[U-Boot] [PATCH] video: exynos: Change mipi dsi write function parameters correctly
Donghwa Lee
dh09.lee at samsung.com
Wed May 8 06:14:57 CEST 2013
This patch have changed mipi dsi write functions' parameters correctly.
- exynos_mipi_dsi_wr_data()'s 3rd parameter is changed to
'const unsigned char' type.
- exynos_mipi_dsi_wr_tx_header()'s 3rd and 4th parameters were
changed to
'const unsigned char' type.
- s6e8ax0 panel driver does not use type cast operations to write
mipi dsi
commands anymore.
- mipi dsi payload is composed with array of panel commands to improve
readability.
Signed-off-by: Donghwa Lee <dh09.lee at samsung.com>
---
arch/arm/include/asm/arch-exynos/mipi_dsim.h | 2 +-
drivers/video/exynos_mipi_dsi_common.c | 60
++++++++++++--------------
drivers/video/exynos_mipi_dsi_common.h | 2 +-
drivers/video/exynos_mipi_dsi_lowlevel.c | 2 +-
drivers/video/exynos_mipi_dsi_lowlevel.h | 2 +-
drivers/video/s6e8ax0.c | 59
++++++++++++++-----------
6 files changed, 65 insertions(+), 62 deletions(-)
diff --git a/arch/arm/include/asm/arch-exynos/mipi_dsim.h
b/arch/arm/include/asm/arch-exynos/mipi_dsim.h
index b73263d..afe7c08 100644
--- a/arch/arm/include/asm/arch-exynos/mipi_dsim.h
+++ b/arch/arm/include/asm/arch-exynos/mipi_dsim.h
@@ -304,7 +304,7 @@ struct exynos_platform_mipi_dsim {
*/
struct mipi_dsim_master_ops {
int (*cmd_write)(struct mipi_dsim_device *dsim, unsigned int data_id,
- unsigned int data0, unsigned int data1);
+ const unsigned char *data0, unsigned int data1);
int (*cmd_read)(struct mipi_dsim_device *dsim, unsigned int data_id,
unsigned int data0, unsigned int data1);
int (*get_dsim_frame_done)(struct mipi_dsim_device *dsim);
diff --git a/drivers/video/exynos_mipi_dsi_common.c
b/drivers/video/exynos_mipi_dsi_common.c
index 6eeb464..ceb6084 100644
--- a/drivers/video/exynos_mipi_dsi_common.c
+++ b/drivers/video/exynos_mipi_dsi_common.c
@@ -63,7 +63,7 @@ static unsigned int dpll_table[15] = {
};
static void exynos_mipi_dsi_long_data_wr(struct mipi_dsim_device *dsim,
- unsigned int data0, unsigned int data1)
+ const unsigned char *data0, unsigned int data1)
{
unsigned int data_cnt = 0, payload = 0;
@@ -75,42 +75,40 @@ static void exynos_mipi_dsi_long_data_wr(struct
mipi_dsim_device *dsim,
*/
if ((data1 - data_cnt) < 4) {
if ((data1 - data_cnt) == 3) {
- payload = *(u8 *)(data0 + data_cnt) |
- (*(u8 *)(data0 + (data_cnt + 1))) << 8 |
- (*(u8 *)(data0 + (data_cnt + 2))) << 16;
+ payload = data0[data_cnt] |
+ data0[data_cnt + 1] << 8 |
+ data0[data_cnt + 2] << 16;
debug("count = 3 payload = %x, %x %x %x\n",
- payload, *(u8 *)(data0 + data_cnt),
- *(u8 *)(data0 + (data_cnt + 1)),
- *(u8 *)(data0 + (data_cnt + 2)));
+ payload, data0[data_cnt],
+ data0[data_cnt + 1],
+ data0[data_cnt + 2]);
} else if ((data1 - data_cnt) == 2) {
- payload = *(u8 *)(data0 + data_cnt) |
- (*(u8 *)(data0 + (data_cnt + 1))) << 8;
+ payload = data0[data_cnt] |
+ data0[data_cnt + 1] << 8;
debug("count = 2 payload = %x, %x %x\n", payload,
- *(u8 *)(data0 + data_cnt),
- *(u8 *)(data0 + (data_cnt + 1)));
+ data0[data_cnt], data0[data_cnt + 1]);
} else if ((data1 - data_cnt) == 1) {
- payload = *(u8 *)(data0 + data_cnt);
+ payload = data0[data_cnt];
}
} else {
/* send 4bytes per one time. */
- payload = *(u8 *)(data0 + data_cnt) |
- (*(u8 *)(data0 + (data_cnt + 1))) << 8 |
- (*(u8 *)(data0 + (data_cnt + 2))) << 16 |
- (*(u8 *)(data0 + (data_cnt + 3))) << 24;
+ payload = data0[data_cnt] |
+ data0[data_cnt + 1] << 8 |
+ data0[data_cnt + 2] << 16 |
+ data0[data_cnt + 3] << 24;
debug("count = 4 payload = %x, %x %x %x %x\n",
payload, *(u8 *)(data0 + data_cnt),
- *(u8 *)(data0 + (data_cnt + 1)),
- *(u8 *)(data0 + (data_cnt + 2)),
- *(u8 *)(data0 + (data_cnt + 3)));
-
+ data0[data_cnt + 1],
+ data0[data_cnt + 2],
+ data0[data_cnt + 3]);
}
exynos_mipi_dsi_wr_tx_data(dsim, payload);
}
}
int exynos_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned
int data_id,
- unsigned int data0, unsigned int data1)
+ const unsigned char *data0, unsigned int data1)
{
unsigned int timeout = TRY_GET_FIFO_TIMEOUT;
unsigned long delay_val, delay;
@@ -149,8 +147,8 @@ int exynos_mipi_dsi_wr_data(struct mipi_dsim_device
*dsim, unsigned int data_id,
case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE:
debug("data0 = %x data1 = %x\n",
- data0, data1);
- exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0, data1);
+ data0[0], data0[1]);
+ exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0[0], data0[1]);
if (check_rx_ack) {
/* process response func should be implemented */
return 0;
@@ -163,7 +161,7 @@ int exynos_mipi_dsi_wr_data(struct mipi_dsim_device
*dsim, unsigned int data_id,
case MIPI_DSI_COLOR_MODE_ON:
case MIPI_DSI_SHUTDOWN_PERIPHERAL:
case MIPI_DSI_TURN_ON_PERIPHERAL:
- exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0, data1);
+ exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0[0], data0[1]);
if (check_rx_ack) {
/* process response func should be implemented. */
return 0;
@@ -185,7 +183,7 @@ int exynos_mipi_dsi_wr_data(struct mipi_dsim_device
*dsim, unsigned int data_id,
case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM:
case MIPI_DSI_DCS_READ:
exynos_mipi_dsi_clear_all_interrupt(dsim);
- exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0, data1);
+ exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0[0], data0[1]);
/* process response func should be implemented. */
return 0;
@@ -200,17 +198,15 @@ int exynos_mipi_dsi_wr_data(struct
mipi_dsim_device *dsim, unsigned int data_id,
/* if data count is less then 4, then send 3bytes data. */
if (data1 < 4) {
- payload = *(u8 *)(data0) |
- *(u8 *)(data0 + 1) << 8 |
- *(u8 *)(data0 + 2) << 16;
+ payload = data0[0] |
+ data0[1] << 8 |
+ data0[2] << 16;
exynos_mipi_dsi_wr_tx_data(dsim, payload);
debug("count = %d payload = %x,%x %x %x\n",
- data1, payload,
- *(u8 *)(data0 + data_cnt),
- *(u8 *)(data0 + (data_cnt + 1)),
- *(u8 *)(data0 + (data_cnt + 2)));
+ data1, payload, data0[0],
+ data0[1], data0[2]);
} else {
/* in case that data count is more then 4 */
exynos_mipi_dsi_long_data_wr(dsim, data0, data1);
diff --git a/drivers/video/exynos_mipi_dsi_common.h
b/drivers/video/exynos_mipi_dsi_common.h
index 4d80679..af0a695 100644
--- a/drivers/video/exynos_mipi_dsi_common.h
+++ b/drivers/video/exynos_mipi_dsi_common.h
@@ -26,7 +26,7 @@
#define _EXYNOS_MIPI_DSI_COMMON_H
int exynos_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned
int data_id,
- unsigned int data0, unsigned int data1);
+ const unsigned char *data0, unsigned int data1);
int exynos_mipi_dsi_pll_on(struct mipi_dsim_device *dsim, unsigned int
enable);
unsigned long exynos_mipi_dsi_change_pll(struct mipi_dsim_device *dsim,
unsigned int pre_divider, unsigned int main_divider,
diff --git a/drivers/video/exynos_mipi_dsi_lowlevel.c
b/drivers/video/exynos_mipi_dsi_lowlevel.c
index d61b773..00248f0 100644
--- a/drivers/video/exynos_mipi_dsi_lowlevel.c
+++ b/drivers/video/exynos_mipi_dsi_lowlevel.c
@@ -613,7 +613,7 @@ unsigned int exynos_mipi_dsi_get_fifo_state(struct
mipi_dsim_device *dsim)
}
void exynos_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim,
- unsigned int di, unsigned int data0, unsigned int data1)
+ unsigned int di, const unsigned char data0, const unsigned char data1)
{
struct exynos_mipi_dsim *mipi_dsim =
(struct exynos_mipi_dsim *)samsung_get_base_mipi_dsim();
diff --git a/drivers/video/exynos_mipi_dsi_lowlevel.h
b/drivers/video/exynos_mipi_dsi_lowlevel.h
index 4b8c441..1d62cc2 100644
--- a/drivers/video/exynos_mipi_dsi_lowlevel.h
+++ b/drivers/video/exynos_mipi_dsi_lowlevel.h
@@ -104,7 +104,7 @@ unsigned int
_exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device
*dsim);
void _exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim);
void exynos_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim,
- unsigned int di, unsigned int data0, unsigned int data1);
+ unsigned int di, const unsigned char data0, const unsigned char
data1);
void exynos_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim,
unsigned int tx_data);
diff --git a/drivers/video/s6e8ax0.c b/drivers/video/s6e8ax0.c
index 176c518..4de4170 100644
--- a/drivers/video/s6e8ax0.c
+++ b/drivers/video/s6e8ax0.c
@@ -47,11 +47,11 @@ static void s6e8ax0_panel_cond(struct
mipi_dsim_device *dsim_dev)
if (reverse) {
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send_reverse,
+ data_to_send_reverse,
ARRAY_SIZE(data_to_send_reverse));
} else {
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send, ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
}
@@ -63,8 +63,7 @@ static void s6e8ax0_display_cond(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send,
- ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_gamma_cond(struct mipi_dsim_device *dsim_dev)
@@ -78,15 +77,18 @@ static void s6e8ax0_gamma_cond(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send,
- ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_gamma_update(struct mipi_dsim_device *dsim_dev)
{
struct mipi_dsim_master_ops *ops = dsim_dev->master_ops;
+ static const unsigned char data_to_send[] = {
+ 0xf7, 0x03
+ };
- ops->cmd_write(dsim_dev, MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xf7, 0x3);
+ ops->cmd_write(dsim_dev, MIPI_DSI_DCS_SHORT_WRITE_PARAM, data_to_send,
+ ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_etc_source_control(struct mipi_dsim_device *dsim_dev)
@@ -97,8 +99,7 @@ static void s6e8ax0_etc_source_control(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send,
- ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_etc_pentile_control(struct mipi_dsim_device *dsim_dev)
@@ -110,8 +111,7 @@ static void s6e8ax0_etc_pentile_control(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send,
- ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_etc_mipi_control1(struct mipi_dsim_device *dsim_dev)
@@ -122,8 +122,7 @@ static void s6e8ax0_etc_mipi_control1(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send,
- ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_etc_mipi_control2(struct mipi_dsim_device *dsim_dev)
@@ -134,8 +133,7 @@ static void s6e8ax0_etc_mipi_control2(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send,
- ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_etc_power_control(struct mipi_dsim_device *dsim_dev)
@@ -146,14 +144,18 @@ static void s6e8ax0_etc_power_control(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send, ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_etc_mipi_control3(struct mipi_dsim_device *dsim_dev)
{
struct mipi_dsim_master_ops *ops = dsim_dev->master_ops;
+ static const unsigned char data_to_send[] = {
+ 0xe3, 0x40
+ };
- ops->cmd_write(dsim_dev, MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xe3, 0x40);
+ ops->cmd_write(dsim_dev, MIPI_DSI_DCS_SHORT_WRITE_PARAM, data_to_send,
+ ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_etc_mipi_control4(struct mipi_dsim_device *dsim_dev)
@@ -164,7 +166,7 @@ static void s6e8ax0_etc_mipi_control4(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send, ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_elvss_set(struct mipi_dsim_device *dsim_dev)
@@ -175,24 +177,29 @@ static void s6e8ax0_elvss_set(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send,
- ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_display_on(struct mipi_dsim_device *dsim_dev)
{
struct mipi_dsim_master_ops *ops = dsim_dev->master_ops;
+ static const unsigned char data_to_send[] = {
+ 0x29, 0x00
+ };
- ops->cmd_write(dsim_dev,
- MIPI_DSI_DCS_SHORT_WRITE, 0x29, 0x00);
+ ops->cmd_write(dsim_dev, MIPI_DSI_DCS_SHORT_WRITE, data_to_send,
+ ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_sleep_out(struct mipi_dsim_device *dsim_dev)
{
struct mipi_dsim_master_ops *ops = dsim_dev->master_ops;
+ static const unsigned char data_to_send[] = {
+ 0x11, 0x00
+ };
- ops->cmd_write(dsim_dev,
- MIPI_DSI_DCS_SHORT_WRITE, 0x11, 0x00);
+ ops->cmd_write(dsim_dev, MIPI_DSI_DCS_SHORT_WRITE, data_to_send,
+ ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_apply_level1_key(struct mipi_dsim_device *dsim_dev)
@@ -203,7 +210,7 @@ static void s6e8ax0_apply_level1_key(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send, ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_apply_mtp_key(struct mipi_dsim_device *dsim_dev)
@@ -214,7 +221,7 @@ static void s6e8ax0_apply_mtp_key(struct
mipi_dsim_device *dsim_dev)
};
ops->cmd_write(dsim_dev, MIPI_DSI_DCS_LONG_WRITE,
- (unsigned int)data_to_send, ARRAY_SIZE(data_to_send));
+ data_to_send, ARRAY_SIZE(data_to_send));
}
static void s6e8ax0_panel_init(struct mipi_dsim_device *dsim_dev)
--
1.7.9.5
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