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@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)