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pwm: mediatek: Add support for MT7981

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The PWM unit on MT7981 uses different register offsets than previous
MediaTek PWM units. Add support for these new offsets and add support
for PWM on MT7981 which has 3 PWM channels, one of them is typically
used for a temperature controlled fan.
While at it, also reorder pwm_mediatek_of_data entries to restore
alphabetic order.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Daniel Golle 2023-04-21 00:23:21 +01:00 committed by Thierry Reding
parent 88c66e018a
commit 967da67a74
1 changed files with 32 additions and 9 deletions
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41
drivers/pwm/pwm-mediatek.c
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@ -38,6 +38,7 @@ struct pwm_mediatek_of_data {
unsigned int num_pwms;
bool pwm45_fixup;
bool has_ck_26m_sel;
const unsigned int *reg_offset;
};
/**
@ -59,10 +60,14 @@ struct pwm_mediatek_chip {
const struct pwm_mediatek_of_data *soc;
};
static const unsigned int pwm_mediatek_reg_offset[] = {
static const unsigned int mtk_pwm_reg_offset_v1[] = {
0x0010, 0x0050, 0x0090, 0x00d0, 0x0110, 0x0150, 0x0190, 0x0220
};
static const unsigned int mtk_pwm_reg_offset_v2[] = {
0x0080, 0x00c0, 0x0100, 0x0140, 0x0180, 0x01c0, 0x0200, 0x0240
};
static inline struct pwm_mediatek_chip *
to_pwm_mediatek_chip(struct pwm_chip *chip)
{
@ -111,7 +116,7 @@ static inline void pwm_mediatek_writel(struct pwm_mediatek_chip *chip,
unsigned int num, unsigned int offset,
u32 value)
{
writel(value, chip->regs + pwm_mediatek_reg_offset[num] + offset);
writel(value, chip->regs + chip->soc->reg_offset[num] + offset);
}
static int pwm_mediatek_config(struct pwm_chip *chip, struct pwm_device *pwm,
@ -285,60 +290,77 @@ static const struct pwm_mediatek_of_data mt2712_pwm_data = {
.num_pwms = 8,
.pwm45_fixup = false,
.has_ck_26m_sel = false,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt6795_pwm_data = {
.num_pwms = 7,
.pwm45_fixup = false,
.has_ck_26m_sel = false,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt7622_pwm_data = {
.num_pwms = 6,
.pwm45_fixup = false,
.has_ck_26m_sel = true,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt7623_pwm_data = {
.num_pwms = 5,
.pwm45_fixup = true,
.has_ck_26m_sel = false,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt7628_pwm_data = {
.num_pwms = 4,
.pwm45_fixup = true,
.has_ck_26m_sel = false,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt7629_pwm_data = {
.num_pwms = 1,
.pwm45_fixup = false,
.has_ck_26m_sel = false,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt8183_pwm_data = {
.num_pwms = 4,
.pwm45_fixup = false,
.has_ck_26m_sel = true,
};
static const struct pwm_mediatek_of_data mt8365_pwm_data = {
static const struct pwm_mediatek_of_data mt7981_pwm_data = {
.num_pwms = 3,
.pwm45_fixup = false,
.has_ck_26m_sel = true,
.reg_offset = mtk_pwm_reg_offset_v2,
};
static const struct pwm_mediatek_of_data mt7986_pwm_data = {
.num_pwms = 2,
.pwm45_fixup = false,
.has_ck_26m_sel = true,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt8183_pwm_data = {
.num_pwms = 4,
.pwm45_fixup = false,
.has_ck_26m_sel = true,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt8365_pwm_data = {
.num_pwms = 3,
.pwm45_fixup = false,
.has_ck_26m_sel = true,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct pwm_mediatek_of_data mt8516_pwm_data = {
.num_pwms = 5,
.pwm45_fixup = false,
.has_ck_26m_sel = true,
.reg_offset = mtk_pwm_reg_offset_v1,
};
static const struct of_device_id pwm_mediatek_of_match[] = {
@ -348,6 +370,7 @@ static const struct of_device_id pwm_mediatek_of_match[] = {
{ .compatible = "mediatek,mt7623-pwm", .data = &mt7623_pwm_data },
{ .compatible = "mediatek,mt7628-pwm", .data = &mt7628_pwm_data },
{ .compatible = "mediatek,mt7629-pwm", .data = &mt7629_pwm_data },
{ .compatible = "mediatek,mt7981-pwm", .data = &mt7981_pwm_data },
{ .compatible = "mediatek,mt7986-pwm", .data = &mt7986_pwm_data },
{ .compatible = "mediatek,mt8183-pwm", .data = &mt8183_pwm_data },
{ .compatible = "mediatek,mt8365-pwm", .data = &mt8365_pwm_data },