[AVR32] Implement platform hooks for atmel_lcdfb driver

This modifies and extends the existing lcdc platform code to support
the new atmel_lcdfb driver. The ATSTK1000 board code is set up to use
the on-board Samsung LTV350QV LCD panel.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 60 insertions, 17 deletions

diff --git a/arch/avr32/mach-at32ap/at32ap7000.c b/arch/avr32/mach-at32ap/at32ap7000.c
index 56db45b99a0f..1d2bf347a1d6 100644
--- a/arch/avr32/mach-at32ap/at32ap7000.c
+++ b/arch/avr32/mach-at32ap/at32ap7000.c
@@ -6,6 +6,7 @@
  * published by the Free Software Foundation.
  */
 #include <linux/clk.h>
+#include <linux/fb.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
@@ -17,6 +18,8 @@
 #include <asm/arch/portmux.h>
 #include <asm/arch/sm.h>
 
+#include <video/atmel_lcdc.h>
+
 #include "clock.h"
 #include "hmatrix.h"
 #include "pio.h"
@@ -881,20 +884,26 @@ at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n)
 /* --------------------------------------------------------------------
  *  LCDC
  * -------------------------------------------------------------------- */
-static struct lcdc_platform_data lcdc0_data;
-static struct resource lcdc0_resource[] = {
+static struct atmel_lcdfb_info atmel_lcdfb0_data;
+static struct resource atmel_lcdfb0_resource[] = {
         {
                 .start          = 0xff000000,
                 .end            = 0xff000fff,
                 .flags          = IORESOURCE_MEM,
         },
         IRQ(1),
+        {
+                /* Placeholder for pre-allocated fb memory */
+                .start          = 0x00000000,
+                .end            = 0x00000000,
+                .flags          = 0,
+        },
 };
-DEFINE_DEV_DATA(lcdc, 0);
-DEV_CLK(hclk, lcdc0, hsb, 7);
-static struct clk lcdc0_pixclk = {
-        .name           = "pixclk",
-        .dev            = &lcdc0_device.dev,
+DEFINE_DEV_DATA(atmel_lcdfb, 0);
+DEV_CLK(hck1, atmel_lcdfb0, hsb, 7);
+static struct clk atmel_lcdfb0_pixclk = {
+        .name           = "lcdc_clk",
+        .dev            = &atmel_lcdfb0_device.dev,
         .mode           = genclk_mode,
         .get_rate       = genclk_get_rate,
         .set_rate       = genclk_set_rate,
@@ -903,13 +912,34 @@ static struct clk lcdc0_pixclk = {
 };
 
 struct platform_device *__init
-at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
+at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
+                     unsigned long fbmem_start, unsigned long fbmem_len)
 {
         struct platform_device *pdev;
+        struct atmel_lcdfb_info *info;
+        struct fb_monspecs *monspecs;
+        struct fb_videomode *modedb;
+        unsigned int modedb_size;
+
+        /*
+         * Do a deep copy of the fb data, monspecs and modedb. Make
+         * sure all allocations are done before setting up the
+         * portmux.
+         */
+        monspecs = kmemdup(data->default_monspecs,
+                           sizeof(struct fb_monspecs), GFP_KERNEL);
+        if (!monspecs)
+                return NULL;
+
+        modedb_size = sizeof(struct fb_videomode) * monspecs->modedb_len;
+        modedb = kmemdup(monspecs->modedb, modedb_size, GFP_KERNEL);
+        if (!modedb)
+                goto err_dup_modedb;
+        monspecs->modedb = modedb;
 
         switch (id) {
         case 0:
-                pdev = &lcdc0_device;
+                pdev = &atmel_lcdfb0_device;
                 select_peripheral(PC(19), PERIPH_A, 0); /* CC     */
                 select_peripheral(PC(20), PERIPH_A, 0); /* HSYNC  */
                 select_peripheral(PC(21), PERIPH_A, 0); /* PCLK   */
@@ -942,19 +972,32 @@ at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
                 select_peripheral(PD(16), PERIPH_A, 0); /* DATA22 */
                 select_peripheral(PD(17), PERIPH_A, 0); /* DATA23 */
 
-                clk_set_parent(&lcdc0_pixclk, &pll0);
-                clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0));
+                clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
+                clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
                 break;
 
         default:
-                return NULL;
+                goto err_invalid_id;
         }
 
-        memcpy(pdev->dev.platform_data, data,
-               sizeof(struct lcdc_platform_data));
+        if (fbmem_len) {
+                pdev->resource[2].start = fbmem_start;
+                pdev->resource[2].end = fbmem_start + fbmem_len - 1;
+                pdev->resource[2].flags = IORESOURCE_MEM;
+        }
+
+        info = pdev->dev.platform_data;
+        memcpy(info, data, sizeof(struct atmel_lcdfb_info));
+        info->default_monspecs = monspecs;
 
         platform_device_register(pdev);
         return pdev;
+
+err_invalid_id:
+        kfree(modedb);
+err_dup_modedb:
+        kfree(monspecs);
+        return NULL;
 }
 
 /* --------------------------------------------------------------------
@@ -1037,8 +1080,8 @@ struct clk *at32_clock_list[] = {
         &macb1_pclk,
         &atmel_spi0_spi_clk,
         &atmel_spi1_spi_clk,
-        &lcdc0_hclk,
-        &lcdc0_pixclk,
+        &atmel_lcdfb0_hck1,
+        &atmel_lcdfb0_pixclk,
         &gclk0,
         &gclk1,
         &gclk2,
@@ -1077,7 +1120,7 @@ void __init at32_clock_init(void)
         genclk_init_parent(&gclk2);
         genclk_init_parent(&gclk3);
         genclk_init_parent(&gclk4);
-        genclk_init_parent(&lcdc0_pixclk);
+        genclk_init_parent(&atmel_lcdfb0_pixclk);
 
         /*
          * Turn on all clocks that have at least one user already, and