From 8bed576c1a81d620765ec96f7b4e80dedaef1bcf Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Tue, 26 Nov 2013 11:09:49 +0100 Subject: [PATCH] ARM: 7899/1: sa1100: h3600: refactor LCD GPIO handling Use gpio_request_array to request all GPIOs at once. Also don't call gpio_free. There is little point freeing LCD gpios once they are requested. Instead guard them with bool variable. Signed-off-by: Dmitry Eremin-Solenikov Acked-by: Linus Walleij Signed-off-by: Russell King --- arch/arm/mach-sa1100/h3600.c | 48 +++++++++++++++++++----------------- 1 file changed, 26 insertions(+), 22 deletions(-) diff --git a/arch/arm/mach-sa1100/h3600.c b/arch/arm/mach-sa1100/h3600.c index b8dc5bd22623..559c2a0a40d9 100644 --- a/arch/arm/mach-sa1100/h3600.c +++ b/arch/arm/mach-sa1100/h3600.c @@ -28,35 +28,39 @@ /* * helper for sa1100fb */ +static struct gpio h3600_lcd_gpio[] = { + { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD power" }, + { H3600_EGPIO_LCD_PCI, GPIOF_OUT_INIT_LOW, "LCD control" }, + { H3600_EGPIO_LCD_5V_ON, GPIOF_OUT_INIT_LOW, "LCD 5v" }, + { H3600_EGPIO_LVDD_ON, GPIOF_OUT_INIT_LOW, "LCD 9v/-6.5v" }, +}; + +static bool h3600_lcd_request(void) +{ + static bool h3600_lcd_ok; + int rc; + + if (h3600_lcd_ok) + return true; + + rc = gpio_request_array(h3600_lcd_gpio, ARRAY_SIZE(h3600_lcd_gpio)); + if (rc) + pr_err("%s: can't request GPIOs\n", __func__); + else + h3600_lcd_ok = true; + + return h3600_lcd_ok; +} + static void h3600_lcd_power(int enable) { - if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) { - pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__); - goto err1; - } - if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) { - pr_err("%s: can't request H3XXX_EGPIO_LCD_PCI\n", __func__); - goto err2; - } - if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) { - pr_err("%s: can't request H3XXX_EGPIO_LCD_5V_ON\n", __func__); - goto err3; - } - if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) { - pr_err("%s: can't request H3600_EGPIO_LVDD_ON\n", __func__); - goto err4; - } + if (!h3600_lcd_request()) + return; gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable); gpio_direction_output(H3600_EGPIO_LCD_PCI, enable); gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable); gpio_direction_output(H3600_EGPIO_LVDD_ON, enable); - - gpio_free(H3600_EGPIO_LVDD_ON); -err4: gpio_free(H3600_EGPIO_LCD_5V_ON); -err3: gpio_free(H3600_EGPIO_LCD_PCI); -err2: gpio_free(H3XXX_EGPIO_LCD_ON); -err1: return; } static const struct sa1100fb_rgb h3600_rgb_16 = { -- 2.39.5