dev_get_priv(dev);
struct adc_uclass_plat *uc_pdata = dev_get_uclass_plat(dev);
int ret;
if (channel != priv->active_channel) {
pr_err("Requested channel is not active!");
return -EINVAL;
}
ret = priv->data->channel_data(dev, channel, data);
if (ret) {
if (ret != -EBUSY)
pr_err("Error reading channel data, %d!", ret);
return ret;
}
*data &= uc_pdata->data_mask;
return 0;
}
int rockchip_saradc_start_channel(struct udevice *dev, int channel)
{
struct rockchip_saradc_priv *priv = dev_get_priv(dev);
@@ -174,18 +192,21 @@ static const struct rockchip_saradc_data saradc_data = {
.num_bits = 10,
.num_channels = 3,
.clk_rate = 1000000,
.channel_data = rockchip_saradc_channel_data_v1,
};
static const struct rockchip_saradc_data rk3066_tsadc_data = {
.num_bits = 12,
.num_channels = 2,
.clk_rate = 50000,
.channel_data = rockchip_saradc_channel_data_v1,
};
static const struct rockchip_saradc_data rk3399_saradc_data = {
.num_bits = 10,
.num_channels = 6,
.clk_rate = 1000000,
.channel_data = rockchip_saradc_channel_data_v1,
};
static const struct udevice_id rockchip_saradc_ids[] = {