diff options
author | Amaury Pouly <amaury.pouly@gmail.com> | 2013-11-26 15:55:14 +0000 |
---|---|---|
committer | Amaury Pouly <amaury.pouly@gmail.com> | 2013-11-26 15:57:13 +0000 |
commit | cbed7ecafed52f41a06fdd1315e06f5601063606 (patch) | |
tree | 5ea15b05c46dd59b9f6788e3cd93413fc2683065 | |
parent | f04d3c518a3c26def9a003a108bec254499c7c90 (diff) | |
download | rockbox-cbed7ec.tar.gz rockbox-cbed7ec.zip |
zen: rework lcd enable
The ZEN/ZEN-XFi seem to be very picky about the lcd. And they do not like
standby mode so I'm going to drop it, the OF doesn't use it anyway. I still
don't know what this "power" pin is about, obviously it's not real power but
the OF toggle it. Let's hope the lcd will finally become more stable with
fix: the driver now does full power on/off on enable/disable.
Change-Id: I1c465ee4f2462bc3d9507e5f575f0a181af60214
-rw-r--r-- | firmware/target/arm/imx233/creative-zen/lcd-zen.c | 140 |
1 files changed, 67 insertions, 73 deletions
diff --git a/firmware/target/arm/imx233/creative-zen/lcd-zen.c b/firmware/target/arm/imx233/creative-zen/lcd-zen.c index d1d690a974..7e9e98271c 100644 --- a/firmware/target/arm/imx233/creative-zen/lcd-zen.c +++ b/firmware/target/arm/imx233/creative-zen/lcd-zen.c @@ -36,9 +36,7 @@ #include "action.h" #endif -#ifdef HAVE_LCD_ENABLE static bool lcd_on; -#endif /** * DMA @@ -71,7 +69,7 @@ static void wait_frames_cb(void) static void wait_nr_frames(int nr) { - g_wait_nr_frame = 1 + nr; // +1 because we want entire frames + g_wait_nr_frame = 2 + nr; // +1 because we want entire frames, +1 to be safe imx233_lcdif_set_vsync_edge_cb(wait_frames_cb); imx233_lcdif_enable_vsync_edge_irq(true); semaphore_wait(&g_wait_sema, TIMEOUT_BLOCK); @@ -90,20 +88,15 @@ static void wait_nr_frames(int nr) #define RS 0x2 #define RW 0x1 -static void spi_init(void) +static void spi_enable(bool en) { - imx233_pinctrl_acquire(1, 9, "lcd_spi_sdo"); - imx233_pinctrl_acquire(1, 10, "lcd_spi_scl"); - imx233_pinctrl_acquire(1, 11, "lcd_spi_cs"); - imx233_pinctrl_set_function(1, 9, PINCTRL_FUNCTION_GPIO); - imx233_pinctrl_set_function(1, 10, PINCTRL_FUNCTION_GPIO); - imx233_pinctrl_set_function(1, 11, PINCTRL_FUNCTION_GPIO); - imx233_pinctrl_set_gpio(1, 9, true); - imx233_pinctrl_set_gpio(1, 10, true); - imx233_pinctrl_set_gpio(1, 11, true); - imx233_pinctrl_enable_gpio(1, 9, true); - imx233_pinctrl_enable_gpio(1, 10, true); - imx233_pinctrl_enable_gpio(1, 11, true); + imx233_pinctrl_set_gpio(1, 9, en); + imx233_pinctrl_set_gpio(1, 10, en); + imx233_pinctrl_set_gpio(1, 11, en); + imx233_pinctrl_enable_gpio(1, 9, en); + imx233_pinctrl_enable_gpio(1, 10, en); + imx233_pinctrl_enable_gpio(1, 11, en); + mdelay(1); } static void spi_delay(void) @@ -216,7 +209,6 @@ static void lcd_display_on_seq(void) spi_write_reg(0x7, 0x103); } -#ifdef HAVE_LCD_ENABLE static void lcd_display_off_seq(void) { spi_write_reg(0xb, 0x30e1); @@ -227,30 +219,69 @@ static void lcd_display_off_seq(void) spi_write_reg(0x10, 0x100); } -static void lcd_standby_in_seq(void) +/** + * Rockbox + */ + +bool lcd_active(void) { - lcd_display_off_seq(); - spi_write_reg(0x10, 0x1); + return lcd_on; } -static void lcd_standby_out_seq(void) +void lcd_enable(bool enable) { - spi_write_reg(0x10, 0); - lcd_power_seq(); - lcd_display_on_seq(); -} -#endif + if(lcd_on == enable) + return; -/** - * Rockbox - */ + lcd_on = enable; + if(lcd_on) + { + // enable spi + spi_enable(true); + // reset + imx233_lcdif_reset_lcd(true); + imx233_lcdif_reset_lcd(false); + mdelay(1); + imx233_lcdif_reset_lcd(true); + mdelay(1); + // "power" on + lcd_power(true); + // setup registers + imx233_lcdif_enable_sync_signals(true); // we need frame signals during init + lcd_power_seq(); + lcd_init_seq(); + lcd_display_on_seq(); + + imx233_dma_reset_channel(APB_LCDIF); + imx233_dma_start_command(APB_LCDIF, &lcdif_dma[0].dma); + BF_SET(LCDIF_CTRL, DOTCLK_MODE); + BF_SET(LCDIF_CTRL, RUN); + } + else + { + // power down + lcd_display_off_seq(); + lcd_power(false); + // stop lcdif + BF_CLR(LCDIF_CTRL, DOTCLK_MODE); + // disable spi + spi_enable(false); + } +} void lcd_init_device(void) { semaphore_init(&g_wait_sema, 1, 0); -#ifdef HAVE_LCD_ENABLE - lcd_on = true; -#endif + /* I'm not really sure this pin is related to power, it does not seem to do anything */ + imx233_pinctrl_acquire(1, 8, "lcd_power"); + imx233_pinctrl_acquire(1, 9, "lcd_spi_sdo"); + imx233_pinctrl_acquire(1, 10, "lcd_spi_scl"); + imx233_pinctrl_acquire(1, 11, "lcd_spi_cs"); + imx233_pinctrl_set_function(1, 9, PINCTRL_FUNCTION_GPIO); + imx233_pinctrl_set_function(1, 10, PINCTRL_FUNCTION_GPIO); + imx233_pinctrl_set_function(1, 11, PINCTRL_FUNCTION_GPIO); + imx233_pinctrl_set_function(1, 8, PINCTRL_FUNCTION_GPIO); + imx233_pinctrl_enable_gpio(1, 8, true); /** lcd is 320x240, data bus is 8-bit, depth is 24-bit so we need 3clk/pix * by running PIX clock at 24MHz we can sustain ~100 fps */ imx233_clkctrl_enable(CLK_PIX, false); @@ -275,26 +306,7 @@ void lcd_init_device(void) /*h_front_porch*/4, LCD_WIDTH, LCD_HEIGHT, /*clk_per_pix*/3, /*enable_present*/false); imx233_lcdif_set_byte_packing_format(0xf); - // prepare pins - spi_init(); - imx233_pinctrl_acquire(1, 8, "lcd_power"); - imx233_pinctrl_set_function(1, 8, PINCTRL_FUNCTION_GPIO); - imx233_pinctrl_enable_gpio(1, 8, true); - // reset lcd - imx233_lcdif_reset_lcd(true); - mdelay(10); - imx233_lcdif_reset_lcd(false); - mdelay(10); - imx233_lcdif_reset_lcd(true); - mdelay(10); - // power up - lcd_power(true); - // setup registers - imx233_lcdif_enable_sync_signals(true); // we need frame signals during init - lcd_power_seq(); - lcd_init_seq(); - lcd_display_on_seq(); - // setup refresh + // setup dma unsigned size = IMX233_FRAMEBUFFER_SIZE; uint8_t *frame_p = FRAME; for(int i = 0; i < NR_CMDS; i++) @@ -307,29 +319,10 @@ void lcd_init_device(void) size -= xfer; frame_p += xfer; } - imx233_dma_start_command(APB_LCDIF, &lcdif_dma[0].dma); - BF_SET(LCDIF_CTRL, RUN); + // enable + lcd_enable(true); } -#ifdef HAVE_LCD_ENABLE -bool lcd_active(void) -{ - return lcd_on; -} - -void lcd_enable(bool enable) -{ - if(lcd_on == enable) - return; - - lcd_on = enable; - if(lcd_on) - lcd_standby_out_seq(); - else - lcd_standby_in_seq(); -} -#endif - void lcd_update(void) { lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT); @@ -353,3 +346,4 @@ void lcd_update_rect(int x, int y, int w, int h) } } } + |