From 5cbdf276bd9d9cd3cb9616f8253390096c1a237f Mon Sep 17 00:00:00 2001 From: Sudhakar Rajashekhara Date: Thu, 13 Aug 2009 14:33:14 -0400 Subject: davinci: Add platform support for da850/omap-l138 GLCD This patch adds platform support for the graphic display (Sharp LK043T1DG01) found on DA850/OMAP-L138 based EVM. Signed-off-by: Sudhakar Rajashekhara Signed-off-by: Kevin Hilman --- arch/arm/mach-davinci/board-da850-evm.c | 50 +++++++++++++++++++++++++ arch/arm/mach-davinci/da850.c | 42 +++++++++++++++++++++ arch/arm/mach-davinci/devices-da8xx.c | 59 ++++++++++++++++++++++++++++++ arch/arm/mach-davinci/include/mach/da8xx.h | 3 ++ arch/arm/mach-davinci/include/mach/mux.h | 26 +++++++++++++ 5 files changed, 180 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c index 52bfe4cba25c..b1df784ed702 100644 --- a/arch/arm/mach-davinci/board-da850-evm.c +++ b/arch/arm/mach-davinci/board-da850-evm.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -29,6 +30,9 @@ #define DA850_EVM_PHY_MASK 0x1 #define DA850_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */ +#define DA850_LCD_BL_PIN GPIO_TO_PIN(2, 15) +#define DA850_LCD_PWR_PIN GPIO_TO_PIN(8, 10) + static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = { .bus_freq = 100, /* kHz */ .bus_delay = 0, /* usec */ @@ -59,6 +63,37 @@ static struct snd_platform_data da850_evm_snd_data = { .rxnumevt = 1, }; +static int da850_lcd_hw_init(void) +{ + int status; + + status = gpio_request(DA850_LCD_BL_PIN, "lcd bl\n"); + if (status < 0) + return status; + + status = gpio_request(DA850_LCD_PWR_PIN, "lcd pwr\n"); + if (status < 0) { + gpio_free(DA850_LCD_BL_PIN); + return status; + } + + gpio_direction_output(DA850_LCD_BL_PIN, 0); + gpio_direction_output(DA850_LCD_PWR_PIN, 0); + + /* disable lcd backlight */ + gpio_set_value(DA850_LCD_BL_PIN, 0); + + /* disable lcd power */ + gpio_set_value(DA850_LCD_PWR_PIN, 0); + + /* enable lcd power */ + gpio_set_value(DA850_LCD_PWR_PIN, 1); + + /* enable lcd backlight */ + gpio_set_value(DA850_LCD_BL_PIN, 1); + + return 0; +} static __init void da850_evm_init(void) { @@ -115,6 +150,21 @@ static __init void da850_evm_init(void) ret); da8xx_init_mcasp(0, &da850_evm_snd_data); + + ret = da8xx_pinmux_setup(da850_lcdcntl_pins); + if (ret) + pr_warning("da850_evm_init: lcdcntl mux setup failed: %d\n", + ret); + + ret = da850_lcd_hw_init(); + if (ret) + pr_warning("da850_evm_init: lcd initialization failed: %d\n", + ret); + + ret = da8xx_register_lcdc(); + if (ret) + pr_warning("da850_evm_init: lcdc registration failed: %d\n", + ret); } #ifdef CONFIG_SERIAL_8250_CONSOLE diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c index e440c09c5576..e6e605bf1516 100644 --- a/arch/arm/mach-davinci/da850.c +++ b/arch/arm/mach-davinci/da850.c @@ -297,6 +297,13 @@ static struct clk mcasp_clk = { .psc_ctlr = 1, }; +static struct clk lcdc_clk = { + .name = "lcdc", + .parent = &pll0_sysclk2, + .lpsc = DA8XX_LPSC1_LCDC, + .psc_ctlr = 1, +}; + static struct davinci_clk da850_clks[] = { CLK(NULL, "ref", &ref_clk), CLK(NULL, "pll0", &pll0_clk), @@ -335,6 +342,7 @@ static struct davinci_clk da850_clks[] = { CLK(NULL, "rmii", &rmii_clk), CLK("davinci_emac.1", NULL, &emac_clk), CLK("davinci-mcasp.0", NULL, &mcasp_clk), + CLK("da8xx_lcdc.0", NULL, &lcdc_clk), CLK(NULL, NULL, NULL), }; @@ -405,6 +413,30 @@ static const struct mux_config da850_pins[] = { MUX_CFG(DA850, AXR_2, 2, 20, 15, 1, false) MUX_CFG(DA850, AXR_1, 2, 24, 15, 1, false) MUX_CFG(DA850, AXR_0, 2, 28, 15, 1, false) + /* LCD function */ + MUX_CFG(DA850, LCD_D_7, 16, 8, 15, 2, false) + MUX_CFG(DA850, LCD_D_6, 16, 12, 15, 2, false) + MUX_CFG(DA850, LCD_D_5, 16, 16, 15, 2, false) + MUX_CFG(DA850, LCD_D_4, 16, 20, 15, 2, false) + MUX_CFG(DA850, LCD_D_3, 16, 24, 15, 2, false) + MUX_CFG(DA850, LCD_D_2, 16, 28, 15, 2, false) + MUX_CFG(DA850, LCD_D_1, 17, 0, 15, 2, false) + MUX_CFG(DA850, LCD_D_0, 17, 4, 15, 2, false) + MUX_CFG(DA850, LCD_D_15, 17, 8, 15, 2, false) + MUX_CFG(DA850, LCD_D_14, 17, 12, 15, 2, false) + MUX_CFG(DA850, LCD_D_13, 17, 16, 15, 2, false) + MUX_CFG(DA850, LCD_D_12, 17, 20, 15, 2, false) + MUX_CFG(DA850, LCD_D_11, 17, 24, 15, 2, false) + MUX_CFG(DA850, LCD_D_10, 17, 28, 15, 2, false) + MUX_CFG(DA850, LCD_D_9, 18, 0, 15, 2, false) + MUX_CFG(DA850, LCD_D_8, 18, 4, 15, 2, false) + MUX_CFG(DA850, LCD_PCLK, 18, 24, 15, 2, false) + MUX_CFG(DA850, LCD_HSYNC, 19, 0, 15, 2, false) + MUX_CFG(DA850, LCD_VSYNC, 19, 4, 15, 2, false) + MUX_CFG(DA850, NLCD_AC_ENB_CS, 19, 24, 15, 2, false) + /* GPIO function */ + MUX_CFG(DA850, GPIO2_15, 5, 0, 15, 8, false) + MUX_CFG(DA850, GPIO8_10, 18, 28, 15, 8, false) #endif }; @@ -449,6 +481,16 @@ const short da850_mcasp_pins[] __initdata = { -1 }; +const short da850_lcdcntl_pins[] __initdata = { + DA850_LCD_D_1, DA850_LCD_D_2, DA850_LCD_D_3, DA850_LCD_D_4, + DA850_LCD_D_5, DA850_LCD_D_6, DA850_LCD_D_7, DA850_LCD_D_8, + DA850_LCD_D_9, DA850_LCD_D_10, DA850_LCD_D_11, DA850_LCD_D_12, + DA850_LCD_D_13, DA850_LCD_D_14, DA850_LCD_D_15, DA850_LCD_PCLK, + DA850_LCD_HSYNC, DA850_LCD_VSYNC, DA850_NLCD_AC_ENB_CS, DA850_GPIO2_15, + DA850_GPIO8_10, + -1 +}; + /* FIQ are pri 0-1; otherwise 2-7, with 7 lowest priority */ static u8 da850_default_priorities[DA850_N_CP_INTC_IRQ] = { [IRQ_DA8XX_COMMTX] = 7, diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c index 1882eef3aead..094eb8ed8e76 100644 --- a/arch/arm/mach-davinci/devices-da8xx.c +++ b/arch/arm/mach-davinci/devices-da8xx.c @@ -21,6 +21,7 @@ #include #include #include +#include