[PATCH V7 04/13] soc: mediatek: add support for mt6873

Henry Chen
2021-01-08T07:59:56Z

add support for mt6873

Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
---
drivers/soc/mediatek/mtk-dvfsrc.c | 114 ++++++++++++++++++++++++++++++++++++++
1 file changed, 114 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-dvfsrc.c b/drivers/soc/mediatek/mtk-dvfsrc.c
index c0c6d91..a422680 100644
--- a/drivers/soc/mediatek/mtk-dvfsrc.c
+++ b/drivers/soc/mediatek/mtk-dvfsrc.c
@@ -102,6 +102,16 @@ enum dvfsrc_regs {
[DVFSRC_SW_BW] = 0x160,
};

+static const int mt6873_regs[] = {
+ [DVFSRC_SW_REQ] = 0xC,
+ [DVFSRC_LEVEL] = 0xD44,
+ [DVFSRC_SW_PEAK_BW] = 0x278,
+ [DVFSRC_SW_BW] = 0x26C,
+ [DVFSRC_SW_HRT_BW] = 0x290,
+ [DVFSRC_TARGET_LEVEL] = 0xD48,
+ [DVFSRC_VCORE_REQUEST] = 0x6C,
+};
+
static const struct dvfsrc_opp *get_current_opp(struct mtk_dvfsrc *dvfsrc)
{
int level;
@@ -127,6 +137,78 @@ static int dvfsrc_wait_for_vcore_level(struct mtk_dvfsrc *dvfsrc, u32 level)
POLL_TIMEOUT);
}

+static int mt6873_get_target_level(struct mtk_dvfsrc *dvfsrc)
+{
+ return dvfsrc_read(dvfsrc, DVFSRC_TARGET_LEVEL);
+}
+
+static int mt6873_get_current_level(struct mtk_dvfsrc *dvfsrc)
+{
+ u32 curr_level;
+
+ /* HW level 0 is begin from 0x1, and max opp is 0x1*/
+ curr_level = ffs(dvfsrc_read(dvfsrc, DVFSRC_LEVEL));
+ if (curr_level > dvfsrc->curr_opps->num_opp)
+ curr_level = 0;
+ else
+ curr_level = dvfsrc->curr_opps->num_opp - curr_level;
+
+ return curr_level;
+}
+
+static int mt6873_wait_for_opp_level(struct mtk_dvfsrc *dvfsrc, u32 level)
+{
+ const struct dvfsrc_opp *target, *curr;
+
+ target = &dvfsrc->curr_opps->opps[level];
+ return readx_poll_timeout_atomic(get_current_opp, dvfsrc, curr,
+ curr->dram_opp >= target->dram_opp,
+ STARTUP_TIME, POLL_TIMEOUT);
+}
+
+static u32 mt6873_get_vcore_level(struct mtk_dvfsrc *dvfsrc)
+{
+ return (dvfsrc_read(dvfsrc, DVFSRC_SW_REQ) >> 4) & 0x7;
+}
+
+static u32 mt6873_get_vcp_level(struct mtk_dvfsrc *dvfsrc)
+{
+ return (dvfsrc_read(dvfsrc, DVFSRC_VCORE_REQUEST) >> 12) & 0x7;
+}
+
+static void mt6873_set_dram_bw(struct mtk_dvfsrc *dvfsrc, u64 bw)
+{
+ bw = div_u64(kbps_to_mbps(bw), 100);
+ bw = min_t(u64, bw, 0xFF);
+ dvfsrc_write(dvfsrc, DVFSRC_SW_BW, bw);
+}
+
+static void mt6873_set_dram_peak_bw(struct mtk_dvfsrc *dvfsrc, u64 bw)
+{
+ bw = div_u64(kbps_to_mbps(bw), 100);
+ bw = min_t(u64, bw, 0xFF);
+ dvfsrc_write(dvfsrc, DVFSRC_SW_PEAK_BW, bw);
+}
+
+static void mt6873_set_dram_hrtbw(struct mtk_dvfsrc *dvfsrc, u64 bw)
+{
+ bw = div_u64((kbps_to_mbps(bw) + 29), 30);
+ bw = min_t(u64, bw, 0x3FF);
+ dvfsrc_write(dvfsrc, DVFSRC_SW_HRT_BW, bw);
+}
+
+static void mt6873_set_vcore_level(struct mtk_dvfsrc *dvfsrc, u32 level)
+{
+ spin_lock(&dvfsrc->req_lock);
+ dvfsrc_rmw(dvfsrc, DVFSRC_SW_REQ, level, 0x7, 4);
+ spin_unlock(&dvfsrc->req_lock);
+}
+
+static void mt6873_set_vscp_level(struct mtk_dvfsrc *dvfsrc, u32 level)
+{
+ dvfsrc_rmw(dvfsrc, DVFSRC_VCORE_REQUEST, level, 0x7, 12);
+}
+
static int mt8183_wait_for_opp_level(struct mtk_dvfsrc *dvfsrc, u32 level)
{
const struct dvfsrc_opp *target, *curr;
@@ -377,6 +459,35 @@ static int mtk_dvfsrc_probe(struct platform_device *pdev)
.wait_for_vcore_level = dvfsrc_wait_for_vcore_level,
};

+static const struct dvfsrc_opp dvfsrc_opp_mt6873_lp4[] = {
+ {0, 0}, {1, 0}, {2, 0}, {3, 0},
+ {0, 1}, {1, 1}, {2, 1}, {3, 1},
+ {0, 2}, {1, 2}, {2, 2}, {3, 2},
+ {1, 3}, {2, 3}, {3, 3}, {1, 4},
+ {2, 4}, {3, 4}, {2, 5}, {3, 5},
+ {3, 6},
+};
+
+static const struct dvfsrc_opp_desc dvfsrc_opp_mt6873_desc[] = {
+ DVFSRC_OPP_DESC(dvfsrc_opp_mt6873_lp4),
+};
+
+static const struct dvfsrc_soc_data mt6873_data = {
+ .opps_desc = dvfsrc_opp_mt6873_desc,
+ .regs = mt6873_regs,
+ .get_target_level = mt6873_get_target_level,
+ .get_current_level = mt6873_get_current_level,
+ .get_vcore_level = mt6873_get_vcore_level,
+ .get_vcp_level = mt6873_get_vcp_level,
+ .set_dram_bw = mt6873_set_dram_bw,
+ .set_dram_peak_bw = mt6873_set_dram_peak_bw,
+ .set_dram_hrtbw = mt6873_set_dram_hrtbw,
+ .set_vcore_level = mt6873_set_vcore_level,
+ .set_vscp_level = mt6873_set_vscp_level,
+ .wait_for_opp_level = mt6873_wait_for_opp_level,
+ .wait_for_vcore_level = dvfsrc_wait_for_vcore_level,
+};
+
static int mtk_dvfsrc_remove(struct platform_device *pdev)
{
struct mtk_dvfsrc *dvfsrc = platform_get_drvdata(pdev);
@@ -392,6 +503,9 @@ static int mtk_dvfsrc_remove(struct platform_device *pdev)
.compatible = "mediatek,mt8183-dvfsrc",
.data = &mt8183_data,
}, {
+ .compatible = "mediatek,mt6873-dvfsrc",
+ .data = &mt6873_data,
+ }, {
/* sentinel */
},
};