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path: root/drivers/video/fbdev/omap2/dss/hdmi_phy.c
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Diffstat (limited to 'drivers/video/fbdev/omap2/dss/hdmi_phy.c')
-rw-r--r--drivers/video/fbdev/omap2/dss/hdmi_phy.c265
1 files changed, 180 insertions, 85 deletions
diff --git a/drivers/video/fbdev/omap2/dss/hdmi_phy.c b/drivers/video/fbdev/omap2/dss/hdmi_phy.c
index dd376ce8da01..e007ac892d79 100644
--- a/drivers/video/fbdev/omap2/dss/hdmi_phy.c
+++ b/drivers/video/fbdev/omap2/dss/hdmi_phy.c
@@ -12,11 +12,22 @@
#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
+#include <linux/slab.h>
#include <video/omapdss.h>
#include "dss.h"
#include "hdmi.h"
+struct hdmi_phy_features {
+ bool bist_ctrl;
+ bool calc_freqout;
+ bool ldo_voltage;
+ unsigned long dcofreq_min;
+ unsigned long max_phy;
+};
+
+static const struct hdmi_phy_features *phy_feat;
+
void hdmi_phy_dump(struct hdmi_phy_data *phy, struct seq_file *s)
{
#define DUMPPHY(r) seq_printf(s, "%-35s %08x\n", #r,\
@@ -26,53 +37,104 @@ void hdmi_phy_dump(struct hdmi_phy_data *phy, struct seq_file *s)
DUMPPHY(HDMI_TXPHY_DIGITAL_CTRL);
DUMPPHY(HDMI_TXPHY_POWER_CTRL);
DUMPPHY(HDMI_TXPHY_PAD_CFG_CTRL);
+ if (phy_feat->bist_ctrl)
+ DUMPPHY(HDMI_TXPHY_BIST_CONTROL);
}
-static irqreturn_t hdmi_irq_handler(int irq, void *data)
+int hdmi_phy_parse_lanes(struct hdmi_phy_data *phy, const u32 *lanes)
{
- struct hdmi_wp_data *wp = data;
- u32 irqstatus;
-
- irqstatus = hdmi_wp_get_irqstatus(wp);
- hdmi_wp_set_irqstatus(wp, irqstatus);
-
- if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
- irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
- /*
- * If we get both connect and disconnect interrupts at the same
- * time, turn off the PHY, clear interrupts, and restart, which
- * raises connect interrupt if a cable is connected, or nothing
- * if cable is not connected.
- */
- hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
-
- hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
- HDMI_IRQ_LINK_DISCONNECT);
-
- hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
- } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
- hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
- } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
- hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
+ int i;
+
+ for (i = 0; i < 8; i += 2) {
+ u8 lane, pol;
+ int dx, dy;
+
+ dx = lanes[i];
+ dy = lanes[i + 1];
+
+ if (dx < 0 || dx >= 8)
+ return -EINVAL;
+
+ if (dy < 0 || dy >= 8)
+ return -EINVAL;
+
+ if (dx & 1) {
+ if (dy != dx - 1)
+ return -EINVAL;
+ pol = 1;
+ } else {
+ if (dy != dx + 1)
+ return -EINVAL;
+ pol = 0;
+ }
+
+ lane = dx / 2;
+
+ phy->lane_function[lane] = i / 2;
+ phy->lane_polarity[lane] = pol;
}
- return IRQ_HANDLED;
+ return 0;
}
-int hdmi_phy_enable(struct hdmi_phy_data *phy, struct hdmi_wp_data *wp,
- struct hdmi_config *cfg)
+static void hdmi_phy_configure_lanes(struct hdmi_phy_data *phy)
{
- u16 r = 0;
- u32 irqstatus;
-
- hdmi_wp_clear_irqenable(wp, 0xffffffff);
-
- irqstatus = hdmi_wp_get_irqstatus(wp);
- hdmi_wp_set_irqstatus(wp, irqstatus);
+ static const u16 pad_cfg_list[] = {
+ 0x0123,
+ 0x0132,
+ 0x0312,
+ 0x0321,
+ 0x0231,
+ 0x0213,
+ 0x1023,
+ 0x1032,
+ 0x3012,
+ 0x3021,
+ 0x2031,
+ 0x2013,
+ 0x1203,
+ 0x1302,
+ 0x3102,
+ 0x3201,
+ 0x2301,
+ 0x2103,
+ 0x1230,
+ 0x1320,
+ 0x3120,
+ 0x3210,
+ 0x2310,
+ 0x2130,
+ };
+
+ u16 lane_cfg = 0;
+ int i;
+ unsigned lane_cfg_val;
+ u16 pol_val = 0;
+
+ for (i = 0; i < 4; ++i)
+ lane_cfg |= phy->lane_function[i] << ((3 - i) * 4);
+
+ pol_val |= phy->lane_polarity[0] << 0;
+ pol_val |= phy->lane_polarity[1] << 3;
+ pol_val |= phy->lane_polarity[2] << 2;
+ pol_val |= phy->lane_polarity[3] << 1;
+
+ for (i = 0; i < ARRAY_SIZE(pad_cfg_list); ++i)
+ if (pad_cfg_list[i] == lane_cfg)
+ break;
+
+ if (WARN_ON(i == ARRAY_SIZE(pad_cfg_list)))
+ i = 0;
+
+ lane_cfg_val = i;
+
+ REG_FLD_MOD(phy->base, HDMI_TXPHY_PAD_CFG_CTRL, lane_cfg_val, 26, 22);
+ REG_FLD_MOD(phy->base, HDMI_TXPHY_PAD_CFG_CTRL, pol_val, 30, 27);
+}
- r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
- if (r)
- return r;
+int hdmi_phy_configure(struct hdmi_phy_data *phy, struct hdmi_config *cfg)
+{
+ u8 freqout;
/*
* Read address 0 in order to get the SCP reset done completed
@@ -81,79 +143,112 @@ int hdmi_phy_enable(struct hdmi_phy_data *phy, struct hdmi_wp_data *wp,
hdmi_read_reg(phy->base, HDMI_TXPHY_TX_CTRL);
/*
+ * In OMAP5+, the HFBITCLK must be divided by 2 before issuing the
+ * HDMI_PHYPWRCMD_LDOON command.
+ */
+ if (phy_feat->bist_ctrl)
+ REG_FLD_MOD(phy->base, HDMI_TXPHY_BIST_CONTROL, 1, 11, 11);
+
+ if (phy_feat->calc_freqout) {
+ /* DCOCLK/10 is pixel clock, compare pclk with DCOCLK_MIN/10 */
+ u32 dco_min = phy_feat->dcofreq_min / 10;
+ u32 pclk = cfg->timings.pixelclock;
+
+ if (pclk < dco_min)
+ freqout = 0;
+ else if ((pclk >= dco_min) && (pclk < phy_feat->max_phy))
+ freqout = 1;
+ else
+ freqout = 2;
+ } else {
+ freqout = 1;
+ }
+
+ /*
* Write to phy address 0 to configure the clock
* use HFBITCLK write HDMI_TXPHY_TX_CONTROL_FREQOUT field
*/
- REG_FLD_MOD(phy->base, HDMI_TXPHY_TX_CTRL, 0x1, 31, 30);
+ REG_FLD_MOD(phy->base, HDMI_TXPHY_TX_CTRL, freqout, 31, 30);
/* Write to phy address 1 to start HDMI line (TXVALID and TMDSCLKEN) */
hdmi_write_reg(phy->base, HDMI_TXPHY_DIGITAL_CTRL, 0xF0000000);
/* Setup max LDO voltage */
- REG_FLD_MOD(phy->base, HDMI_TXPHY_POWER_CTRL, 0xB, 3, 0);
+ if (phy_feat->ldo_voltage)
+ REG_FLD_MOD(phy->base, HDMI_TXPHY_POWER_CTRL, 0xB, 3, 0);
- /* Write to phy address 3 to change the polarity control */
- REG_FLD_MOD(phy->base, HDMI_TXPHY_PAD_CFG_CTRL, 0x1, 27, 27);
-
- r = request_threaded_irq(phy->irq, NULL, hdmi_irq_handler,
- IRQF_ONESHOT, "OMAP HDMI", wp);
- if (r) {
- DSSERR("HDMI IRQ request failed\n");
- hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
- return r;
- }
-
- hdmi_wp_set_irqenable(wp,
- HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
+ hdmi_phy_configure_lanes(phy);
return 0;
}
-void hdmi_phy_disable(struct hdmi_phy_data *phy, struct hdmi_wp_data *wp)
+static const struct hdmi_phy_features omap44xx_phy_feats = {
+ .bist_ctrl = false,
+ .calc_freqout = false,
+ .ldo_voltage = true,
+ .dcofreq_min = 500000000,
+ .max_phy = 185675000,
+};
+
+static const struct hdmi_phy_features omap54xx_phy_feats = {
+ .bist_ctrl = true,
+ .calc_freqout = true,
+ .ldo_voltage = false,
+ .dcofreq_min = 750000000,
+ .max_phy = 186000000,
+};
+
+static int hdmi_phy_init_features(struct platform_device *pdev)
{
- free_irq(phy->irq, wp);
+ struct hdmi_phy_features *dst;
+ const struct hdmi_phy_features *src;
- hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
-}
+ dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL);
+ if (!dst) {
+ dev_err(&pdev->dev, "Failed to allocate HDMI PHY Features\n");
+ return -ENOMEM;
+ }
+
+ switch (omapdss_get_version()) {
+ case OMAPDSS_VER_OMAP4430_ES1:
+ case OMAPDSS_VER_OMAP4430_ES2:
+ case OMAPDSS_VER_OMAP4:
+ src = &omap44xx_phy_feats;
+ break;
-#define PHY_OFFSET 0x300
-#define PHY_SIZE 0x100
+ case OMAPDSS_VER_OMAP5:
+ src = &omap54xx_phy_feats;
+ break;
+
+ default:
+ return -ENODEV;
+ }
+
+ memcpy(dst, src, sizeof(*dst));
+ phy_feat = dst;
+
+ return 0;
+}
int hdmi_phy_init(struct platform_device *pdev, struct hdmi_phy_data *phy)
{
+ int r;
struct resource *res;
- struct resource temp_res;
+
+ r = hdmi_phy_init_features(pdev);
+ if (r)
+ return r;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
if (!res) {
- DSSDBG("can't get PHY mem resource by name\n");
- /*
- * if hwmod/DT doesn't have the memory resource information
- * split into HDMI sub blocks by name, we try again by getting
- * the platform's first resource. this code will be removed when
- * the driver can get the mem resources by name
- */
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- DSSERR("can't get PHY mem resource\n");
- return -EINVAL;
- }
-
- temp_res.start = res->start + PHY_OFFSET;
- temp_res.end = temp_res.start + PHY_SIZE - 1;
- res = &temp_res;
+ DSSERR("can't get PHY mem resource\n");
+ return -EINVAL;
}
- phy->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
- if (!phy->base) {
+ phy->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(phy->base)) {
DSSERR("can't ioremap TX PHY\n");
- return -ENOMEM;
- }
-
- phy->irq = platform_get_irq(pdev, 0);
- if (phy->irq < 0) {
- DSSERR("platform_get_irq failed\n");
- return -ENODEV;
+ return PTR_ERR(phy->base);
}
return 0;