From: Neil Sikka <neilsikka@xxxxxx>
This patch adds support for DM365 VPSS
Reviewed-by: Muralidharan Karicheri <m-karicheri2@xxxxxx>
Mandatory-Reviewer: Hans Verkuil <hverkuil@xxxxxxxxx>
Signed-off-by: Neil Sikka <neilsikka@xxxxxx>
---
Applies to v4l-dvb linux-next repository
drivers/media/video/davinci/vpss.c | 232 ++++++++++++++++++++++++++++++++----
include/media/davinci/vpss.h | 59 +++++++++-
2 files changed, 268 insertions(+), 23 deletions(-)
diff --git a/drivers/media/video/davinci/vpss.c b/drivers/media/video/davinci/vpss.c
index 6d709ca..83dac1b 100644
--- a/drivers/media/video/davinci/vpss.c
+++ b/drivers/media/video/davinci/vpss.c
@@ -42,9 +42,12 @@ MODULE_AUTHOR("Texas Instruments");
/* masks and shifts */
#define VPSS_HSSISEL_SHIFT 4
-/*
+/* lock to write into common register */
+static spinlock_t vpss_lock;
+
+/**
* vpss operations. Depends on platform. Not all functions are available
- * on all platforms. The api, first check if a functio is available before
+ * on all platforms. The api, first check if a function is available before
* invoking it. In the probe, the function ptrs are intialized based on
* vpss name. vpss name can be "dm355_vpss", "dm644x_vpss" etc.
*/
@@ -53,14 +56,19 @@ struct vpss_hw_ops {
int (*enable_clock)(enum vpss_clock_sel clock_sel, int en);
/* select input to ccdc */
void (*select_ccdc_source)(enum vpss_ccdc_source_sel src_sel);
- /* clear wbl overlflow bit */
+ /* clear wbl overflow bit */
int (*clear_wbl_overflow)(enum vpss_wbl_sel wbl_sel);
+ /*set sync polarity */
+ void (*set_sync_pol)(struct vpss_sync_pol);
+ /*set the PG_FRAME_SIZE register*/
+ void (*set_pg_frame_size)(struct vpss_pg_frame_size);
};
/* vpss configuration */
struct vpss_oper_config {
- __iomem void *vpss_bl_regs_base;
- __iomem void *vpss_regs_base;
+ __iomem void *vpss_regs_base0;
+ __iomem void *vpss_regs_base1;
+ resource_size_t *vpss_regs_base2;
struct resource *r1;
resource_size_t len1;
struct resource *r2;
@@ -75,22 +83,32 @@ static struct vpss_oper_config oper_cfg;
/* register access routines */
static inline u32 bl_regr(u32 offset)
{
- return __raw_readl(oper_cfg.vpss_bl_regs_base + offset);
+ return __raw_readl(oper_cfg.vpss_regs_base0 + offset);
}
static inline void bl_regw(u32 val, u32 offset)
{
- __raw_writel(val, oper_cfg.vpss_bl_regs_base + offset);
+ __raw_writel(val, oper_cfg.vpss_regs_base0 + offset);
+}
+
+static inline u32 isp5_read(u32 offset)
+{
+ return __raw_readl(oper_cfg.vpss_regs_base0 + offset);
+}
+
+static inline void isp5_write(u32 val, u32 offset)
+{
+ __raw_writel(val, oper_cfg.vpss_regs_base0 + offset);
}
static inline u32 vpss_regr(u32 offset)
{
- return __raw_readl(oper_cfg.vpss_regs_base + offset);
+ return __raw_readl(oper_cfg.vpss_regs_base1 + offset);
}
static inline void vpss_regw(u32 val, u32 offset)
{
- __raw_writel(val, oper_cfg.vpss_regs_base + offset);
+ __raw_writel(val, oper_cfg.vpss_regs_base1 + offset);
}
static void dm355_select_ccdc_source(enum vpss_ccdc_source_sel src_sel)
@@ -98,12 +116,25 @@ static void dm355_select_ccdc_source(enum vpss_ccdc_source_sel src_sel)
bl_regw(src_sel << VPSS_HSSISEL_SHIFT, DM355_VPSSBL_CCDCMUX);
}
+static void dm365_select_ccdc_source(enum vpss_ccdc_source_sel src_sel)
+{
+ u32 temp = isp5_read(DM365_ISP5_CCDCMUX) & ~CCD_SRC_SEL_MASK;
+
+ /* if we are using pattern generator, enable it */
+ if (src_sel == VPSS_PGLPBK || src_sel == VPSS_CCDCPG)
+ temp |= 0x08;
+
+ temp |= (src_sel << CCD_SRC_SEL_SHIFT);
+ isp5_write(temp, DM365_ISP5_CCDCMUX);
+}
+
int vpss_select_ccdc_source(enum vpss_ccdc_source_sel src_sel)
{
if (!oper_cfg.hw_ops.select_ccdc_source)
return -1;
- dm355_select_ccdc_source(src_sel);
+ oper_cfg.hw_ops.select_ccdc_source(src_sel);
+
return 0;
}
EXPORT_SYMBOL(vpss_select_ccdc_source);
@@ -120,9 +151,56 @@ static int dm644x_clear_wbl_overflow(enum vpss_wbl_sel wbl_sel)
mask = ~(mask << wbl_sel);
val = bl_regr(DM644X_SBL_PCR_VPSS) & mask;
bl_regw(val, DM644X_SBL_PCR_VPSS);
+
return 0;
}
+static void dm365_enable_irq(void)
+{
+ u32 current_val = isp5_read(DM365_VPSS_INTSEL1);
+ /*just enable INTSEL0 and INTSEL1 and leave everything else as is*/
+ current_val &= ~(CCD_INT_SEL_MASK);
+ current_val |= BIT_MASK(8);
+ isp5_write(current_val, DM365_VPSS_INTSEL1);
+}
+
+void dm365_set_sync_pol(struct vpss_sync_pol sync)
+{
+ int val = 0;
+ val = isp5_read(DM365_ISP5_CCDCMUX);
+
+ val |= (sync.ccdpg_hdpol << DM365_CCDC_PG_HD_POL_SHIFT);
+ val |= (sync.ccdpg_vdpol << DM365_CCDC_PG_VD_POL_SHIFT);
+
+ isp5_write(val, DM365_ISP5_CCDCMUX);
+}
+
+void vpss_set_sync_pol(struct vpss_sync_pol sync)
+{
+ if (!oper_cfg.hw_ops.set_sync_pol)
+ return;
+
+ oper_cfg.hw_ops.set_sync_pol(sync);
+}
+EXPORT_SYMBOL(vpss_set_sync_pol);
+
+void dm365_set_pg_frame_size(struct vpss_pg_frame_size frame_size)
+{
+ int current_reg = ((frame_size.hlpfr >> 1) - 1) << 16;
+
+ current_reg |= (frame_size.pplen - 1);
+ isp5_write(current_reg, DM365_ISP5_PG_FRAME_SIZE);
+}
+
+void vpss_set_pg_frame_size(struct vpss_pg_frame_size frame_size)
+{
+ if (!oper_cfg.hw_ops.set_pg_frame_size)
+ return;
+
+ oper_cfg.hw_ops.set_pg_frame_size(frame_size);
+}
+EXPORT_SYMBOL(vpss_set_pg_frame_size);
+
int vpss_clear_wbl_overflow(enum vpss_wbl_sel wbl_sel)
{
if (!oper_cfg.hw_ops.clear_wbl_overflow)
@@ -132,7 +210,7 @@ int vpss_clear_wbl_overflow(enum vpss_wbl_sel wbl_sel)
}
EXPORT_SYMBOL(vpss_clear_wbl_overflow);
-/*
+/**
* dm355_enable_clock - Enable VPSS Clock
* @clock_sel: CLock to be enabled/disabled
* @en: enable/disable flag
@@ -178,6 +256,93 @@ static int dm355_enable_clock(enum vpss_clock_sel clock_sel, int en)
vpss_regw(utemp, DM355_VPSSCLK_CLKCTRL);
spin_unlock_irqrestore(&oper_cfg.vpss_lock, flags);
+
+ return 0;
+}
+
+static int dm365_enable_clock(enum vpss_clock_sel clock_sel, int en)
+{
+ unsigned long flags;
+ u32 utemp, mask = 0x1, shift = 0, offset = DM365_PCCR;
+ u32 (*read)(u32 offset) = isp5_read;
+ void(*write)(u32 val, u32 offset) = isp5_write;
+
+ switch (clock_sel) {
+ case VPSS_BL_CLOCK:
+ break;
+ case VPSS_CCDC_CLOCK:
+ shift = 1;
+ break;
+ case VPSS_H3A_CLOCK:
+ shift = 2;
+ break;
+ case VPSS_RSZ_CLOCK:
+ shift = 3;
+ break;
+ case VPSS_IPIPE_CLOCK:
+ shift = 4;
+ break;
+ case VPSS_IPIPEIF_CLOCK:
+ shift = 5;
+ break;
+ case VPSS_PCLK_INTERNAL:
+ shift = 6;
+ break;
+ case VPSS_PSYNC_CLOCK_SEL:
+ shift = 7;
+ break;
+ case VPSS_VPBE_CLOCK:
+ read = vpss_regr;
+ write = vpss_regw;
+ offset = DM365_VPBE_CLK_CTRL;
+ break;
+ case VPSS_VENC_CLOCK_SEL:
+ shift = 2;
+ read = vpss_regr;
+ write = vpss_regw;
+ offset = DM365_VPBE_CLK_CTRL;
+ break;
+ case VPSS_LDC_CLOCK:
+ shift = 3;
+ read = vpss_regr;
+ write = vpss_regw;
+ offset = DM365_VPBE_CLK_CTRL;
+ break;
+ case VPSS_FDIF_CLOCK:
+ shift = 4;
+ read = vpss_regr;
+ write = vpss_regw;
+ offset = DM365_VPBE_CLK_CTRL;
+ break;
+ case VPSS_OSD_CLOCK_SEL:
+ shift = 6;
+ read = vpss_regr;
+ write = vpss_regw;
+ offset = DM365_VPBE_CLK_CTRL;
+ break;
+ case VPSS_LDC_CLOCK_SEL:
+ shift = 7;
+ read = vpss_regr;
+ write = vpss_regw;
+ offset = DM365_VPBE_CLK_CTRL;
+ break;
+ default:
+ printk(KERN_ERR "dm365_enable_clock: Invalid selector: %d\n",
+ clock_sel);
+ return -1;
+ }
+
+ spin_lock_irqsave(&vpss_lock, flags);
+ utemp = read(offset);
+ if (!en) {
+ mask = ~mask;
+ utemp &= (mask << shift);
+ } else
+ utemp |= (mask << shift);
+
+ write(utemp, offset);
+ spin_unlock_irqrestore(&vpss_lock, flags);
+
return 0;
}
@@ -192,7 +357,7 @@ EXPORT_SYMBOL(vpss_enable_clock);
static int __init vpss_probe(struct platform_device *pdev)
{
- int status, dm355 = 0;
+ int status, dm355 = 0, dm365 = 0;
if (!pdev->dev.platform_data) {
dev_err(&pdev->dev, "no platform data\n");
@@ -202,6 +367,8 @@ static int __init vpss_probe(struct platform_device *pdev)
if (!strcmp(oper_cfg.vpss_name, "dm355_vpss"))
dm355 = 1;
+ else if (!strcmp(oper_cfg.vpss_name, "dm365_vpss"))
+ dm365 = 1;
else if (strcmp(oper_cfg.vpss_name, "dm644x_vpss")) {
dev_err(&pdev->dev, "vpss driver not supported on"
" this platform\n");
@@ -220,13 +387,13 @@ static int __init vpss_probe(struct platform_device *pdev)
if (!oper_cfg.r1)
return -EBUSY;
- oper_cfg.vpss_bl_regs_base = ioremap(oper_cfg.r1->start, oper_cfg.len1);
- if (!oper_cfg.vpss_bl_regs_base) {
+ oper_cfg.vpss_regs_base0 = ioremap(oper_cfg.r1->start, oper_cfg.len1);
+ if (!oper_cfg.vpss_regs_base0) {
status = -EBUSY;
goto fail1;
}
- if (dm355) {
+ if (dm355 || dm365) {
oper_cfg.r2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!oper_cfg.r2) {
status = -ENOENT;
@@ -241,9 +408,9 @@ static int __init vpss_probe(struct platform_device *pdev)
goto fail2;
}
- oper_cfg.vpss_regs_base = ioremap(oper_cfg.r2->start,
+ oper_cfg.vpss_regs_base1 = ioremap(oper_cfg.r2->start,
oper_cfg.len2);
- if (!oper_cfg.vpss_regs_base) {
+ if (!oper_cfg.vpss_regs_base1) {
status = -EBUSY;
goto fail3;
}
@@ -252,9 +419,20 @@ static int __init vpss_probe(struct platform_device *pdev)
if (dm355) {
oper_cfg.hw_ops.enable_clock = dm355_enable_clock;
oper_cfg.hw_ops.select_ccdc_source = dm355_select_ccdc_source;
- } else
+ oper_cfg.hw_ops.set_sync_pol = NULL;
+ oper_cfg.hw_ops.set_pg_frame_size = NULL;
+ } else if (dm365) {
+ oper_cfg.hw_ops.enable_clock = dm365_enable_clock;
+ oper_cfg.hw_ops.select_ccdc_source = dm365_select_ccdc_source;
+ oper_cfg.hw_ops.set_sync_pol = dm365_set_sync_pol;
+ oper_cfg.hw_ops.set_pg_frame_size = dm365_set_pg_frame_size;
+
+ } else if (!strcmp(oper_cfg.vpss_name, "dm644x_vpss"))
oper_cfg.hw_ops.clear_wbl_overflow = dm644x_clear_wbl_overflow;
+ if (dm365)
+ dm365_enable_irq();
+
spin_lock_init(&oper_cfg.vpss_lock);
dev_info(&pdev->dev, "%s vpss probe success\n", oper_cfg.vpss_name);
return 0;
@@ -262,7 +440,7 @@ static int __init vpss_probe(struct platform_device *pdev)
fail3:
release_mem_region(oper_cfg.r2->start, oper_cfg.len2);
fail2:
- iounmap(oper_cfg.vpss_bl_regs_base);
+ iounmap(oper_cfg.vpss_regs_base0);
fail1:
release_mem_region(oper_cfg.r1->start, oper_cfg.len1);
return status;
@@ -270,12 +448,14 @@ fail1:
static int vpss_remove(struct platform_device *pdev)
{
- iounmap(oper_cfg.vpss_bl_regs_base);
+ iounmap(oper_cfg.vpss_regs_base0);
release_mem_region(oper_cfg.r1->start, oper_cfg.len1);
- if (!strcmp(oper_cfg.vpss_name, "dm355_vpss")) {
- iounmap(oper_cfg.vpss_regs_base);
+ if (!strcmp(oper_cfg.vpss_name, "dm355_vpss") ||
+ !strcmp(oper_cfg.vpss_name, "dm365_vpss")) {
+ iounmap(oper_cfg.vpss_regs_base1);
release_mem_region(oper_cfg.r2->start, oper_cfg.len2);
}
+
return 0;
}
@@ -290,11 +470,19 @@ static struct platform_driver vpss_driver = {
static void vpss_exit(void)
{
+ iounmap(oper_cfg.vpss_regs_base2);
+ release_mem_region(*oper_cfg.vpss_regs_base2, 4);
platform_driver_unregister(&vpss_driver);
}
static int __init vpss_init(void)
{
+ if (request_mem_region(VPSS_CLK_CTRL, 4, "vpss_clock_control")) {
+ oper_cfg.vpss_regs_base2 = ioremap(VPSS_CLK_CTRL, 4);
+ __raw_writel(0x18, oper_cfg.vpss_regs_base2);
+ } else
+ return -EBUSY;
+
return platform_driver_register(&vpss_driver);
}
subsys_initcall(vpss_init);
diff --git a/include/media/davinci/vpss.h b/include/media/davinci/vpss.h
index fcdff74..a8583a2 100644
--- a/include/media/davinci/vpss.h
+++ b/include/media/davinci/vpss.h
@@ -26,10 +26,41 @@
#ifndef _VPSS_H
#define _VPSS_H
+/* dm365 stuff or wutever like that */
+#define DM365_PCCR 0x04
+#define DM365_ISP_REG_BASE 0x01c70000
+#define DM365_VPSS_REG_BASE 0x01c70200
+#define DM365_VPBE_CLK_CTRL 0x00
+#define DM365_ISP5_CCDCMUX 0x20
+#define DM365_ISP5_PG_FRAME_SIZE 0x28
+#define DM365_CCDC_PG_VD_POL_SHIFT 0
+#define DM365_CCDC_PG_HD_POL_SHIFT 1
+#define DM365_VPSS_INTSEL1 0x10
+#define VPSS_CLK_CTRL 0x01C40044
+#define CCD_SRC_SEL_MASK (BIT_MASK(5) | BIT_MASK(4))
+#define CCD_SRC_SEL_SHIFT 4
+#define CCD_INT_SEL_MASK (BIT_MASK(12) | BIT_MASK(11)|\
+ BIT_MASK(10) | BIT_MASK(9) |\
+ BIT_MASK(8) | BIT_MASK(4) |\
+ BIT_MASK(3) | BIT_MASK(2) |\
+ BIT_MASK(1) | BIT_MASK(0))
+
/* selector for ccdc input selection on DM355 */
enum vpss_ccdc_source_sel {
VPSS_CCDCIN,
- VPSS_HSSIIN
+ VPSS_HSSIIN,
+ VPSS_PGLPBK,
+ VPSS_CCDCPG
+};
+
+struct vpss_sync_pol {
+ unsigned int ccdpg_hdpol:1;
+ unsigned int ccdpg_vdpol:1;
+};
+
+struct vpss_pg_frame_size {
+ short hlpfr;
+ short pplen;
};
/* Used for enable/diable VPSS Clock */
@@ -47,12 +78,38 @@ enum vpss_clock_sel {
*/
VPSS_VENC_CLOCK_SEL,
VPSS_VPBE_CLOCK,
+ /* DM365 only clocks */
+ VPSS_IPIPEIF_CLOCK,
+ VPSS_RSZ_CLOCK,
+ VPSS_BL_CLOCK,
+ /*
+ * When using VPSS_PCLK_INTERNAL in vpss_enable_clock() api
+ * following applies:-
+ * en = 0 disable internal PCLK
+ * en = 1 enables internal PCLK
+ */
+ VPSS_PCLK_INTERNAL,
+ /*
+ * When using VPSS_PSYNC_CLOCK_SEL in vpss_enable_clock() api
+ * following applies:-
+ * en = 0 enables MMR clock
+ * en = 1 enables VPSS clock
+ */
+ VPSS_PSYNC_CLOCK_SEL,
+ VPSS_LDC_CLOCK_SEL,
+ VPSS_OSD_CLOCK_SEL,
+ VPSS_FDIF_CLOCK,
+ VPSS_LDC_CLOCK
};
/* select input to ccdc on dm355 */
int vpss_select_ccdc_source(enum vpss_ccdc_source_sel src_sel);
/* enable/disable a vpss clock, 0 - success, -1 - failure */
int vpss_enable_clock(enum vpss_clock_sel clock_sel, int en);
+/*set sync polarity, only implemented for DM365*/
+void vpss_set_sync_pol(struct vpss_sync_pol);
+/*set the PG_FRAME_SIZE register, only implemented for DM365*/
+void vpss_set_pg_frame_size(struct vpss_pg_frame_size);
/* wbl reset for dm644x */
enum vpss_wbl_sel {
--
1.6.0.4
--
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