[PATCH 5.17 235/772] drm: bridge: icn6211: Fix register layout

Greg Kroah-Hartman
2022-06-07T20:52:54Z

From: Marek Vasut <marex@denx.de>

[ Upstream commit 2dcec57b3734029cc1adc5cb872f61e21609eed4 ]

The chip register layout has nothing to do with MIPI DCS, the registers
incorrectly marked as MIPI DCS in the driver are regular chip registers
often with completely different function.

Fill in the actual register names and bits from [1] and [2] and add the
entire register layout, since the documentation for this chip is hard to
come by.

[1] https://github.com/rockchip-linux/kernel/blob/develop-4.19/drivers/gpu/drm/bridge/icn6211.c
[2] https://github.com/tdjastrzebski/ICN6211-Configurator

Acked-by: Maxime Ripard <maxime@cerno.tech>
Fixes: ce517f18944e3 ("drm: bridge: Add Chipone ICN6211 MIPI-DSI to RGB bridge")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
To: dri-devel@lists.freedesktop.org
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331150509.9838-2-marex@denx.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/bridge/chipone-icn6211.c | 134 ++++++++++++++++++++---
1 file changed, 117 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c
index a6151db95586..eb26615b2993 100644
--- a/drivers/gpu/drm/bridge/chipone-icn6211.c
+++ b/drivers/gpu/drm/bridge/chipone-icn6211.c
@@ -14,8 +14,19 @@
#include <linux/of_device.h>
#include <linux/regulator/consumer.h>

-#include <video/mipi_display.h>
-
+#define VENDOR_ID 0x00
+#define DEVICE_ID_H 0x01
+#define DEVICE_ID_L 0x02
+#define VERSION_ID 0x03
+#define FIRMWARE_VERSION 0x08
+#define CONFIG_FINISH 0x09
+#define PD_CTRL(n) (0x0a + ((n) & 0x3)) /* 0..3 */
+#define RST_CTRL(n) (0x0e + ((n) & 0x1)) /* 0..1 */
+#define SYS_CTRL(n) (0x10 + ((n) & 0x7)) /* 0..4 */
+#define RGB_DRV(n) (0x18 + ((n) & 0x3)) /* 0..3 */
+#define RGB_DLY(n) (0x1c + ((n) & 0x1)) /* 0..1 */
+#define RGB_TEST_CTRL 0x1e
+#define ATE_PLL_EN 0x1f
#define HACTIVE_LI 0x20
#define VACTIVE_LI 0x21
#define VACTIVE_HACTIVE_HI 0x22
@@ -26,6 +37,95 @@
#define VFP 0x27
#define VSYNC 0x28
#define VBP 0x29
+#define BIST_POL 0x2a
+#define BIST_POL_BIST_MODE(n) (((n) & 0xf) << 4)
+#define BIST_POL_BIST_GEN BIT(3)
+#define BIST_POL_HSYNC_POL BIT(2)
+#define BIST_POL_VSYNC_POL BIT(1)
+#define BIST_POL_DE_POL BIT(0)
+#define BIST_RED 0x2b
+#define BIST_GREEN 0x2c
+#define BIST_BLUE 0x2d
+#define BIST_CHESS_X 0x2e
+#define BIST_CHESS_Y 0x2f
+#define BIST_CHESS_XY_H 0x30
+#define BIST_FRAME_TIME_L 0x31
+#define BIST_FRAME_TIME_H 0x32
+#define FIFO_MAX_ADDR_LOW 0x33
+#define SYNC_EVENT_DLY 0x34
+#define HSW_MIN 0x35
+#define HFP_MIN 0x36
+#define LOGIC_RST_NUM 0x37
+#define OSC_CTRL(n) (0x48 + ((n) & 0x7)) /* 0..5 */
+#define BG_CTRL 0x4e
+#define LDO_PLL 0x4f
+#define PLL_CTRL(n) (0x50 + ((n) & 0xf)) /* 0..15 */
+#define PLL_CTRL_6_EXTERNAL 0x90
+#define PLL_CTRL_6_MIPI_CLK 0x92
+#define PLL_CTRL_6_INTERNAL 0x93
+#define PLL_REM(n) (0x60 + ((n) & 0x3)) /* 0..2 */
+#define PLL_DIV(n) (0x63 + ((n) & 0x3)) /* 0..2 */
+#define PLL_FRAC(n) (0x66 + ((n) & 0x3)) /* 0..2 */
+#define PLL_INT(n) (0x69 + ((n) & 0x1)) /* 0..1 */
+#define PLL_REF_DIV 0x6b
+#define PLL_REF_DIV_P(n) ((n) & 0xf)
+#define PLL_REF_DIV_Pe BIT(4)
+#define PLL_REF_DIV_S(n) (((n) & 0x7) << 5)
+#define PLL_SSC_P(n) (0x6c + ((n) & 0x3)) /* 0..2 */
+#define PLL_SSC_STEP(n) (0x6f + ((n) & 0x3)) /* 0..2 */
+#define PLL_SSC_OFFSET(n) (0x72 + ((n) & 0x3)) /* 0..3 */
+#define GPIO_OEN 0x79
+#define MIPI_CFG_PW 0x7a
+#define MIPI_CFG_PW_CONFIG_DSI 0xc1
+#define MIPI_CFG_PW_CONFIG_I2C 0x3e
+#define GPIO_SEL(n) (0x7b + ((n) & 0x1)) /* 0..1 */
+#define IRQ_SEL 0x7d
+#define DBG_SEL 0x7e
+#define DBG_SIGNAL 0x7f
+#define MIPI_ERR_VECTOR_L 0x80
+#define MIPI_ERR_VECTOR_H 0x81
+#define MIPI_ERR_VECTOR_EN_L 0x82
+#define MIPI_ERR_VECTOR_EN_H 0x83
+#define MIPI_MAX_SIZE_L 0x84
+#define MIPI_MAX_SIZE_H 0x85
+#define DSI_CTRL 0x86
+#define DSI_CTRL_UNKNOWN 0x28
+#define DSI_CTRL_DSI_LANES(n) ((n) & 0x3)
+#define MIPI_PN_SWAP 0x87
+#define MIPI_PN_SWAP_CLK BIT(4)
+#define MIPI_PN_SWAP_D(n) BIT((n) & 0x3)
+#define MIPI_SOT_SYNC_BIT_(n) (0x88 + ((n) & 0x1)) /* 0..1 */
+#define MIPI_ULPS_CTRL 0x8a
+#define MIPI_CLK_CHK_VAR 0x8e
+#define MIPI_CLK_CHK_INI 0x8f
+#define MIPI_T_TERM_EN 0x90
+#define MIPI_T_HS_SETTLE 0x91
+#define MIPI_T_TA_SURE_PRE 0x92
+#define MIPI_T_LPX_SET 0x94
+#define MIPI_T_CLK_MISS 0x95
+#define MIPI_INIT_TIME_L 0x96
+#define MIPI_INIT_TIME_H 0x97
+#define MIPI_T_CLK_TERM_EN 0x99
+#define MIPI_T_CLK_SETTLE 0x9a
+#define MIPI_TO_HS_RX_L 0x9e
+#define MIPI_TO_HS_RX_H 0x9f
+#define MIPI_PHY_(n) (0xa0 + ((n) & 0x7)) /* 0..5 */
+#define MIPI_PD_RX 0xb0
+#define MIPI_PD_TERM 0xb1
+#define MIPI_PD_HSRX 0xb2
+#define MIPI_PD_LPTX 0xb3
+#define MIPI_PD_LPRX 0xb4
+#define MIPI_PD_CK_LANE 0xb5
+#define MIPI_FORCE_0 0xb6
+#define MIPI_RST_CTRL 0xb7
+#define MIPI_RST_NUM 0xb8
+#define MIPI_DBG_SET_(n) (0xc0 + ((n) & 0xf)) /* 0..9 */
+#define MIPI_DBG_SEL 0xe0
+#define MIPI_DBG_DATA 0xe1
+#define MIPI_ATE_TEST_SEL 0xe2
+#define MIPI_ATE_STATUS_(n) (0xe3 + ((n) & 0x1)) /* 0..1 */
+#define MIPI_ATE_STATUS_1 0xe4
+#define ICN6211_MAX_REGISTER MIPI_ATE_STATUS(1)

struct chipone {
struct device *dev;
@@ -66,13 +166,13 @@ static void chipone_enable(struct drm_bridge *bridge)
struct chipone *icn = bridge_to_chipone(bridge);
struct drm_display_mode *mode = bridge_to_mode(bridge);

- ICN6211_DSI(icn, 0x7a, 0xc1);
+ ICN6211_DSI(icn, MIPI_CFG_PW, MIPI_CFG_PW_CONFIG_DSI);

ICN6211_DSI(icn, HACTIVE_LI, mode->hdisplay & 0xff);

ICN6211_DSI(icn, VACTIVE_LI, mode->vdisplay & 0xff);

- /**
+ /*
* lsb nibble: 2nd nibble of hdisplay
* msb nibble: 2nd nibble of vdisplay
*/
@@ -95,21 +195,21 @@ static void chipone_enable(struct drm_bridge *bridge)
ICN6211_DSI(icn, VBP, mode->vtotal - mode->vsync_end);

/* dsi specific sequence */
- ICN6211_DSI(icn, MIPI_DCS_SET_TEAR_OFF, 0x80);
- ICN6211_DSI(icn, MIPI_DCS_SET_ADDRESS_MODE, 0x28);
- ICN6211_DSI(icn, 0xb5, 0xa0);
- ICN6211_DSI(icn, 0x5c, 0xff);
- ICN6211_DSI(icn, MIPI_DCS_SET_COLUMN_ADDRESS, 0x01);
- ICN6211_DSI(icn, MIPI_DCS_GET_POWER_SAVE, 0x92);
- ICN6211_DSI(icn, 0x6b, 0x71);
- ICN6211_DSI(icn, 0x69, 0x2b);
- ICN6211_DSI(icn, MIPI_DCS_ENTER_SLEEP_MODE, 0x40);
- ICN6211_DSI(icn, MIPI_DCS_EXIT_SLEEP_MODE, 0x98);
+ ICN6211_DSI(icn, SYNC_EVENT_DLY, 0x80);
+ ICN6211_DSI(icn, HFP_MIN, 0x28);
+ ICN6211_DSI(icn, MIPI_PD_CK_LANE, 0xa0);
+ ICN6211_DSI(icn, PLL_CTRL(12), 0xff);
+ ICN6211_DSI(icn, BIST_POL, BIST_POL_DE_POL);
+ ICN6211_DSI(icn, PLL_CTRL(6), PLL_CTRL_6_MIPI_CLK);
+ ICN6211_DSI(icn, PLL_REF_DIV, 0x71);
+ ICN6211_DSI(icn, PLL_INT(0), 0x2b);
+ ICN6211_DSI(icn, SYS_CTRL(0), 0x40);
+ ICN6211_DSI(icn, SYS_CTRL(1), 0x98);

/* icn6211 specific sequence */
- ICN6211_DSI(icn, 0xb6, 0x20);
- ICN6211_DSI(icn, 0x51, 0x20);
- ICN6211_DSI(icn, 0x09, 0x10);
+ ICN6211_DSI(icn, MIPI_FORCE_0, 0x20);
+ ICN6211_DSI(icn, PLL_CTRL(1), 0x20);
+ ICN6211_DSI(icn, CONFIG_FINISH, 0x10);

usleep_range(10000, 11000);
}
--
2.35.1