From patchwork Wed Aug 12 21:46:24 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rajashekhara, Sudhakar" X-Patchwork-Id: 40862 Received: from devils.ext.ti.com (devils.ext.ti.com [198.47.26.153]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n7CCK4IM012302 for ; Wed, 12 Aug 2009 12:20:04 GMT Received: from dlep36.itg.ti.com ([157.170.170.91]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id n7CCHfNc030033; Wed, 12 Aug 2009 07:17:46 -0500 Received: from linux.omap.com (localhost [127.0.0.1]) by dlep36.itg.ti.com (8.13.8/8.13.8) with ESMTP id n7CCHeJ5011146; Wed, 12 Aug 2009 07:17:41 -0500 (CDT) Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id C7C0E80627; Wed, 12 Aug 2009 07:17:40 -0500 (CDT) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dflp53.itg.ti.com (dflp53.itg.ti.com [128.247.5.6]) by linux.omap.com (Postfix) with ESMTP id 49BD680626 for ; Wed, 12 Aug 2009 07:17:38 -0500 (CDT) Received: from tidmzi-ftp.india.ext.ti.com (localhost [127.0.0.1]) by dflp53.itg.ti.com (8.13.8/8.13.8) with SMTP id n7CCHajk025671 for ; Wed, 12 Aug 2009 07:17:36 -0500 (CDT) Received: from symphonyindia.ti.com (symphony-ftp [192.168.247.11]) by tidmzi-ftp.india.ext.ti.com (Postfix) with SMTP id 8757C3886B for ; Wed, 12 Aug 2009 17:44:43 +0530 (IST) Received: from localhost.localdomain ([192.168.247.76]) by symphonyindia.ti.com (8.13.1/8.12.10) with ESMTP id n7CCCJGT001003; Wed, 12 Aug 2009 17:42:19 +0530 From: Sudhakar Rajashekhara To: davinci-linux-open-source@linux.davincidsp.com Date: Wed, 12 Aug 2009 17:46:24 -0400 Message-Id: <1250113584-9017-1-git-send-email-sudhakar.raj@ti.com> X-Mailer: git-send-email 1.5.6 Cc: Subject: [PATCH v2] davinci: Add platform support for da850/omap-l138 GLCD X-BeenThere: davinci-linux-open-source@linux.davincidsp.com X-Mailman-Version: 2.1.4 Precedence: list List-Id: davinci-linux-open-source.linux.davincidsp.com List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: davinci-linux-open-source-bounces@linux.davincidsp.com Errors-To: davinci-linux-open-source-bounces@linux.davincidsp.com This patch adds platform support for the graphic display (Sharp LK043T1DG01) found on DA850/OMAP-L138 based EVM. Signed-off-by: Sudhakar Rajashekhara --- Since the previous version, following are the modifications: 1. Defined the macros for the LCD back light and LCD power GPIO pins. 2. Made da850_lcd_hw_init() function static. 3. Added gpio_free() for 1st GPIO pin, if gpio_request for the 2nd GPIO pin fails. 4. Removed un-necessary mdelays from da850_lcd_hw_init() function. 5. Also removed LPSC disable/enable sequence from da850_lcd_hw_init() function. 6. Removed the comments for the members of lcd_ctrl_config structure. arch/arm/mach-davinci/board-da850-evm.c | 58 +++++++++++++++++++++++++++ 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, 188 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c index d989346..b05b7f5 100644 --- a/arch/arm/mach-davinci/board-da850-evm.c +++ b/arch/arm/mach-davinci/board-da850-evm.c @@ -17,6 +17,8 @@ #include #include #include +#include +#include #include #include @@ -25,10 +27,16 @@ #include #include #include +#include #define DA850_EVM_PHY_MASK 0x1 #define DA850_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */ +/* GPIO 2[15] is used for LCD Back light - 16 * 2 + 15 = 47*/ +#define DA850_LCD_BL_PIN 47 +/* GPIO 8[10] is used for LCD Power - 16 * 8 + 10 = 138 */ +#define DA850_LCD_PWR_PIN 138 + static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = { .bus_freq = 100, /* kHz */ .bus_delay = 0, /* usec */ @@ -38,6 +46,41 @@ static struct davinci_uart_config da850_evm_uart_config __initdata = { .enabled_uarts = 0x7, }; +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); + + gpio_free(DA850_LCD_BL_PIN); + gpio_free(DA850_LCD_PWR_PIN); + + return 0; +} + static __init void da850_evm_init(void) { struct davinci_soc_info *soc_info = &davinci_soc_info; @@ -86,6 +129,21 @@ static __init void da850_evm_init(void) */ __raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30); __raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30); + + 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 c5efc51..69acb6e 100644 --- a/arch/arm/mach-davinci/da850.c +++ b/arch/arm/mach-davinci/da850.c @@ -290,6 +290,13 @@ static struct clk emac_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), @@ -327,6 +334,7 @@ static struct davinci_clk da850_clks[] = { CLK(NULL, "arm", &arm_clk), CLK(NULL, "rmii", &rmii_clk), CLK("davinci_emac.1", NULL, &emac_clk), + CLK("da8xx_lcdc.0", NULL, &lcdc_clk), CLK(NULL, NULL, NULL), }; @@ -373,6 +381,30 @@ static const struct mux_config da850_pins[] = { MUX_CFG(DA850, MII_RXD_0, 3, 28, 15, 8, false) MUX_CFG(DA850, MDIO_CLK, 4, 0, 15, 8, false) MUX_CFG(DA850, MDIO_D, 4, 4, 15, 8, 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 }; @@ -410,6 +442,16 @@ const short da850_cpgmac_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 11c0971..57eb0b5 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