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-rw-r--r--drivers/staging/sm750fb/ddk750_chip.c622
1 files changed, 622 insertions, 0 deletions
diff --git a/drivers/staging/sm750fb/ddk750_chip.c b/drivers/staging/sm750fb/ddk750_chip.c
new file mode 100644
index 000000000000..7b28328c92f8
--- /dev/null
+++ b/drivers/staging/sm750fb/ddk750_chip.c
@@ -0,0 +1,622 @@
+#include "ddk750_help.h"
+#include "ddk750_reg.h"
+#include "ddk750_chip.h"
+#include "ddk750_power.h"
+typedef struct _pllcalparam {
+ unsigned char power;/* d : 0~ 6*/
+ unsigned char pod;
+ unsigned char od;
+ unsigned char value;/* value of 2 power d (2^d) */
+}
+pllcalparam;
+
+
+logical_chip_type_t getChipType(void)
+{
+ unsigned short physicalID;
+ char physicalRev;
+ logical_chip_type_t chip;
+
+ physicalID = devId750;//either 0x718 or 0x750
+ physicalRev = revId750;
+
+ if (physicalID == 0x718)
+ chip = SM718;
+ else if (physicalID == 0x750) {
+ chip = SM750;
+ /* SM750 and SM750LE are different in their revision ID only. */
+ if (physicalRev == SM750LE_REVISION_ID)
+ chip = SM750LE;
+ } else
+ chip = SM_UNKNOWN;
+
+ return chip;
+}
+
+
+inline unsigned int twoToPowerOfx(unsigned long x)
+{
+ unsigned long i;
+ unsigned long result = 1;
+
+ for (i = 1; i <= x; i++)
+ result *= 2;
+ return result;
+}
+
+inline unsigned int calcPLL(pll_value_t *pPLL)
+{
+ return (pPLL->inputFreq * pPLL->M / pPLL->N / twoToPowerOfx(pPLL->OD) / twoToPowerOfx(pPLL->POD));
+}
+
+unsigned int getPllValue(clock_type_t clockType, pll_value_t *pPLL)
+{
+ unsigned int ulPllReg = 0;
+
+ pPLL->inputFreq = DEFAULT_INPUT_CLOCK;
+ pPLL->clockType = clockType;
+
+ switch (clockType) {
+ case MXCLK_PLL:
+ ulPllReg = PEEK32(MXCLK_PLL_CTRL);
+ break;
+ case PRIMARY_PLL:
+ ulPllReg = PEEK32(PANEL_PLL_CTRL);
+ break;
+ case SECONDARY_PLL:
+ ulPllReg = PEEK32(CRT_PLL_CTRL);
+ break;
+ case VGA0_PLL:
+ ulPllReg = PEEK32(VGA_PLL0_CTRL);
+ break;
+ case VGA1_PLL:
+ ulPllReg = PEEK32(VGA_PLL1_CTRL);
+ break;
+ }
+
+ pPLL->M = FIELD_GET(ulPllReg, PANEL_PLL_CTRL, M);
+ pPLL->N = FIELD_GET(ulPllReg, PANEL_PLL_CTRL, N);
+ pPLL->OD = FIELD_GET(ulPllReg, PANEL_PLL_CTRL, OD);
+ pPLL->POD = FIELD_GET(ulPllReg, PANEL_PLL_CTRL, POD);
+
+ return calcPLL(pPLL);
+}
+
+
+unsigned int getChipClock(void)
+{
+ pll_value_t pll;
+#if 1
+ if (getChipType() == SM750LE)
+ return MHz(130);
+#endif
+
+ return getPllValue(MXCLK_PLL, &pll);
+}
+
+
+/*
+ * This function set up the main chip clock.
+ *
+ * Input: Frequency to be set.
+ */
+void setChipClock(unsigned int frequency)
+{
+ pll_value_t pll;
+ unsigned int ulActualMxClk;
+#if 1
+ /* Cheok_0509: For SM750LE, the chip clock is fixed. Nothing to set. */
+ if (getChipType() == SM750LE)
+ return;
+#endif
+
+ if (frequency) {
+ /*
+ * Set up PLL, a structure to hold the value to be set in clocks.
+ */
+ pll.inputFreq = DEFAULT_INPUT_CLOCK; /* Defined in CLOCK.H */
+ pll.clockType = MXCLK_PLL;
+
+ /*
+ * Call calcPllValue() to fill up the other fields for PLL structure.
+ * Sometime, the chip cannot set up the exact clock required by User.
+ * Return value from calcPllValue() gives the actual possible clock.
+ */
+ ulActualMxClk = calcPllValue(frequency, &pll);
+
+ /* Master Clock Control: MXCLK_PLL */
+ POKE32(MXCLK_PLL_CTRL, formatPllReg(&pll));
+ }
+}
+
+
+
+void setMemoryClock(unsigned int frequency)
+{
+ unsigned int ulReg, divisor;
+ #if 1
+ /* Cheok_0509: For SM750LE, the memory clock is fixed. Nothing to set. */
+ if (getChipType() == SM750LE)
+ return;
+#endif
+ if (frequency) {
+ /* Set the frequency to the maximum frequency that the DDR Memory can take
+ which is 336MHz. */
+ if (frequency > MHz(336))
+ frequency = MHz(336);
+
+ /* Calculate the divisor */
+ divisor = (unsigned int) roundedDiv(getChipClock(), frequency);
+
+ /* Set the corresponding divisor in the register. */
+ ulReg = PEEK32(CURRENT_GATE);
+ switch (divisor) {
+ default:
+ case 1:
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, M2XCLK, DIV_1);
+ break;
+ case 2:
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, M2XCLK, DIV_2);
+ break;
+ case 3:
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, M2XCLK, DIV_3);
+ break;
+ case 4:
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, M2XCLK, DIV_4);
+ break;
+ }
+
+ setCurrentGate(ulReg);
+ }
+}
+
+
+/*
+ * This function set up the master clock (MCLK).
+ *
+ * Input: Frequency to be set.
+ *
+ * NOTE:
+ * The maximum frequency the engine can run is 168MHz.
+ */
+void setMasterClock(unsigned int frequency)
+{
+ unsigned int ulReg, divisor;
+#if 1
+ /* Cheok_0509: For SM750LE, the memory clock is fixed. Nothing to set. */
+ if (getChipType() == SM750LE)
+ return;
+#endif
+ if (frequency) {
+ /* Set the frequency to the maximum frequency that the SM750 engine can
+ run, which is about 190 MHz. */
+ if (frequency > MHz(190))
+ frequency = MHz(190);
+
+ /* Calculate the divisor */
+ divisor = (unsigned int) roundedDiv(getChipClock(), frequency);
+
+ /* Set the corresponding divisor in the register. */
+ ulReg = PEEK32(CURRENT_GATE);
+ switch (divisor) {
+ default:
+ case 3:
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, MCLK, DIV_3);
+ break;
+ case 4:
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, MCLK, DIV_4);
+ break;
+ case 6:
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, MCLK, DIV_6);
+ break;
+ case 8:
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, MCLK, DIV_8);
+ break;
+ }
+
+ setCurrentGate(ulReg);
+ }
+}
+
+
+unsigned int ddk750_getVMSize(void)
+{
+ unsigned int reg;
+ unsigned int data;
+
+ /* sm750le only use 64 mb memory*/
+ if (getChipType() == SM750LE)
+ return MB(64);
+
+ /* for 750,always use power mode0*/
+ reg = PEEK32(MODE0_GATE);
+ reg = FIELD_SET(reg, MODE0_GATE, GPIO, ON);
+ POKE32(MODE0_GATE, reg);
+
+ /* get frame buffer size from GPIO */
+ reg = FIELD_GET(PEEK32(MISC_CTRL), MISC_CTRL, LOCALMEM_SIZE);
+ switch (reg) {
+ case MISC_CTRL_LOCALMEM_SIZE_8M:
+ data = MB(8); break; /* 8 Mega byte */
+ case MISC_CTRL_LOCALMEM_SIZE_16M:
+ data = MB(16); break; /* 16 Mega byte */
+ case MISC_CTRL_LOCALMEM_SIZE_32M:
+ data = MB(32); break; /* 32 Mega byte */
+ case MISC_CTRL_LOCALMEM_SIZE_64M:
+ data = MB(64); break; /* 64 Mega byte */
+ default:
+ data = 0;
+ break;
+ }
+ return data;
+
+}
+
+int ddk750_initHw(initchip_param_t *pInitParam)
+{
+
+ unsigned int ulReg;
+#if 0
+ //move the code to map regiter function.
+ if (getChipType() == SM718) {
+ /* turn on big endian bit*/
+ ulReg = PEEK32(0x74);
+ /* now consider register definition in a big endian pattern*/
+ POKE32(0x74, ulReg|0x80000000);
+ }
+
+#endif
+
+
+ if (pInitParam->powerMode != 0 )
+ pInitParam->powerMode = 0;
+ setPowerMode(pInitParam->powerMode);
+
+ /* Enable display power gate & LOCALMEM power gate*/
+ ulReg = PEEK32(CURRENT_GATE);
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, DISPLAY, ON);
+ ulReg = FIELD_SET(ulReg, CURRENT_GATE, LOCALMEM, ON);
+ setCurrentGate(ulReg);
+
+ if (getChipType() != SM750LE) {
+ /* set panel pll and graphic mode via mmio_88 */
+ ulReg = PEEK32(VGA_CONFIGURATION);
+ ulReg = FIELD_SET(ulReg, VGA_CONFIGURATION, PLL, PANEL);
+ ulReg = FIELD_SET(ulReg, VGA_CONFIGURATION, MODE, GRAPHIC);
+ POKE32(VGA_CONFIGURATION, ulReg);
+ } else {
+#if defined(__i386__) || defined( __x86_64__)
+ /* set graphic mode via IO method */
+ outb_p(0x88, 0x3d4);
+ outb_p(0x06, 0x3d5);
+#endif
+ }
+
+ /* Set the Main Chip Clock */
+ setChipClock(MHz((unsigned int)pInitParam->chipClock));
+
+ /* Set up memory clock. */
+ setMemoryClock(MHz(pInitParam->memClock));
+
+ /* Set up master clock */
+ setMasterClock(MHz(pInitParam->masterClock));
+
+
+ /* Reset the memory controller. If the memory controller is not reset in SM750,
+ the system might hang when sw accesses the memory.
+ The memory should be resetted after changing the MXCLK.
+ */
+ if (pInitParam->resetMemory == 1) {
+ ulReg = PEEK32(MISC_CTRL);
+ ulReg = FIELD_SET(ulReg, MISC_CTRL, LOCALMEM_RESET, RESET);
+ POKE32(MISC_CTRL, ulReg);
+
+ ulReg = FIELD_SET(ulReg, MISC_CTRL, LOCALMEM_RESET, NORMAL);
+ POKE32(MISC_CTRL, ulReg);
+ }
+
+ if (pInitParam->setAllEngOff == 1) {
+ enable2DEngine(0);
+
+ /* Disable Overlay, if a former application left it on */
+ ulReg = PEEK32(VIDEO_DISPLAY_CTRL);
+ ulReg = FIELD_SET(ulReg, VIDEO_DISPLAY_CTRL, PLANE, DISABLE);
+ POKE32(VIDEO_DISPLAY_CTRL, ulReg);
+
+ /* Disable video alpha, if a former application left it on */
+ ulReg = PEEK32(VIDEO_ALPHA_DISPLAY_CTRL);
+ ulReg = FIELD_SET(ulReg, VIDEO_ALPHA_DISPLAY_CTRL, PLANE, DISABLE);
+ POKE32(VIDEO_ALPHA_DISPLAY_CTRL, ulReg);
+
+ /* Disable alpha plane, if a former application left it on */
+ ulReg = PEEK32(ALPHA_DISPLAY_CTRL);
+ ulReg = FIELD_SET(ulReg, ALPHA_DISPLAY_CTRL, PLANE, DISABLE);
+ POKE32(ALPHA_DISPLAY_CTRL, ulReg);
+
+#if 0
+ /* Disable LCD hardware cursor, if a former application left it on */
+ ulReg = PEEK32(PANEL_HWC_ADDRESS);
+ ulReg = FIELD_SET(ulReg, PANEL_HWC_ADDRESS, ENABLE, DISABLE);
+ POKE32(PANEL_HWC_ADDRESS, ulReg);
+
+ /* Disable CRT hardware cursor, if a former application left it on */
+ ulReg = PEEK32(CRT_HWC_ADDRESS);
+ ulReg = FIELD_SET(ulReg, CRT_HWC_ADDRESS, ENABLE, DISABLE);
+ POKE32(CRT_HWC_ADDRESS, ulReg);
+
+ /* Disable ZV Port 0, if a former application left it on */
+ ulReg = PEEK32(ZV0_CAPTURE_CTRL);
+ ulReg = FIELD_SET(ulReg, ZV0_CAPTURE_CTRL, CAP, DISABLE);
+ POKE32(ZV0_CAPTURE_CTRL, ulReg);
+
+ /* Disable ZV Port 1, if a former application left it on */
+ ulReg = PEEK32(ZV1_CAPTURE_CTRL);
+ ulReg = FIELD_SET(ulReg, ZV1_CAPTURE_CTRL, CAP, DISABLE);
+ POKE32(ZV1_CAPTURE_CTRL, ulReg);
+
+ /* Disable ZV Port Power, if a former application left it on */
+ enableZVPort(0);
+ /* Disable DMA Channel, if a former application left it on */
+ ulReg = PEEK32(DMA_ABORT_INTERRUPT);
+ ulReg = FIELD_SET(ulReg, DMA_ABORT_INTERRUPT, ABORT_1, ABORT);
+ POKE32(DMA_ABORT_INTERRUPT, ulReg);
+
+ /* Disable i2c */
+ enableI2C(0);
+#endif
+ /* Disable DMA Channel, if a former application left it on */
+ ulReg = PEEK32(DMA_ABORT_INTERRUPT);
+ ulReg = FIELD_SET(ulReg, DMA_ABORT_INTERRUPT, ABORT_1, ABORT);
+ POKE32(DMA_ABORT_INTERRUPT, ulReg);
+
+ /* Disable DMA Power, if a former application left it on */
+ enableDMA(0);
+ }
+
+ /* We can add more initialization as needed. */
+
+ return 0;
+}
+
+#if 0
+
+unsigned int absDiff(unsigned int a, unsigned int b)
+{
+ if ( a > b )
+ return(a - b);
+ else
+ return(b - a);
+}
+
+#endif
+/*
+ monk liu @ 4/6/2011:
+ re-write the calculatePLL function of ddk750.
+ the original version function does not use some mathematics tricks and shortcut
+ when it doing the calculation of the best N,M,D combination
+ I think this version gives a little upgrade in speed
+
+ 750 pll clock formular:
+ Request Clock = (Input Clock * M )/(N * X)
+
+ Input Clock = 14318181 hz
+ X = 2 power D
+ D ={0,1,2,3,4,5,6}
+ M = {1,...,255}
+ N = {2,...,15}
+*/
+unsigned int calcPllValue(unsigned int request_orig, pll_value_t *pll)
+{
+ /* used for primary and secondary channel pixel clock pll */
+ static pllcalparam xparm_PIXEL[] = {
+ /* 2^0 = 1*/ {0, 0, 0, 1},
+ /* 2^ 1 =2*/ {1, 0, 1, 2},
+ /* 2^ 2 = 4*/ {2, 0, 2, 4},
+ {3, 0, 3, 8},
+ {4, 1, 3, 16},
+ {5, 2, 3, 32},
+ /* 2^6 = 64 */ {6, 3, 3, 64},
+ };
+
+ /* used for MXCLK (chip clock) */
+ static pllcalparam xparm_MXCLK[] = {
+ /* 2^0 = 1*/ {0, 0, 0, 1},
+ /* 2^ 1 =2*/ {1, 0, 1, 2},
+ /* 2^ 2 = 4*/ {2, 0, 2, 4},
+ {3, 0, 3, 8},
+ };
+
+ /* as sm750 register definition, N located in 2,15 and M located in 1,255 */
+ int N, M, X, d;
+ int xcnt;
+ int miniDiff;
+ unsigned int RN, quo, rem, fl_quo;
+ unsigned int input, request;
+ unsigned int tmpClock, ret;
+ pllcalparam * xparm;
+
+#if 1
+ if (getChipType() == SM750LE) {
+ /* SM750LE don't have prgrammable PLL and M/N values to work on.
+ Just return the requested clock. */
+ return request_orig;
+ }
+#endif
+
+ ret = 0;
+ miniDiff = ~0;
+ request = request_orig / 1000;
+ input = pll->inputFreq / 1000;
+
+ /* for MXCLK register , no POD provided, so need be treated differently */
+
+ if (pll->clockType != MXCLK_PLL) {
+ xparm = &xparm_PIXEL[0];
+ xcnt = sizeof(xparm_PIXEL)/sizeof(xparm_PIXEL[0]);
+ } else {
+ xparm = &xparm_MXCLK[0];
+ xcnt = sizeof(xparm_MXCLK)/sizeof(xparm_MXCLK[0]);
+ }
+
+
+ for (N = 15; N > 1; N--) {
+ /* RN will not exceed maximum long if @request <= 285 MHZ (for 32bit cpu) */
+ RN = N * request;
+ quo = RN / input;
+ rem = RN % input;/* rem always small than 14318181 */
+ fl_quo = (rem * 10000 /input);
+
+ for (d = xcnt - 1; d >= 0; d--) {
+ X = xparm[d].value;
+ M = quo*X;
+ M += fl_quo * X / 10000;
+ /* round step */
+ M += (fl_quo*X % 10000)>5000?1:0;
+ if (M < 256 && M > 0) {
+ unsigned int diff;
+ tmpClock = pll->inputFreq *M / N / X;
+ diff = absDiff(tmpClock, request_orig);
+ if (diff < miniDiff) {
+ pll->M = M;
+ pll->N = N;
+ pll->OD = xparm[d].od;
+ pll->POD = xparm[d].pod;
+ miniDiff = diff;
+ ret = tmpClock;
+ }
+ }
+ }
+ }
+
+ //printk("Finally: pll->n[%lu],m[%lu],od[%lu],pod[%lu]\n",pll->N,pll->M,pll->OD,pll->POD);
+ return ret;
+}
+
+unsigned int calcPllValue2(
+unsigned int ulRequestClk, /* Required pixel clock in Hz unit */
+pll_value_t *pPLL /* Structure to hold the value to be set in PLL */
+)
+{
+ unsigned int M, N, OD, POD = 0, diff, pllClk, odPower, podPower;
+ unsigned int bestDiff = 0xffffffff; /* biggest 32 bit unsigned number */
+ unsigned int ret;
+ /* Init PLL structure to know states */
+ pPLL->M = 0;
+ pPLL->N = 0;
+ pPLL->OD = 0;
+ pPLL->POD = 0;
+
+ /* Sanity check: None at the moment */
+
+ /* Convert everything in Khz range in order to avoid calculation overflow */
+ pPLL->inputFreq /= 1000;
+ ulRequestClk /= 1000;
+
+#ifndef VALIDATION_CHIP
+ /* The maximum of post divider is 8. */
+ for (POD = 0; POD <= 3; POD++)
+#endif
+ {
+
+#ifndef VALIDATION_CHIP
+ /* MXCLK_PLL does not have post divider. */
+ if ((POD > 0) && (pPLL->clockType == MXCLK_PLL))
+ break;
+#endif
+
+ /* Work out 2 to the power of POD */
+ podPower = twoToPowerOfx(POD);
+
+ /* OD has only 2 bits [15:14] and its value must between 0 to 3 */
+ for (OD = 0; OD <= 3; OD++) {
+ /* Work out 2 to the power of OD */
+ odPower = twoToPowerOfx(OD);
+
+#ifdef VALIDATION_CHIP
+ if (odPower > 4)
+ podPower = 4;
+ else
+ podPower = odPower;
+#endif
+
+ /* N has 4 bits [11:8] and its value must between 2 and 15.
+ The N == 1 will behave differently --> Result is not correct. */
+ for (N = 2; N <= 15; N++) {
+ /* The formula for PLL is ulRequestClk = inputFreq * M / N / (2^OD)
+ In the following steps, we try to work out a best M value given the others are known.
+ To avoid decimal calculation, we use 1000 as multiplier for up to 3 decimal places of accuracy.
+ */
+ M = ulRequestClk * N * odPower * 1000 / pPLL->inputFreq;
+ M = roundedDiv(M, 1000);
+
+ /* M field has only 8 bits, reject value bigger than 8 bits */
+ if (M < 256) {
+ /* Calculate the actual clock for a given M & N */
+ pllClk = pPLL->inputFreq * M / N / odPower / podPower;
+
+ /* How much are we different from the requirement */
+ diff = absDiff(pllClk, ulRequestClk);
+
+ if (diff < bestDiff) {
+ bestDiff = diff;
+
+ /* Store M and N values */
+ pPLL->M = M;
+ pPLL->N = N;
+ pPLL->OD = OD;
+
+#ifdef VALIDATION_CHIP
+ if (OD > 2)
+ POD = 2;
+ else
+ POD = OD;
+#endif
+
+ pPLL->POD = POD;
+ }
+ }
+ }
+ }
+ }
+
+ /* Restore input frequency from Khz to hz unit */
+// pPLL->inputFreq *= 1000;
+ ulRequestClk *= 1000;
+ pPLL->inputFreq = DEFAULT_INPUT_CLOCK; /* Default reference clock */
+
+ /* Output debug information */
+ //DDKDEBUGPRINT((DISPLAY_LEVEL, "calcPllValue: Requested Frequency = %d\n", ulRequestClk));
+ //DDKDEBUGPRINT((DISPLAY_LEVEL, "calcPllValue: Input CLK = %dHz, M=%d, N=%d, OD=%d, POD=%d\n", pPLL->inputFreq, pPLL->M, pPLL->N, pPLL->OD, pPLL->POD));
+
+ /* Return actual frequency that the PLL can set */
+ ret = calcPLL(pPLL);
+ return ret;
+}
+
+
+
+
+
+unsigned int formatPllReg(pll_value_t *pPLL)
+{
+ unsigned int ulPllReg = 0;
+
+ /* Note that all PLL's have the same format. Here, we just use Panel PLL parameter
+ to work out the bit fields in the register.
+ On returning a 32 bit number, the value can be applied to any PLL in the calling function.
+ */
+ ulPllReg =
+ FIELD_SET( 0, PANEL_PLL_CTRL, BYPASS, OFF)
+ | FIELD_SET( 0, PANEL_PLL_CTRL, POWER, ON)
+ | FIELD_SET( 0, PANEL_PLL_CTRL, INPUT, OSC)
+#ifndef VALIDATION_CHIP
+ | FIELD_VALUE(0, PANEL_PLL_CTRL, POD, pPLL->POD)
+#endif
+ | FIELD_VALUE(0, PANEL_PLL_CTRL, OD, pPLL->OD)
+ | FIELD_VALUE(0, PANEL_PLL_CTRL, N, pPLL->N)
+ | FIELD_VALUE(0, PANEL_PLL_CTRL, M, pPLL->M);
+
+ return ulPllReg;
+}
+
+
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.