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

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SARADC v1 and v2 have a different way of starting a channel, 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 10:36:22 +01:00
committed by Kever Yang
parent 7da3065afd
commit 2577525512
1 changed files with 24 additions and 6 deletions
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30
drivers/adc/rockchip-saradc.c
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@@ -38,6 +38,7 @@ struct rockchip_saradc_data {
int num_channels;
unsigned long clk_rate;
int (*channel_data)(struct udevice *dev, int channel, unsigned int *data);
int (*start_channel)(struct udevice *dev, int channel);
};
struct rockchip_saradc_priv {
@@ -88,15 +89,10 @@ int rockchip_saradc_channel_data(struct udevice *dev, int channel,
return 0;
}
int rockchip_saradc_start_channel(struct udevice *dev, int channel)
int rockchip_saradc_start_channel_v1(struct udevice *dev, int channel)
{
struct rockchip_saradc_priv *priv = dev_get_priv(dev);
if (channel < 0 || channel >= priv->data->num_channels) {
pr_err("Requested channel is invalid!");
return -EINVAL;
}
/* 8 clock periods as delay between power up and start cmd */
writel(8, &priv->regs.v1->dly_pu_soc);
@@ -104,6 +100,25 @@ int rockchip_saradc_start_channel(struct udevice *dev, int channel)
writel(SARADC_CTRL_POWER_CTRL | (channel & SARADC_CTRL_CHN_MASK) |
SARADC_CTRL_IRQ_ENABLE, &priv->regs.v1->ctrl);
return 0;
}
int rockchip_saradc_start_channel(struct udevice *dev, int channel)
{
struct rockchip_saradc_priv *priv = dev_get_priv(dev);
int ret;
if (channel < 0 || channel >= priv->data->num_channels) {
pr_err("Requested channel is invalid!");
return -EINVAL;
}
ret = priv->data->start_channel(dev, channel);
if (ret) {
pr_err("Error starting channel, %d!", ret);
return ret;
}
priv->active_channel = channel;
return 0;
@@ -193,6 +208,7 @@ static const struct rockchip_saradc_data saradc_data = {
.num_channels = 3,
.clk_rate = 1000000,
.channel_data = rockchip_saradc_channel_data_v1,
.start_channel = rockchip_saradc_start_channel_v1,
};
static const struct rockchip_saradc_data rk3066_tsadc_data = {
@@ -200,6 +216,7 @@ static const struct rockchip_saradc_data rk3066_tsadc_data = {
.num_channels = 2,
.clk_rate = 50000,
.channel_data = rockchip_saradc_channel_data_v1,
.start_channel = rockchip_saradc_start_channel_v1,
};
static const struct rockchip_saradc_data rk3399_saradc_data = {
@@ -207,6 +224,7 @@ static const struct rockchip_saradc_data rk3399_saradc_data = {
.num_channels = 6,
.clk_rate = 1000000,
.channel_data = rockchip_saradc_channel_data_v1,
.start_channel = rockchip_saradc_start_channel_v1,
};
static const struct udevice_id rockchip_saradc_ids[] = {