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fbdev: sh_mobile_meram: Divide the code into sections
And rename a couple of constants to make prefixes more uniform. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Laurent Pinchart
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762f7cc94b
commit
7554340c7a
@ -9,16 +9,20 @@
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* for more details.
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*/
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#include <linux/device.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/pm_runtime.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <video/sh_mobile_meram.h>
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/* meram registers */
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/* -----------------------------------------------------------------------------
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* MERAM registers
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*/
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#define MEVCR1 0x4
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#define MEVCR1_RST (1 << 31)
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#define MEVCR1_WD (1 << 30)
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@ -81,14 +85,12 @@
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((yszm1) << MExxBSIZE_YSZM1_SHIFT) | \
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((xszm1) << MExxBSIZE_XSZM1_SHIFT))
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#define SH_MOBILE_MERAM_ICB_NUM 32
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static const unsigned long common_regs[] = {
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MEVCR1,
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MEQSEL1,
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MEQSEL2,
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};
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#define CMN_REGS_SIZE ARRAY_SIZE(common_regs)
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#define MERAM_REGS_SIZE ARRAY_SIZE(common_regs)
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static const unsigned long icb_regs[] = {
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MExxCTL,
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@ -117,6 +119,8 @@ struct sh_mobile_meram_icb {
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unsigned int current_reg;
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};
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#define MERAM_ICB_NUM 32
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/*
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* sh_mobile_meram_priv - MERAM device
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* @base: Registers base address
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@ -127,19 +131,19 @@ struct sh_mobile_meram_icb {
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*/
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struct sh_mobile_meram_priv {
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void __iomem *base;
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unsigned long regs[CMN_REGS_SIZE];
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unsigned long regs[MERAM_REGS_SIZE];
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struct mutex lock;
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unsigned long used_icb;
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struct sh_mobile_meram_icb icbs[SH_MOBILE_MERAM_ICB_NUM];
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struct sh_mobile_meram_icb icbs[MERAM_ICB_NUM];
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};
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/* settings */
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#define MERAM_SEC_LINE 15
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#define MERAM_LINE_WIDTH 2048
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#define MERAM_SEC_LINE 15
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#define MERAM_LINE_WIDTH 2048
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/*
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* MERAM/ICB access functions
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/* -----------------------------------------------------------------------------
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* Registers access
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*/
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#define MERAM_ICB_OFFSET(base, idx, off) ((base) + (off) + (idx) * 0x20)
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@ -167,8 +171,8 @@ static inline unsigned long meram_read_reg(void __iomem *base, unsigned int off)
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return ioread32(base + off);
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}
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/*
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* register ICB
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/* -----------------------------------------------------------------------------
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* Allocation
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*/
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#define MERAM_CACHE_START(p) ((p) >> 16)
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@ -176,10 +180,7 @@ static inline unsigned long meram_read_reg(void __iomem *base, unsigned int off)
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#define MERAM_CACHE_SET(o, s) ((((o) & 0xffff) << 16) | \
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(((o) + (s) - 1) & 0xffff))
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/*
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* check if there's no overlaps in MERAM allocation.
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*/
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/* Check if there's no overlaps in MERAM allocation. */
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static int meram_check_overlap(struct sh_mobile_meram_priv *priv,
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const struct sh_mobile_meram_icb_cfg *new)
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{
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@ -194,7 +195,7 @@ static int meram_check_overlap(struct sh_mobile_meram_priv *priv,
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test_bit(new->cache_icb, &priv->used_icb))
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return 1;
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for (i = 0; i < SH_MOBILE_MERAM_ICB_NUM; i++) {
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for (i = 0; i < MERAM_ICB_NUM; i++) {
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if (!test_bit(i, &priv->used_icb))
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continue;
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@ -211,10 +212,7 @@ static int meram_check_overlap(struct sh_mobile_meram_priv *priv,
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return 0;
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}
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/*
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* mark the specified ICB as used
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*/
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/* Mark the specified ICB as used. */
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static void meram_mark(struct sh_mobile_meram_priv *priv,
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const struct sh_mobile_meram_icb_cfg *new,
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int pixelformat)
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@ -230,10 +228,7 @@ static void meram_mark(struct sh_mobile_meram_priv *priv,
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priv->icbs[new->marker_icb].pixelformat = pixelformat;
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}
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/*
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* unmark the specified ICB as used
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*/
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/* Unmark the specified ICB as used. */
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static void meram_unmark(struct sh_mobile_meram_priv *priv,
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const struct sh_mobile_meram_icb_cfg *icb)
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{
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@ -241,9 +236,7 @@ static void meram_unmark(struct sh_mobile_meram_priv *priv,
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__clear_bit(icb->cache_icb, &priv->used_icb);
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}
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/*
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* is this a YCbCr(NV12, NV16 or NV24) colorspace
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*/
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/* Is this a YCbCr(NV12, NV16 or NV24) colorspace? */
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static int is_nvcolor(int cspace)
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{
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if (cspace == SH_MOBILE_MERAM_PF_NV ||
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@ -252,9 +245,7 @@ static int is_nvcolor(int cspace)
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return 0;
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}
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/*
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* set the next address to fetch
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*/
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/* Set the next address to fetch. */
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static void meram_set_next_addr(struct sh_mobile_meram_priv *priv,
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const struct sh_mobile_meram_cfg *cfg,
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unsigned long base_addr_y,
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@ -282,9 +273,7 @@ static void meram_set_next_addr(struct sh_mobile_meram_priv *priv,
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}
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}
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/*
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* get the next ICB address
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*/
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/* Get the next ICB address. */
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static void
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meram_get_next_icb_addr(struct sh_mobile_meram_info *pdata,
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const struct sh_mobile_meram_cfg *cfg,
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@ -307,10 +296,7 @@ meram_get_next_icb_addr(struct sh_mobile_meram_info *pdata,
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#define MERAM_CALC_BYTECOUNT(x, y) \
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(((x) * (y) + (MERAM_LINE_WIDTH - 1)) & ~(MERAM_LINE_WIDTH - 1))
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/*
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* initialize MERAM
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*/
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/* Initialize MERAM. */
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static int meram_init(struct sh_mobile_meram_priv *priv,
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const struct sh_mobile_meram_icb_cfg *icb,
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unsigned int xres, unsigned int yres,
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@ -395,8 +381,8 @@ static void meram_deinit(struct sh_mobile_meram_priv *priv,
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priv->icbs[icb->marker_icb].cache_unit = 0;
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}
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/*
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* register the ICB
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/* -----------------------------------------------------------------------------
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* Registration/unregistration
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*/
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static int sh_mobile_meram_register(struct sh_mobile_meram_info *pdata,
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@ -545,13 +531,24 @@ static int sh_mobile_meram_update(struct sh_mobile_meram_info *pdata,
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return 0;
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}
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static struct sh_mobile_meram_ops sh_mobile_meram_ops = {
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.module = THIS_MODULE,
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.meram_register = sh_mobile_meram_register,
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.meram_unregister = sh_mobile_meram_unregister,
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.meram_update = sh_mobile_meram_update,
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};
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/* -----------------------------------------------------------------------------
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* Power management
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*/
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static int sh_mobile_meram_runtime_suspend(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev);
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unsigned int i, j;
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for (i = 0; i < CMN_REGS_SIZE; i++)
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for (i = 0; i < MERAM_REGS_SIZE; i++)
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priv->regs[i] = meram_read_reg(priv->base, common_regs[i]);
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for (i = 0; i < 32; i++) {
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@ -583,7 +580,7 @@ static int sh_mobile_meram_runtime_resume(struct device *dev)
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priv->icbs[i].regs[j]);
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}
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for (i = 0; i < CMN_REGS_SIZE; i++)
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for (i = 0; i < MERAM_REGS_SIZE; i++)
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meram_write_reg(priv->base, common_regs[i], priv->regs[i]);
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return 0;
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}
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@ -593,15 +590,8 @@ static const struct dev_pm_ops sh_mobile_meram_dev_pm_ops = {
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.runtime_resume = sh_mobile_meram_runtime_resume,
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};
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static struct sh_mobile_meram_ops sh_mobile_meram_ops = {
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.module = THIS_MODULE,
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.meram_register = sh_mobile_meram_register,
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.meram_unregister = sh_mobile_meram_unregister,
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.meram_update = sh_mobile_meram_update,
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};
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/*
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* initialize MERAM
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/* -----------------------------------------------------------------------------
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* Probe/remove and driver init/exit
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*/
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static int __devinit sh_mobile_meram_probe(struct platform_device *pdev)
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