summaryrefslogtreecommitdiffstats
path: root/drivers/media/platform/renesas/rcar-csi2.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/platform/renesas/rcar-csi2.c')
-rw-r--r--drivers/media/platform/renesas/rcar-csi2.c599
1 files changed, 491 insertions, 108 deletions
diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
index c419ddb4c5a2..0a53dd47d7bf 100644
--- a/drivers/media/platform/renesas/rcar-csi2.c
+++ b/drivers/media/platform/renesas/rcar-csi2.c
@@ -135,13 +135,23 @@ struct rcar_csi2;
/* V4H BASE registers */
#define V4H_N_LANES_REG 0x0004
#define V4H_CSI2_RESETN_REG 0x0008
+
#define V4H_PHY_MODE_REG 0x001c
+#define V4H_PHY_MODE_DPHY 0
+#define V4H_PHY_MODE_CPHY 1
+
#define V4H_PHY_SHUTDOWNZ_REG 0x0040
#define V4H_DPHY_RSTZ_REG 0x0044
#define V4H_FLDC_REG 0x0804
#define V4H_FLDD_REG 0x0808
#define V4H_IDIC_REG 0x0810
+
#define V4H_PHY_EN_REG 0x2000
+#define V4H_PHY_EN_ENABLE_3 BIT(7)
+#define V4H_PHY_EN_ENABLE_2 BIT(6)
+#define V4H_PHY_EN_ENABLE_1 BIT(5)
+#define V4H_PHY_EN_ENABLE_0 BIT(4)
+#define V4H_PHY_EN_ENABLE_CLK BIT(0)
#define V4H_ST_PHYST_REG 0x2814
#define V4H_ST_PHYST_ST_PHY_READY BIT(31)
@@ -173,17 +183,19 @@ struct rcar_csi2;
#define V4H_CORE_DIG_IOCTRL_RW_AFE_CB_CTRL_2_REG(n) (0x23840 + ((n) * 2)) /* n = 0 - 11 */
#define V4H_CORE_DIG_RW_COMMON_REG(n) (0x23880 + ((n) * 2)) /* n = 0 - 15 */
#define V4H_CORE_DIG_ANACTRL_RW_COMMON_ANACTRL_REG(n) (0x239e0 + ((n) * 2)) /* n = 0 - 3 */
-#define V4H_CORE_DIG_CLANE_1_RW_CFG_0_REG 0x2a400
#define V4H_CORE_DIG_CLANE_1_RW_HS_TX_6_REG 0x2a60c
/* V4H C-PHY */
#define V4H_CORE_DIG_RW_TRIO0_REG(n) (0x22100 + ((n) * 2)) /* n = 0 - 3 */
#define V4H_CORE_DIG_RW_TRIO1_REG(n) (0x22500 + ((n) * 2)) /* n = 0 - 3 */
#define V4H_CORE_DIG_RW_TRIO2_REG(n) (0x22900 + ((n) * 2)) /* n = 0 - 3 */
+#define V4H_CORE_DIG_CLANE_0_RW_CFG_0_REG 0x2a000
#define V4H_CORE_DIG_CLANE_0_RW_LP_0_REG 0x2a080
#define V4H_CORE_DIG_CLANE_0_RW_HS_RX_REG(n) (0x2a100 + ((n) * 2)) /* n = 0 - 6 */
+#define V4H_CORE_DIG_CLANE_1_RW_CFG_0_REG 0x2a400
#define V4H_CORE_DIG_CLANE_1_RW_LP_0_REG 0x2a480
#define V4H_CORE_DIG_CLANE_1_RW_HS_RX_REG(n) (0x2a500 + ((n) * 2)) /* n = 0 - 6 */
+#define V4H_CORE_DIG_CLANE_2_RW_CFG_0_REG 0x2a800
#define V4H_CORE_DIG_CLANE_2_RW_LP_0_REG 0x2a880
#define V4H_CORE_DIG_CLANE_2_RW_HS_RX_REG(n) (0x2a900 + ((n) * 2)) /* n = 0 - 6 */
@@ -237,17 +249,37 @@ static const struct rcsi2_cphy_setting cphy_setting_table_r8a779g0[] = {
{ /* sentinel */ },
};
+/* V4M registers */
+#define V4M_OVR1_REG 0x0848
+#define V4M_OVR1_FORCERXMODE_3 BIT(12)
+#define V4M_OVR1_FORCERXMODE_2 BIT(11)
+#define V4M_OVR1_FORCERXMODE_1 BIT(10)
+#define V4M_OVR1_FORCERXMODE_0 BIT(9)
+
+#define V4M_FRXM_REG 0x2004
+#define V4M_FRXM_FORCERXMODE_3 BIT(3)
+#define V4M_FRXM_FORCERXMODE_2 BIT(2)
+#define V4M_FRXM_FORCERXMODE_1 BIT(1)
+#define V4M_FRXM_FORCERXMODE_0 BIT(0)
+
+#define V4M_PHYPLL_REG 0x02050
+#define V4M_CSI0CLKFCPR_REG 0x02054
+#define V4M_PHTW_REG 0x02060
+#define V4M_PHTR_REG 0x02064
+#define V4M_PHTC_REG 0x02068
+
struct phtw_value {
- u16 data;
- u16 code;
+ u8 data;
+ u8 code;
};
-struct rcsi2_mbps_reg {
+struct rcsi2_mbps_info {
u16 mbps;
- u16 reg;
+ u8 reg;
+ u16 osc_freq; /* V4M */
};
-static const struct rcsi2_mbps_reg phtw_mbps_v3u[] = {
+static const struct rcsi2_mbps_info phtw_mbps_v3u[] = {
{ .mbps = 1500, .reg = 0xcc },
{ .mbps = 1550, .reg = 0x1d },
{ .mbps = 1600, .reg = 0x27 },
@@ -272,7 +304,7 @@ static const struct rcsi2_mbps_reg phtw_mbps_v3u[] = {
{ /* sentinel */ },
};
-static const struct rcsi2_mbps_reg phtw_mbps_h3_v3h_m3n[] = {
+static const struct rcsi2_mbps_info phtw_mbps_h3_v3h_m3n[] = {
{ .mbps = 80, .reg = 0x86 },
{ .mbps = 90, .reg = 0x86 },
{ .mbps = 100, .reg = 0x87 },
@@ -292,7 +324,7 @@ static const struct rcsi2_mbps_reg phtw_mbps_h3_v3h_m3n[] = {
{ /* sentinel */ },
};
-static const struct rcsi2_mbps_reg phtw_mbps_v3m_e3[] = {
+static const struct rcsi2_mbps_info phtw_mbps_v3m_e3[] = {
{ .mbps = 80, .reg = 0x00 },
{ .mbps = 90, .reg = 0x20 },
{ .mbps = 100, .reg = 0x40 },
@@ -336,7 +368,7 @@ static const struct rcsi2_mbps_reg phtw_mbps_v3m_e3[] = {
#define PHYPLL_REG 0x68
#define PHYPLL_HSFREQRANGE(n) ((n) << 16)
-static const struct rcsi2_mbps_reg hsfreqrange_v3u[] = {
+static const struct rcsi2_mbps_info hsfreqrange_v3u[] = {
{ .mbps = 80, .reg = 0x00 },
{ .mbps = 90, .reg = 0x10 },
{ .mbps = 100, .reg = 0x20 },
@@ -402,7 +434,7 @@ static const struct rcsi2_mbps_reg hsfreqrange_v3u[] = {
{ /* sentinel */ },
};
-static const struct rcsi2_mbps_reg hsfreqrange_h3_v3h_m3n[] = {
+static const struct rcsi2_mbps_info hsfreqrange_h3_v3h_m3n[] = {
{ .mbps = 80, .reg = 0x00 },
{ .mbps = 90, .reg = 0x10 },
{ .mbps = 100, .reg = 0x20 },
@@ -449,7 +481,7 @@ static const struct rcsi2_mbps_reg hsfreqrange_h3_v3h_m3n[] = {
{ /* sentinel */ },
};
-static const struct rcsi2_mbps_reg hsfreqrange_m3w[] = {
+static const struct rcsi2_mbps_info hsfreqrange_m3w[] = {
{ .mbps = 80, .reg = 0x00 },
{ .mbps = 90, .reg = 0x10 },
{ .mbps = 100, .reg = 0x20 },
@@ -496,6 +528,73 @@ static const struct rcsi2_mbps_reg hsfreqrange_m3w[] = {
{ /* sentinel */ },
};
+static const struct rcsi2_mbps_info hsfreqrange_v4m[] = {
+ { .mbps = 80, .reg = 0x00, .osc_freq = 0x01a9 },
+ { .mbps = 90, .reg = 0x10, .osc_freq = 0x01a9 },
+ { .mbps = 100, .reg = 0x20, .osc_freq = 0x01a9 },
+ { .mbps = 110, .reg = 0x30, .osc_freq = 0x01a9 },
+ { .mbps = 120, .reg = 0x01, .osc_freq = 0x01a9 },
+ { .mbps = 130, .reg = 0x11, .osc_freq = 0x01a9 },
+ { .mbps = 140, .reg = 0x21, .osc_freq = 0x01a9 },
+ { .mbps = 150, .reg = 0x31, .osc_freq = 0x01a9 },
+ { .mbps = 160, .reg = 0x02, .osc_freq = 0x01a9 },
+ { .mbps = 170, .reg = 0x12, .osc_freq = 0x01a9 },
+ { .mbps = 180, .reg = 0x22, .osc_freq = 0x01a9 },
+ { .mbps = 190, .reg = 0x32, .osc_freq = 0x01a9 },
+ { .mbps = 205, .reg = 0x03, .osc_freq = 0x01a9 },
+ { .mbps = 220, .reg = 0x13, .osc_freq = 0x01a9 },
+ { .mbps = 235, .reg = 0x23, .osc_freq = 0x01a9 },
+ { .mbps = 250, .reg = 0x33, .osc_freq = 0x01a9 },
+ { .mbps = 275, .reg = 0x04, .osc_freq = 0x01a9 },
+ { .mbps = 300, .reg = 0x14, .osc_freq = 0x01a9 },
+ { .mbps = 325, .reg = 0x25, .osc_freq = 0x01a9 },
+ { .mbps = 350, .reg = 0x35, .osc_freq = 0x01a9 },
+ { .mbps = 400, .reg = 0x05, .osc_freq = 0x01a9 },
+ { .mbps = 450, .reg = 0x16, .osc_freq = 0x01a9 },
+ { .mbps = 500, .reg = 0x26, .osc_freq = 0x01a9 },
+ { .mbps = 550, .reg = 0x37, .osc_freq = 0x01a9 },
+ { .mbps = 600, .reg = 0x07, .osc_freq = 0x01a9 },
+ { .mbps = 650, .reg = 0x18, .osc_freq = 0x01a9 },
+ { .mbps = 700, .reg = 0x28, .osc_freq = 0x01a9 },
+ { .mbps = 750, .reg = 0x39, .osc_freq = 0x01a9 },
+ { .mbps = 800, .reg = 0x09, .osc_freq = 0x01a9 },
+ { .mbps = 850, .reg = 0x19, .osc_freq = 0x01a9 },
+ { .mbps = 900, .reg = 0x29, .osc_freq = 0x01a9 },
+ { .mbps = 950, .reg = 0x3a, .osc_freq = 0x01a9 },
+ { .mbps = 1000, .reg = 0x0a, .osc_freq = 0x01a9 },
+ { .mbps = 1050, .reg = 0x1a, .osc_freq = 0x01a9 },
+ { .mbps = 1100, .reg = 0x2a, .osc_freq = 0x01a9 },
+ { .mbps = 1150, .reg = 0x3b, .osc_freq = 0x01a9 },
+ { .mbps = 1200, .reg = 0x0b, .osc_freq = 0x01a9 },
+ { .mbps = 1250, .reg = 0x1b, .osc_freq = 0x01a9 },
+ { .mbps = 1300, .reg = 0x2b, .osc_freq = 0x01a9 },
+ { .mbps = 1350, .reg = 0x3c, .osc_freq = 0x01a9 },
+ { .mbps = 1400, .reg = 0x0c, .osc_freq = 0x01a9 },
+ { .mbps = 1450, .reg = 0x1c, .osc_freq = 0x01a9 },
+ { .mbps = 1500, .reg = 0x2c, .osc_freq = 0x01a9 },
+ { .mbps = 1550, .reg = 0x3d, .osc_freq = 0x0108 },
+ { .mbps = 1600, .reg = 0x0d, .osc_freq = 0x0110 },
+ { .mbps = 1650, .reg = 0x1d, .osc_freq = 0x0119 },
+ { .mbps = 1700, .reg = 0x2e, .osc_freq = 0x0121 },
+ { .mbps = 1750, .reg = 0x3e, .osc_freq = 0x012a },
+ { .mbps = 1800, .reg = 0x0e, .osc_freq = 0x0132 },
+ { .mbps = 1850, .reg = 0x1e, .osc_freq = 0x013b },
+ { .mbps = 1900, .reg = 0x2f, .osc_freq = 0x0143 },
+ { .mbps = 1950, .reg = 0x3f, .osc_freq = 0x014c },
+ { .mbps = 2000, .reg = 0x0f, .osc_freq = 0x0154 },
+ { .mbps = 2050, .reg = 0x40, .osc_freq = 0x015d },
+ { .mbps = 2100, .reg = 0x41, .osc_freq = 0x0165 },
+ { .mbps = 2150, .reg = 0x42, .osc_freq = 0x016e },
+ { .mbps = 2200, .reg = 0x43, .osc_freq = 0x0176 },
+ { .mbps = 2250, .reg = 0x44, .osc_freq = 0x017f },
+ { .mbps = 2300, .reg = 0x45, .osc_freq = 0x0187 },
+ { .mbps = 2350, .reg = 0x46, .osc_freq = 0x0190 },
+ { .mbps = 2400, .reg = 0x47, .osc_freq = 0x0198 },
+ { .mbps = 2450, .reg = 0x48, .osc_freq = 0x01a1 },
+ { .mbps = 2500, .reg = 0x49, .osc_freq = 0x01a9 },
+ { /* sentinel */ },
+};
+
/* PHY ESC Error Monitor */
#define PHEERM_REG 0x74
@@ -575,6 +674,21 @@ static const struct rcar_csi2_format *rcsi2_code_to_fmt(unsigned int code)
return NULL;
}
+struct rcsi2_cphy_line_order {
+ enum v4l2_mbus_csi2_cphy_line_orders_type order;
+ u16 cfg;
+ u16 ctrl29;
+};
+
+static const struct rcsi2_cphy_line_order rcsi2_cphy_line_orders[] = {
+ { .order = V4L2_MBUS_CSI2_CPHY_LINE_ORDER_ABC, .cfg = 0x0, .ctrl29 = 0x0 },
+ { .order = V4L2_MBUS_CSI2_CPHY_LINE_ORDER_ACB, .cfg = 0xa, .ctrl29 = 0x1 },
+ { .order = V4L2_MBUS_CSI2_CPHY_LINE_ORDER_BAC, .cfg = 0xc, .ctrl29 = 0x1 },
+ { .order = V4L2_MBUS_CSI2_CPHY_LINE_ORDER_BCA, .cfg = 0x5, .ctrl29 = 0x0 },
+ { .order = V4L2_MBUS_CSI2_CPHY_LINE_ORDER_CAB, .cfg = 0x3, .ctrl29 = 0x0 },
+ { .order = V4L2_MBUS_CSI2_CPHY_LINE_ORDER_CBA, .cfg = 0x9, .ctrl29 = 0x1 }
+};
+
enum rcar_csi2_pads {
RCAR_CSI2_SINK,
RCAR_CSI2_SOURCE_VC0,
@@ -584,13 +698,19 @@ enum rcar_csi2_pads {
NR_OF_RCAR_CSI2_PAD,
};
+struct rcsi2_register_layout {
+ unsigned int phtw;
+ unsigned int phypll;
+};
+
struct rcar_csi2_info {
+ const struct rcsi2_register_layout *regs;
int (*init_phtw)(struct rcar_csi2 *priv, unsigned int mbps);
int (*phy_post_init)(struct rcar_csi2 *priv);
int (*start_receiver)(struct rcar_csi2 *priv,
struct v4l2_subdev_state *state);
void (*enter_standby)(struct rcar_csi2 *priv);
- const struct rcsi2_mbps_reg *hsfreqrange;
+ const struct rcsi2_mbps_info *hsfreqrange;
unsigned int csi0clkfreqrange;
unsigned int num_channels;
bool clear_ulps;
@@ -619,6 +739,7 @@ struct rcar_csi2 {
bool cphy;
unsigned short lanes;
unsigned char lane_swap[4];
+ enum v4l2_mbus_csi2_cphy_line_orders_type line_orders[3];
};
static inline struct rcar_csi2 *sd_to_csi2(struct v4l2_subdev *sd)
@@ -651,11 +772,88 @@ static void rcsi2_write(struct rcar_csi2 *priv, unsigned int reg, u32 data)
iowrite32(data, priv->base + reg);
}
+static u16 rcsi2_read16(struct rcar_csi2 *priv, unsigned int reg)
+{
+ return ioread16(priv->base + reg);
+}
+
static void rcsi2_write16(struct rcar_csi2 *priv, unsigned int reg, u16 data)
{
iowrite16(data, priv->base + reg);
}
+static void rcsi2_modify16(struct rcar_csi2 *priv, unsigned int reg, u16 data, u16 mask)
+{
+ u16 val;
+
+ val = rcsi2_read16(priv, reg) & ~mask;
+ rcsi2_write16(priv, reg, val | data);
+}
+
+static int rcsi2_phtw_write(struct rcar_csi2 *priv, u8 data, u8 code)
+{
+ unsigned int timeout;
+
+ rcsi2_write(priv, priv->info->regs->phtw,
+ PHTW_DWEN | PHTW_TESTDIN_DATA(data) |
+ PHTW_CWEN | PHTW_TESTDIN_CODE(code));
+
+ /* Wait for DWEN and CWEN to be cleared by hardware. */
+ for (timeout = 0; timeout <= 20; timeout++) {
+ if (!(rcsi2_read(priv, priv->info->regs->phtw) & (PHTW_DWEN | PHTW_CWEN)))
+ return 0;
+
+ usleep_range(1000, 2000);
+ }
+
+ dev_err(priv->dev, "Timeout waiting for PHTW_DWEN and/or PHTW_CWEN\n");
+
+ return -ETIMEDOUT;
+}
+
+static int rcsi2_phtw_write_array(struct rcar_csi2 *priv,
+ const struct phtw_value *values,
+ unsigned int size)
+{
+ int ret;
+
+ for (unsigned int i = 0; i < size; i++) {
+ ret = rcsi2_phtw_write(priv, values[i].data, values[i].code);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct rcsi2_mbps_info *
+rcsi2_mbps_to_info(struct rcar_csi2 *priv,
+ const struct rcsi2_mbps_info *infotable, unsigned int mbps)
+{
+ const struct rcsi2_mbps_info *info;
+ const struct rcsi2_mbps_info *prev = NULL;
+
+ if (mbps < infotable->mbps)
+ dev_warn(priv->dev, "%u Mbps less than min PHY speed %u Mbps",
+ mbps, infotable->mbps);
+
+ for (info = infotable; info->mbps != 0; info++) {
+ if (info->mbps >= mbps)
+ break;
+ prev = info;
+ }
+
+ if (!info->mbps) {
+ dev_err(priv->dev, "Unsupported PHY speed (%u Mbps)", mbps);
+ return NULL;
+ }
+
+ if (prev && ((mbps - prev->mbps) <= (info->mbps - mbps)))
+ info = prev;
+
+ return info;
+}
+
static void rcsi2_enter_standby_gen3(struct rcar_csi2 *priv)
{
rcsi2_write(priv, PHYCNT_REG, 0);
@@ -708,29 +906,13 @@ static int rcsi2_wait_phy_start(struct rcar_csi2 *priv,
static int rcsi2_set_phypll(struct rcar_csi2 *priv, unsigned int mbps)
{
- const struct rcsi2_mbps_reg *hsfreq;
- const struct rcsi2_mbps_reg *hsfreq_prev = NULL;
-
- if (mbps < priv->info->hsfreqrange->mbps)
- dev_warn(priv->dev, "%u Mbps less than min PHY speed %u Mbps",
- mbps, priv->info->hsfreqrange->mbps);
-
- for (hsfreq = priv->info->hsfreqrange; hsfreq->mbps != 0; hsfreq++) {
- if (hsfreq->mbps >= mbps)
- break;
- hsfreq_prev = hsfreq;
- }
+ const struct rcsi2_mbps_info *info;
- if (!hsfreq->mbps) {
- dev_err(priv->dev, "Unsupported PHY speed (%u Mbps)", mbps);
+ info = rcsi2_mbps_to_info(priv, priv->info->hsfreqrange, mbps);
+ if (!info)
return -ERANGE;
- }
- if (hsfreq_prev &&
- ((mbps - hsfreq_prev->mbps) <= (hsfreq->mbps - mbps)))
- hsfreq = hsfreq_prev;
-
- rcsi2_write(priv, PHYPLL_REG, PHYPLL_HSFREQRANGE(hsfreq->reg));
+ rcsi2_write(priv, priv->info->regs->phypll, PHYPLL_HSFREQRANGE(info->reg));
return 0;
}
@@ -961,6 +1143,26 @@ static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
return 0;
}
+static void rsci2_set_line_order(struct rcar_csi2 *priv,
+ enum v4l2_mbus_csi2_cphy_line_orders_type order,
+ unsigned int cfgreg, unsigned int ctrlreg)
+{
+ const struct rcsi2_cphy_line_order *info = NULL;
+
+ for (unsigned int i = 0; i < ARRAY_SIZE(rcsi2_cphy_line_orders); i++) {
+ if (rcsi2_cphy_line_orders[i].order == order) {
+ info = &rcsi2_cphy_line_orders[i];
+ break;
+ }
+ }
+
+ if (!info)
+ return;
+
+ rcsi2_modify16(priv, cfgreg, info->cfg, 0x000f);
+ rcsi2_modify16(priv, ctrlreg, info->ctrl29, 0x0100);
+}
+
static int rcsi2_wait_phy_start_v4h(struct rcar_csi2 *priv, u32 match)
{
unsigned int timeout;
@@ -1038,12 +1240,18 @@ static int rcsi2_c_phy_setting_v4h(struct rcar_csi2 *priv, int msps)
rcsi2_write16(priv, V4H_CORE_DIG_RW_TRIO1_REG(1), conf->trio1);
rcsi2_write16(priv, V4H_CORE_DIG_RW_TRIO2_REG(1), conf->trio1);
- /*
- * Configure pin-swap.
- * TODO: This registers is not documented yet, the values should depend
- * on the 'clock-lanes' and 'data-lanes' devicetree properties.
- */
- rcsi2_write16(priv, V4H_CORE_DIG_CLANE_1_RW_CFG_0_REG, 0xf5);
+ /* Configure data line order. */
+ rsci2_set_line_order(priv, priv->line_orders[0],
+ V4H_CORE_DIG_CLANE_0_RW_CFG_0_REG,
+ V4H_CORE_DIG_IOCTRL_RW_AFE_LANE0_CTRL_2_REG(9));
+ rsci2_set_line_order(priv, priv->line_orders[1],
+ V4H_CORE_DIG_CLANE_1_RW_CFG_0_REG,
+ V4H_CORE_DIG_IOCTRL_RW_AFE_LANE1_CTRL_2_REG(9));
+ rsci2_set_line_order(priv, priv->line_orders[2],
+ V4H_CORE_DIG_CLANE_2_RW_CFG_0_REG,
+ V4H_CORE_DIG_IOCTRL_RW_AFE_LANE2_CTRL_2_REG(9));
+
+ /* TODO: This registers is not documented. */
rcsi2_write16(priv, V4H_CORE_DIG_CLANE_1_RW_HS_TX_6_REG, 0x5000);
/* Leave Shutdown mode */
@@ -1092,11 +1300,11 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv,
rcsi2_write(priv, V4H_PHY_SHUTDOWNZ_REG, 0);
/* PHY static setting */
- rcsi2_write(priv, V4H_PHY_EN_REG, BIT(0));
+ rcsi2_write(priv, V4H_PHY_EN_REG, V4H_PHY_EN_ENABLE_CLK);
rcsi2_write(priv, V4H_FLDC_REG, 0);
rcsi2_write(priv, V4H_FLDD_REG, 0);
rcsi2_write(priv, V4H_IDIC_REG, 0);
- rcsi2_write(priv, V4H_PHY_MODE_REG, BIT(0));
+ rcsi2_write(priv, V4H_PHY_MODE_REG, V4H_PHY_MODE_CPHY);
rcsi2_write(priv, V4H_N_LANES_REG, lanes - 1);
/* Reset CSI2 */
@@ -1131,6 +1339,200 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv,
return 0;
}
+static int rcsi2_d_phy_setting_v4m(struct rcar_csi2 *priv, int data_rate)
+{
+ unsigned int timeout;
+ int ret;
+
+ static const struct phtw_value step1[] = {
+ { .data = 0x00, .code = 0x00 },
+ { .data = 0x00, .code = 0x1e },
+ };
+
+ /* Shutdown and reset PHY. */
+ rcsi2_write(priv, V4H_DPHY_RSTZ_REG, BIT(0));
+ rcsi2_write(priv, V4H_PHY_SHUTDOWNZ_REG, BIT(0));
+
+ /* Start internal calibration (POR). */
+ ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1));
+ if (ret)
+ return ret;
+
+ /* Wait for POR to complete. */
+ for (timeout = 10; timeout > 0; timeout--) {
+ if ((rcsi2_read(priv, V4M_PHTR_REG) & 0xf0000) == 0x70000)
+ break;
+ usleep_range(1000, 2000);
+ }
+
+ if (!timeout) {
+ dev_err(priv->dev, "D-PHY calibration failed\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static int rcsi2_set_osc_freq(struct rcar_csi2 *priv, unsigned int mbps)
+{
+ const struct rcsi2_mbps_info *info;
+ struct phtw_value steps[] = {
+ { .data = 0x00, .code = 0x00 },
+ { .code = 0xe2 }, /* Data filled in below. */
+ { .code = 0xe3 }, /* Data filled in below. */
+ { .data = 0x01, .code = 0xe4 },
+ };
+
+ info = rcsi2_mbps_to_info(priv, priv->info->hsfreqrange, mbps);
+ if (!info)
+ return -ERANGE;
+
+ /* Fill in data for command. */
+ steps[1].data = (info->osc_freq & 0x00ff) >> 0;
+ steps[2].data = (info->osc_freq & 0x0f00) >> 8;
+
+ return rcsi2_phtw_write_array(priv, steps, ARRAY_SIZE(steps));
+}
+
+static int rcsi2_init_common_v4m(struct rcar_csi2 *priv, unsigned int mbps)
+{
+ int ret;
+
+ static const struct phtw_value step1[] = {
+ { .data = 0x00, .code = 0x00 },
+ { .data = 0x3c, .code = 0x08 },
+ };
+
+ static const struct phtw_value step2[] = {
+ { .data = 0x00, .code = 0x00 },
+ { .data = 0x80, .code = 0xe0 },
+ { .data = 0x31, .code = 0xe1 },
+ { .data = 0x06, .code = 0x00 },
+ { .data = 0x11, .code = 0x11 },
+ { .data = 0x08, .code = 0x00 },
+ { .data = 0x11, .code = 0x11 },
+ { .data = 0x0a, .code = 0x00 },
+ { .data = 0x11, .code = 0x11 },
+ { .data = 0x0c, .code = 0x00 },
+ { .data = 0x11, .code = 0x11 },
+ { .data = 0x01, .code = 0x00 },
+ { .data = 0x31, .code = 0xaa },
+ { .data = 0x05, .code = 0x00 },
+ { .data = 0x05, .code = 0x09 },
+ { .data = 0x07, .code = 0x00 },
+ { .data = 0x05, .code = 0x09 },
+ { .data = 0x09, .code = 0x00 },
+ { .data = 0x05, .code = 0x09 },
+ { .data = 0x0b, .code = 0x00 },
+ { .data = 0x05, .code = 0x09 },
+ };
+
+ static const struct phtw_value step3[] = {
+ { .data = 0x01, .code = 0x00 },
+ { .data = 0x06, .code = 0xab },
+ };
+
+ if (priv->info->hsfreqrange) {
+ ret = rcsi2_set_phypll(priv, mbps);
+ if (ret)
+ return ret;
+
+ ret = rcsi2_set_osc_freq(priv, mbps);
+ if (ret)
+ return ret;
+ }
+
+ if (mbps <= 1500) {
+ ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1));
+ if (ret)
+ return ret;
+ }
+
+ if (priv->info->csi0clkfreqrange)
+ rcsi2_write(priv, V4M_CSI0CLKFCPR_REG,
+ CSI0CLKFREQRANGE(priv->info->csi0clkfreqrange));
+
+ rcsi2_write(priv, V4H_PHY_EN_REG, V4H_PHY_EN_ENABLE_CLK |
+ V4H_PHY_EN_ENABLE_0 | V4H_PHY_EN_ENABLE_1 |
+ V4H_PHY_EN_ENABLE_2 | V4H_PHY_EN_ENABLE_3);
+
+ if (mbps > 1500) {
+ ret = rcsi2_phtw_write_array(priv, step2, ARRAY_SIZE(step2));
+ if (ret)
+ return ret;
+ }
+
+ return rcsi2_phtw_write_array(priv, step3, ARRAY_SIZE(step3));
+}
+
+static int rcsi2_start_receiver_v4m(struct rcar_csi2 *priv,
+ struct v4l2_subdev_state *state)
+{
+ const struct rcar_csi2_format *format;
+ const struct v4l2_mbus_framefmt *fmt;
+ unsigned int lanes;
+ int mbps;
+ int ret;
+
+ /* Calculate parameters */
+ fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
+ format = rcsi2_code_to_fmt(fmt->code);
+ if (!format)
+ return -EINVAL;
+
+ ret = rcsi2_get_active_lanes(priv, &lanes);
+ if (ret)
+ return ret;
+
+ mbps = rcsi2_calc_mbps(priv, format->bpp, lanes);
+ if (mbps < 0)
+ return mbps;
+
+ /* Reset LINK and PHY */
+ rcsi2_write(priv, V4H_CSI2_RESETN_REG, 0);
+ rcsi2_write(priv, V4H_DPHY_RSTZ_REG, 0);
+ rcsi2_write(priv, V4H_PHY_SHUTDOWNZ_REG, 0);
+ rcsi2_write(priv, V4M_PHTC_REG, PHTC_TESTCLR);
+
+ /* PHY static setting */
+ rcsi2_write(priv, V4H_PHY_EN_REG, V4H_PHY_EN_ENABLE_CLK);
+ rcsi2_write(priv, V4H_FLDC_REG, 0);
+ rcsi2_write(priv, V4H_FLDD_REG, 0);
+ rcsi2_write(priv, V4H_IDIC_REG, 0);
+ rcsi2_write(priv, V4H_PHY_MODE_REG, V4H_PHY_MODE_DPHY);
+ rcsi2_write(priv, V4H_N_LANES_REG, lanes - 1);
+
+ rcsi2_write(priv, V4M_FRXM_REG,
+ V4M_FRXM_FORCERXMODE_0 | V4M_FRXM_FORCERXMODE_1 |
+ V4M_FRXM_FORCERXMODE_2 | V4M_FRXM_FORCERXMODE_3);
+ rcsi2_write(priv, V4M_OVR1_REG,
+ V4M_OVR1_FORCERXMODE_0 | V4M_OVR1_FORCERXMODE_1 |
+ V4M_OVR1_FORCERXMODE_2 | V4M_OVR1_FORCERXMODE_3);
+
+ /* Reset CSI2 */
+ rcsi2_write(priv, V4M_PHTC_REG, 0);
+ rcsi2_write(priv, V4H_CSI2_RESETN_REG, BIT(0));
+
+ /* Common settings */
+ ret = rcsi2_init_common_v4m(priv, mbps);
+ if (ret)
+ return ret;
+
+ /* D-PHY settings */
+ ret = rcsi2_d_phy_setting_v4m(priv, mbps);
+ if (ret)
+ return ret;
+
+ rcsi2_wait_phy_start_v4h(priv, V4H_ST_PHYST_ST_STOPSTATE_0 |
+ V4H_ST_PHYST_ST_STOPSTATE_1 |
+ V4H_ST_PHYST_ST_STOPSTATE_2 |
+ V4H_ST_PHYST_ST_STOPSTATE_3);
+
+ rcsi2_write(priv, V4M_FRXM_REG, 0);
+
+ return 0;
+}
+
static int rcsi2_start(struct rcar_csi2 *priv, struct v4l2_subdev_state *state)
{
int ret;
@@ -1392,6 +1794,9 @@ static int rcsi2_parse_v4l2(struct rcar_csi2 *priv,
}
}
+ for (i = 0; i < ARRAY_SIZE(priv->line_orders); i++)
+ priv->line_orders[i] = vep->bus.mipi_csi2.line_orders[i];
+
return 0;
}
@@ -1451,64 +1856,16 @@ static int rcsi2_parse_dt(struct rcar_csi2 *priv)
* NOTE: Magic values are from the datasheet and lack documentation.
*/
-static int rcsi2_phtw_write(struct rcar_csi2 *priv, u16 data, u16 code)
-{
- unsigned int timeout;
-
- rcsi2_write(priv, PHTW_REG,
- PHTW_DWEN | PHTW_TESTDIN_DATA(data) |
- PHTW_CWEN | PHTW_TESTDIN_CODE(code));
-
- /* Wait for DWEN and CWEN to be cleared by hardware. */
- for (timeout = 0; timeout <= 20; timeout++) {
- if (!(rcsi2_read(priv, PHTW_REG) & (PHTW_DWEN | PHTW_CWEN)))
- return 0;
-
- usleep_range(1000, 2000);
- }
-
- dev_err(priv->dev, "Timeout waiting for PHTW_DWEN and/or PHTW_CWEN\n");
-
- return -ETIMEDOUT;
-}
-
-static int rcsi2_phtw_write_array(struct rcar_csi2 *priv,
- const struct phtw_value *values)
-{
- const struct phtw_value *value;
- int ret;
-
- for (value = values; value->data || value->code; value++) {
- ret = rcsi2_phtw_write(priv, value->data, value->code);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
static int rcsi2_phtw_write_mbps(struct rcar_csi2 *priv, unsigned int mbps,
- const struct rcsi2_mbps_reg *values, u16 code)
+ const struct rcsi2_mbps_info *values, u8 code)
{
- const struct rcsi2_mbps_reg *value;
- const struct rcsi2_mbps_reg *prev_value = NULL;
-
- for (value = values; value->mbps; value++) {
- if (value->mbps >= mbps)
- break;
- prev_value = value;
- }
+ const struct rcsi2_mbps_info *info;
- if (prev_value &&
- ((mbps - prev_value->mbps) <= (value->mbps - mbps)))
- value = prev_value;
-
- if (!value->mbps) {
- dev_err(priv->dev, "Unsupported PHY speed (%u Mbps)", mbps);
+ info = rcsi2_mbps_to_info(priv, values, mbps);
+ if (!info)
return -ERANGE;
- }
- return rcsi2_phtw_write(priv, value->reg, code);
+ return rcsi2_phtw_write(priv, info->reg, code);
}
static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv,
@@ -1520,7 +1877,6 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv,
{ .data = 0x11, .code = 0xe4 },
{ .data = 0x01, .code = 0xe5 },
{ .data = 0x10, .code = 0x04 },
- { /* sentinel */ },
};
static const struct phtw_value step2[] = {
@@ -1529,12 +1885,11 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv,
{ .data = 0x4b, .code = 0xac },
{ .data = 0x03, .code = 0x00 },
{ .data = 0x80, .code = 0x07 },
- { /* sentinel */ },
};
int ret;
- ret = rcsi2_phtw_write_array(priv, step1);
+ ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1));
if (ret)
return ret;
@@ -1549,7 +1904,7 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv,
return ret;
}
- return rcsi2_phtw_write_array(priv, step2);
+ return rcsi2_phtw_write_array(priv, step2, ARRAY_SIZE(step2));
}
static int rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, unsigned int mbps)
@@ -1575,10 +1930,9 @@ static int rcsi2_phy_post_init_v3m_e3(struct rcar_csi2 *priv)
{ .data = 0xee, .code = 0x54 },
{ .data = 0xee, .code = 0x84 },
{ .data = 0xee, .code = 0x94 },
- { /* sentinel */ },
};
- return rcsi2_phtw_write_array(priv, step1);
+ return rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1));
}
static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv,
@@ -1587,20 +1941,17 @@ static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv,
/* In case of 1500Mbps or less */
static const struct phtw_value step1[] = {
{ .data = 0xcc, .code = 0xe2 },
- { /* sentinel */ },
};
static const struct phtw_value step2[] = {
{ .data = 0x01, .code = 0xe3 },
{ .data = 0x11, .code = 0xe4 },
{ .data = 0x01, .code = 0xe5 },
- { /* sentinel */ },
};
/* In case of 1500Mbps or less */
static const struct phtw_value step3[] = {
{ .data = 0x38, .code = 0x08 },
- { /* sentinel */ },
};
static const struct phtw_value step4[] = {
@@ -1608,29 +1959,28 @@ static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv,
{ .data = 0x4b, .code = 0xac },
{ .data = 0x03, .code = 0x00 },
{ .data = 0x80, .code = 0x07 },
- { /* sentinel */ },
};
int ret;
if (mbps != 0 && mbps <= 1500)
- ret = rcsi2_phtw_write_array(priv, step1);
+ ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1));
else
ret = rcsi2_phtw_write_mbps(priv, mbps, phtw_mbps_v3u, 0xe2);
if (ret)
return ret;
- ret = rcsi2_phtw_write_array(priv, step2);
+ ret = rcsi2_phtw_write_array(priv, step2, ARRAY_SIZE(step2));
if (ret)
return ret;
if (mbps != 0 && mbps <= 1500) {
- ret = rcsi2_phtw_write_array(priv, step3);
+ ret = rcsi2_phtw_write_array(priv, step3, ARRAY_SIZE(step3));
if (ret)
return ret;
}
- ret = rcsi2_phtw_write_array(priv, step4);
+ ret = rcsi2_phtw_write_array(priv, step4, ARRAY_SIZE(step4));
if (ret)
return ret;
@@ -1714,7 +2064,13 @@ static int rcsi2_probe_resources(struct rcar_csi2 *priv,
return PTR_ERR_OR_ZERO(priv->rstc);
}
+static const struct rcsi2_register_layout rcsi2_registers_gen3 = {
+ .phtw = PHTW_REG,
+ .phypll = PHYPLL_REG,
+};
+
static const struct rcar_csi2_info rcar_csi2_info_r8a7795 = {
+ .regs = &rcsi2_registers_gen3,
.init_phtw = rcsi2_init_phtw_h3_v3h_m3n,
.start_receiver = rcsi2_start_receiver_gen3,
.enter_standby = rcsi2_enter_standby_gen3,
@@ -1726,6 +2082,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a7795 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a7795es2 = {
+ .regs = &rcsi2_registers_gen3,
.init_phtw = rcsi2_init_phtw_h3es2,
.start_receiver = rcsi2_start_receiver_gen3,
.enter_standby = rcsi2_enter_standby_gen3,
@@ -1737,6 +2094,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a7795es2 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a7796 = {
+ .regs = &rcsi2_registers_gen3,
.start_receiver = rcsi2_start_receiver_gen3,
.enter_standby = rcsi2_enter_standby_gen3,
.hsfreqrange = hsfreqrange_m3w,
@@ -1745,6 +2103,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a7796 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a77961 = {
+ .regs = &rcsi2_registers_gen3,
.start_receiver = rcsi2_start_receiver_gen3,
.enter_standby = rcsi2_enter_standby_gen3,
.hsfreqrange = hsfreqrange_m3w,
@@ -1753,6 +2112,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77961 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a77965 = {
+ .regs = &rcsi2_registers_gen3,
.init_phtw = rcsi2_init_phtw_h3_v3h_m3n,
.start_receiver = rcsi2_start_receiver_gen3,
.enter_standby = rcsi2_enter_standby_gen3,
@@ -1764,6 +2124,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77965 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a77970 = {
+ .regs = &rcsi2_registers_gen3,
.init_phtw = rcsi2_init_phtw_v3m_e3,
.phy_post_init = rcsi2_phy_post_init_v3m_e3,
.start_receiver = rcsi2_start_receiver_gen3,
@@ -1773,6 +2134,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77970 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a77980 = {
+ .regs = &rcsi2_registers_gen3,
.init_phtw = rcsi2_init_phtw_h3_v3h_m3n,
.start_receiver = rcsi2_start_receiver_gen3,
.enter_standby = rcsi2_enter_standby_gen3,
@@ -1783,6 +2145,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77980 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a77990 = {
+ .regs = &rcsi2_registers_gen3,
.init_phtw = rcsi2_init_phtw_v3m_e3,
.phy_post_init = rcsi2_phy_post_init_v3m_e3,
.start_receiver = rcsi2_start_receiver_gen3,
@@ -1792,6 +2155,7 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a77990 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a779a0 = {
+ .regs = &rcsi2_registers_gen3,
.init_phtw = rcsi2_init_phtw_v3u,
.start_receiver = rcsi2_start_receiver_gen3,
.enter_standby = rcsi2_enter_standby_gen3,
@@ -1803,11 +2167,26 @@ static const struct rcar_csi2_info rcar_csi2_info_r8a779a0 = {
};
static const struct rcar_csi2_info rcar_csi2_info_r8a779g0 = {
+ .regs = &rcsi2_registers_gen3,
.start_receiver = rcsi2_start_receiver_v4h,
.use_isp = true,
.support_cphy = true,
};
+static const struct rcsi2_register_layout rcsi2_registers_v4m = {
+ .phtw = V4M_PHTW_REG,
+ .phypll = V4M_PHYPLL_REG,
+};
+
+static const struct rcar_csi2_info rcar_csi2_info_r8a779h0 = {
+ .regs = &rcsi2_registers_v4m,
+ .start_receiver = rcsi2_start_receiver_v4m,
+ .hsfreqrange = hsfreqrange_v4m,
+ .csi0clkfreqrange = 0x0c,
+ .use_isp = true,
+ .support_dphy = true,
+};
+
static const struct of_device_id rcar_csi2_of_table[] = {
{
.compatible = "renesas,r8a774a1-csi2",
@@ -1861,6 +2240,10 @@ static const struct of_device_id rcar_csi2_of_table[] = {
.compatible = "renesas,r8a779g0-csi2",
.data = &rcar_csi2_info_r8a779g0,
},
+ {
+ .compatible = "renesas,r8a779h0-csi2",
+ .data = &rcar_csi2_info_r8a779h0,
+ },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, rcar_csi2_of_table);
@@ -1974,7 +2357,7 @@ static void rcsi2_remove(struct platform_device *pdev)
}
static struct platform_driver rcar_csi2_pdrv = {
- .remove_new = rcsi2_remove,
+ .remove = rcsi2_remove,
.probe = rcsi2_probe,
.driver = {
.name = "rcar-csi2",
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-28 22:29:55 +0100