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Subject[PATCH v1 3/6] drm/komeda: Implement D71 scaler support
Date
1. Add scaler component and initialize it according to D71 HW.
2. Implement d71_scaler_update/disable/dump

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
---
.../arm/display/komeda/d71/d71_component.c | 131 +++++++++++++++++-
1 file changed, 130 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
index 33ca1718b5cd..5a4c8fd122da 100644
--- a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
@@ -551,6 +551,132 @@ static int d71_compiz_init(struct d71_dev *d71,
return 0;
}

+static void d71_scaler_update_filter_lut(u32 __iomem *reg, u32 hsize_in,
+ u32 vsize_in, u32 hsize_out,
+ u32 vsize_out)
+{
+ u32 val = 0;
+
+ if (hsize_in <= hsize_out)
+ val |= 0x62;
+ else if (hsize_in <= (hsize_out + hsize_out / 2))
+ val |= 0x63;
+ else if (hsize_in <= hsize_out * 2)
+ val |= 0x64;
+ else if (hsize_in <= hsize_out * 2 + (hsize_out * 3) / 4)
+ val |= 0x65;
+ else
+ val |= 0x66;
+
+ if (vsize_in <= vsize_out)
+ val |= SC_VTSEL(0x6A);
+ else if (vsize_in <= (vsize_out + vsize_out / 2))
+ val |= SC_VTSEL(0x6B);
+ else if (vsize_in <= vsize_out * 2)
+ val |= SC_VTSEL(0x6C);
+ else if (vsize_in <= vsize_out * 2 + vsize_out * 3 / 4)
+ val |= SC_VTSEL(0x6D);
+ else
+ val |= SC_VTSEL(0x6E);
+
+ malidp_write32(reg, SC_COEFFTAB, val);
+}
+
+static void d71_scaler_update(struct komeda_component *c,
+ struct komeda_component_state *state)
+{
+ struct komeda_scaler_state *st = to_scaler_st(state);
+ u32 __iomem *reg = c->reg;
+ u32 init_ph, delta_ph, ctrl;
+
+ d71_scaler_update_filter_lut(reg, st->hsize_in, st->vsize_in,
+ st->hsize_out, st->vsize_out);
+
+ malidp_write32(reg, BLK_IN_SIZE, HV_SIZE(st->hsize_in, st->vsize_in));
+ malidp_write32(reg, SC_OUT_SIZE, HV_SIZE(st->hsize_out, st->vsize_out));
+
+ init_ph = (st->hsize_in << 15) / st->hsize_out;
+ malidp_write32(reg, SC_H_INIT_PH, init_ph);
+
+ delta_ph = (st->hsize_in << 16) / st->hsize_out;
+ malidp_write32(reg, SC_H_DELTA_PH, delta_ph);
+
+ init_ph = (st->vsize_in << 15) / st->vsize_out;
+ malidp_write32(reg, SC_V_INIT_PH, init_ph);
+
+ delta_ph = (st->vsize_in << 16) / st->vsize_out;
+ malidp_write32(reg, SC_V_DELTA_PH, delta_ph);
+
+ ctrl = 0;
+ ctrl |= st->en_scaling ? SC_CTRL_SCL : 0;
+ ctrl |= st->en_alpha ? SC_CTRL_AP : 0;
+
+ malidp_write32(reg, BLK_CONTROL, ctrl);
+ malidp_write32(reg, BLK_INPUT_ID0, to_d71_input_id(&state->inputs[0]));
+}
+
+static void d71_scaler_dump(struct komeda_component *c, struct seq_file *sf)
+{
+ u32 v[9];
+
+ dump_block_header(sf, c->reg);
+
+ get_values_from_reg(c->reg, 0x80, 1, v);
+ seq_printf(sf, "SC_INPUT_ID0:\t\t0x%X\n", v[0]);
+
+ get_values_from_reg(c->reg, 0xD0, 1, v);
+ seq_printf(sf, "SC_CONTROL:\t\t0x%X\n", v[0]);
+
+ get_values_from_reg(c->reg, 0xDC, 9, v);
+ seq_printf(sf, "SC_COEFFTAB:\t\t0x%X\n", v[0]);
+ seq_printf(sf, "SC_IN_SIZE:\t\t0x%X\n", v[1]);
+ seq_printf(sf, "SC_OUT_SIZE:\t\t0x%X\n", v[2]);
+ seq_printf(sf, "SC_H_CROP:\t\t0x%X\n", v[3]);
+ seq_printf(sf, "SC_V_CROP:\t\t0x%X\n", v[4]);
+ seq_printf(sf, "SC_H_INIT_PH:\t\t0x%X\n", v[5]);
+ seq_printf(sf, "SC_H_DELTA_PH:\t\t0x%X\n", v[6]);
+ seq_printf(sf, "SC_V_INIT_PH:\t\t0x%X\n", v[7]);
+ seq_printf(sf, "SC_V_DELTA_PH:\t\t0x%X\n", v[8]);
+}
+
+static struct komeda_component_funcs d71_scaler_funcs = {
+ .update = d71_scaler_update,
+ .disable = d71_component_disable,
+ .dump_register = d71_scaler_dump,
+};
+
+static int d71_scaler_init(struct d71_dev *d71,
+ struct block_header *blk, u32 __iomem *reg)
+{
+ struct komeda_component *c;
+ struct komeda_scaler *scaler;
+ u32 pipe_id, comp_id;
+
+ get_resources_id(blk->block_info, &pipe_id, &comp_id);
+
+ c = komeda_component_add(&d71->pipes[pipe_id]->base, sizeof(*scaler),
+ comp_id, BLOCK_INFO_INPUT_ID(blk->block_info),
+ &d71_scaler_funcs,
+ 1, get_valid_inputs(blk), 1, reg,
+ "CU%d_SCALER%d",
+ pipe_id, BLOCK_INFO_BLK_ID(blk->block_info));
+
+ if (!c) {
+ DRM_ERROR("Failed to initialize scaler");
+ return -1;
+ }
+
+ scaler = to_scaler(c);
+ set_range(&scaler->hsize, 4, d71->max_line_size);
+ set_range(&scaler->vsize, 4, 4096);
+ scaler->max_downscaling = 6;
+ scaler->max_upscaling = 64;
+
+ malidp_write32(c->reg, BLK_CONTROL, 0);
+
+ return 0;
+}
+
static void d71_improc_update(struct komeda_component *c,
struct komeda_component_state *state)
{
@@ -770,8 +896,11 @@ int d71_probe_block(struct d71_dev *d71,
err = d71_compiz_init(d71, blk, reg);
break;

- case D71_BLK_TYPE_CU_SPLITTER:
case D71_BLK_TYPE_CU_SCALER:
+ err = d71_scaler_init(d71, blk, reg);
+ break;
+
+ case D71_BLK_TYPE_CU_SPLITTER:
case D71_BLK_TYPE_CU_MERGER:
break;

--
2.17.1
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