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Subject[PATCH v6 02/22] drm/sun4i: sun6i_mipi_dsi: Support instruction loop selection
Date
Instruction loop selection would require before writing
loop number registers, so enable idle, LP11 bits on
loop selection register.

Reference code available in BSP (from linux-sunxi/
drivers/video/sunxi/disp2/disp/de/lowlevel_sun50iw1/de_dsi.c)

(dsi_dev[sel]->dsi_inst_loop_sel.dwval = 2<<(4*DSI_INST_ID_LP11) |
3<<(4*DSI_INST_ID_DLY);

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index a5fcee750bee..813d5523f1c7 100644
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -403,6 +403,9 @@ static void sun6i_dsi_setup_inst_loop(struct sun6i_dsi *dsi,
{
u16 delay = sun6i_dsi_setup_inst_delay(dsi, mode);

+ regmap_write(dsi->regs, SUN6I_DSI_INST_LOOP_SEL_REG,
+ DSI_INST_ID_HSC << (4 * DSI_INST_ID_LP11) |
+ DSI_INST_ID_HSD << (4 * DSI_INST_ID_DLY));
regmap_write(dsi->regs, SUN6I_DSI_INST_LOOP_NUM_REG(0),
SUN6I_DSI_INST_LOOP_NUM_N0(50 - 1) |
SUN6I_DSI_INST_LOOP_NUM_N1(delay));
--
2.18.0.321.gffc6fa0e3
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