FB: sa11x0: convert shannon display enable accesses to use GPIO subsystem
Rather than accessing GPSR and GPCR directly, use the GPIO subsystem instead. Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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@ -21,7 +21,7 @@
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#define SHANNON_GPIO_U3_RTS GPIO_GPIO (19) /* ?? */
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#define SHANNON_GPIO_U3_CTS GPIO_GPIO (20) /* ?? */
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#define SHANNON_GPIO_SENSE_12V GPIO_GPIO (21) /* Input, 12v flash unprotect detected */
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#define SHANNON_GPIO_DISP_EN GPIO_GPIO (22) /* out */
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#define SHANNON_GPIO_DISP_EN 22 /* out */
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/* XXX GPIO 23 unaccounted for */
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#define SHANNON_GPIO_EJECT_0 GPIO_GPIO (24) /* in */
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#define SHANNON_IRQ_GPIO_EJECT_0 IRQ_GPIO24
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@ -173,6 +173,7 @@
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/cpufreq.h>
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#include <linux/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/mutex.h>
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@ -796,10 +797,8 @@ static void sa1100fb_enable_controller(struct sa1100fb_info *fbi)
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DBAR2 = fbi->dbar2;
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LCCR0 |= LCCR0_LEN;
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if (machine_is_shannon()) {
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GPDR |= SHANNON_GPIO_DISP_EN;
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GPSR = SHANNON_GPIO_DISP_EN;
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}
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if (machine_is_shannon())
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gpio_set_value(SHANNON_GPIO_DISP_EN, 1);
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dev_dbg(fbi->dev, "DBAR1 = 0x%08lx\n", DBAR1);
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dev_dbg(fbi->dev, "DBAR2 = 0x%08lx\n", DBAR2);
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@ -815,9 +814,8 @@ static void sa1100fb_disable_controller(struct sa1100fb_info *fbi)
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dev_dbg(fbi->dev, "Disabling LCD controller\n");
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if (machine_is_shannon()) {
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GPCR = SHANNON_GPIO_DISP_EN;
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}
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if (machine_is_shannon())
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gpio_set_value(SHANNON_GPIO_DISP_EN, 0);
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set_current_state(TASK_UNINTERRUPTIBLE);
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add_wait_queue(&fbi->ctrlr_wait, &wait);
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@ -1230,6 +1228,13 @@ static int __devinit sa1100fb_probe(struct platform_device *pdev)
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goto failed;
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}
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if (machine_is_shannon()) {
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ret = gpio_request_one(SHANNON_GPIO_DISP_EN,
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GPIOF_OUT_INIT_LOW, "display enable");
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if (ret)
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goto err_free_irq;
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}
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/*
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* This makes sure that our colour bitfield
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* descriptors are correctly initialised.
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@ -1240,7 +1245,7 @@ static int __devinit sa1100fb_probe(struct platform_device *pdev)
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ret = register_framebuffer(&fbi->fb);
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if (ret < 0)
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goto err_free_irq;
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goto err_reg_fb;
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#ifdef CONFIG_CPU_FREQ
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fbi->freq_transition.notifier_call = sa1100fb_freq_transition;
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@ -1252,6 +1257,9 @@ static int __devinit sa1100fb_probe(struct platform_device *pdev)
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/* This driver cannot be unloaded at the moment */
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return 0;
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err_reg_fb:
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if (machine_is_shannon())
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gpio_free(SHANNON_GPIO_DISP_EN);
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err_free_irq:
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free_irq(irq, fbi);
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failed:
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